JP2017167809A - Host device, slave device, and external apparatus - Google Patents

Abstract

For example, an electronic device that enables a user to grasp a wireless communication state is obtained. A host device according to an embodiment is a host device capable of transmitting and receiving data by wire between an external device and a slave device capable of transmitting and receiving data wirelessly, and includes an output unit, a transfer rate acquisition unit, A storage unit; and an output control unit. The output unit performs display or audio output. The transfer rate acquisition unit acquires the data transfer rate of transmission / reception between the slave device and the external device detected by the slave device from the slave device. The storage unit stores data indicating the output state of the output unit corresponding to the data transfer rate. The output control unit acquires data indicating an output state corresponding to the data transfer rate acquired by the transfer rate acquisition unit by referring to the storage unit, and controls the output unit to be in the output state. [Selection] Figure 5

Description

  Embodiments relate to a host device, a slave device, and an external device.

  Conventionally, a memory card having a wireless communication function is known.

JP 2013-5352 A

  A system including this type of electronic device is convenient if configured so that a user can grasp the wireless communication state, for example.

  The host device of the embodiment is a host device that can send and receive data by wire between an external device and a slave device that can send and receive data wirelessly, and an output unit, a transfer rate acquisition unit, a storage unit, An output control unit. The output unit performs display or audio output. The transfer rate acquisition unit acquires the data transfer rate of transmission / reception between the slave device and the external device detected by the slave device from the slave device. The storage unit stores data indicating the output state of the output unit corresponding to the data transfer rate. The output control unit acquires data indicating an output state corresponding to the data transfer rate acquired by the transfer rate acquisition unit by referring to the storage unit, and controls the output unit to be in the output state.

FIG. 1 is a schematic and exemplary perspective view of a system including a host device, a slave device, and an external device according to the first embodiment. FIG. 2 is a schematic and exemplary block diagram of the system according to the first embodiment. FIG. 3 is an exemplary flowchart of the control procedure of the output unit according to the data transfer rate in the system of the embodiment. FIG. 4 is a table showing an example of setting the output state of the output unit according to the data transfer rate in the system of the embodiment. FIG. 5 is a table illustrating a setting example of the output state of the output unit according to the data transfer rate in the system of the first modification example of the embodiment. FIG. 6 is a table illustrating a setting example of the output state of the output unit according to the data transfer rate in the system of the second modification example of the embodiment. FIG. 7 is a table illustrating a setting example of the output state of the output unit according to the data transfer rate in the system of the third modification example of the embodiment. FIG. 8 is a table illustrating a setting example of the output state of the output unit according to the data transfer rate in the system of the fourth modification example of the embodiment. FIG. 9 is a schematic and exemplary block diagram of the system of the second embodiment. FIG. 10 is a schematic and exemplary block diagram of the system according to the third embodiment. FIG. 11 is a schematic and exemplary block diagram of the system of the fourth embodiment. FIG. 12 is a schematic and exemplary plan view showing the internal configuration of the slave device according to the fourth embodiment. FIG. 13 is a schematic and exemplary block diagram of the system of the fifth embodiment. FIG. 14 is a schematic and exemplary perspective view of the system of the fifth embodiment. FIG. 15 is a schematic and exemplary block diagram of the system of the sixth embodiment. FIG. 16 is a schematic and exemplary explanatory diagram illustrating timing at which a signal (data) is wirelessly transmitted between a slave device and an external device in the system of the sixth embodiment. FIG. 17 is a schematic and exemplary block diagram of the system of the seventh embodiment. FIG. 18 is a schematic and exemplary perspective view of the system of the seventh embodiment.

  Hereinafter, exemplary embodiments and modifications of the electronic device are disclosed. The configurations and controls (technical features) of the embodiments described below, and the operations and results (effects) brought about by the configurations and controls are examples.

  Moreover, the system of embodiment and the modification shown below are provided with the same structure. In the following, common reference numerals are given to similar configurations, and redundant descriptions are omitted.

(First embodiment)
FIG. 1 is a perspective view of a system 1 according to the first embodiment. As shown in FIG. 1, the system 1 includes a host device 10, a slave device 20, and an external device 30. In the example of FIG. 1, the host device 10 is a digital camera, the slave device 20 is a memory card attached to the host device 10, and the external device 30 is a personal computer. Since the slave device 20 is attached to the host device 10, the slave device 20 moves together with the host device 10. The host device 10 and the slave device 20 can transmit and receive data by wire (for example, SD (registered trademark) interface communication or USB (universal serial bus) communication). In addition, the slave device 20 and the external device 30 can transmit and receive data by radio (for example, near field communication). In the present embodiment, the host device 10 includes an output unit 15 (for example, an LED, a light emitting diode). The output unit 15 performs output according to a wireless data transfer rate between the slave device 20 and the external device 30. Specifically, for example, the output unit 15 is configured to intermittently output light, that is, to blink, and to blink at shorter time intervals as the data transfer rate is higher. Therefore, the user moves the slave device 20, that is, the host device 10 with respect to the external device 30 while visually recognizing the output unit 15, whereby the data transfer rate between the slave device 20 and the external device 30 is set to a high position. Device 10 or slave device 20 can be located.

  FIG. 2 is a block diagram of the system 1 according to the first embodiment. As shown in FIG. 2, the system 1 includes a host device 10, a slave device 20, and an external device 30.

  The host device 10 is, for example, a digital camera, a digital video camera, a smartphone, a personal computer, a television receiver, or the like. The host device 10 is, for example, a portable electronic device. A slave device 20 can be detachably attached to the host device 10. The slave device 20 may be accommodated in the host device 10 or may be provided in the host device 10 so as not to be attached / detached. The host device 10 can send and receive data to and from the slave device 20 by wire. The host device 10 can be referred to as a master device or an electronic device.

  The host device 10 includes a first control unit 11, a memory 13, an output unit 15, and a first interface unit 16.

  The first control unit 11 includes a storage control unit 11a, a transfer rate acquisition unit 11c, and an output control unit 11d. The storage control unit 11a controls reading of data from the memory 13, writing of data to the slave device 20, reading of data from the slave device 20, writing of data to the memory 13, and the like. The storage control unit 11a can be referred to as a host control unit or a wired data transmission / reception control unit. The transfer rate acquisition unit 11 c acquires the data transfer rate for transmission and reception between the slave device 20 and the external device 30 from the slave device 20. In addition, the transfer rate acquisition unit 11c can acquire data (communication quality data) related to communication quality of wireless transmission / reception such as a communication mode and a communication error rate. The transfer rate acquisition unit 11c can be referred to as a communication quality data acquisition unit. The output control unit 11d controls the output from the output unit 15. The first control unit 11 can be referred to as a host control unit.

  The memory 13 is a nonvolatile rewritable memory, and is, for example, a hard disk drive (HDD), a solid state drive (SSD), or the like. The memory 13 is an example of a storage unit.

