JPS6338372A - Television receiver - Google Patents

Abstract

PURPOSE:To eliminate troublesome operation and to avoid disturbance to a sleep by inputting the control data corresponding to the lightness of a picture secured in an ON mode of a sleep timer to a 1st nonvolatile memory and controlling the lightness of the picture based on the control data stored in a 2nd nonvolatile memory. CONSTITUTION:The control data corresponding to the lightness of a picture shown on a CRT 11 is inputted to the 1st nonvolatile memory 19 in an ON mode of a sleep timer. At the same time, the lightness of the picture shown on the CRT 11 is controlled based on the control data stored in the 2nd nonvolatile memory 20. Then the control data on the memory 20 is rewritten into the control data corresponding to the lightness of the picture when the sleep timer time is through. In such a way, a picture is automatically set a proper level of lightness set previously only in an active mode of the sleep timer without having any operation. Thus the troublesome operations are omitted together with no disturbance given to a sleep.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a television receiver having a sleeve timer function that automatically turns off the power after a predetermined period of time has elapsed.

(Summary of the Invention) The present invention provides a television receiver having a sleeve timer function that automatically turns off the power after a predetermined period of time has elapsed. The brightness of the image is controlled based on the control data input to the non-volatile memory of the second non-volatile memory and stored in the second non-volatile memory. The screen is set to an appropriate brightness that is set in advance, so that it does not disturb your sleep without having to perform any troublesome operations.

[Conventional technology]

Some television receivers m#FA are equipped with a sleeve timer function. This sleeve timer function is a function that, when the user selects a predetermined time of 1 hour 19. -4', the power to the receiver is turned off at 1" after the elapse of this predetermined time.

This sleeve timer function is used when the user wants to fall asleep while watching TV broadcasts.
The automatic power off will cause the user to end up at 1,1- (
There are ways to prevent unnecessary reception of television broadcasts that no one is watching.

[Problem that the invention seeks to solve]

By the way, when sleeping in this way, the brightness of the room is generally dimmed, so in normal conditions where the image is set to be received in a bright room, the brightness of the screen etc. is too high and can interfere with sleep. There was some peeling. Therefore, when the sleep timer is turned on, the user must operate the adjustment knob of the television receiver to reduce the brightness of the screen, which is inconvenient and requires complicated operations. Furthermore, when you adjust the brightness etc. to make it easy to sleep, if you want to watch TV broadcasts on this television receiver after waking up, adjust the brightness of the room by -()11 and adjust the inner brightness etc. to +tr.
<I had to have L.

Note that this problem does not exist in the case of television receivers that automatically change the screen brightness by detecting the brightness of the room; In view of these points, the present invention provides a television receiver that has a simple configuration and whose screen does not show signs of sleep only when the sleeve timer is activated. The purpose is to propose a John receiver.

[Means for solving problems]

For example, as shown in FIG.
)-1- is manually transmitted to the first nonvolatile memory (19), and based on the control data stored in the second nonvolatile memory (20), the cathode ray tube ( 11) The brightness of the upper image is controlled in 4).

In addition, the TV One reception of the present invention @! For example, as shown in Fig. 1, when the sleep timer is on, the machine stores control data corresponding to the brightness of the u++i image on the cathode ray tube (11) in the first memory (1j!) when the sleep timer is on. The brightness of the image on the cathode ray tube (11) is controlled based on the control data stored in the second non-volatile memory (20), and when the sleeve timer ends, the control data in the second non-volatile memory is is rewritten to system-a11 data corresponding to the brightness of the image at the final time.

[Effect]

The television receiver tJRn of the present invention automatically adjusts the screen to a preset appropriate brightness only when the sleeve timer is activated, without any troublesome operations. Does not disturb sleep. Furthermore, the television receiver of the present invention @! When the sleeve timer operation ends, the machine
In order to rewrite the control data in the nonvolatile memo IJ (20), if the control data is changed while the sleeve timer is operating, the brightness of the screen will be adjusted according to the changed control data even when the sleeve timer is operated thereafter.

