JPS6031332Y2 - television receiver - Google Patents

Description

[Detailed explanation of the idea] This idea was developed as a video recording and reproducing machine (hereinafter referred to as rVTRJ).

) is a television receiver (hereinafter referred to as 1Tvyo).

) When connected to a television receiver, the television receiver receives a reproduced signal from a VTR and receives an image.

In this type of positioning, it is necessary to select whether to use the TV picture tube to receive the reproduced signal from the VTR or to receive the television signal.

Furthermore, when the reproduction signal from the VTR is being received at '■, it is necessary to correctly display this fact.

This idea is that when a VTR is in a playback state, if it is connected to a type of VT that outputs a discrimination signal indicating that it is in the playback state at the same time as the playback signal, the TV will automatically receive the TVR playback signal based on the above discrimination signal. and operates a playback display that indicates that the TV is in a state of receiving the playback signal, and a channel selection display that displays the station of the television signal that was being received before receiving the playback signal. When VTR playback ends and television signal playback automatically starts, the above-mentioned channel selection display continues to display the correct station, while the above-mentioned type that does not output the discrimination signal When connecting a VTR to '■,
A manual switch causes the VTR's playback signal to be received by '■, and the playback indicator is activated. At the same time, the operation of the channel selection indicator is stopped. When the VTR playback is finished, the playback indicator is activated. and the channel selection display both stop and indicate that the reproduction of the television signal will not start again unless the manual switch is operated, so that the reception state of the VTR and the reception state of the television signal are correct. The present invention provides a television receiving device that displays and displays images.

Hereinafter, this invention will be explained in detail using an embodiment of this invention shown in the drawings.

In the figure, reference numeral 1 denotes a VTR, which outputs a discrimination signal indicating that it is in a playback state at the same time as a playback signal, as will be described later.

2 is a video signal processing device, 3 is a coupling capacitor,
A switch 4 is turned on electrically or mechanically when a playback button (not shown) of the VTR 1 is turned on, and turned off when the playback button is turned off.

5 is a transistor, 6 to 10 are resistors, 11 is a power supply terminal that supplies a voltage of 12V, and 12 is an output terminal of the VTRI.

13 is a TV, and the output of the VTR 1 is inputted from an input terminal 14.

15-22 are resistors, 23.24 are capacitors, 25.2
6 is a transistor, 27 is a changeover switch, and 28 is a control device, which controls the position of changeover switch 27.

The resistors 16 to 19 and the transistor 25 constitute an instruction circuit 29, and as described later, the instruction circuit 29 includes:
Upon receiving the discrimination signal from the VTR1, an instruction signal instructing to receive the reproduction signal of the VTR1 is output, and upon receiving this instruction signal, the changeover switch 27 is operated via the control device 28 to switch the circuit of the TVi3. Then, the reception of the television signal is stopped, and the reproduction signal of the VTR 1 is started to be received.

30 is a video detection circuit that outputs a television video signal, 31 is a video processing circuit, and 32 is a cathode ray tube.

Reference numeral 33 is a channel selection indicator consisting of a lamp that displays the station of the television signal being received. Only one is shown here, but in reality, the number of lamps that match the number of channels required for TV 13 to be selected is set. ing.

34 is a bleeder resistor for the channel selection display 33.

35 is a playback indicator consisting of a lamp that indicates that the 'rv13 is in the receiving state of the playback signal of the VTR1, 36 is a resistor for the bleeder, and 37- is an operation switch for starting and stopping the playback indicator 35. , control device 28
Controlled by instruction signals from.

39 is a manual switch that forces the TV 13 to receive the reproduced signal from the VTR 1. When the manual switch 39 is on, the signal is connected to the resistor 1 from the power terminal 40 via the resistor 41.
5, the operation of the channel selection display 33 is stopped, and at the same time, the transistor 25 of the instruction circuit 29 is turned on.
An instruction signal is output from the control device 28, and the changeover switch 27 is activated.

Next, the operation of the above configuration will be explained.

First, when the playback button of the VTR 1 is turned on, the switch 4 is turned on, the transistor 5 is turned on, and the output terminal 12 is
A signal is generated in which the high level signal supplied from the power supply terminal 11 of the reproduction signal 12V is superimposed.

This high-level signal is used here as a discrimination signal indicating that the VTR 1 is in the reproduction state.

On the other hand, when the TV 13 receives an input superimposed with the above-mentioned high-level signal, which is a discrimination signal, the transistor 25 of the instruction circuit 29 turns on, and sends an instruction signal to the control device 22 instructing the control device 1 to receive the reproduced signal from the VTR 1.
8, this control device 28 operates and connects the AC contacts of the changeover switch 27, thereby cutting off the television video signal from the video detection circuit 30 and outputting it to the VTR.
A playback signal from 1 is applied to a cathode ray tube 32 via a video processing circuit 31.

