JPH0712963A - Clock device - Google Patents

Abstract

PURPOSE:To always hold a timer at accurate time by receiving time information by automatically detecting the making of power supply and performing time setting or correction and, at the same time, intermittently and automatically correcting the time. CONSTITUTION:A time, setting system is constituted of a transmitter 4 and receiver 5. When, for example, composite video signals 1 are supplied to a mixer 2 and time signal generator 3, the generator 3 generates time signals 10 and the mixer 2 generates broadcasting signals 11 by mixing the time signals 10 with the video signals 1. The transmitter 4 transmits the broadcasting signals 11. The receiver 5 receives the signals 11 and outputs the video signals 1 to a TV receiver and time signal decoder 7. The decoder 7 extracts the time signals 10 from the video signals 1 and combines the signals 10 into such time data as the year, month, day, hour, minute, and second. A timer 8 sets the time when the data 12 are written. A controlling microcomputer 6 turns on the receiver 5 and decoder 7 simultaneously with the making of power supply and permits the timer 8 to write the data 12. Thereafter, the microcomputer 6 periodically repeats these operations.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece device or a timepiece device suitable for use in various electronic devices incorporating the timepiece device.

[0002]

2. Description of the Related Art Conventionally, various electronic devices such as VTRs,
JP-A-2-301329 discloses a configuration in which a TV receiver, a cassette tape recorder with a tuner or the like receives time information included in a transmission signal and sets the time.

The outline of the configuration disclosed in the above publication will be described. RD standardized by the European Broadcasting Union
S (Radio Data System) is used. This RDS is a method of multiplex-transmitting time information data in FM broadcasting, and this time information data (CT signal) is used for correction of time difference in minutes, summer / winter time, and the like.

Such a CT signal is received by a QRS (quick release bracket) type radio receiver,
When the radio receiver is attached or detached, the time is set based on the time information data, and the set time is displayed.

[0005]

Generally, a TV receiver, V
Electronic devices such as TR have a clock display function, and these are provided with a clock device (hereinafter referred to as a timer). This timer is configured to calculate the time data by dividing and counting the reference pulse, but if the time is set by using the time information of the above-mentioned broadcast signal when these timers are installed or after a power failure. , The user can save the time setting.

However, since the timer itself does not have a built-in accurate clock circuit, there is a problem that the time may change with the passage of time, and electronic recording such as a TV receiver or VTR equipped with a reservation function performs timer recording. At this time, the inconvenience may occur such as the beginning of the program being cut off. In order to avoid such problems, the user needs to make timely corrections, but every time the corrections are made, the power plug of the electronic device must be inserted and removed for initial setting, which is a troublesome problem. It was

The present invention has been made in order to solve the above-mentioned problems, and its purpose is to always perform automatic and intermittent re-correction after setting a timer automatically. It is intended to provide a timer that can hold an accurate time.

[0008]

The first timer of the present invention
The (timepiece device) is a time device as shown in FIG.
Information is sent to set or correct the time.
Timekeeping for a predetermined time in a clock device made like a bow
The timepiece device has a detection means (ST₂) To
Receives time information when power is turned on and sets or corrects time
(ST _Four), And after that, the time is automatically corrected
It was done like this.

The second timer of the present invention is a transmission signal 1 having time information as shown in FIGS. 1 and 2, for example.
A time signal receiving means 5 for receiving the time signal, and a time information extracting means 7 for extracting time information from the time signal receiving means 5,
The time information is supplied from the time information extracting means 7 and includes a clock means 8 for measuring a predetermined time and a control means 6 for controlling the time signal receiving means 5 and the time information extracting means 7. The control means 6 Is a detection means 6a for detecting power-on
The time information from the time information extracting means 7 is supplied to the clock means 8 by the time setting means 6b on the basis of the detection signal of, to set or correct the time information, and thereafter, the time is automatically corrected intermittently. The time signal receiving means and the time information extracting means are turned on only when the time is set or corrected.

[0010]

In the timer of the first aspect of the present invention, the power-on is automatically detected, the time signal is written in the decoder, and the time is automatically set or corrected. Since the time is automatically set or corrected, just turning on the power always sets the correct time,
It is possible to obtain an electronic device with a built-in timer that does not cause the beginning of a program to be recorded by timer recording or the like.