〔Example〕

Hereinafter, one embodiment of the television receiver of the present invention will be described with reference to the accompanying drawings.

Figure 1 shows the configuration of the television receiver of this example.
In the figure, 11 in the figure indicates the antenna (
The broadcast waves obtained at 11 are supplied to a tuner (2). This tuner (2) is used by a microcomputer (1), which will be described later.
5), the broadcast signal with the desired channel selection is transmitted to Y via the intermediate frequency circuit (3) and the video detection circuit (4).
/C division circuit (5), and the Y/C division 1i111
At step VP1151, the signal is separated into a luminance signal and a chroma signal.

Then, this separated luminance signal is processed by an amplifier (6) whose gain is controlled by a microcomputer (I5), which will be described later.
) to the matrix circuit (7), and the divided chroma signal is sent to the color recovery circuit (1) via an amplifier (8) whose gain is controlled by a microcomputer (15), which will be described later.
&I unit (9). Color decompressor (C old 1t, demodulates the supplied chroma signal into a color difference signal of R-Y signal and R-Y Shingetsu, and converts this R-Y signal and 13-Y signal into matrix circuit (7) This 7-trix circuit (7) creates three primary color signals (red No. 14, green signal, and blue signal) from the supplied l?-Y signal, 13-Y signal, and luminance signal. , the three primary colors G4 are respectively supplied to the negative [i[1' (11)] via the amplifiers (1011), (IOG) and (10+1).In this way, signals are supplied to the cathode ray tube (11). By being
Television/it selected by tuner (2) l'1
(Transmission and reception are performed.

In addition, the output signal of M3 +/+1 between video detection
It is also supplied to the audio demodulation circuit (12).
) to receive the audio signal demodulated by the microphone r
l Supplied to a speaker (14) via an amplifier (I3) whose gain is controlled by a two-input computer (15),
This speaker (14) outputs the audio based on the audio rental.

In the television receiver of this example, the microcomputer (15) selects the tuner (2) and adjusts the gain of the amplifiers (61, (81, and (13)). I5 is remote: 1 control device (16) and keyboard (17)
This remote control I roll device (
I6) or the keyboard (J7), the microcomputer (15) controls the tuner (2), amplifier +61 . Controls each circuit such as (8) and (13). Further, as a memory for storing the control state of the microcomputer (15), a random access memory (RAM) (1B) for storing the state under control, and a first and second
nonvolatile memories (19) and (20).

Television broadcast channel selection is controlled by supplying a channel selection signal a from the microcomputer (15) configured as described above to the tuner (2). In addition, by supplying a gain control signal (13) from the microcomputer (I5) to the amplifier (6), the DC level of the brightness signal changes, and the brightness of the image obtained by the cathode ray tube (11) changes. In addition, by supplying gain control (No. 4 C) from the microcomputer (15) to the amplifiers (6) and (8), the amplitude of the total color signal flow is 11'1.1. etc., and the so-called picture control (1'') is performed in which the -Inl Las I- of lll11@! obtained in the cathode ray tube (11) changes.

Furthermore, from the microcombiner (15) to the amplifier (1
3) by supplying the gain control signal d to the speaker (
The volume of the audio output from I4) changes.

Further, this microcomputer (15) is capable of controlling the sleeve timer function based on key operations on a remote control device (16), etc., and generates the sleeve timer by operating the sleeve timer keys. !1i11 The power to this television receiver is automatically turned off, for example, after one hour.Then, the microcomputer (15
) is the amplifier (61, (81 and (I
ll) gain control is performed.

1. The operation when the sleeve timer is activated will be explained with reference to the flowchart in Fig.
2) Performs the general control operations (main processing) necessary for image reception such as channel selection. At this time, the channel selection signal a and the gain adjustment signal immediately before the power is turned off are used.