  The output unit 15 performs display output or audio output. The output unit 15 that performs display output is, for example, an LED or a display. The output unit 15 that performs audio output is, for example, a speaker. The host device 10 may include both an output unit 15 that performs display output and an output unit 15 that performs audio output.

  The first interface unit 16 and the second interface unit 26 can be detachably coupled. The first interface unit 16 and the second interface unit 26 each have a plurality of pins (terminals). With the first interface unit 16 and the second interface unit 26 mechanically connected, the pins of the first interface unit 16 and the second interface unit 26 are electrically connected to each other, Wired data can be transmitted and received between the host device 10 and the slave device 20. The first interface unit 16 and the second interface unit 26 can be referred to as a connector or a connection unit.

  The first control unit 11 can include a central processing unit (CPU). The function of the first control unit 11 can be realized by a program (software, application) installed in the memory 13 or ROM (not shown). The host device 10 includes a ROM (read only memory), a RAM (random access memory), and the like (not shown). Further, at least a part of the functions of the first control unit 11 may be realized by hardware. ROM and RAM are examples of a storage unit.

  The slave device 20 is a storage medium (storage device) such as a memory card, for example. The slave device 20 can be detachably attached to the host device 10. The slave device 20 can send and receive data to and from the host device 10 by wire. The slave device 20 has a function of transmitting and receiving data wirelessly, that is, a wireless communication function. The slave device 20 can transmit and receive data wirelessly with the external device 30 having a wireless communication function. The slave device 20 may be an adapter (wireless communication device, communication device) that can be attached to and detached from the host device 10 that does not have a memory function. The slave device 20 can be referred to as a medium, an adapter, or an electronic device.

  As shown in FIG. 2, the slave device 20 includes a second control unit 21, a data buffer 22, a memory 23, a wireless communication unit 24, and a second interface unit 26.

  The second control unit 21 includes a storage control unit 21a, a wireless communication control unit 21b, a transfer rate detection unit 21c, and a register 21e. The storage control unit 21 a controls reading of data from the memory 23, writing of data to the memory 23, and the like according to commands from the host device 10 and the external device 30. The wireless communication control unit 21 b controls the wireless communication unit 24. The transfer rate detection unit 21 c detects a data transfer rate for wireless transmission / reception between the slave device 20 and the external device 30. The second control unit 21 writes the communication quality data such as the data transfer rate detected by the transfer rate detection unit 21c in the register 21e at a predetermined timing, for example, at a predetermined time interval.

  The data buffer 22 temporarily holds data. The data buffer 22 may be, for example, a dynamic static random access memory (DRAM) or a static random access memory (SRAM). The data buffer 22 may be provided independently of the second control unit 21, or may be mounted as an embedded memory in the chip of the second control unit 21.

  The memory 23 is a non-volatile rewritable memory, and is, for example, a NAND flash memory, RERAM (resistance random access memory), FERAM (ferroelectric random access memory), or the like. The memory 23 stores user data transmitted from an external device other than the slave device 20 (for example, the host device 10 and the external device 30), system data used only by the slave device 20, and the like. The memory 23 may have a memory cell array (not shown) in which a plurality of memory cells are arranged in a matrix. Individual memory cells can be stored in binary or multi-value. The memory 23 may include a plurality of memory chips (not shown).

  The wireless communication unit 24 includes a wireless communication circuit (not shown), a coupler (antenna), and the like. The wireless communication circuit performs frequency conversion, filtering, modulation / demodulation, amplification, and the like. The wireless communication unit 24 can perform wireless communication by short-range wireless communication, for example, but is not limited thereto, and may perform wireless communication by other methods such as a wireless LAN (local area network).

  The function of the second control unit 21 can be realized by, for example, a program (software, application) installed in the memory 23, ROM (not shown), or the like. Further, at least a part of the functions of the second control unit 21 may be realized by hardware.

  The external device 30 is, for example, a personal computer, a television receiver, a digital signage, a digital camera, a digital video camera, a smartphone, or the like. The external device 30 can send and receive data to and from the slave device 20 wirelessly. The external device 30 can be referred to as an electronic device. The external device 30 is detachably attached to another electronic device, such as a memory card or an adapter, for example, and can send and receive data by wire to the other electronic device. It may be an electronic device.

  The output state of the output unit 15 of the host device 10 changes according to the data transfer rate of transmission / reception between the slave device 20 and the external device 30 by radio. FIG. 3 is a flowchart showing a control procedure of the output unit 15 according to the data transfer rate.

  When wireless data transmission / reception is started between the slave device 20 and the external device 30 (Yes in S1), the second control unit 21 of the slave device 20 functions as the transfer rate detection unit 21c, and the slave device The wireless data transfer rate is detected between the external device 30 and the external device 30. The second control unit 21 writes the detected data transfer rate in the register 21e. The data transfer rate stored in the register 21e is rewritten every time the data transfer rate changes. In the present embodiment, two modes (states) of the output execution mode and the output stop mode are set for the output of the output unit 15. In the storage area or the memory 13 of the first control unit 11, for example, a flag (data) indicating the output execution mode is set to “1”, a flag indicating the output stop mode is set to “0”, etc. A flag indicating the mode is stored. The output execution mode is set at the time when the answer is Yes in S1. Note that when wireless data transmission / reception is not performed between the slave device 20 and the external device 30 (No in S1), the series of processing illustrated in FIG. 3 is not executed.

  When the first control unit 11 receives from the second control unit 21 of the slave device 20 a notification indicating that data transmission / reception between the slave device 20 and the external device 30 has been started, the transfer is performed. It functions as the rate acquisition unit 11c and acquires the data transfer rate stored in the register 21e of the slave device 20 (S2).

  Further, the first control unit 11 changes the data transfer rate based on the current (latest) data transfer rate and the past data transfer rate acquired in S2, for example, the change of the data transfer rate per unit time. The amount is calculated (S3). The past data transfer rate is stored in the memory 23, the memory 13, the RAM, or the like.

  When it is in the output execution mode when S3 ends (Yes in S4), the first control unit 11 functions as the output control unit 11d, and the data transfer rate stored in the storage unit such as the memory 13 or the like. The output unit 15 is controlled so as to perform output according to the data transfer rate with reference to the data indicating the output state of the output unit 15 corresponding to (S5).

