JPS6230765Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a program timer used in television receivers and the like.

Conventional television receivers incorporate or are combined with a program timer that automatically turns on the power and selects a channel so that a desired program is viewed at a predetermined time. However, with such a program timer, once the desired program is set, the television receiver will be driven even when the viewer is not watching the program, which wastes power. At the same time, this is not preferable from a safety standpoint. For this reason, it has been proposed that the power of the television receiver be automatically turned off after a certain period of time, for example, one hour after the television receiver is turned on. This makes handling of the device complicated, as it is necessary to turn on the power again.

This idea was made to solve the above-mentioned drawbacks, and if a controlled device controlled by a program timer is operated within a certain period of time after the power is turned on, the function that shuts off the power is stopped. , provides a program timer that allows continuous viewing.

This invention will be explained below with reference to a figure which is an example.

In the figure, 1 is an antenna, 2 is a tuner coupled to the antenna 1, 3 is a signal circuit that processes video signals and audio signals, 4 is a cathode ray tube that reproduces the video signal, and 5 is a deflection circuit for driving the cathode ray tube 4. , 6 is a control key for adjusting the channel or volume, etc. 7 is a switching circuit that controls the tuner 2 or signal circuit 3 based on the signal from the control key 6, and is usually configured with a microprocessor or the like. There is. Reference numeral 8 denotes a power supply circuit for supplying operating power to these circuits, and together with the above-mentioned circuits constitutes a television receiver which is a controlled device. 9 is a control circuit for turning on or cutting off power to the power supply circuit 8; 10 is a first timer for driving the control circuit 9; 11 is a setting device for setting the operating time and/or channel of the first timer 10; 12 is a second control circuit, which is driven by the output of the first timer 10 and generates an output after a predetermined period of time, for example, 10 minutes; The gate circuit 14 controls the supply of the output of the second timer 13 to the control circuit 9.

Under such a configuration, the first timer 10
The control circuit 9 is driven by the output of , which supplies power to the power supply circuit 8 and drives the second timer 13 . Then, the second timer 13 generates an output after 10 minutes, and if the control key 6 is not operated within this 10 minutes, the second timer 13
The output will be supplied to the control circuit 9 through the gate circuit 14, and the power supply to the power supply circuit 8 will be cut off. On the other hand, if you operate the control key 6 to switch channels or adjust the volume, sound quality, etc. within 10 minutes, the gate circuit 14
prevents the second timer 13 from supplying the output, and the control circuit 9 continues its operating state.
In other words, with a television receiver, even if you set the desired volume, channel, etc. in advance, the volume may be adjusted depending on the surrounding noise condition.
Otherwise, operations such as switching to another channel are often performed. Therefore, if the television receiver is configured to continue or stop operation depending on whether or not this operation is performed, it will be possible to control whether the viewer is present or not. The television receiver can be controlled accordingly, reducing unnecessary power consumption and operational complexity.

In addition, in the above-mentioned embodiment, the control circuit 9,
Although the first and second timers 10 and 13 are constructed separately, they can be constructed using substantially the same timer using a microprocessor or the like. Further, this invention can be applied not only to television receivers but also to stereo equipment having a radio receiver.

As explained above, according to this invention, it is possible to obtain a program timer that suppresses unnecessary power consumption and is easy to use, and the practical value of this invention is great.

[Brief explanation of drawings]

The figure is a block diagram showing one embodiment of this invention. In the figure, 2 is a tuner, 3 is a signal circuit, 4 is a cathode ray tube, 6 is a control key, 7 is a switching circuit, 8 is a power supply circuit, 9 is a control circuit, 10 is a first timer, 11 is a setting device, and 12 is a In the second control circuit, 13 is a second timer, and 14 is a gate circuit.

Claims (1)

[Scope of utility model registration request] a control circuit that supplies or cuts off power to a power supply circuit of a controlled device controlled by a program timer; and a first control circuit that generates an output at a desired set time to drive the control circuit and supply the power supply circuit. a second timer that is driven by the output of the first timer and generates an output after a predetermined period of time; and a second timer that detects whether or not a control key of the controlled device is operated within the period of time. , supplying the output of the second timer to the control circuit when the control key is not operated, and blocking supply of the output of the second timer to the control circuit when the control key is operated. The control circuit includes a gate circuit, and the control circuit stops power supply to the power supply circuit when the output of the second timer is supplied, and
A program timer characterized in that when the output of the timer is not supplied, power supply to the power supply circuit is continued.