KR19980085962A - Television receiver with power saving function - Google Patents

Abstract

The present invention relates to a television receiver having a power saving function, which can expect a power saving effect by automatically turning off the television receiver when a broadcast signal is not received when the television receiver is turned on. A tuner (2) for tuning the tuner, an IF processor (3) for separating and outputting the broadcast signal output from the tuner (2) into an audio and video intermediate frequency signal, a relay (18) for controlling input power, and the relay ( 18. A television receiver having a relay driver 19 for driving 18; A frequency control unit 103 for outputting a first level signal when the voice intermediate frequency signal is detected from the output signal of the IF processor 3 and a second level signal when the voice intermediate frequency signal is not detected; The timer 102 performs a counting operation according to a signal and counts a predetermined time, and when the second level signal is input from the frequency detector 103, the timer 102 outputs the counting completion signal. When the counting completion signal is input from the timer 102, the microprocessor 100 for driving control of the relay driver 19 to turn off the relay 18, and the microprocessor 100 It characterized in that it comprises a program storage unit 101, the operation program is stored.

Description

Television receiver with power saving function

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and in particular, a television having a power saving function, which can expect a power saving effect by automatically turning off the power of the television receiver when a broadcast signal is not received when the power of the television receiver is turned on. It relates to a receiver.

1 is a block diagram showing the structure of a conventional television receiver.

In the drawing, reference numeral 1 denotes an antenna, and 2 denotes a tuner which tunes a broadcast signal received through the antenna 1 and outputs a corresponding intermediate frequency signal IF according to a control signal of a microprocessor 9 to be described later. 3 denotes an IF processor for amplifying the intermediate frequency signal output from the tuner 2 as well as separating the image intermediate frequency signal PIF and the audio intermediate frequency signal SIF. And an audio detector and an image detector for detecting the audio signal and the video signal from the audio intermediate frequency signal and the video intermediate frequency signal separately outputted from the audio signal.

Further, reference numeral 6 denotes a remote control device for remotely controlling a function such as selecting a channel desired by the viewer with respect to the television receiver, and 7 denotes a predetermined remote control signal received from the remote control device 6 to receive a predetermined signal. A receiver for converting and outputting an electrical code signal, 8 is a channel memory in which predetermined channel data is stored, 9 is a microprocessor as a control unit for controlling the entire apparatus, and 10 is a television according to a control signal of the microprocessor 9. An OSD generator which generates and outputs a predetermined OSD pattern signal for displaying an operation state of a receiver to a viewer.

Further, reference numeral 12 is not shown for the audio signal output from the voice detector 4, but bass, treble, volume, etc. in accordance with the control signal from the microprocessor 9; 13 is a voice amplifier which amplifies the voice signal processed by the voice processor 12 and outputs it to the speaker SP of the rear stage.

Further, reference numeral 14 is not shown for the image signal output from the image detector 5, but according to the control signal from the microprocessor 9 Color, Tint, Brightness Image processing such as R (Red), G (Green), B (Blue), and luminance (-Y) signals are generated and output, as well as the image signal and the OSD generator 11 are output. An image processing unit which mixes and outputs R, G, B, and OSD blanking signals (Y '), and 15 denotes a CRT based on the R, G, B, and luminance (-Y) signals output from the image processing unit 14. It is a driving CRT drive unit.

In addition, reference numeral 16 is a power plug, 17 is a standby power supply for supplying standby power to the microprocessor 9 in the standby operation state (Stand-By) is not powered on, 18 is to interrupt the input power Relay 19 is a relay driver for driving the relay 18 according to the control signal of the microprocessor 9, 20 is required for each device based on the power input in accordance with the intermittent operation of the relay 18 It is a main power supply unit to generate and supply the operating power.