  FIG. 4 shows an example of setting the output state by the output unit 15 according to the data transfer rate when the output unit 15 is a display output unit. In the case of this example, the output unit 15 is a display output unit, and includes a plurality of output units, for example, LEDs, that emit different colors. The output control unit 11d can control light emission and light emission stop of each output unit, light emission intensity of each output unit, a combination of light output from a plurality of output units, and the like. The output control unit 11d refers to the data indicating the light emission state of the output unit 15 corresponding to the data transfer rate stored in the storage unit such as the memory 13, and emits light in the light emission state corresponding to the data transfer rate. The output unit 15 is controlled. As shown in FIG. 4, the output control unit 11d controls the output unit 15 to output red light when the data transfer rate is 32 Mbps or more and less than 65 Mbps. The output control unit 11d controls the output unit 15 to output orange light when the data transfer rate is 65 Mbps or more and less than 130 Mbps. The output control unit 11d controls the output unit 15 to output yellow light when the data transfer rate is 130 Mbps or more and less than 261 Mbps. The output control unit 11d controls the output unit 15 to output green light when the data transfer rate is 261 Mbps or more and less than 522 Mbps. Further, the output control unit 11d controls the output unit 15 to output blue light when the data transfer rate is 522 Mbps or more. As described above, in the present embodiment, a plurality of colors (light emission colors) are set as a plurality (five) of output states of the output unit 15 that change in accordance with the wireless data transfer rate. Each range is set to be equal to or higher than the lower limit value and lower than the upper limit value including modifications, but the boundary value of the range may be included in any of the adjacent ranges, and each range is, for example, lower than the lower limit value. It may be large and below the upper limit.

  Further, the output control unit 11d determines that when the data transfer rate is equal to or higher than the first threshold (for example, 522 Mbps), the duration during which the state where the data transfer rate is equal to or higher than the first threshold continues (first Start). After S5, when the first duration is less than the second threshold (for example, 1 minute) (No in S6), if the data transfer has not ended (No in S7), the first control The unit 11 stores, for example, control information such as the data transfer rate, the change rate of the data transfer rate, and the first duration in the memory 13 (S8). After S8, the process proceeds to S2 in the next time step. In the case of Yes in S7, the series of processing shown in FIG.

  After S5, when the first duration is equal to or longer than the second threshold (for example, 1 minute) (Yes in S6), the first controller 11 shifts to the control stop mode. Specifically, the first control unit 11 rewrites the flag “1” indicating the output execution mode to the flag “0” indicating the output stop mode (S9). After S9, the process proceeds to S7.

  If No in S4, the process proceeds to S10. In S10, when the data transfer rate is equal to or lower than the third threshold (for example, 261 Mbps) (Yes in S10), the first control unit 11 shifts to the output execution mode. Specifically, the first control unit 11 rewrites the flag “0” indicating the output stop mode to the flag “1” indicating the output execution mode (S11). If the answer is No in S10, the process proceeds to S12. In S12, when the rate of decrease in the data transfer rate is equal to or higher than a fourth threshold (for example, 100 Mbps / 1 time step) (Yes in S12), the first control unit 11 shifts to the output execution mode (S11). ). In the case of No in S12, the process proceeds to S7 while maintaining the output stop mode.

  As described above, in the present embodiment, the output state of the output unit 15 changes based on the wireless data transfer rate between the slave device 20 and the external device 30. Therefore, for example, the user changes the relative position between the host device 10 to which the slave device 20 is mounted and the external device 30 according to the output state of the output unit 15, and the host device 10 and the external device 30 are changed. The communication state between the slave device 20 and the external device 30 can be set in a more favorable arrangement. As a result, data transfer between the slave device 20 and the external device 30 can be completed more quickly. Data indicating the output state of the output unit 15 corresponding to the data transfer rate can be stored in the memory 13 or a storage unit such as a ROM. Data indicating the output state of the output unit 15 corresponding to the data transfer rate may be described in the program. In that case, a RAM or the like can be an example of a storage unit.

  In the present embodiment, the first continuation time in which the state in which the data transfer rate of transmission / reception between the slave device 20 and the external device 30 is higher than the first threshold continues is the second threshold (predetermined time). If it becomes longer, the mode shifts to the output stop mode. Therefore, compared with the case where the output stop mode is not set and the output by the output unit 15 is continued, the energy consumption accompanying the output of the output unit 15 can be reduced.

  Further, in the present embodiment, the first control unit 11 is configured such that when the data transfer rate of transmission / reception between the slave device 20 and the external device 30 is equal to or lower than the third threshold in the output stop mode, or If the data transfer rate decrease rate is greater than the fourth threshold value, the process proceeds to the output execution mode. That is, when the data transfer rate decreases or when the data transfer rate sharply decreases, the output according to the data transfer rate by the output unit 15 is resumed, so that the user has deteriorated in the communication state. Easy to grasp.

  Further, in the present embodiment, the output control unit 11d is configured so that the color as an example of the output state changes according to the data transfer rate of transmission / reception between the slave device 20 and the external device 30 wirelessly. Display output unit). Therefore, the user can easily grasp the change in the data transfer rate visually as the color change.

  The change in the state of the output unit 15 as the display output unit includes, for example, a change in the color of the output unit 15, a change in the light emission intensity of the output unit 15, whether or not the output unit 15 emits light, ), A change in the number of output units 15 that emit light, a change in the size of the light emitting region in the output unit 15, and the like.

(First modification)
FIG. 5 is a diagram illustrating a setting example of the output state of the output unit 15 (display output unit) according to the data transfer rate in the first modification of the first embodiment. In this modification, the output unit 15 is a display output unit such as an LED, and can switch between an operating state and a stopped state at a predetermined interval, that is, can blink at a predetermined interval. In S5, the output control unit 11d refers to data indicating an interval corresponding to the data transfer rate stored in the storage unit such as the memory 13, and the operation state and the stop state are changed at intervals according to the data transfer rate. The output unit 15 is controlled so as to be switched, that is, blinking. As illustrated in FIG. 5, the output control unit 11 d controls the output unit 15 to blink at 0.5 Hz when the data transfer rate is 32 Mbps or more and less than 65 Mbps. The output control unit 11d controls the output unit 15 to blink at 1 Hz when the data transfer rate is 65 Mbps or more and less than 130 Mbps. The output control unit 11d controls the output unit 15 to blink at 2 Hz when the data transfer rate is 130 Mbps or more and less than 261 Mbps. The output control unit 11d controls the output unit 15 to blink at 4 Hz when the data transfer rate is not less than 261 Mbps and less than 522 Mbps. Further, the output control unit 11d controls the output unit 15 to blink at 8 Hz when the data transfer rate is 522 Mbps or more. Thus, in this modification, a plurality of blinking frequencies (flashing speeds) are set as a plurality (five) of output states of the output unit 15 that change according to the high data transfer rate of wireless transmission / reception. Yes. The user can easily imagine that the higher the blinking frequency, the higher the transfer rate. Also according to this modification, the user sets the host device 10 and the external device 30 in an arrangement in which the communication state between the slave device 20 and the external device 30 is better based on the output state of the output unit 15. Can do. In addition, since the blinking frequency is set stepwise, the blinking frequency changes more greatly (abruptly) according to the change in the data transfer rate, so that the user can change (increase or decrease) the data transfer rate. Easy to grasp. When the output unit 15 is an audio output unit, the output control unit 11d may control the output unit 15 to output intermittently at the frequency shown in FIG.

