JPH02218993A - Time setting device - Google Patents

Abstract

PURPOSE:To enable calibration of a clock with the time of a hand-type clock picture A set beforehand by loading a clock picture B of a television broadcast by a loading means, by comparing it with the clock picture A set beforehand and by making the two pictures A and B accord with each other. CONSTITUTION:In an ordinary TV reception circuit, a picture signal from a circuit regeneration circuit 4 is subjected to A/D conversion 8 and then loaded in a control element (CPU) 9. Besides, a clock picture signal from a hand-type clock 12 is sent to the circuit 4. A TV broadcast of NHK being received, a preset switch 10 is turned ON at the timing of a prescribed time (12:00 o'clock) and a hand-type clock picture A at 12 o'clock is loaded the control element 9 and stored in VRAM 11. When the 12 o'clock comes, subsequently, a channel of a tuner 2 is set at the same NHK and a time picture B is loaded in the control element 9. When the pictures A and B accord with each other, the time of the clock 12 is calibrated to be 12 o'clock. By making this program incorporated in the control element 9, the clock 12 is calibrated to be 12 o'clock automatically every time when the control element 9 loads the picture of 12 o'clock of NHK.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for setting time using images broadcast on television.

[Conventional technology]

It has been proposed to incorporate a clock function into a television receiver and display the clock screen either independently or in a superimposed manner on the regular television screen.

In this television receiver, the time was manually set based on the time announced by a separate clock, telephone, etc. that is unrelated to the television receiver.

[Problem to be solved by the invention]

For this reason, setting the time is quite complicated, and once the time has been set, even if some error occurs, it is rarely calibrated.

An object of the present invention is to provide a time setting device in which the time is automatically calibrated.

[Means to solve the problem]

To this end, the present invention provides a means for capturing a clock screen of television broadcasting, a means for capturing a clock screen of a television broadcast, a clock screen captured from the capturing means and a preset clock screen, and when the two screens match, the time on the preset clock screen is set. It is now equipped with a means to calibrate the clock.

〔Example〕

Examples of the present invention will be described below. FIG. 1 is a diagram showing a schematic block diagram of a television receiver according to one embodiment. In this television receiver, the tuner 2 selects channels from the television broadcast waves received by the antenna 1.
The video signal is reproduced by the video intermediate frequency circuit 3 and the video playback circuit 4, and the broadcast screen of the channel is displayed on the CRT5.
is displayed. Furthermore, the audio of the same channel is processed by the audio reproduction circuit 6 and reproduced by the speaker 7.

In this embodiment, in such a normal television receiving circuit, the image signal from the image reproduction circuit 4 is converted into a digital signal by the A/D converter 8, and then inputted into the control section 9 consisting of a CPU, as will be described later. Process. 10 is a preset switch, and 11 is a V that stores image data for one frame.
RAM, 12 is a clock. The clock image signal from the clock 12 is sent to the image reproduction circuit 4.

FIG. 2 is a flowchart of the operation of the control section 9. In this embodiment, for example, when NHK broadcasting is received, the preset switch 10 is turned on at a predetermined specific time (for example, 12:00 minutes and 0 seconds when the long hand and short hand overlap).
The needle hole clock image A at that time is taken into the control section 9 and stored in the VRAM II.

Next, when the time of the image A arrives, the channel of the tuner 2 is set to -NHK, and the time image B is similarly taken into the control section 9. When both images A and B match, the time of the clock 12 is calibrated to 12:00:00 seconds.

By incorporating the program of the flowchart shown in FIG. 2 into the control unit 9, the clock 12 is automatically calibrated to that time every time the control unit 9 captures an image of 12:00, minutes, and seconds from NHK. It turns out.

Therefore, when the time content of this clock 12 is input to the image reproducing circuit 4 as a hands-on clock screen and displayed alone or in superimposed form on a television screen, the deviation of the time can be suppressed to an extremely small range. Can be done. Further, a highly accurate reference clock for the clock 12 is no longer required.

It should be noted that although the above description has been made regarding a television receiver, it goes without saying that the present invention can also be applied to a VTR having a program recording function and others.

Also, the time on the built-in clock 12 is, for example, 11:59 (
If there is a clock calibration mode switch on the operation panel that switches the channel to NHK when it is commercial time (for commercial broadcasts) and returns to the original channel after time calibration is completed, by operating the switch, the clock will change to NHK every time.
Time calibration is performed at hour θ minute 0 second.

〔Effect of the invention〕

As described above, according to the present invention, since the built-in clock is automatically calibrated, it is possible to accurately execute programs such as time display and program reservations set by time.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a television receiver according to an embodiment of the present invention, and FIG. 2 is a flowchart of time calibration. Agent Patent Attorney Tsuneaki Nagao

Claims (2)

[Claims] (1) A means for capturing the clock screen of a television broadcast, and comparing the clock screen captured from the capturing means with a preset clock screen, and if both screens match, the clock is set at the time on the preset clock screen. A time setting device characterized by comprising means for calibrating. (2) The time setting device according to claim 1, wherein the acquisition means and the calibration means are constituted by a CPU.