JPH0447516B2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a television receiver equipped with a so-called off timer function in which a timer can be set to turn off the power. This invention relates to a quantity and time display device.

[Conventional technology]

Conventionally, in television receivers equipped with this type of off-timer function, 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.

[Problem to be solved by the invention]

Therefore, in such a receiver, even if a timer is set for the power off time, the subsequent viewing is no different from normal listening without a timer setting, and it is difficult to know how much time is left on the timer. Ta. In extreme cases, even though I had set the timer, I didn't notice it and when the screen disappeared midway through, I was confused because I thought it was a problem with the receiver.

[Means to solve the problem]

Therefore, in order to solve the above-mentioned problems, the present invention provides a television receiver equipped with an off-timer function that can set a timer for turning off the power, and counts down preset timer setting time information based on clock pulses. timer circuit means for obtaining timer remaining time information and outputting a power-on signal while the timer remaining time exists; and a digital signal corresponding to the timer remaining time obtained by counting down in the timer circuit means. display information generating means for generating time display information; and when the timer remaining time information reaches a predetermined timer remaining time, digital time display information obtained from the display information generating means is transmitted to the predetermined timer remaining time. and display information supply means for supplying display information to the picture tube for a sufficiently short period of time compared to the above.

[Effect]

According to a television receiver equipped with such an off-timer function, each time the timer remaining time reaches a predetermined time after the timer is set, the timer remaining time is displayed on the picture tube screen in spots for a very short period of time. Since the digital time is displayed, you can easily check how much time is left.

【Example】

Hereinafter, the present invention will be explained in detail according to embodiments shown in the drawings. FIG. 1 shows a block diagram of one embodiment of the present invention, in which numeral 1 is a timer circuit having a down counter, in which timer setting time information set in advance is periodically clocked based on clock pulses from a clock pulse oscillator 2. Counting down moment by moment. While the timer circuit 1 has a timer remaining time, that is, when the timer remaining time has some time other than 0, a power-on signal is derived from the timer circuit 1, and based on this, a power-on signal is derived from the timer circuit 1. The power on/off circuit 3 is always on and operated, and at this time, the +B voltage obtained by rectifying and smoothing the commercial power is derived, and each circuit in the receiver is driven by this. Further, 4 is a memory such as a ROM (read only memory), and in this memory 4, digital display information (time display information) for displaying the remaining time of the timer on the CRT screen is stored in advance at each address. A predetermined address of the memory 4 is accessed based on the timer remaining time information that changes from time to time due to timeout in the timer circuit 1, and at this time, it is synchronized with the vertical positioning signal specified by the vertical counter 5. and the above memory 4
From then on, time display information corresponding to the remaining amount time at that time is repeatedly read out. The time display information thus read out is sequentially converted into serial time display information by the decoder 6 and then sent to the shift register 7. At this time, serial display information is sequentially output from the shift register 7 in synchronization with the horizontal positioning signal obtained from the horizontal counter 8, and is supplied to the gate circuit 9. Now, when the timer circuit 1 is given a command to call up the remaining time of the timer as shown in FIG. Every time the remaining amount reaches a predetermined time, a gate pulse of 5 seconds is derived as shown in FIG. 2b,
This is added to the gate circuit 9. Therefore, the gate circuit 9 is opened only during this time, and at this time, the display information obtained from the shift register 7 is derived via the gate circuit 9 each time, and this is temporarily replaced with a video signal via the signal switching circuit 10. The signal is supplied to the CRT drive circuit 11. As a result, on the screen of the picture tube (CRT) 12, the number "70" representing the remaining time of the timer (for example, 70 minutes) is displayed at the corner of the television image.
The display is displayed for only a second as shown in FIG. 3, and the display disappears after 5 seconds have elapsed. After that, the remaining time on the timer will be set to the specified time (60 minutes, 45 minutes, 30 minutes, 15 minutes,
0 minutes) is displayed on the screen for 5 seconds. In other words, when the remaining time reaches 60 minutes, first “60” is displayed.
"45", "30", "15" (minutes) will be displayed for 5 seconds every 15 minutes after that, and finally "0" will be displayed for 5 seconds when the timer runs out. Is displayed. In this way, when "0" is displayed on the screen for 5 seconds, a power off signal is derived from the timer circuit 1 at that moment, the power on/off circuit 3 is turned off, and the receiver is then turned on as shown in FIG. 2c. Generation of the +B voltage is stopped. In the above embodiment, the remaining amount of time is displayed on the picture tube screen for 5 seconds every 15 minutes, but these unit times can be set arbitrarily in the timer circuit 1.

[Effect of the invention] According to the present invention, in a television receiver equipped with an off-timer function as described above, each time a predetermined timer remaining time is reached when setting a timer, the timer remaining time is displayed on the screen. Since the digital time is displayed in spots for a very short period of time, it is possible to check the remaining amount of time in minutes, for example, and there is no need to worry about the screen disappearing mid-way, which is confusing for viewers. It's extremely convenient.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of one embodiment of the present invention. FIG. 2 is a signal waveform diagram in the same embodiment. FIG. 3 is an explanatory diagram of the operation of the same embodiment. Explanation of symbols, 1...Timer circuit, 2...Clock pulse oscillator, 3...Power on/off circuit, 4
...memory, 9...gate circuit, 12...picture tube.

Claims (1)

[Scope of Claims] 1. In a television receiver equipped with an off-timer function that can set a timer for turning off the power, information on a preset timer is counted down based on a clock pulse to obtain timer remaining time information. timer circuit means for outputting a power-on signal while the remaining time is present and the timer remains; and a display for generating digital time display information corresponding to the timer remaining time obtained by counting down in the timer circuit means. information generating means; when the timer remaining time information reaches a predetermined timer remaining time, digital time display information obtained from the display information generating means is compared with the predetermined timer remaining time for a sufficiently short time; display information supply means for supplying only the remaining amount of time to the picture tube, and each time the remaining time of the timer reaches a predetermined time after setting the timer, the remaining time of the timer is digitally displayed for a short time on the picture tube screen. A timer remaining time display device for a television receiver, characterized in that: