JPH0798970A - Power source control system - Google Patents

Abstract

PURPOSE:To simplfy the use of a VTR incorporated type TV device when the state tha a tuner for video recording a VTR is in an unused state, the source of the VTR is turned on and a mechanism is stopped is continued for a prescribed time by turning off the source. CONSTITUTION:When a main power source switch SW1 is turned off from on, and a TV source switch SW2 is also turned off from on, whether the device is in a video recording state or in a video recording pause state is judged, and according the decision, a timer is made a stand-by state or the VTR source is made an interruption state. When the switch SW1 is turned off from on, when no SW2 is turned off from on, whether or not power source is supplied to the tuner is judged, and when in the operation state, a one minute timer circuit is intialized. Then, when no power source is supplied to the tuner, whether or not the VTR source is turned on is decided, and when the source is stopped is judged, whether or not a cassette is ejected is judged, and then ejected beforehand, the VTR source is turned off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a VTR integrated TV.

[0002]

2. Description of the Related Art When a television receiver (hereinafter referred to as "TV") and a video tape recorder (hereinafter referred to as "VTR") are simply connected and combined, each power button is present.

In addition, as a VTR unit, a timer standby button (SW for setting the VTR to a timer reservation executable state (standby state)) is used in addition to the power button in order to control whether or not the timer reservation can be executed. , V
It is common to control the TR system.

By the way, a model in which a TV and a VTR are housed in one cabinet (a so-called VTR integrated type T
In V), there is no button to turn on / off only the power of the VTR because it is meaningless to the user, and the main power switch of the TV (push lock switch: hereinafter referred to as main power switch), the TV In general, a VTR integrated TV system is controlled by a power button (a switch for turning on / off a TV screen: hereinafter referred to as "TV power button") and a timer standby button.

That is, when power is supplied to the TV circuit by turning on the main power switch, the TV screen can be turned on / off by the TV power button in this state, while the VTR is turned on.
With respect to the part, the power of the VTR part is linked with the power of the TV circuit, or the power is automatically turned on when an operation command such as reproduction or fast forward is issued.

Further, as a prior art, a VTR alone has a function such that when the power is turned off, it operates to determine whether or not there is a reservation or tape and automatically shift to a timer standby state. There is a thing to delete. It is conceivable to apply such a technique to the above-mentioned VTR integrated TV model, delete both the timer standby button and the power button of the VTR, and control this integrated model with only the TV power button.

[0007]

However, in such a case, since there is no one for controlling the power source of the VTR, various problems occur, and therefore, the following solutions can be considered.

One of them is a method of turning on / off the power supply of the VTR as well as turning on / off the power supply of the TV.
In this case, the power of the VTR cannot be controlled independently by simply using the TV power button. Therefore, it is conceivable that the power of the VTR is turned on / off together with the power of the TV. However, in this case, even when the user only watches the TV and does not need the VTR, the power of the VTR is turned on, resulting in a waste of power consumption. Further, even if the tape is rewound when the TV power is off, it cannot be used without turning on the TV once, and the usability becomes poor. Another method is to combine the power supply of the VTR with the operation of the mechanism.

That is, as is the case with the conventional VTR, when the power of the VTR is off, some VT
If the R operation key (PLAY, FF, etc.) is pressed, the VTR
It is conceivable to use the method of turning on the power supply of and directly shifting to each operation mode.

However, in this method, when the TV is turned off and the tape is inserted, only rewinding or fast-forwarding is performed, and the tape is left alone, the VTR is temporarily turned on. If the VTR is kept in that state while rising, there is a disadvantage that there is no timing to turn off the power of the VTR.

Therefore, in the above case, it is conceivable to take measures to turn off the power of the VTR when the mechanism operation is stopped.

However, when this method is used, when the user uses the tape for a little while to advance it, that is, when the user continues to perform a series of operations such as fast-forwarding, stopping, and reproducing. At this time, every time the mechanism stops, the power of the VTR system is cut off, and the tape winds around the cylinder or moves away from the cylinder, resulting in poor response of the mechanism and unnatural movement during mechanism operation transition. Will occur.

Therefore, the present invention does not cause such an inconvenience, and does not use the timer standby button and the power button of the VTR in the VTR-integrated TV model. The purpose is to be able to control the power supply.

[0014]

SUMMARY OF THE INVENTION According to the present invention, in a television receiver having a video tape recorder built therein, a first judgment for judging whether or not a power supply of a recording tuner of the video tape recorder is operating. Means and second judging means for judging whether or not the power source of the video tape recorder is operating when the power source of the tuner of the video tape recorder is not operating by the first determining means; The third judging means judges whether the mechanism is stopped when the second judging means judges that the power source of the video tape recorder is operating, and the mechanism is stopped by the third judging means. When it is determined that the predetermined time has elapsed, a fourth determination means determines whether the predetermined time has passed, and the fourth determination means determines that the predetermined time has passed. A power supply control system comprising a fifth determination means for the video tape recorder section to the timer standby mode or VTR power off.

[0015]

According to the above construction, if the tuner for VTR recording is not used, the power of the VTR is on and the mechanism is stopped for a predetermined time, a condition for turning off the power of the VTR part is created. be able to.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

The present invention is basically when the power of the VTR is on and the tuner controlled by the VTR (tuner for VTR recording) is not used and the mechanism is stopped ( A method of monitoring the stop mode or the standby mode) with a microcomputer and automatically turning off the power of the VTR when the state continues for a certain time (1 minute in one embodiment of the present invention described below) I am trying to use it.