Next, when the playback button of VT'R1 is off, the switch 4 is turned off and the transistor 5 is turned off.

Therefore, a signal in which a low-level signal is superimposed on the reproduced signal is generated at the output terminal 12, and is sent to the TV 13.

In the TV 13, the transistor 25 of the instruction circuit 29
is turned off, the control device 28 operates to automatically return the change-over switch 27, and connects the contact. As a result, the playback signal from the VTR 1 is cut off, and the TV video signal from the video detection circuit 30 is switched to the video signal. Processing circuit 3
1 and then added to the video recording/playback device 32.

The control device 28 also operates and stops the regeneration display at the same time as the changeover switch 27 is switched.

That is, when the playback button of the VTRl is turned on, the control device 28 is activated and the contact df of the operation switch 37 is turned on.
The playback indicator 35 is activated, that is, lights up.

Thereby, it is displayed that the TV 13 is in the state of receiving the reproduction signal of the VTR 1.

On the other hand, the channel selection display 33 that displays the station of the television signal being received is displayed not only when the 'rv 13 is receiving the television signal, but also when the 'rv 13 is receiving the reproduced signal of the VTR1. Activate, that is, turn on the light.

Therefore, when the VTR 1 finishes playing and reception of the previously received television signal automatically resumes,
The station you were previously receiving will now be displayed correctly.

On the other hand, use 'rv1' for a type of VTR that does not output a discrimination signal.
3, the 'rv13 cannot receive the reproduction signal of this VTR as it is.

This invention is equipped with a manual switch 39, and by turning on this manual switch 39, the channel selection display 3
Stop the operation of 3.

That is, at the same time as turning off the light, the instruction circuit 29 is activated to output an instruction signal, and the changeover switch 27 is activated via the control device 28, thereby causing the TV 13 to receive the reproduction signal of the VTR1.

In this case, by turning on the manual switch 39, the voltage applied to the channel selection display 33 becomes a low voltage obtained by dividing the voltage Vt of the power supply terminal 40 by the resistor 34 and the resistor 41.15. , the channel selection display 33 stops operating.

In the above embodiment, an independent switch is used as the manual switch 39, but a motion switch may also be used in which the channel switch that activates the manual switch turns off, or one of the channel switches can be manually activated. It may be used as the switch 39, and it can have the same function as the above embodiment.

As explained above, according to this invention, a TV can be connected to a VTR.
When connecting to automatically receive the VTR playback signal,
While this reception status is displayed correctly, when the VTR finishes playing and automatically resumes reception of the previously received television signal, the station is displayed correctly, which may cause users to misidentify the station. It never invites.

Also, since a manual switch is provided, you can manually switch the V
If you are receiving a TR playback signal, the previously received television signal station will not be automatically displayed even if VTR playback ends, so do not operate the manual switch again. You will receive a warning that you will not be able to receive a television signal for as long as possible.

Even if the TV user forgets that he or she operated the manual switch to receive the VTR playback signal, the TV user will not receive the TV signal when the VTR playback ends. The reason is easy to see,
You can immediately operate the manual switch correctly so that you can receive the television signal again.

[Brief explanation of the drawing]

The drawing is a circuit diagram showing an embodiment of this invention. 1...Video recording/reproducing machine (VTR), 13...
...television receiver (TV), 27...
Changeover switch, 28... Control device, 2
9...Instruction circuit, 30...Video detection circuit, 32...Cathode ray tube, 33...Tuning selection display, 35... Playback display, 37...
- Operation switch, 39...Manual switch.

Claims (1)

[Scope of utility model registration request] When a video recording/playback device is connected, a television receiving device capable of receiving a playback signal from the video recording/playback device and receiving the image receives a discrimination signal indicating that the video recording/playback device is in the playback state. an instruction circuit that receives the instruction signal from the video recording and reproducing device and outputs an instruction signal instructing to receive the reproduction signal of the video recording and reproducing device;
A changeover switch that switches the circuit of the television receiver to stop receiving the television signal and to receive the reproduction signal of the video recording and reproducing device, and a channel selection display that displays the station of the television signal that is being received. , a playback indicator that indicates that the television receiver is in a state of receiving the playback signal; an activation switch that operates the playback indicator upon receiving an instruction signal from the instruction circuit; and a channel selection indicator. A television receiver comprising a manual switch that stops the operation and at the same time activates the instruction circuit to output an instruction signal.