JPH09189783A - Clock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the amount of operation required for time setting through such control as a time data is read out from a memory means when power supply is resumed and a time is set again. SOLUTION: When a user set 13 a time, a system control section 12 stores a set time data in a memory section 14 and counts the time from the set time data. When a battery is removed to interrupt power supply from a main power supply 15 to each part,, the control section 12 sustains the backup and count operation of time data through a backup power supply section 16. When a lithium battery or the like is removed to interrupt power supply from the power supply 16, the control section 12 stops the count operation of time data. When power is fed again to the control section 12 from the power supplies 15, 16, the control section 12 reads cuts a time data being set previously from the memory section 14 and brings about a time set mode using that data. Consequently, the amount of operation required for a user to set a time can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece device incorporated in electronic equipment such as a video camera.

[0002]

2. Description of the Related Art Conventionally, a video camera having a time setting / display means and a backup power source such as a lithium battery for backing up a time data counting operation in addition to a main power source section such as a battery is a backup power source means. When the mode for setting the time again by stopping the supply of power from the device, the initial value of the time setting at that time was always the same as the value held by the system control unit.

However, in the above-mentioned conventional example, the following problems occur when the user sets the time again.

Taking a video camera as an example, when the power supply from the backup power supply means of the video camera is stopped, the clock device built in the video camera stops. Therefore, when the user tries to set the time again, the initial value that is always the same as the initial value of the system control unit of the video camera is set, so that the operation amount for setting the time increases.

The present invention has been made to solve the above-mentioned problems of the prior art, and an object of the present invention is to provide a timepiece device which requires a small amount of operation for setting time. .

[0006]

In order to achieve the above object, a timepiece device according to claim 1 of the present invention comprises a time setting / counting means for setting and counting time, and a count of the time setting / counting means. Backup power supply means for backing up the operation, storage means for electrically reading and writing the time data set by the time setting / counting means, and power supply after the power supply from the backup power supply means is stopped. And a control means for controlling the time data to be read from the storage means when the time is set again by the time setting / counting means after restarting.

In order to achieve the above object, a timepiece device according to a second aspect of the present invention backs up the time setting / counting means for setting and counting time and the counting operation of the time setting / counting means. Backup power supply means, storage means for electrically reading and writing the time data set by the time setting / counting means at regular intervals, and power supply restarts after the power supply from the backup power supply means is stopped. Control means for controlling the time data to be read from the storage means when the time is set again.

In order to achieve the above object, the timepiece device according to a third aspect of the present invention is the timepiece device according to the first aspect, characterized in that it is built in a video camera.

Further, in order to achieve the above object, a timepiece device according to a fourth aspect of the present invention is the timepiece device according to the second aspect, characterized in that it is built in a video camera.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) First, the first embodiment of the present invention
An embodiment will be described with reference to FIGS. FIG.
FIG. 3 is a block diagram showing a configuration of a video camera including the timepiece device according to the first embodiment of the present invention. In the figure, 1 is a lens group including a focus lens and a zoom lens for inputting a subject image, 2 is a CCD (image pickup element) for converting an optical image pickup signal input from the lens group 1 into an electric image pickup signal, and 3 is a CCD 2 A for electrical imaging signals
A camera signal processing unit 4 for performing processing such as E and converting the video signal into a video signal is an image to be combined with the video signal from the camera signal processing unit 3 and the display signal from the display signal generation circuit 6 and output to the viewfinder unit 5. A signal processing unit, 5 is a viewfinder unit for displaying a video signal, 6 is a display signal generating circuit for displaying the status of the video camera and time data as characters, 7 is a focus lens motor for driving the focus lens of the lens group 1, and 8 is A zoom lens motor for driving the zoom lens of the lens group 1, 9 is a focus lens motor driver for operating the focus lens motor 7, 10 is a zoom lens motor driver for operating the zoom lens motor 8, and 11 is an AF (autofocus) control unit. , 12
Is a system control unit that controls the entire system of the video camera, 13 is a time setting SW (switch) that is a means for the user of the video camera to set the time, and 14 is a memory that can be electrically written and erased. Department (memory), 1
Reference numeral 5 is a main power supply unit that supplies power to each part of the video camera from a battery or the like, and 16 is a backup power supply unit that is means for backing up data such as time data with a lithium battery or the like when power cannot be supplied from the battery or the like Is.

Next, the operation of the video camera having the above configuration will be described. When the user of the video camera operates the setting SW 13 to set the time, the system control unit 12 stores the set time data in the storage unit 14, and the system control unit 1
After that, 2 counts the time from the set time data. When the operator of the video camera removes the battery from the video camera and stops the power supply from the main power supply unit 15 to each unit, the system control unit 12 continues the time data backup and counting operation by the backup power supply unit 16. To do. When the lithium battery or the like is removed and the power supply from the backup power supply unit 16 is stopped, the system control unit 12 stops the time data counting operation. When power is supplied to the system control unit 12 from the backup power supply unit 16 or the main power supply unit 15 again, the system control unit 12 reads the previously set time data from the storage unit 14. When the user of the video camera operates the setting SW 13 to set the time setting mode, the system control unit 1
Reference numeral 2 sets the time setting mode by using the data read from the storage unit 14 as the initial data for setting the time.

FIG. 2 is a flow chart showing the operation control procedure of the timepiece device according to the present embodiment which is provided in the video camera having the above structure. First, in step S201, the system control unit 12 determines whether or not the time setting mode has started. Then, when the time setting mode is not started, the system control unit 12 determines whether or not the time mode setting is completed in step S202. Then, when the time mode setting is not completed, the system control unit 12 determines whether or not the time setting mode is in step S203.
If it is not in the time setting mode, step S20
In step 4, the system control unit 12 performs the time counting operation, and then returns to step S201.

