JPS58182970A - Display for remaining time of timer of television receiver - Google Patents

Abstract

PURPOSE:To prevent a screen from disappearing in the middle of watching by displaying the remaining time of a timer on the screen in spots and confirming the remaining time of the timer periodically at need during the watching. CONSTITUTION:A timer circuit 1 once supplied with a call command for the remaining time of a timer from an input means sends a gate pulse to a gate circuit 9 at specific intervals of time of the circuit 1. At this time, display information from a shift register 7 is led out through the circuit 9 at every time and supplied to a CRT driving circuit 11 temporarily through a signal switching circuit 10 as a substitute for a video signal. Consquently, a number showing the remaining timer time is displayed at a corner of TV video on the screen of a CRT12 for, for example, five seconds. Then, when ''0'' is displayed on the screen, a power-off signal is sent out of the circuit 1 to turn off a power on-off circuit 3, stopping applying a voltage +B to the CRT.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a television receiver equipped with a so-called off timer that can set a timer for turning off the power, and in particular displays the timer remaining time on the screen of a picture tube (CRT). The present invention relates to a timer remaining amount time display device that can display the time remaining on a timer.

Conventionally, in television receivers equipped with this type of off-timer, the remaining time of the timer is displayed on the picture tube screen for a certain period of time only when the timer is set.
Therefore, even if a timer was set for the power off time on such a receiver, the subsequent viewing was no different from normal viewing without the timer set, and it was unclear how much time was left on the timer. . In extreme cases, even though I had set a timer, I didn't notice it and the screen disappeared mid-way, which I was confused about because I thought it was a problem with the receiver.

The present invention has been made in view of these points, and it is possible to display the timer remaining time in spots on the screen every time a certain period of time elapses when setting the timer in a television receiver equipped with an off timer. The purpose of this invention is to provide a timer remaining amount time display device that is capable of displaying time remaining on a timer.

The present invention will be described below according to embodiments shown in the drawings. 1st
The figure shows a block diagram of one embodiment of the invention, where 1
is a timer circuit with a down counter;
Then, preset timer information is counted down every moment based on the clock pulse from the clock pulse oscillator 2.

While timer information exists in this timer circuit 1, a power-on signal is derived from this timer circuit 1,
Based on this, the power on/off circuit 3 is always turned on and operated, and at this time, a 10B voltage obtained by rectifying and smoothing the commercial power is derived, and each circuit in the receiver is driven by this. 4 is ROM (read only memory)
Digital display information for displaying the timer remaining time on the CRT screen is stored in advance in each address in this memory 4, and based on the timer information of the timer circuit 1, this memory 4 is accessed, and in synchronization with the vertical positioning signal designated by the vertical counter 5, display information corresponding to the remaining amount of time at that time is sequentially read out repeatedly from the memory 4. The display information thus read out is sequentially output from the decoder 6 as serial display information in synchronization with the horizontal positioning signal obtained from the horizontal counter 8, and is supplied to the gate circuit 9.

Now, the above-mentioned timer circuit 1 is controlled by some input means such as a remote control or a manual switch as shown in FIG.
When a calling command for the timer remaining time as shown in a) is given, and thereafter, every time the timer information, that is, the remaining time of the timer circuit 1 reaches a predetermined time (minute), the timer information shown in FIG. 2(b) is given.
A 5 second gate pulse is derived and applied to the gate circuit 9 as shown in FIG. Therefore, the gate circuit 9 is opened only during this time, and the display information obtained from the shift register 7 at this time is derived via the gate circuit 9 each time.
This is temporarily supplied to the CRT drive circuit 11 via the signal switching circuit 10 in place of the video signal. As a result, on the picture tube (CRT)] 2 screen, a number "70" representing the current timer remaining time (for example, 70 minutes) is displayed at the corner of the television image for a predetermined time (60 minutes, 4
5 minutes, 30 minutes.

15 minutes, 0 minutes) is displayed on the screen for only 5 seconds. In other words, when the remaining time reaches 60 minutes, "60" is displayed first, and then 45 is displayed for 5 seconds every 15 minutes.
",""30","15" (minutes) are displayed, and finally, when the remaining time on the timer runs out, "0" is displayed for only 5 seconds.In this way, when "0" is displayed on the screen for 5 seconds. At that moment, a power off signal is derived from the timer circuit 1, and the power on/off circuit 3 is turned off, as shown in FIG. 2(C).
As shown in FIG. 3, the generation of the 10B voltage of the receiver is then stopped.

In the above embodiment, every 15 minutes on the picture tube screen, 5
Although the remaining amount time is displayed in seconds, these unit times can be arbitrarily set in the timer circuit l.

According to the present invention, in a television receiver equipped with an off timer as described above, it is possible not only to check the remaining amount of time on the timer each time, but also to check the remaining amount of time periodically during viewing. This is extremely convenient for viewers, as it eliminates the confusion caused by the screen disappearing mid-way as in the past.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a signal waveform diagram in the embodiment, and FIG. 3 is an explanatory diagram of the operation of the embodiment.

Claims (1)

[Claims] 1. A television receiver equipped with an off timer that can set the power off time, and the timer information set in the timer circuit changes to the remaining time of the timer stored in the memory in advance every time a predetermined time elapses. 1. A timer remaining time display device for a television receiver, characterized in that the remaining time of a timer is displayed on the picture tube screen by supplying corresponding display information to the picture tube.