JPH06103938B2 - Television receiver - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a television receiver having a so-called off-timer function of stopping reception of a video signal and an audio signal at a set time.

[Conventional technology]

The off-timer function in a television receiver is extremely useful, for example, for energy-saving purposes and for viewing-prohibiting purposes such as putting a young child to sleep early.

In general, the off timer often has a configuration in which a relay operates to turn off the television receiver power supply circuit at a set time.

[Problems to be Solved by the Invention]

The off-timer function described above is effectively used for those who understand the significance of being unable to view. However, in the case of a child who does not understand the significance, after the operation of the off-timer, the main body part or the remote switch may be operated in an attempt to manage viewing.

In such a case, since the conventional television receiver can easily turn on the power supply circuit only by pushing the push button switch or the remote switch of the main body, the off timer function is substantially meaningless. It was a thing.

The present invention has been made to solve the above problems, and an object of the present invention is to obtain a television receiver that can effectively use the off-timer function to prohibit viewing within a range that does not interfere with daily viewing. To do.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the television receiver according to the present invention stops reception of a video signal and an audio signal at a first set time, and a second time delayed by a predetermined time from the first set time. The video signal and audio signal can be received when the power-on command and a specific security code (password) are input until the set time is reached, and after the second set time is reached, the power is turned on. It is possible to receive a video signal and an audio signal only with a closing command.

Also, between the first set time and the second set time,
When a power-on command is input, a guidance display prompting the input of a personal identification number is displayed.

[Action]

In the present invention, when the first set time comes, the reception of the video signal and the audio signal is stopped similarly to the conventional off-timer, but from this time until the second set time is reached, the image is displayed without a specific personal identification number. Since the reception of the signal and the audio signal is disabled, the off-timer function can be effectively used to prohibit viewing. Further, since the video signal and the audio signal can be received after the personal identification number is input or the second set time has passed, daily viewing is not disturbed.

Further, when the power-on operation is performed after the operation of the off-timer, if the guidance display indicating that the personal identification number is required is displayed, it is possible to recognize that the user cannot watch without the personal identification number, and the device is not defective. You don't have to suspect your heels.

〔Example〕

FIG. 1 is a block diagram showing the configuration of an embodiment of a television receiver of the present invention. In the figure, AC is used as the commercial power source.
By connecting the plug 1, the AC voltage is changed to the power supply circuit 2.
Is supplied to. The power supply circuit 2 rectifies and smoothes the AC voltage, and supplies the obtained DC voltage to the internal circuit 4 and the control unit 10 via the relay unit 3. The internal circuit 4 is an original circuit portion of a television receiver that receives and processes a video signal and an audio signal and outputs them to a CRT display drive circuit 5 and a speaker (not shown). CRT display drive circuit 5
Drives the CRT 6 according to the signal from the internal circuit 4 based on the control signal of the control unit 10. On the other hand, the control unit 10 inputs a signal from the remote switch 7 having a large number of keys including a numeric keypad, processes the signal, and controls the relay unit 3 and the CRT display drive circuit 5 according to the processing result.

Here, the control unit 10 inputs a signal from the remote switch 7 and generates a signal corresponding to each key.
And a timer means 12 for receiving the off time data from the key input means 11 and setting the time, and the timer means 12
The release time data from the key input means 11 and the power supply control means 13 that gives a non-excitation command to the relay section 3 according to the time signal when the set time of 1 comes In response to this, the timer means 14 for setting the time, the key input discriminating means 15 for checking the power-on command and the personal identification number data from the key input means 11, the gate closing signal of the timer means 14, and the key input discriminating means 15 Gate means 16 for giving or blocking a power-on command to the power supply control means 13 by a gate open signal
And a display data storage means 17 for storing display data for prompting the input of the personal identification number, and a display control means 18 for giving a display control signal to the CRT display drive circuit 5 in accordance with the display signal of the key input determination means 15. There is.

The operation of this embodiment configured as described above will be described below.

First, when the off time data A is output from the key input means 11 by the key operation of the remote switch 7, the time is set in the timer means 12, and when the release time data is output from the key input means 11, the The time is set in the timer means 14. In this case, the release time may be delayed by a certain time with respect to the off time, or may be set arbitrarily.

Now, assuming that the power-on command F is output from the key input means 11 by the key operation of the remote switch 7 before the set time of the timer means 12, this command is input to the power supply control means 13 through the gate means 16. It In response to this, the power supply control means 13 gives an excitation command H to the relay section 3. Also,
In response to the power-on command F, the key input discrimination means 15 gives the main display signal M to the display control means 18. The display control means 18 is a CRT
The image display control signal N is output to the display drive circuit 5.
As a result, the video signal and the audio signal are received, and the television can be viewed.

Next, when the set time of the timer means 12 arrives and the time limit signal B is output, the power supply control means 13 gives the non-excitation command C to the relay section 3. As a result, the power supply to the internal circuit 4 is turned off, and the reception processing of the video signal and the audio signal is stopped. Further, when the timer means 12 outputs the time limit signal B, the timer means 14 generates the gate closing signal E to the gate means 16 so that the power-on command F is not transmitted to the power supply control means 13. Since the timer means 14 stops outputting the gate closing signal E at the set time, the power-on command F from the key input means 11 remains unchanged.
Added to 13.