On the other hand, when the time setting mode is started in step S201, the system control unit 12 reads the initial value for time setting from the storage unit 14 in step S205, and then returns to step S201. Also,
When the time mode setting is completed in step S202, the system control unit 12 writes the set time data in the storage unit 14 in step S206, and then returns to step S201. Furthermore, if the time setting mode is in effect in step S203, the process returns to step S201 without any processing.

As described above, according to the timepiece device of this embodiment, the time data is set and the main power supply unit 1
5 and after stopping the power supply from the backup power supply unit 16,
When the power supply is restarted, the time data is reset.
When the time data is set again, the time data is set from the previously set time, so that the user of the video camera can operate with a small amount of operation, and the number of times of writing to the storage unit 14 can be small. There is.

(Second Embodiment) Next, a second embodiment of the present invention will be described.
The embodiment will be described with reference to FIG. The configuration of the video camera equipped with the timepiece device according to the present embodiment is as follows.
Since it is the same as FIG. 1 of the first embodiment described above, the description will be given by diverting the same figure.

When the user of the video camera operates the setting SW 13 to set the time, the system control unit 12 stores the set time data in the storage unit 14, and the system control unit 12 thereafter sets the time. A time counting operation is performed from the time data, and the time data is written in the storage unit 14 at regular time intervals.

When the user of the video camera removes the battery from the video camera and stops the supply of power from the main power supply section 15 to each section, the system control section 12 uses the backup power supply section 16 to back up and count time data. continue. When the lithium battery or the like is removed and the power supply from the backup power supply unit 16 is stopped, the system control unit 12 stops the time data counting operation. When power is supplied to the system control unit 12 from the backup power supply unit 16 or the main power supply unit 15 again, the system control unit 12 stores the time data written at constant time intervals in the storage unit 14.
Read from. When the user of the video camera operates the setting SW 13 to set the time setting mode, the system control unit 12 uses the data read from the storage unit 14 as the initial data for setting the time and sets the time setting mode. .

FIG. 3 is a flowchart showing the operation control procedure of the timepiece device according to the present embodiment. First, in step S301, the system control unit 12 determines whether or not the time setting mode has started. If the time setting mode is not started, the system control unit 12 determines in step S302 whether the time mode setting is completed.
If the time mode setting is not completed, step S
In 303, the system control unit 12 determines whether or not the time setting mode is in progress. If the time setting mode is not in effect, the system control unit 12 performs a time counting operation in step S304, and then determines in step S305 whether or not a certain time has elapsed. Then, if the predetermined time has not elapsed, the process returns to step S301.

On the other hand, when the time setting mode is started in step S301, the system control unit 12 reads the initial value for time setting from the storage unit 14 in step S306, and then returns to step S301. Also,
When the time mode setting is completed in step S302 and when the time mode setting is completed in step S303, the process returns to step S301. Furthermore, if the predetermined time has elapsed in step S305, the system controller 1 proceeds to step S307.
2, after writing the current time data in the storage unit 14,
The process returns to step S301.

As described above, according to the timepiece device of this embodiment, time data is set and the main power supply unit 1
5 and after stopping the power supply from the backup power supply unit 16,
When the power supply is restarted, the time data is reset.
When the time data is set again, the time data is set from the time when the counting operation is performed, so that the user of the video camera has an effect that the operation amount for setting the time is small.

[0022]

As described in detail above, claim 1 of the present invention
According to the timepiece device described above, when the time data is set, the time data is written to the storage means, and after the power supply from the backup power supply means is stopped, the power supply is restarted to reset the time data. When the time data is set again, the time data is set from the previously set time, so that the amount of operation for setting the time is small and the number of times of writing the time data to the storage unit is small.

According to the timepiece device of the second aspect of the present invention, when the time data is set and the counting operation is performed,
The time data is written to the storage means at regular time intervals, and after the power supply from the main power supply means and the backup power supply means is stopped, the power supply is restarted, so that the time data is set again when the time data is reset. If
Since the time data is read from the storage means, there is an effect that the amount of operation for setting the time is small.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a configuration of a video camera including a timepiece device according to a first embodiment of the invention.

FIG. 2 is a flowchart showing an operation control procedure of the timepiece device.

FIG. 3 is a flowchart showing an operation control procedure of the timepiece device according to the second embodiment of the invention.

[Explanation of symbols]

 1 lens group 2 CCD 3 camera signal processing unit 4 image signal processing unit 5 viewfinder unit 6 display signal generation circuit 7 focus lens motor 8 zoom lens motor 9 focus lens motor driver 10 zoom lens motor driver 11 AF control unit 12 system control unit 13 Clock setting switch (SW) 14 Storage unit 15 Main power supply unit 16 Backup power supply unit

Claims (4)

[Claims] 1. A time setting / counting means for setting and counting time, a backup power supply means for backing up the counting operation of the time setting / counting means, and time data set by the time setting / counting means. And a storage means for electrically reading and writing, and a time data from the storage means when the power supply is restarted after the power supply from the backup power supply means is stopped and the time is set again by the time setting / counting means. And a control means for controlling to read the clock. 2. A time setting / counting means for setting and counting time, a backup power supply means for backing up the counting operation of the time setting / counting means, and time data set by the time setting / counting means. And a storage means for electrically reading and writing at a fixed time and a control for reading time data from the storage means when the power supply is restarted after the power supply from the backup power supply means is stopped and the time is set again. And a control means for controlling the time. 3. The timepiece device according to claim 1, wherein the timepiece device is incorporated in a video camera. 4. The timepiece device according to claim 2, wherein the timepiece device is incorporated in a video camera.