(Second modification)
FIG. 6 is a diagram illustrating a setting example of the output state of the output unit 15 (display output unit) according to the data transfer rate in the second modification of the first embodiment. Also in this modification, the output unit 15 is a display output unit such as an LED, and can switch between an operating state and a stopped state at a predetermined interval, that is, can blink at a predetermined interval. In S5, the output control unit 11d refers to data indicating an interval corresponding to the data transfer rate stored in the storage unit such as the memory 13, and the operation state and the stop state are changed at intervals according to the data transfer rate. The output unit 15 is controlled so as to be switched, that is, blinking. However, in this modification, as shown in FIG. 6, the output control unit 11d has a high data transfer rate in the range of 0.5 Hz to less than 1 Hz when the data transfer rate is 32 Mbps or more and less than 65 Mbps. The output unit 15 is controlled so that the blinking frequency increases linearly or stepwise. When the data transfer rate is 65 Mbps or more and less than 139 Mbps, the output control unit 11d has a range of 1z or more and less than 2 Hz so that the blinking frequency increases linearly or stepwise as the data transfer rate increases. To control. When the data transfer rate is 130 Mbps or more and less than 261 Mbps, the output control unit 11d has a range of 2 Hz or more and less than 4 Hz so that the blinking frequency increases linearly or stepwise as the data transfer rate increases. To control. When the data transfer rate is not less than 261 Mbps and less than 522 Mbps, the output control unit 11d has a range of 4 Hz or more and less than 8 Hz so that the blinking frequency increases linearly or stepwise as the data transfer rate increases. To control. In addition, when the data transfer rate is 522 Mbps or more, the output control unit 11d outputs the output unit 15 so that the blinking frequency increases linearly or stepwise as the data transfer rate increases in the range of 8 Hz to 16 Hz. To control. When the data transfer rate is equal to or higher than the set upper limit value, the blinking frequency is set to 16 Hz. Also according to this modification, the user sets the host device 10 and the external device 30 in an arrangement in which the communication state between the slave device 20 and the external device 30 is better based on the output state of the output unit 15. Can do. When the output unit 15 is an audio output unit, the output control unit 11d may control the output unit 15 to output intermittently at the frequency shown in FIG.

  Further, the second control unit 21 of the slave device 20 acquires an error rate of transmission / reception between the slave device 20 and the external device 30, and the first control unit 11 receives from the second control unit 21. The error rate may be acquired and the blinking frequency may be changed based on the error rate. The error rate is, for example, a frame error rate (FER) or a bit error rate (BER). When the data transfer rate is 32 Mbps or more and less than 65 Mbps and the error rate is the upper limit value (set value), the output control unit 11d sets the blinking frequency to 0.5 Hz and the error rate to the lower limit value ( If the error rate is between the lower limit value and the upper limit value, the lower limit value and the upper limit value are set so that the lower the error rate, the higher the flashing frequency. The blinking frequency can be set between the values stepwise or linearly. Such a variable setting of the blinking frequency according to the height of the error rate can be similarly applied to other data transfer rate sections. The higher the error rate, the lower the actual data transfer rate. Data indicating an interval corresponding to the error rate is stored in a storage unit such as the memory 13. The first control unit 11 functions as an error rate acquisition unit and acquires an error rate from the slave device 20. In S5, the first control unit 11 functions as the output control unit 11d, refers to data indicating an interval corresponding to the error rate stored in the storage unit such as the memory 13, and stops the operation state at the interval. The output unit 15 is controlled so that the state is switched, that is, blinking. Also according to this modification, the user sets the host device 10 and the external device 30 in an arrangement in which the communication state between the slave device 20 and the external device 30 is better based on the output state of the output unit 15. Can do.

(Third Modification)
FIG. 7 is a diagram illustrating an example of setting the output state of the output unit 15 (audio output unit) according to the data transfer rate in the third modification of the first embodiment. In this modification, the output unit 15 is an audio output unit such as a speaker, and can output sounds having different frequencies, that is, sounds having different pitches. In S5, the output control unit 11d refers to the data indicating the frequency of the sound corresponding to the data transfer rate stored in the storage unit such as the memory 13, and controls the output unit 15 to output the sound having the frequency. To do. As shown in FIG. 7, the output control unit 11 d controls the output unit 15 so that a sound of 220 Hz is emitted when the data transfer rate is 32 Mbps or more and less than 65 Mbps. When the data transfer rate is 65 Mbps or more and less than 139 Mbps, the output control unit 11d controls the output unit 15 so that a sound of 330 Hz is output. When the data transfer rate is 130 Mbps or more and less than 261 Mbps, the output control unit 11d controls the output unit 15 so that 440 Hz sound is output. The output control unit 11d controls the output unit 15 so that sound of 660 Hz is emitted when the data transfer rate is 261 Mbps or more and less than 522 Mbps. In addition, when the data transfer rate is 522 Mbps or more, the output control unit 11d controls the output unit 15 so that 880 Hz sound is output. As described above, in this modification, a plurality of (five) output states of the output unit 15 that change according to the data transfer rate of wireless transmission / reception are set with a plurality of sound frequencies (pitch). Yes. Also according to this modification, the user connects the host device 10 and the external device 30 to the communication state between the slave device 20 and the external device 30 based on the frequency of the sound output from the output unit 15, that is, the pitch in the audible range. Can be set in a better arrangement. Even when the output unit 15 is an audio output unit as in the present modification, the output control unit 11d determines that the frequency of the sound to be output is that of the second modification according to the data transfer rate and the error rate. Thus, the output unit 15 can be controlled so as to change stepwise or linearly. In this case, for example, the output control unit 11d may control the output unit 15 so that the sound frequency increases stepwise or linearly as the data transfer rate increases or the error rate decreases.

  The change in the state of the output unit 15 as the audio output unit is, for example, a change in the pitch of the output unit 15, a change in the timbre of the output unit 15, a change in the volume of the output unit 15, or an output (pronunciation) of the output unit 15. Presence or absence, change in the output interval of the output unit 15, and the like.

(Fourth modification)
FIG. 8 is a diagram illustrating a setting example of the output state of the output unit 15 (display output unit) according to the data transfer rate in the fourth modification example of the first embodiment. In this modification, the output unit 15 is a display output unit such as an LED, and can switch between an operating state and a stopped state at a predetermined interval, that is, can blink at a predetermined interval. In S5, the output control unit 11d refers to the data indicating the interval corresponding to the change rate of the data transfer rate stored in the storage unit such as the memory 13, and the operation state and the stop state are switched at the interval. The output unit 15 is controlled to blink. As shown in FIG. 8, the output control unit 11d determines that when the data transfer rate suddenly drops, that is, when the change rate of the data transfer rate is less than Vth1 (fifth threshold, negative number), The output unit 15 is controlled so as to blink at 0.5 Hz. When the data transfer rate drops, that is, when the change rate of the data transfer rate becomes Vth1 (fifth threshold) or more and less than Vth2 (sixth threshold, negative number), the output control unit 11d The output unit 15 is controlled so as to blink at 1 Hz. When the change in the data transfer rate is small, that is, when the change rate in the data transfer rate is equal to or greater than Vth2 (sixth threshold) and less than Vth3 (seventh threshold, positive number). The output unit 15 is controlled so as to blink at 2 Hz. When the data transfer rate increases, that is, when the change rate of the data transfer rate becomes Vth3 (seventh threshold) or more and less than Vth4 (eighth threshold, positive number), the output control unit 11d The output unit 15 is controlled so as to blink at 4 Hz. In addition, when the data transfer rate suddenly increases, that is, when the change rate of the data transfer rate becomes equal to or higher than Vth4 (eighth threshold), the output control unit 11d sets the output unit 15 to blink at 8 Hz. Control. Thus, in this modification, a plurality of blinking frequencies (flashing speeds) are set as a plurality (five) of output states of the output unit 15 that change in accordance with the change rate of the data transfer rate for wireless transmission and reception. Yes. According to this modification, since the user can grasp the change in the data transfer rate based on the output state of the output unit 15, the host device 10 and the external device 30 can be more quickly and in good communication state. It is easy to set in a simple arrangement