Next, while the timer means 14 is generating the gate closing signal E, if the key input means 11 outputs the power-on command F by the key operation of the remote switch 7, the key input determination means 15 sends this. The gate opening signal G for opening the gate is given to the gate means 16 in preference to the above-mentioned gate closing signal E, and the semi-display signal J is added to the display control means 18. At this time, the gate means 16 is opened, the power supply control means 13 gives an excitation command H to the relay section 3, and the display control means 18 displays a monochrome raster, for example, one of red, green and blue on the CRT display screen. At the same time, the guidance display control signal K for displaying the data P in the display data storage means 17 is output. As a result, the guidance display for entering the personal identification number is displayed on the CRT6.

Next, when the personal identification number is input by the remote switch 7 according to the guidance display of the CRT 6, the key input means 11 outputs the personal identification number data L corresponding thereto. Therefore,
The key input discriminating means 15 determines whether or not the personal identification number data L coincides with the one registered in advance. Only when the personal identification number data L coincides, the display control means 18 is provided with the main display signal M.
Then, since the display control means 18 gives the image display control signal N to the CRT display drive circuit 5, normal reception of the video signal and the audio signal becomes possible.

On the other hand, since the output of the gate closing signal E is canceled after the set time of the timer means 14 is reached, the video signal and the audio signal are output without inputting the personal identification number and only by the power-on command by the key operation of the remote switch 7. It becomes possible to receive signals.

FIG. 2 is a block diagram showing a specific structure of the above-mentioned television receiver, in which the control unit 10 is composed of a microcomputer. As is well known, this microcomputer has a CPU, a ROM for writing the control procedure and fixed data necessary for the CPU and arithmetic processing in advance, and supplying the CPU to the CPU as necessary, a working area or input / output for the arithmetic processing of the CPU. The RAM includes a RAM used as a buffer, a clock counting unit that counts clocks, and the like, and achieves each of the above functions by a program.

Incidentally, the CPU control procedure is shown in FIG.
In this case, first, it is determined whether or not the power-off time, which is the first set time, has arrived (step 101). Then, if the off time has come, the power supply circuit is turned off (step 102), and if not, the process ends.

Next, it is determined whether or not the power-off cancellation time, which is the second set time, has come after the power-off operation has been performed (step 103). The power-off cancellation time can be, for example, one hour after the power-off time. Then, if the power off release time has come, the processing is terminated. Conversely, if the power off release time has not come, if any key input is made, it is determined whether the power key is on or off. If it is determined that the key is not the power key, the process returns to step 102. If the key is the power key, the power circuit is turned on (step 105). Then, a monochrome raster, for example, red, green, or blue is displayed on the display screen (step 106), and a message prompting the user to input a personal identification number is displayed (step 107).

Next, the entered personal identification number is collated with the one registered in advance (step 108), and when both are in agreement, a normal image is displayed (step 109).
Returning to the processing of step 102, the power supply circuit is turned off.

Thus, the functions shown in the blocks of FIG. 1 can be achieved by the processing shown in FIG.

In addition, although the case where the remote switch 7 is used has been described in the above embodiment, the present invention is not limited to this, and this switch is attached to the main body portion as long as it inputs a key operation signal. Even if
The same operation as described above can be performed.

〔The invention's effect〕

As is apparent from the above description, according to the television receiver of the present invention, the reception of the video signal and the audio signal is stopped at the first set time, and the reception is continued from this time until the second set time is reached. The video signal and audio signal cannot be received without the personal identification number, and the video signal and audio signal can be received as usual if the second set time has passed. There is an effect that the off-timer function can be effectively used for prohibiting viewing within a range where there is no problem.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of one embodiment of a television receiver of the present invention, FIG. 2 is a block diagram showing a concrete configuration of the same embodiment, and FIG. 3 is a micro-computer used in the same embodiment. It is a flowchart which shows the processing procedure of a computer. 2 ... Power supply circuit, 3 ... Relay section, 4 ... Internal circuit, 5
...... CRT display drive circuit, 6 ...... CRT, 7 ...... remote switch, 10 ...... control section, 11 ...... key input means, 12, 14
...... Timer means, 13 ...... Power supply control means, 15 ...... Key input discrimination means, 16 ...... Gate means, 17 ...... Display data storage means, 18 ...... Display control means

Claims (2)

[Claims] 1. A key operation signal is input, the signal is processed, and a power supply circuit and a display drive circuit are controlled in accordance with the processing result so that a video signal and an audio signal are received at a first set time. In a television receiver including a control unit that is stopped, power is turned on by operating the key until the control unit reaches a second set time delayed by a predetermined time from the first set time. A means for detecting that a command and a specific personal identification number have been input is provided, and the video signal and the audio signal can be received on the condition that both are input, and at the second set time. After reaching, a television receiver characterized in that it is possible to receive a video signal and an audio signal only by a power-on command by operating the key. 2. The controller controls the second set time from the first set time.
When the power-on command is input before the set time of,
2. The television receiver according to claim 1, further comprising means for displaying a guidance for prompting input of a personal identification number on the display means.