JPS596035Y2 - Television receiver remote control switch circuit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of a control switch circuit of a remote control device in equipment such as a television multiplex broadcast receiver or a video game circuit added to a television receiver.

Conventional remote control switches arrange the television receiver control switches and the television multiplex broadcast receiver control switches on one switch board, and supply power supply voltage directly to all the switches. Even when the television receiver is being controlled and selected, when the control switch of the television multiplex broadcast receiver is pressed, the command signal is sent out.

Therefore, in order to avoid confusion in such a case, it is necessary to provide a gate circuit on the receiving side of the control signal to prevent the control signal from flowing into the side that is not selected for control.

The aim of the present invention is to improve the above-mentioned drawbacks and to save the transmission line by sharing the control signal transmission line.

The present invention first selects whether to control a television receiver or a television multiplex broadcast receiver, receives the output of the control selection switch through a flip-flop circuit, and receives the television from the output of the flip-flop circuit. 1) Supply voltage for the control switch of the machine, and supply power for the control switch of the television multiplex broadcasting receiver from the other output, and do not apply power supply voltage to the control switch group on the side that does not have control selection. The method prevents confusion in the event of erroneous operation, and connects the outputs of each control switch of different groups as one set to one control signal transmission path, reducing the number of control signal transmission paths by half, On the receiving side, the information is decoded in combination with a signal that transmits the operating status of the flip-flop circuit, and
The system is designed so that only one control command is executed at the same time.

Embodiments of the present invention will be described below based on the drawings.

In the figure, both the television receiver control selection switch 2 and the television multiplex broadcast receiver control selection switch 3 are supplied with power from the terminal 1, and the outputs of these switches are connected to the first input terminal S of the flip-flop circuit 4. , second
The flip-flops are RS flip-flops.

In this circuit, when switch 2 is operated, the first output Q becomes logic 1, power supply voltage is applied to control switch group 5, and no voltage is applied to control switch group 6.

Also, when switch 3 is operated, the flip-flop is inverted and the second output terminal Q becomes logic 1, so control switch group 6
A power supply voltage is applied to the control switch group 5, and no voltage is applied to the control switch group 5.

Therefore, only the control switch group on the side selected for control becomes significant by operation and can generate a control signal, and even if the other switch group is erroneously operated, it becomes involuntary and does not generate a signal, so no confusion occurs.

To the control signal transmission line 7, the outputs of each control switch from the different groups mentioned above are connected in parallel, and signals are transmitted through one transmission line, and a separate information signal indicating which side the flip-flop circuit is operating on is transmitted. By adding one line, the control circuit 8 can determine whether it is a television receiver 9 or a television multiplex broadcast receiver 10, and convert the received signal from one control signal transmission line into a single control command. Since the signals are decoded and controlled, the number of control signal transmission line groups 7 can be halved.

In the drawings, the first and second output terminals Q and Q of the flip-flop circuit are depicted as direct control switch power supply buses, but the output terminals Q. It goes without saying that similar effects can be obtained when an amplifier or relay is provided after Q.

In addition, instead of connecting the control signal transmission line group 7 with wires, it is also possible to use an ultrasonic transmitter and receiver, and in this case, two
A signal is transmitted at a frequency representing two groups of identification and control signals.

Next, as an application of the above, similar remote control can be performed when a video game circuit or the like is connected instead of the television multiplex broadcast receiver.

As is clear from the above explanation, in the present invention, a flip-flop circuit receives a selection signal to select which of the two groups, a television receiver and a television multiplex broadcast receiver, is to be remotely controlled. Since the power supply voltage is supplied so that only the control signals of the two groups are significant, there will be no malfunction even if an incorrect operation is performed. It also has the effect of saving on the transmission path because it can be sent all at once on the transmission path.

[Brief explanation of drawings]

The figure is a circuit diagram of a remote control switch of a television receiver according to the present invention. 1...Power terminal, 2...Television receiver control selection switch, 3...Television multiplex broadcasting receiver control selection switch, 4...Flip-flop, 5...Television receiver remote control switch group, 6...Television multiplex broadcast receiver remote control switch group, 7...
・Control signal transmission line group, 8... Control circuit, 9...
...Television receiver, 10...Television multiplex broadcast receiver.

Claims (1)

[Claims for Utility Model Registration] A television receiver remote control that transmits a plurality of control command signals for controlling the volume, channel selection, etc. of the television receiver in accordance with the operation of a switch to which power supply voltage is applied. a group of switches, and a group of television multiplex broadcast receiver remote control switches that transmit a plurality of control command signals for controlling program selection, etc. of the television multiplex broadcast receiver in accordance with the operation of a switch to which a power supply voltage is applied. A remote control switch circuit for a television receiver comprising: a pair of switches, one of which is operated according to each selection, in order to select whether the television receiver is the television multiplex broadcast receiver; a selection switch; a flip-flop circuit that is set when one of the selection switches is operated and reset when the other is operated; and one of the remote control switches according to the set state of the flip-flop circuit. By applying the power supply voltage only to one of the remote control switch groups, only one of the remote control switch groups is controlled to be effective, and depending on the reset state of the flip-flop circuit, the power supply voltage is applied to only one of the remote control switch groups. A circuit arrangement is provided for controlling only the other group of remote control switches to become significant by applying a power supply voltage, and an output line in a set state or an output line in a reset state of the flip-flop circuit and the one and A remote control switch circuit for a television receiver, characterized in that a group of output lines obtained by connecting the other group of remote control switches in parallel is taken out as a control line for remote control.