  Further, the output control unit 11d can control the output unit 15 so that the output changes according to the data transfer rate and the output changes according to the change speed. Specifically, for example, the output control unit 11d changes the color as shown in FIG. 4 according to the data transfer rate, and the blinking frequency according to the change rate of the data transfer rate as shown in FIG. It is possible to control the output unit 15 so as to change. Further, the output control unit 11d may control the output unit 15 so that the blinking frequency changes according to the data transfer rate and the color changes according to the change rate of the data transfer rate. The control of the change in the output state of the output unit 15 by the output control unit 11d is not limited to these examples, and the output control unit 11d can communicate the data transfer rate, the change rate of the data transfer rate, the error rate, The output unit 15 can be controlled so that any one of the color, the blinking frequency, the sound frequency, etc. changes according to any of the physical quantities indicating the color, the blinking frequency, and the sound. By combining a plurality of output states having different frequencies and the like, a plurality of physical quantities indicating communication states such as a data transfer rate, a change rate of the data transfer rate, and an error rate can be recognized.

(Second Embodiment)
FIG. 9 is a block diagram of a system 1A of the second embodiment. As illustrated in FIG. 9, the system 1A includes a host device 10A, a slave device 20A, and an external device 30. Also in the system 1A, the control of the output unit 15 is executed according to the procedure shown in FIG. 3 as in the first embodiment. Therefore, the system 1A of this embodiment can obtain the same effect as that of the first embodiment. However, this embodiment is the first implementation in that the control according to the procedure shown in FIG. 3 is executed not by the first control unit 11 of the host device 10A but by the second control unit 21 of the slave device 20A. It is different from the form.

  The second control unit 21 executes each procedure shown in FIG. That is, the second control unit 21 acquires the data transfer rate detected by the transfer rate detection unit 21c (S2), and calculates the change rate of the data transfer rate (S3). In addition, the second control unit 21 determines whether or not the output execution mode is set (S4), controls the output unit 15 according to the data transfer rate (S5), and the first duration is equal to or greater than the second threshold. (S6), whether or not the data transfer is completed (S7), storing the control information in the memory 23 (S8), and shifting from the output execution mode to the output stop mode (S9). The determination as to whether or not the data transfer rate is equal to or lower than the third threshold value (S10), the transition from the output stop mode to the output execution mode (S11), and the data transfer rate decrease rate are equal to or higher than the fourth threshold value. Whether or not (S12) is executed.

  The second control unit 21 includes an output control signal generation unit 21g. In S5, the second control unit 21 functions as the output control signal generation unit 21g, and refers to data indicating an output state corresponding to the data transfer rate stored in the storage unit such as the memory 23, so that the host Output control signals (commands and instruction signals) are generated to cause the output unit 15 of the apparatus 10A to execute output in accordance with the data transfer rate as exemplified in FIGS. The second control unit 21 transmits an output control signal to the first control unit 11 at a predetermined timing. The timing at which the output control signal is transmitted is, for example, the timing at which the output state is changed according to a certain time interval, the data transfer rate or the data transfer rate change rate, that is, the data transfer rate or the data transfer rate change rate. This is the timing at which the corresponding output state is switched. The first control unit 11 functions as the output control unit 11d and controls the output unit 15 so as to perform output according to the received output control signal. That is, the output control signal is a signal used for controlling the output unit 15 by the first control unit 11. Note that the storage unit that stores data indicating the output state corresponding to the data transfer rate may be the ROM or RAM of the slave device 20A.

  The output control signal may include a data transfer rate. In this case, for example, data indicating an output state associated with the data transfer rate is stored in a storage unit such as the memory 13 of the host device 10A. The first control unit 11 obtains a data transfer rate from the output control signal received from the slave device 20A, and refers to a storage unit such as the memory 13 to obtain data indicating an output state corresponding to the data transfer rate. Can be acquired. The first control unit 11 controls the output unit 15 so as to be in the output state.

  On the other hand, the output control signal may include data indicating the output state. In this case, for example, the memory 23 of the slave device 20A stores data indicating the output state associated with the data transfer rate. The output signal generation unit 21g (second control unit 21) acquires data indicating the output state corresponding to the detected data transfer rate by referring to the storage unit such as the memory 23, and indicates the output state. An output control signal including data is generated. The first control unit 11 acquires data indicating the output state from the output control signal received from the slave device 20A, and controls the output unit 15 so as to be in the output state.

(Third embodiment)
FIG. 10 is a block diagram of a system 1B of the third embodiment. As shown in FIG. 10, the system 1B includes a host device 10B, a slave device 20B, and an external device 30. Also in the system 1B, the control of the output unit 15 is executed according to the procedure shown in FIG. 3 as in the first embodiment. Therefore, the system 1B of the present embodiment can obtain the same effect as that of the first embodiment. However, also in the present embodiment, the first control is that the second control unit 21 of the slave device 20B executes the control according to the procedure shown in FIG. 3 instead of the first control unit 11 of the host device 10B. It is different from the form. Further, in the present embodiment, the output control unit 21d controls the output unit 15 without going through the first control unit 11 so as to execute output corresponding to the data transfer rate as shown in FIG. This is different from the first embodiment. The output unit 15 is a speaker (audio output unit).

  The second control unit 21 executes each procedure shown in FIG. That is, the second control unit 21 acquires the data transfer rate detected by the transfer rate detection unit 21c (S2), and calculates the change rate of the data transfer rate (S3). In addition, the second control unit 21 determines whether or not the output execution mode is set (S4), controls the output unit 15 according to the data transfer rate (S5), and the first duration is equal to or greater than the second threshold. (S6), whether or not the data transfer is completed (S7), storing the control information in the memory 23 (S8), and shifting from the output execution mode to the output stop mode (S9). The determination as to whether or not the data transfer rate is equal to or lower than the third threshold value (S10), the transition from the output stop mode to the output execution mode (S11), and the data transfer rate decrease rate are equal to or higher than the fourth threshold value. Whether or not (S12) is executed.