In FIG. 1, the power source obtained at the terminal PW connected to the commercial AC power source is constantly supplied to the microcomputer (microcomputer) power source circuit 3, from which the microcomputer power source voltage is supplied to the TV microcomputer 6 and the VTR microcomputer 7. ing. The TV microcomputer 6 controls the TV circuit 8 including the tuner / channel selection circuit and the switch circuit SW1. V
The TR microcomputer 7 controls the VTR circuit 9 including the tuner / channel selection circuit, the switch circuit SW2, and the mechanism 11. SW1 is a main power supply switch, and when it is closed, power is supplied to the TV power supply circuit 1 and the VTR power supply circuit 2.

Reference numeral 4 denotes a remote control transmitter including a TV power button SW2, a play button P, a record button R, etc.
The signal transmitted by the transmitter 4 is received by the remote control receiver 5, and the received signal is supplied to the TV microcomputer 6 and the VTR microcomputer 7. The microcomputers 6 and 7 receive this and the TV
The circuit, the VTR circuit, etc. are controlled. Incidentally, 10 is a CRT for displaying a TV screen.

Next, the operation of the circuit of this embodiment will be described with reference to the operation flowchart of FIG. 2. When the main power switch SW1 is turned on and off in step S1 and the TV power switch is turned on and off in step S2, Step 1
It is judged in 2 whether it is the recording state or the recording pause state, and if it is the recording state or the recording pause state, that state is continued,
If not, as will be described later, it is determined in step S9 whether or not there is a timer reservation and whether or not the nail-folding tape is inserted, and according to the determination, the timer standby state is set (step S11). ), The VTR power supply is cut off (step S13).

Unless the main power switch SW1 is switched from ON to OFF in step S1 and the TV power switch is switched from ON to OFF in step S2, it is determined in step S3 whether power is supplied to the VTR recording tuner. ,
If the tuner is in operation, the one-minute timer circuit is initialized in step 14. If power is not supplied to the VTR recording tuner in step S13, V is recorded in step S4.
It is determined whether the power of the TR is turned on. If the power is not turned on, the timer is initialized for 1 minute in step S14. If the power is turned on, it is determined in step S5 whether the mechanism is stopped. It When it is determined in step S5 that the mechanism is operating, 1 is set in step S14.
If the minute timer circuit is initialized and it is determined that the cassette is stopped, then it is determined in step S6 whether or not the cassette is ejected. If the cassette is ejected, the power of the VTR is turned off (step S13). This eliminates the need to turn on the power unnecessarily.

If it is determined in step S6 that the cassette has not been ejected, the operation for decrementing the 1-minute timer is started in step S7, and if it is determined that 1 minute has elapsed in step S8, the process proceeds to step S9. If not, continue decrementing. If it is determined in step S8 that one minute has elapsed, it is determined in step S9 whether or not the timer is reserved, and if not reserved, the power of the VTR is turned off (step S13). If it is determined in step S9 that the timer is reserved, the next step S1
At 0, it is judged whether or not a nail break tape (recorded tape) is contained. If it is judged that the nail break tape is contained, the power of the VTR is turned off (step S13), and the nail break tape is inserted. If it is determined that it is not, the VTR enters the timer standby state (step S11).

By using such a method, the operation of the same mechanism as that of a normal VTR can be realized even when the fast-forwarding, stopping, and reproducing operations are continuously performed as described above, and the VTR can be realized. When is turned off, the timer standby button can also be deleted by determining whether or not there is a reservation or a tape nail and automatically determining whether or not the timer standby state can be entered.
It is possible to delete all the buttons that individually control the power supply of the TR.

Further, the above-mentioned steps S1, S2, S
Even when the TV power supply or the main power supply is turned off as in the process of 12, the power of the VTR is turned off except during the recording (when the TV power supply or the main power supply is turned on, V
The power of the TR remains off), and when the power of the VTR is unnecessary, the power is immediately turned off, so that more effective operation can be performed.

As described above, the VTR integrated TV system can be controlled only by the TV power switch.

[0026]

According to the present invention, in a VTR-integrated TV system, it is not necessary to provide a power control button for the VTR portion, and the user does not have to worry about the power state of the VTR, and the VTR-integrated type can be more easily installed. A TV device can be used.

[Brief description of drawings]

FIG. 1 is a schematic block diagram of a video tape recorder-integrated television receiver embodying the present invention.

FIG. 2 is a diagram showing a flowchart for explaining the operation of the circuit of FIG.

[Explanation of symbols]

 1 TV power supply circuit 2 VTR power supply circuit 3 Microcomputer power supply 4 Remote control power supply 5 Remote control receiver 6 TV microcomputer 7 VTR microcomputer 8 TV circuit 9 VTR circuit 11 VTR mechanism SW1 Main power switch SW2 TV power switch

Claims (2)

[Claims] 1. A television receiver having a video tape recorder built therein, comprising: first judging means for judging whether or not a power source of a tuner of the video tape recorder is operating; and a video tape by the first judging means. Second determining means for determining whether or not the power source of the video tape recorder is operating when it is determined that the power source of the tuner used for recording the recorder is not operating; and the second determining means. Third judging means for judging whether or not the mechanism is stopped when it is judged that the power source of the video tape recorder is operating, and the third judging means judges that the mechanism is stopped. Fourth judging means for judging whether or not a predetermined time has elapsed, and when the fourth judging means judges that the predetermined time has elapsed, the bidet The fifth to the tape recorder portion timer standby mode or VTR power off
A power supply control system comprising a judgment means. 2. The reservation judging means for judging whether or not a timer reservation is made when the fourth judging means judges that the predetermined time has elapsed, and the nail breakage tape cassette according to claim 1. Cassette judgment means for judging whether or not the VTR portion is inserted, and if the timer is not reserved or the nail break tape cassette is inserted, the process proceeds to the step of turning off the power of the VTR portion. Power control system.