JPH0520272A - Computer - Google Patents

Abstract

PURPOSE:To enjoy television(TV) broadcasting by a computer. CONSTITUTION:A computer body 1 is constituted so that an IC card 11 or a TV tuner card 12 can be selectively loaded to its connector 4. An antenna 29 is incorporated in the body 1 and the output of the antenna 29 is supplied to the card 12. A video signal outputted from the card 12 is supplied to a video RAM 24 through an A/D converter 26 and then supplied to an LCD 3 to display an image.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer suitable for application to a portable computer such as an electronic notebook device.

[0002]

2. Description of the Related Art Recently, the size of a computer has been reduced from a laptop type to a book type or a notebook type. As a smaller computer than the notebook computer, there is, for example, a portable computer represented by an electronic notebook device. With such miniaturization, it has become possible to carry a computer and go to various places.

[0003]

However, the conventional device is not used as an original computer,
There were only uses to enjoy games using game software. As a result, it was poor in developability and had low commercial value.

The present invention has been made in view of such a situation, and makes it possible to use a computer in a more advanced manner and further enhance its commercial value.

[0005]

A computer of the present invention comprises a connector into which an IC card or a television tuner card can be selectively mounted, an antenna for receiving radio waves of television broadcasting, and a video RAM for storing image data. And the connector has a first pin for supplying the output of the antenna to the TV tuner card and a second pin for supplying the television signal demodulated by the TV tuner card to the video RAM.

[0006]

In the computer having the above construction, a TV tuner card is mounted in the connector instead of the IC card. The output of the antenna is fed to the TV tuner card where it is demodulated. The demodulated output is supplied to the video RAM and stored. Therefore, it becomes possible to enjoy television broadcasting using a computer.

[0007]

FIG. 2 is a perspective view showing the configuration of an embodiment of a computer according to the present invention. This computer body 1
Input unit 6 in which a keyboard 2 having various keys is arranged
And a display unit 7 which can be opened and closed with respect to the input unit 6. The display unit 7 is provided with the LCD 3. Further, the connector 4 is provided on the right side surface of the input unit 6.
And 5 are provided, and the IC card 11 is connected to the connector 4.
Alternatively, the TV tuner card 12 is selectively attached. A cord for inputting and outputting a television signal is connected to the connector 5.

FIG. 1 is a block diagram showing the internal electrical configuration of the computer main body 1. CPU21 is a ROM
A predetermined calculation is executed according to the program stored in 22, and the calculation result is stored in the RAM 23 as needed. The video RAM 24 stores image data to be displayed on the LCD 3. The power supply circuit 25 supplies necessary power to each unit. The power supply circuit 25 is configured to rectify and use a commercial AC voltage, or use the output of a built-in battery. The above configuration is the same as in the case of a conventional normal computer.

In addition to this, in the present embodiment, the antenna 2
9 and an A / D converter 26 are provided. The antenna 29 is for receiving television broadcasting, and can be configured by disposing a printed wiring board or the like inside the input unit 6 or the display unit 7. Alternatively, it is also possible to use a bar antenna or the like. Further, the antenna 29 can be built-in type as described above, or can be attached to the input section 6 or the display section 7 from the outside if necessary. In this case, the input section 6 or the display section 7 is provided with an antenna connection terminal.

In this embodiment, the connector 4 is provided with five pins 4a to 4e. When the IC card 11 is attached to the connector 4, the pin 4a is
It is connected to the pin 11a of the IC card 11,
Data can be transmitted and received between the CPU 21 and the IC card 11. The pin 4b is connected to the pin 11b of the IC card 11, and supplies the voltage supplied from the power supply circuit 25 to the IC card 11. That is, these pins are included in a normal computer.

On the other hand, the pin 4c is connected to the antenna 29, and the connector 4 is connected to the TV tuner card 1
TV tuner card 1 when 2 is installed
It is connected to the second pin 12c. The pin 4d is connected to the pin 12d of the TV tuner card 12, and causes the CPU 21 to supply a predetermined command to the TV tuner card 12. The pin 4d can be shared with the pin 4a if necessary. The pin 4e is connected to the pin 12e of the TV tuner card 12, and outputs the output of the TV tuner card 12 to the switch 28 and the A / D converter 2
6, and is supplied to the video RAM 24 via the switch 27. The pin 12b of the TV tuner card 12 is connected to the pin 4b of the connector 4 so that the voltage supplied from the power supply circuit 25 is supplied to the TV tuner card 12.

A video signal is supplied to the pin 5a of the connector 5 from the outside. In addition, the video signal selected by the switch 28 is the pin 5 of the connector 5.
It is designed to be output from b.

The switch 28 is configured to selectively select the video signal input from the pin 4e of the connector 4 or the pin 5a of the connector 5 and supply it to the converter 26. The switch 27 selects either the data supplied from the CPU 21 or the data supplied from the A / D converter 26, and supplies the selected data to the video RAM 24.