That is, in the above-described television receiver, when the viewer turns on the power of the television receiver, the microprocessor 9 drives and controls the relay 18 to supply predetermined operating power to the entire apparatus. On the other hand, when a specific channel is selected by the user, the microprocessor 9 recognizes the channel data from the channel memory 8 and executes channel tuning by tuning and controlling the tuner 2 based on the channel data. Done. In addition, the microprocessor 9 performs audio processing and image processing control on the broadcast signal tuned and output through the tuner 2 and outputs the audio signal to the speaker and the CRT, respectively.

On the other hand, in general, each broadcasting station does not transmit a broadcast signal when its regular broadcasting time passes, so the signal received from each television receiver becomes a signal of high-band noise component. Turning on the television receiver in the box not only causes unnecessary waste of power, but also causes problems such as aging of the device as a whole.

For example, it is particularly likely to occur when a viewer falls asleep while watching a program at a late time, or fails to recognize that a regular broadcast time of a broadcasting station has passed in the morning and fails to turn off the television receiver.

Accordingly, the present invention has been made in view of the above circumstances, and when the television receiver is powered on, it continuously searches for receiving a normal broadcast signal and automatically detects a broadcast carrier signal. It is an object of the present invention to provide a television receiver having a power saving function that can be expected to extend the life of the device and to save power by turning off the power supply.

1 is a block diagram showing the configuration of a conventional general television receiver.

2 is a block diagram showing a configuration of a television receiver having a power saving function according to an embodiment of the present invention.

3 is a flow chart for explaining the operation of the device of the configuration of FIG.

Brief description of the main parts of the drawing

1 antenna 2 tuner

3: IF processor 4: voice detector

5: image detection unit 6: remote control device

7: Receiver 8: Channel Memory

9, 100: microprocessor 10, 101: program storage unit

11: OSD generation unit 12: voice processing unit

13: voice amplifier 14: image processing unit

15: CRT drive unit 16: power plug

17 standby power unit 18 relay

19: relay driver 20: main power supply

102: timer 103: frequency detector

A television receiver having a power saving function according to the present invention for realizing the above object includes a tuner for tuning a broadcast signal, an IF processor for separating and outputting the broadcast signal output from the tuner as an audio and video intermediate frequency signal, and an input power source. A television receiver comprising a relay for controlling and a relay driver for driving the relay; A frequency detector for outputting a first level signal when the voice intermediate frequency signal is detected from the output signal of the IF processor and a second level signal when the voice intermediate frequency signal is not detected, and counting operation according to a predetermined control signal. A timer that outputs a counting completion signal when a predetermined time is counted during operation, and when the second level signal is inputted from the frequency detector, driving and controlling the timer, and when the counting completion signal is inputted from the timer, the relay. It characterized in that it comprises a microprocessor for driving control of the relay drive unit to turn off, and a program storage unit for storing the operation program of the microprocessor.

In the present invention, the microprocessor is characterized in that the timer is inhibited from driving if any key signal is input before the count completion signal is input from the timer.

Therefore, according to the above, the power supply is automatically turned off when the broadcast signal is not received, thereby providing an extended lifespan and a power saving effect of the device.

Next, an embodiment according to the present invention will be described with reference to the accompanying drawings.

2 is a block diagram showing the configuration of a television receiver having a power saving function according to an embodiment of the present invention. In Fig. 1, the same reference numerals are assigned to the parts performing the same functions as those in Fig. 1, and a detailed description thereof will be omitted.

In the drawing, reference numeral 100 denotes a microprocessor as a control unit for controlling the entire apparatus, and 101 denotes a program storage unit for storing an operation program for performing a control operation of the microprocessor 100.

Reference numeral 102 denotes a timer that counts a predetermined time according to a control signal of the microprocessor 100 and then outputs a counting result signal of a high level when the predetermined time is counted, and 103 denotes the IF. It detects the presence or absence of the voice intermediate frequency signal (SIF) outputted separately from the processing unit 3, and generates a low level signal when the voice intermediate frequency signal (SIF) is present (or normal state). A frequency detector for outputting a signal.