The timer according to the second aspect of the present invention has a control means 6, and the control means 6 detects the power-on.
The time information from the time information extracting means 7 is supplied to the timer 8 by the time setting means 6b on the basis of the detection signal to set or correct the time information, and thereafter, the time is automatically adjusted intermittently. Since the power supply of the time signal receiving means 7 and the time information extracting means 5 is turned on only when the time is set and the time is adjusted, power consumption is low, and accurate time setting and correction can be obtained even after a power failure.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The timepiece device of the present invention will be described below as a TV receiver or V
A configuration applied to TR and the like will be described. The timepiece device applicable to this example is the timepiece device itself, or a radio receiver or TV.
It is defined as a clock device (timer), including electronic devices with built-in clock devices that are built into receivers such as receivers and broadcasting equipment.
Proceed with the explanation.

Before explaining the flow chart of the present example of FIG. 1, an overall system diagram of the time setting system will be explained with reference to FIGS. 2 to 4.

In FIG. 2, the time setting system comprises a transmitter 4 and a receiver 5. For example, the NTSC composite video signal 1 is supplied to the mixer 2 and the time signal generator 3.

As shown in FIG. 3, the time signal generator 3 supplies the composite video signal 1 to the sync separator 3a. Sync separator 3
Reference symbol a separates the sync signal from the composite video signal 1 and supplies it to the timing generator 3b. The timing generator 3b generates a timing signal for superimposing the time signal 10 on the composite video signal 1. The timing signal generated by the timing generator 3b is supplied to the time data generator 3c to generate the time signal 10. The mixer 2 mixes the time signal 10 with the composite video signal 1.

One of the formats of such a time signal 10
An example is shown in FIG. That is, the time signal 10 is the control information, the year,
It is composed of data of month, day, hour, minute and second, and is superimposed on the composite video signal 1. The "preamble" is a 1 that alternates between "0" and "1" to extract the clock from the data string of this signal.
6-bit data. "Frame sync" is 16-bit data of a fixed pattern that indicates the beginning of subsequent data.
"Year" is 16-bit data representing the year. “Month / day of the week” is 4-bit data representing the month and the day of the week.
"Day", "hour", "minute", and "second" are 8-bit data each representing day, hour, minute, and second. The "check code" is 16-bit data for detecting an error.

As shown in FIG. 6, such a time signal 10 is inserted by the above-mentioned timing signal between the horizontal synchronizing signals in the vertical blanking period of the composite video signal and transmitted as the broadcast signal 11 via the transmitter 4. It

On the receiver side, the receiver 5 receives the time signal 10 by receiving the broadcast signal 11, the time signal decoder 7 for separating the time signal 10 from the composite video signal 1 of the broadcast signal 11, and the time signal decoder Time signal 1 separated by 7
The control microcomputer 6 controls the receiver 5 and the time signal decoder 7 as well as the timer 8 to which 0 is supplied.

The receiver 5 receives the broadcast signal 11 and outputs the composite video signal 1 to a TV receiver or the like. FIG. 4 shows the configuration of the time signal decoder 7. The composite video signal 1 received by the receiver 5 is supplied to the time separator decoder 7a as well as the time data decoder 7c of the time signal decoder 7. The sync separator 7a extracts a sync signal from the composite video signal 1, generates a timing signal in which the time signal 10 is inserted by the timing generator 7b, and supplies the timing signal to the time data decoder 7c. The time data decoder 7c extracts the time signal based on the timing signal extracted from the composite video signal, and extracts the year, month,
The time data 12 of day, hour, minute, and second is combined.

When the time data 12 is written, the timer 8 takes in the time data into the timer 8 and sets the time.

When the power supply is initially turned on, the control microcomputer 6 turns on the power supply of the receiver 5 and the time signal decoder 7, and permits the time signal decoder 7 to write the time data to the timer 8. After that, this operation is repeated every hour, and is controlled by software so that an accurate time is always set. That is, as shown in the functional block of FIG.
It has a memory 6c for M and the like, and a time setting (correction) unit 6b as well as the power-on detection unit 6a.

A flow chart of the control microcomputer 6 is shown in FIG. In FIG. 1, when the power of the timer itself or the electronic device with the built-in timer is turned on as shown in the first step ST ₁ , the control microcomputer 6 determines whether or not the AC power is detected in the second step ST _2. It This power-on state (rising state) is determined by inserting the timer or the power cord plug of the electronic device with built-in timer into the AC power outlet, or turning on the power switch for power supply.
It may be one that detects a struck state or a power failure state,
If NO in which the rising state of the AC power source is not detected, the process returns to the beginning of the second step ST ₂ , and YES in which the rising state of the AC power source is detected by any of the above detection methods.
In the state, the process proceeds to the next third step ST ₃ .

In the third step ST ₃ , the control microcomputer 6 outputs a control signal for turning on the power supplies of the receiver 5 and the time control decoder 7.

Next, in the fourth step ST ₄ , the control microcomputer 6 permits the time signal decoder 7 to write the time data 12, so that the timer 8 takes in the time of this time data and sets or corrects the time. Be done.