  The second control unit 21 includes an output control unit 21d. In S5, the second control unit 21 functions as the output control unit 21d and outputs the output state of the output unit 15 corresponding to the data transfer rate stored in the storage unit such as the memory 23, for example, data indicating the frequency of sound. , The output unit 15 is controlled to output in an output state corresponding to the data transfer rate. Specifically, for example, the output control unit 21d may cause the speaker as the output unit 15 to emit sound at the frequency shown in FIG. 7 via the second interface unit 26 and the first interface unit 16. A signal of possible power (voltage) is input to the output unit 15 without going through the first control unit 11. Each of the first interface unit 16 and the second interface unit 26 is provided with a terminal that is electrically connected to the output unit 15 without passing through the first control unit 11 and transmits the signal. An amplifier or the like may be provided between the first interface unit 16 and the output unit 15.

(Fourth embodiment)
FIG. 11 is a block diagram of a system 1C according to the fourth embodiment. FIG. 12 is a plan view showing the internal structure of the slave device 20C included in the system 1C. As shown in FIG. 11, the system 1C includes a host device 10C, a slave device 20C, and an external device 30. In the system 1C, the output state of the output unit 25 provided in the slave device 20C changes according to the data transfer rate. That is, in the system 1C, the control of the output unit 25 of the slave device 20C is executed according to the procedure shown in FIG. 3 similar to the first embodiment. In the system 1C of the present embodiment, the same effect as that of the first embodiment can be obtained. However, in the present embodiment, control according to the procedure shown in FIG. 3 is executed by the second control unit 21 (output control unit 21d) of the slave device 20C, not the first control unit 11 of the host device 10C. This is different from the first embodiment.

  The second control unit 21 executes each procedure shown in FIG. That is, the second control unit 21 acquires the data transfer rate detected by the transfer rate detection unit 21c (S2), and calculates the change rate of the data transfer rate (S3). In addition, the second control unit 21 determines whether or not the output execution mode is set (S4), controls the output unit 15 according to the data transfer rate (S5), and the first duration is equal to or greater than the second threshold. (S6), whether or not the data transfer is completed (S7), storing the control information in the memory 23 (S8), and shifting from the output execution mode to the output stop mode (S9). The determination of whether or not the data transfer rate is equal to or lower than the third threshold (S10), the transition from the output stop mode to the output execution mode (S11), and the data transfer rate decrease rate are equal to or higher than the fourth threshold Whether or not (S12) is executed.

  The second control unit 21 includes an output control unit 21d. In S5, the second control unit 21 functions as the output control unit 21d, refers to the data indicating the output state of the output unit 15 corresponding to the data transfer rate stored in the storage unit such as the memory 23, and the like. The output unit 25 is controlled to execute output corresponding to the data transfer rate as exemplified in 4 to 8.

  FIG. 12 is a plan view showing the internal configuration of the slave device 20C configured as a memory card. The slave device 20C has a substrate 20a. The board | substrate 20a is accommodated in the case not shown. The substrate 20a is provided with a second control unit 21, a wireless communication controller 24a, a coupler 24b, and an output unit 25. The second control unit 21 is, for example, a controller. The wireless communication controller 24 a and the coupler 24 b are examples of the wireless communication unit 24. The wireless communication controller 24a includes a wireless communication circuit that performs frequency conversion, filtering, modulation / demodulation, amplification, and the like. The wireless communication unit 24 may include an antenna instead of the coupler 24b. The output unit 25 is, for example, an LED (display output unit). The output unit 25 is provided at a position where the slave device 20C is exposed from the host device 10C in a state where the slave device 20C is attached to the host device 10C. The output unit 25 is provided on the substrate 20a and is located closer to the end 20a1 (corner) than to the end 20a2 (corner). The coupler 24b is provided on the substrate 20a and is located closer to the end 20a2 than to the end 20a1. With such a configuration, the output unit 25 and the coupler 24b can be arranged more efficiently on the substrate 20a without interfering with each other. The present embodiment is easily applied to more models of the host device 10C because the control of the host device 10C becomes unnecessary.

(Fifth embodiment)
FIG. 13 is a block diagram of a system 1D of the fifth embodiment. FIG. 14 is a perspective view of the system 1D. As illustrated in FIG. 13, the system 1D includes a host device 10, a slave device 20, and an external device 30D. Also in the system 1D, the control of the output unit 15 is executed according to the procedure shown in FIG. 3 as in the first embodiment.

  The external device 30 </ b> D includes a third control unit 31, a memory 33, a wireless communication unit 34, a drive unit 36, and a camera 37.

  The third control unit 31 includes a storage control unit 31a, a wireless communication control unit 31b, an imaging control unit 31h, and a drive control unit 31i. The storage control unit 31a controls reading of data from the memory 33, writing of data to the slave device 20, reading of data from the slave device 20, writing of data to the memory 33, and the like. The storage control unit 31a can also be referred to as an external control unit or a wireless data transmission / reception control unit. The wireless communication control unit 31 b controls the wireless communication unit 34. The imaging control unit 31 h controls imaging by the camera 37. The drive control unit 31 i controls the drive unit 36. The drive control unit 31i can be referred to as a movement control unit.

  The memory 33 is a non-volatile rewritable memory, and is, for example, a hard disk drive (HDD), a solid state drive (SSD), or the like. The memory 33 is an example of a storage unit.

  The wireless communication unit 34 includes a wireless communication circuit (not shown), a coupler (antenna), and the like, and transmits and receives signals (data) wirelessly with the wireless communication unit 24. The wireless communication circuit performs frequency conversion, filtering, modulation / demodulation, amplification, and the like. For example, the wireless communication unit 34 can perform wireless communication by short-range wireless communication, but is not limited thereto, and may perform wireless communication by another method of the wireless LAN.

  The drive unit 36 changes the rotation and steering of the wheels 30a (FIG. 14) and moves the external device 30D. That is, the drive unit 36 changes the position of the external device 30D. The drive unit 36 is, for example, a motor.

  The camera 37 is, for example, a digital video camera or a digital still camera. The camera 37 can photograph the output unit 15. The camera 37 can have a wide-angle lens or a fisheye lens. The camera 37 can acquire the display output result of the output unit 15 (display output unit) by display. That is, the camera 37 is an example of an output result acquisition unit. The external device 30 </ b> D may include a microphone that acquires the audio output result of the audio output unit 15 (audio output unit) instead of the camera 37. In this case, the microphone is an example of an output result acquisition unit. The camera 37 can be referred to as an imaging unit or an input unit, and the microphone can be referred to as a sound collection unit or an input unit.

  The function of the third control unit 31 can be realized by, for example, a program (software, application) installed in the memory 33, ROM (not shown), or the like. Further, at least a part of the functions of the third control unit 31 may be realized by hardware.