The data of c and d are stored in the first memory (19) when the power is turned off.
When the i source is turned on, channel selection and gain adjustment are performed using the data in this first non-volatile memory (19).
When the power is turned on, the same channel selection, brightness control, picture control, and volume control are performed as when the power is turned off.

When the sleeve timer is activated by pressing the key S during image reception in this way, the bright control state and volume control state immediately before the sleeve timer was activated are stored in the full RAM (1B). The amplifier gain control signals S, C, D are stored in the first non-volatile memory (19). Then, the data of the gain control signals A, C, D stored in the second non-volatile memory (20) is transferred to the RAM (Hl), and the data is transferred to the second non-volatile memory (20). The bright control, picture control, and i'78 system θ11 are set to L according to the memorized data.At this time, when the receiver is used, the bright control is set by operating keys on the keyboard, etc. , picture control, or volume control is changed to a different state, the data in RAM (18) is changed to data based on this operation.In this way, the current state is changed to the sleeve timer function. When the wire is automatically turned off, the data in the RAM (18) is transferred to the second non-volatile memory (20) and then the power is turned off.

In this way, when the sleeve timer is activated, the data in the second non-volatile memory (20) is used to control the brightness, volume, and volume. Normal braai 1: I troll,
The picture control and sound control states can be different. Here, as data in the second non-volatile memory (20), a brightness control that provides an image suitable for viewing in a dark room with lower brightness and contrast than in normal use conditions, and a lower volume than in normal use conditions. By storing the volume control data for outputting audio in °ζ, when the sleeve timer is activated, the brightness and contrast of the image are automatically lowered to make it easier to see in a dark room. The state is such that it does not disturb sleep, and the volume is set to a low volume that does not disturb sleep.

If you want to change the brightness and contrast of the image when the sleeve timer is activated due to changes in the room situation, etc., operate the keys on the keyboard (17) etc. while the sleeve timer is activated (each time δ114 is adjusted). In addition, since the j+il control data adjusted every t period is newly stored in the second non-volatile memory (20), the setting state after this adjustment will be changed even when the sleeve timer is activated thereafter.

In this way, when the power is turned on manually after the 'L!L gap is turned off by the sleeve timer function, the microcomputer (15) performs the normal main processing, so it is The data in the first non-volatile memory (19) in the state of 19 is used to control the light 21 (l-o-), perform picture control and volume control, and provide a normal image and rflf suitable for viewing in a bright room, for example. There is no need to perform any operation to restore the state when the sleeve timer is activated. In addition,
When the sleeve timer is activated and you want to keep the image in the same state as normal, the second non-volatile memory (2
Normal data may be stored as the data of 0).

It should be noted that the present invention is not limited to the above-mentioned embodiment, and it goes without saying that various other configurations may be adopted without departing from the gist of the present invention.

〔Effect of the invention〕

According to the television receiver of the present invention, when the sleeve timer is activated, the meat N+i is automatically set without any operation.
is the preset suitability"'+i(1!If it becomes rusa,
There is an advantage in that you can make your sleep more comfortable without having to do any troublesome operations.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the television receiver of the present invention, and FIG. 2 is a flowchart 1 diagram for explaining the example in FIG. +61, +81 and (13) are amplifiers, (11)
(15) is a microcomputer, (19) is a cathode ray tube, (15) is a microcomputer, (19)
) is the first nonvolatile memory, and (20) is the second nonvolatile memory.

Claims (1)

[Claims] 1. When the sleep timer is turned on, control data corresponding to the brightness of the image when the sleep timer is turned on is input into the first non-volatile memory, and the image is changed based on the control data stored in the second non-volatile memory. A television receiver characterized in that the brightness of the television receiver is controlled. 2. When the sleep timer is turned on, control data corresponding to the brightness of the image when the sleep timer is turned on is input into the first non-volatile memory, and the brightness of the image is controlled based on the control data stored in the second non-volatile memory. . A television receiver, characterized in that when the sleep timer time ends, the control data in the second non-volatile memory is rewritten to control data corresponding to the brightness of the image at the time of the end.