When this setting or correction is made, the following fifth
At step ST ₅ , the control microcomputer 6 outputs a control signal for turning off the power supplies of the receiver 5 and the time signal decoder 7.

In the next sixth step ST ₆ , the control microcomputer determines whether or not one hour has passed after a predetermined time, one hour in this example. That is, the time is constantly monitored,
In 1 hour elapsed YES state shifts to the seventh step ST _7, the power of the third step ST ₃ similarly to the receiver 5 and the clock signal decoder 7 outputs a control signal to "ON", the following 8 It proceeds to step ST ₈ .

The eighth step ST ₈ is the fourth step ST ₄
Similarly, the data write permission of the time signal decoder 7 is made, and the timer 8 is made the time correction based on the time data.

In the next ninth step ST ₉ , the receiver 5 and the time signal decoder are powered off as in the fifth step ST _5, and the operation is returned to the sixth step ST ₆ . Timer 8 power is "on" in step ST ₆ with 2 receiver after hours passed 5 and time signal decoder 7 is fixed on the basis of the time signal power is "off". That is, the timer 8 or an electronic device with a built-in timer is intermittently time-corrected to always hold accurate time data. Therefore, it is possible to provide a timer in which the recorded program is not cut off due to timer recording such as VTR. Further, the power supplies of the receiver 5 and the time signal decoder 7 are controlled to be "on" and "off" only when the time data is fetched, so that power consumption can be saved.

In the above-mentioned embodiment, the time is intermittently corrected every hour, but it goes without saying that this time interval can be set appropriately. Also, the time code is not limited to the configuration shown in FIG. 5, and SMPTE, EBU, VIV
T time code, JJY signal, etc. may be used. When a power failure state is detected, the state is stored in the memory 6c,
After the power failure is restored, it is possible to prevent the failure of timer recording etc. by displaying that there is a power failure condition on the CRT etc. of the TV receiver.

Further, the timer (clock device) of this embodiment includes the timer itself, or an electronic device such as a VTR having a built-in timer or a TV receiver.

[0031]

According to the timepiece device (timer) of the present invention, the power setting is automatically made only by the user turning on the AC power after purchasing the timer, and thereafter the time is intermittently corrected, so that the correct time is set. It is possible to set the time and hold the power consumption, the power consumption is low, and even if there is a power failure or the plug is disconnected from the outlet, the time can be set automatically when the power is turned on.

[Brief description of drawings]

FIG. 1 is a flow chart of a control microcomputer used in a timepiece device of the invention.

FIG. 2 is a system system diagram for setting the time of the timepiece device of the present invention using a broadcast signal.

FIG. 3 is a configuration diagram of a time signal generator used in the timepiece device of the invention.

FIG. 4 is a configuration diagram of a time signal decoder used in the timepiece device of the invention.

FIG. 5 is an explanatory diagram of a format of a time signal used in the timepiece device of the invention.

FIG. 6 is a waveform diagram in which a time signal used in the timepiece device of the invention is superimposed on a composite video signal.

[Explanation of symbols]

 1 Composite video signal 2 Mixer 3 Clock signal generator 6 Control microcomputer 6a Power-on detection unit 6b Clock setting (correction) unit 7 Time signal decoder 8 Timer

Claims (6)

[Claims] 1. A timepiece device configured to receive a transmission signal having time information and set or correct the time, wherein the timepiece device for measuring a predetermined time is detected by a detecting means for detecting power-on. A timepiece device characterized in that the time information is received and the time is set or corrected when the power is turned on, and thereafter the time is automatically corrected intermittently. 2. A time signal receiving means for receiving a transmission signal having time information, a time information extracting means for extracting the time information from the time signal receiving means, and the time information supplied from the time information extracting means. hand,
It comprises a clock means for measuring a predetermined time and a control means for controlling the time signal receiving means and the time information extracting means, wherein the control means uses the time information based on the detection signal of the detection means for detecting power-on. The time information from the extracting means is supplied to the clock means by the time setting means to set or correct the time information, and thereafter, the time signal receiving means and the time signal receiving means are provided only when the time is set to automatically adjust the time intermittently. A timepiece device characterized in that the time information extracting means is turned on. 3. The timepiece device according to claim 1, wherein the detection means for detecting the power-on detects a plug insertion state into a power outlet. 4. The detection means for detecting the power-on detects a power failure state.
The described timepiece device. 5. The timepiece device according to claim 1 or 2, wherein the detection means for detecting power-on detects a power-on state of a power switch. 6. The timepiece device according to claim 1, wherein the timepiece information is inserted in a vertical blanking period of a TV signal.