  As shown in FIG. 14, the host device 10 is a small helicopter that has a propeller and can be moved or stopped in the air. The host device 10 and the slave device 20 have the same configurations as those of the first embodiment, the second embodiment, and modifications thereof. That is, the output state of the output unit 15 as the display output unit provided in the host device 10, for example, the color, the blinking frequency, etc., depends on the data transfer rate of wireless transmission / reception between the slave device 20 and the external device 30D. Change.

  The external device 30D is a mobile heliport to which the host device 10 that is a small helicopter can take off and land. The external device 30D has a plurality of wheels 30a and a steering device (not shown), and can move by rotating or turning the wheels 30a. The external device 30 </ b> D can acquire data captured by a camera (not shown) provided in the host device 10 by wireless communication with the slave device 20. Therefore, the external device 30D can be referred to as a data receiver, a mobile base station, a data collection station, or the like.

  In FIG. 14, the host device 10 is hovering and is stationary at a substantially constant position in the air. The drive control unit 31i of the external device 30D is configured so that the output unit 15 is connected to the slave device 20 and the external device 30D by feedback control of the drive unit 36 and the steering device based on the imaging result (image) of the output of the output unit 15 by the camera 37. The wheel 30a and the steered device are controlled so as to be in an output state (for example, a state in which the blinking frequency is higher) corresponding to a higher communication state with a higher data transfer rate of wireless transmission / reception between As a result, the external device 30D is moved. Specifically, the third control unit 31 functions as an output state acquisition unit, and acquires the output state of the output unit 15 from the imaging result of the camera 37. The third control unit 31 functions as a data transfer rate acquisition unit, and is acquired with reference to data indicating the output state of the output unit 15 corresponding to the data transfer rate stored in the storage unit such as the memory 33. The data transfer rate corresponding to the output state is acquired. And the 3rd control part 31 functions as the drive control part 31i, and the drive part 36 and the steered apparatus by feedback control etc. based on a data transfer rate so that the data transfer rate acquired in this way may become high. Change the position and posture of the. Thereafter, when the host device 10 is lowered while the external device 30D continues the above control, the host device 10 communicates wirelessly between the slave device 20 and the external device 30D on the external device 30D. You can land in a good position. Therefore, it becomes easier to complete the data transfer between the slave device 20 and the external device 30D more quickly. The external device 30D is not limited to the example of FIG. 14, and may be a movable device having a drive unit 36 that moves the movable unit. Specifically, the movable unit may be, for example, an arm, a leg, a belt-type moving mechanism, or the like, and the external device 30D may be, for example, a robot arm, a robot, a small vehicle, or the like. Note that the storage unit that stores data indicating the output state corresponding to the data transfer rate may be a ROM, a RAM, or the like of the external device 30D.

(Sixth embodiment)
FIG. 15 is a block diagram of a system 1E according to the sixth embodiment. FIG. 16 is an explanatory diagram illustrating the timing at which a signal (data) is transmitted wirelessly between the slave device 20 and the external device 30E. Also in the system 1E, the control of the output unit 15 is executed according to the procedure shown in FIG. 3 as in the first embodiment. The external device 30E includes the same drive control unit 31i and drive unit 36 as those in the fifth embodiment. Therefore, the system 1E of the present embodiment can obtain the same effect as that of the fifth embodiment. However, this embodiment is different from the fifth embodiment in that the external device 30E does not have the camera 37, and the drive control unit 31i controls the drive unit 36 based on a control signal transmitted wirelessly. ing.

  The third control unit 31 includes a transfer rate acquisition unit 31c. The transfer rate acquisition unit 31c acquires the data transfer rate of transmission / reception between the slave device 20 and the external device 30E by wireless communication from the slave device 20. In addition, the drive control unit 31i is configured so that the wheel 30a and the wheel 30a are in a higher state by the feedback control of the drive unit 36 and the steering device based on the data transfer rate acquired by the transfer rate acquisition unit 31c. The external device 30E is moved by controlling the steering device.

  As shown in FIG. 16, the control signals (D1, D2,...) Transmitted wirelessly from the slave device 20 to the external device 30E are, for example, a plurality of packets of content data such as images, moving images, and files. (P11-P1n, P21-P2n, P31-) are transmitted at a timing during transmission. Accordingly, the slave device 20 can transmit a control signal including a data transfer rate to the external device 30E without hindering wireless transmission / reception of content data between the slave device 20 and the external device 30E. it can. In this case, the slave device 20 transmits a control signal (D1, D2,...) To the external device 30E every time a predetermined number (a fixed number, n) of packets is transmitted or received. Thereby, the slave device 20 can transmit a control signal to the external device 30E at a predetermined time interval (for example, a constant time interval). The content data may be transmitted from the slave device 20 to the external device 30E, or may be transmitted from the external device 30E to the slave device 20. The present embodiment is also applicable when the system 1E and the external device 30E of the present embodiment do not have the camera 37. Note that a control signal for controlling the drive unit 36 may be transmitted from the slave device 20 to the external device 30E instead of the control signal indicating the data transfer rate.

(Seventh embodiment)
FIG. 17 is a block diagram of a system 1F according to the seventh embodiment. FIG. 18 is a perspective view of the system 1F. The system 1F includes a host device 10C, a slave device 20, and an external device 30F. However, the present embodiment is not the output unit (not shown) of the host device 10C, but the output state of the output unit 35 of the external device 30F changes according to the data transfer rate. Or, it is different from the system 1E of the sixth embodiment.

  The external device 30 </ b> F includes an output unit 35 similar to the output unit 15. The third control unit 31 includes an output control unit 31d. The output control unit 31d controls output from the output unit 35. The transfer rate acquisition unit 31c acquires the data transfer rate of transmission / reception between the slave device 20 and the external device 30F from the slave device 20 by wireless communication. The output control unit 31d refers to the data indicating the output state of the output unit 35 corresponding to the data transfer rate stored in the storage unit such as the memory 33 based on the data transfer rate acquired by the transfer rate acquisition unit 31c. Then, the output unit 35 is controlled so as to execute the output corresponding to the data transfer rate as exemplified in FIGS. Note that the slave device 20 transmits a control signal including a data transfer rate to the external device 30F as in the sixth embodiment. In the present embodiment, the output state of the output unit 35 changes based on the wireless data transfer rate between the slave device 20 and the external device 30F. Therefore, for example, as shown in FIG. 18, the user changes the relative position between the host device 10C to which the slave device 20 is attached and the external device 30 in accordance with the output of the output unit 35, and thereby the host device 10C. And the external device 30 can be set in an arrangement in which the communication state between the slave device 20 and the external device 30 is better. As a result, data transfer between the slave device 20 and the external device 30 can be completed more quickly.

  In the sixth embodiment or the seventh embodiment, the external devices 30E and 30F may have a transfer rate detection unit (not shown) instead of the transfer rate acquisition unit 31c. In this case, the slave device 20 does not transmit a signal indicating a data transfer rate or an output control signal (control signal) to the external devices 30E and 30F.