That is, in the present invention having the above-described configuration, the frequency detector 103 outputs a corresponding result signal based on the voice intermediate frequency signal output from the IF processor 3, and the microprocessor 100 When the high level result signal is inputted from the frequency detector 103, the timer 102 controls to drive the timer 102. Subsequently, when a predetermined counting completion signal is input from the timer 102, the microprocessor 100 cuts off the input power by controlling to turn off the relay 18.

Next, an embodiment according to the present invention will be described in more detail with reference to the flowchart of FIG. 3.

First, when a power key signal is input through an input means such as the remote controller 6 in a standby operation state (Stand-By), the microprocessor 100 drives the relay driver 19 to control the relay 18. By turning on), the power is input to the main power supply unit 20. Then, the main power supply unit 20 generates the operating power required for each device to supply to each device.

The microprocessor 100 tunes and controls the tuner 2 based on the channel data of the channel memory 8, so that the broadcast signals tuned through the tuner 2 are tuned. Audio processing and image processing are output to the speaker SP and the CRT. (ST1, ST2 steps)

On the other hand, the frequency detector 103 is to continuously output the result signal of a predetermined level to the microprocessor 100 on the basis of the voice intermediate frequency signal (SIF) output from the IF processor 3, When the microprocessor 100 receives, for example, a high level signal from the frequency detector 103 (step ST3), the microprocessor 100 initializes the timer 102 and executes control of the counting operation (step ST4).

Subsequently, the microprocessor 100 determines whether an arbitrary key signal is input from an input means such as the remote controller 6 after the high level signal is input from the frequency detector 103 or the timer 102. From step S5 and ST6, the controller continuously searches whether a high level result signal is received in response to the completion of the counting operation.

At this time, when an arbitrary key signal is input from the input means (step ST5), the microprocessor 100 suppresses the driving of the timer 102 (step ST7), and then proceeds to the ST3 step and the frequency detector ( From step 103, an operation such as searching whether a high level signal is inputted is repeatedly performed and controlled.

However, when a predetermined time elapses, that is, when a high level result signal is input from the timer 102 (step ST6), the microprocessor 100 controls the relay driver 19 to control the relay 18. By turning off, it controls to cut off the power input to the main power supply part 20 (ST8 step).

That is, according to the above, when the signal of the high-band noise component other than the broadcast signal is received, the power is automatically turned off to prevent the neglect of the television due to the mistake of the viewer, and the power saving effect can be expected.

In addition, this invention is not limited to the said Example, It can variously deform and implement within the range which does not deviate from the technical summary of this invention.

As described above, according to the present invention, when the television receiver is powered on, if the broadcast signal is continuously searched for and a high band noise signal is received instead of the broadcast signal, the television receiver is automatically turned off. It is possible to realize a television receiver having a power saving function capable of extending the life of the receiver and the power saving effect.

Claims (2)

A tuner 2 for tuning the broadcast signal, an IF processor 3 for separating and outputting the broadcast signal output from the tuner 2 into an audio and video intermediate frequency signal, a relay 18 for intermittent input power, and A television receiver comprising a relay driver (19) for driving a relay (18); A frequency detector 103 for outputting a first level signal when the voice intermediate frequency signal is detected from the output signal of the IF processor 3 and a second level signal when the voice intermediate frequency signal is not detected; The timer 102 performs a counting operation according to a predetermined control signal and outputs a counting completion signal when the predetermined time is counted. When the second level signal is input from the frequency detector 103, the timer 102 is driven to be controlled. When the counting signal is input from the timer 102, the relay 18 is turned off. Microprocessor 100 for driving control of the relay drive unit 19, Television receiver having a power saving function, characterized in that it comprises a program storage unit 101 for storing the operation program of the microprocessor (100). The power saving function of claim 1, wherein the microprocessor 100 suppresses driving of the timer 102 when an arbitrary key signal is input before the count completion signal is input from the timer 102. Having a television receiver.