The TV tuner card 12 is shown in FIG.
It is configured as shown in. That is, in this embodiment, the television tuner card 1 is configured by the channel selection circuit 41, the demodulation circuit 42, the channel control circuit 43, and the power supply circuit 44.
2 is configured. The output of the antenna 29 is pin 12c
Is supplied to the channel selection circuit 41 via the pin, and the output of the CPU 21 is supplied to the channel control circuit 43 via the pin 12d. Further, the voltage supplied from the power supply circuit 25 of the computer main body 1 is supplied to the power supply circuit 44 of the television tuner card 12 via the pin 12b. Then, the power supply circuit 44 supplies necessary power to the tuning circuit 41, the demodulation circuit 42 and the channel control circuit 43. The output of the demodulation circuit 42 is supplied to the computer main body 1 via the pin 12e.

Next, the operation will be described. For example, when this computer is used as a word processor, by operating a predetermined key of the keyboard 2, the CP
It issues the command to U21. At this time, CPU2
Reference numeral 1 calls a necessary program from the ROM 22 to execute word processing. That is, the character corresponding to the data supplied from the keyboard 2 is called from the dictionary stored in the ROM 22, the data is supplied to and stored in the RAM 23, and the data is called from the RAM 23, and the contact A of the switch 27 is turned on. Through video ram
Supply to 24. The data supplied to the video RAM 24 is read out, supplied to the LCD 3 and displayed.

When the IC card 11 is connected to the connector 4, the CPU 21 stores the created sentence in the RAM 23, reads the data, and outputs the data to the pins 4a,
It is transferred to and stored in the IC card 11 via 11a.
The text created in this way can be written in the IC card 11.

Next, the case where this computer is used as a television receiver will be described. At this time, first, the TV tuner card 12 is connected to the connector 4 instead of the IC card 11. When a predetermined key of the keyboard 2 is operated to instruct selection of a predetermined channel,
The CPU 21 supplies a channel selection signal to the channel control circuit 43 of the television tuner card 12 via the pins 4d and 12d. The channel control circuit 43 controls the channel selection circuit 41 in response to the input channel selection signal, and converts the output of a predetermined channel of the antenna 29 into an intermediate frequency signal (IF signal).

This intermediate frequency signal is supplied to the demodulation circuit 42 and demodulated. The video signal output from the demodulation circuit 42 is supplied to the contact B of the switch 28 via the pins 12e and 4e. When the television reception mode is selected via the keyboard 2, the CPU 21 switches the switches 27 and 28 to the contact B side. As a result, the video signal output from the demodulation circuit 42 of the TV tuner card 12 is transmitted via the switch 28 to the A / D converter 2
6 and is A / D converted. Then, the A / D converted video data is transferred to the video RA via the switch 27.
It is supplied to M24 and written. Then, the video data written here is read out, supplied to the LCD 3 and displayed as in the case of a normal computer process. In this way, the video image of the channel received by the antenna 29 is displayed on the LCD 3.

When the keyboard 2 is operated to instruct the selection of the external video signal, the CPU 21 switches the switch 28 to the contact A.
Switch to the side. As a result, for example, a video signal output from a video disc player (not shown) is input via the pin 5a of the connector 5, and this video signal is A /
After being A / D converted by the D converter 26, the video R
It is written in the AM 24 and is further displayed on the LCD 3.

The video signal selected by the switch 28 is output from the pin 5b of the connector 5. Therefore, by connecting an external CRT or LCD to the pin 5b, it is possible to monitor the video signal output from the TV tuner card 12 or the video signal input from the pin 5a. Become.

Although the A / D converter 26 is incorporated in the computer main body 1 in the above embodiment, it may be incorporated in the television tuner card 12.

In the above description, only the video signal has been described for the sake of convenience, but it goes without saying that the audio signal corresponding to the video signal is also reproduced and output in the same manner.

[0023]

As described above, according to the computer of the present invention, the IC card and the television tuner card can be selectively mounted, and when the IC card is connected, the computer can function as the original computer. When the TV tuner card is installed, the TV broadcast is received, so that it is possible to add more functions to the computer and enhance the commercial value. Further, since the function is added by mounting the card, the weight and size can be reduced, which is advantageous for carrying.

[Brief description of drawings]

FIG. 1 is a block diagram showing an internal configuration in the embodiment of FIG.

FIG. 2 is a perspective view showing the configuration of an embodiment of a computer of the present invention.

FIG. 3 is a television tuner card 1 according to the embodiment shown in FIG.
2 is a block diagram showing an internal electrical configuration of FIG.

[Explanation of reference numerals] 1 computer main body 2 keyboard 3 LCD 4,5 connector 6 input unit 7 display unit 11 IC card 12 TV tuner card 21 CPU 22 ROM 23 RAM 24 video RAM 25 power supply circuit 26 A / D converter 29 antenna 41 selection Station circuit 42 Demodulation circuit 43 Channel control circuit

Claims (1)

Claim: What is claimed is: 1. A connector to which an IC card or a TV tuner card can be selectively attached, a video RAM for storing image data, an antenna for receiving radio waves of television broadcasting, and the connector. A first pin for supplying the output of the antenna to the TV tuner card and a second pin for supplying the television signal demodulated by the TV tuner card to the video RAM when the TV tuner card is mounted. A computer characterized by comprising.