  The above embodiment has been presented as an example, and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof. In addition, the configuration and shape of each embodiment and each modification may be partially exchanged. In addition, specifications (structure, type, direction, shape, size, length, width, thickness, height, number, arrangement, position, material, etc.) of each configuration and shape, etc. are changed as appropriate. can do.

  DESCRIPTION OF SYMBOLS 10,10A-10C ... Host device, 20, 20A-20C ... Slave device, 30, 30D-30F ... External device, 11 ... First control unit (error rate acquisition unit), 11c ... Transfer rate acquisition unit, 11d, 21d, 31d ... output control unit, 13, 23, 33 ... memory (storage unit), 15, 25, 35 ... output unit, 21c ... transfer rate detection unit, 31 ... third control unit (output state acquisition unit), 31i: drive control unit, 36: drive unit, 37: camera (output result acquisition unit).

Claims (15)

A host device that can send and receive data by wire between an external device and a slave device that can send and receive data wirelessly,
A display or audio output,
A transfer rate acquisition unit for acquiring, from the slave device, a data transfer rate of transmission and reception between the slave device and the external device detected in the slave device;
A storage unit for storing data indicating an output state of the output unit corresponding to the data transfer rate;
An output control unit that acquires data indicating an output state corresponding to the data transfer rate acquired by the transfer rate acquisition unit by referring to the storage unit, and controls the output unit to be in the output state;
A host device comprising: The output unit switches between an operating state and a stopped state at a predetermined interval,
The storage unit stores data indicating the interval corresponding to the data transfer rate as data indicating the output state,
The output control unit acquires data indicating the interval corresponding to the data transfer rate acquired by the transfer rate acquisition unit by referring to the storage unit, and the operation state and the stop state are determined at the interval. The host device according to claim 1, wherein the output unit is controlled to be switched.   The storage unit corresponds to a first interval corresponding to the first data transfer rate and a second data transfer rate higher than the first data transfer rate and shorter than the first interval. The host device according to claim 2, wherein an interval is stored. An error rate acquisition unit for acquiring an error rate of transmission / reception between the slave device and the external device detected by the slave device from the slave device,
The storage unit stores data indicating the interval corresponding to the error rate,
The output control unit acquires data indicating the interval corresponding to the error rate acquired by the error rate acquisition unit by referring to the storage unit, and the operation state and the stop state are determined at the interval. The host device according to claim 1, wherein the output unit is controlled to be switched. The output unit includes a plurality of display output units having different colors.
The storage unit stores data indicating a color corresponding to the data transfer rate as data indicating the output state,
The output control unit acquires data indicating the color corresponding to the data transfer rate acquired by the transfer rate acquisition unit by referring to the storage unit, and the display output unit that outputs the color outputs the data. 5. The host device according to claim 1, which controls the display output unit.   The output control unit controls the output unit to stop the output when the first duration in which the data transfer rate is higher than the first threshold is longer than the second threshold. The host apparatus as described in any one of Claims 1-5.   The output control unit controls the output unit to resume output when the data transfer rate becomes lower than a third threshold in a state where the output unit is controlled to stop output. The host device according to claim 6.   The output control unit controls the output unit to resume output when the rate of decrease in the data transfer rate is greater than a fourth threshold in a state where the output unit is controlled to stop output. The host device according to claim 6 or 7. A host device that can send and receive data by wire between an external device and a slave device that can send and receive data wirelessly,
A display or audio output,
A transfer rate acquisition unit for acquiring, from the slave device, a data transfer rate of transmission and reception between the slave device and the external device detected in the slave device;
A storage unit for storing data indicating an output state of the output unit corresponding to a change rate of the data transfer rate;
Output control for acquiring data indicating an output state corresponding to the rate of change of the data transfer rate acquired by the transfer rate acquisition unit by referring to the storage unit and controlling the output unit so as to be in the output state And
A host device comprising: A slave device capable of transmitting and receiving data by wire to and from a host device having a display or audio output unit and wirelessly transmitting and receiving data to and from an external device;
A transfer rate detection unit for detecting a data transfer rate of wireless transmission and reception between the slave device and the external device;
A storage unit for storing data indicating an output state of the output unit corresponding to the data transfer rate;
Data indicating an output state corresponding to the data transfer rate detected by the transfer rate detection unit is acquired by referring to the storage unit, and is sent to the host device by wire to output the output unit in the host device. An output control signal generation unit that generates an output control signal used for control to be in a state;
A slave device with A slave device capable of transmitting and receiving data by wire to and from a host device having a display or audio output unit and wirelessly transmitting and receiving data to and from an external device;
A transfer rate detection unit for detecting a data transfer rate of wireless transmission and reception between the slave device and the external device;
A storage unit for storing data indicating an output state of the output unit corresponding to the data transfer rate;
Data indicating an output state corresponding to the data transfer rate detected by the transfer rate detection unit is acquired by referring to the storage unit by being electrically connected to the output unit by wire, and the output state is set. An output control unit for controlling the output unit;
A slave device with A slave device that can send and receive data to and from a host device by wire and can send and receive data to and from an external device wirelessly,
A display or audio output,
A transfer rate detection unit for detecting a data transfer rate of wireless transmission and reception between the slave device and the external device;
A storage unit for storing data indicating an output state of the output unit corresponding to the data transfer rate;
An output control unit that acquires data indicating an output state corresponding to the data transfer rate detected by the transfer rate detection unit by referring to the storage unit, and controls the output unit to be in the output state;
With electronic equipment. An external device capable of transmitting and receiving data wirelessly to and from a slave device capable of transmitting and receiving data with a host device having a display or audio output unit,
A drive unit for moving the external device;
An output state acquisition unit that acquires a display or audio output state of the output unit that changes according to a data transfer rate of wireless transmission and reception between the slave device and the external device;
A storage unit for storing data indicating an output state of the output unit corresponding to the data transfer rate;
By referring to the storage unit, the data transfer rate corresponding to the output state acquired by the output state acquisition unit is acquired, and the drive unit is controlled to move to a position where the data transfer rate becomes higher A drive control unit;
With external equipment. An external device capable of transmitting and receiving data wirelessly to and from a slave device capable of transmitting and receiving data with a host device having a display or audio output unit,
A drive unit for moving the external device;
A transfer rate acquisition unit for acquiring, from the slave device, a data transfer rate of transmission and reception between the slave device and the external device detected in the slave device;
A drive control unit that controls the drive unit so as to move to a position where the data transfer rate becomes higher;
With external equipment. An external device capable of transmitting and receiving data wirelessly between a host device and a slave device capable of transmitting and receiving data by wire,
A display or audio output,
A transfer rate acquisition unit for acquiring, from the slave device, a data transfer rate of transmission and reception between the slave device and the external device detected in the slave device;
A storage unit for storing data indicating an output state of the output unit corresponding to the data transfer rate;
An output control unit that acquires data indicating an output state corresponding to the data transfer rate acquired by the transfer rate acquisition unit by referring to the storage unit, and controls the output unit to be in the output state;
With external equipment.

Images