KR970008371B1 - Television receiver - Google Patents

Abstract

To provide a television(TV) to control image and audio signals with discrete condition according to AV or TV mode. The TV consists of a mode selection means to select AV mode and TV mode, the first memory means to store the established control status data for image and audio signals of AV mode, the second memory means to store the established control status data for image and audio signals of TV mode and a control means to control TV by the control status data, stored in the memory means, corresponding to the selected mode in case that mode conversion signal is inputted by the mode selection means. Thereby, it is possible to provide a TV which can adjust image and audio signals with each discrete condition for AV mode and TV mode.

Description

TV receiver

1 is a block diagram showing the main components of a television receiver according to an embodiment of the present invention.

2 is a block diagram showing the main components of a television receiver according to another embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

1: antenna, 2: tuner,

3: IF circuit 4: External AV device

5: switching unit, 6: voice processing unit,

7: amplification unit, 8: image processing unit,

9: CRT driving circuit, 10: remote control device,

11: receiving unit, 12: mode switching detection unit,

13,14: memory, 15: control unit,

16: timer, CP: judgment unit.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a television receiver, and more particularly, to a television receiver configured to control video signals and audio signals output from a television receiver under separate conditions according to an AV (Audio Video) / TV mode.

In general, in a television receiver (hereinafter referred to as a TV), video and audio signals reproduced by an external device such as a VCR (Video Cassette Recorder) can be output through a CRT (Cathode-ray Tude) and a speaker equipped with a TV. External signal input terminal is provided.

When the viewer selects a video mode or a TV mode using a remote control device or the like, the microprocessor installed in the TV reproduces the video and audio signals of the broadcast signal demodulated by the IF circuit (intermediate frequency circuit) of the TV and the VCR. Mode switching is performed by switching the video and audio signals to the image processor and the audio processor.

However, in general, video and audio signals corresponding to broadcast signals and video and audio signals reproduced from video tapes have different signal states. This is caused by differences in the characteristics of the recording device.

Therefore, from the user's point of view, each time the AV / TV mode is switched, the control state of the image processor, the audio processor, and the audio amplifier, that is, the treble, base, and volume For the image processing unit, there is a case in which sharpness, brightness, color, tint and contrast are adjusted again, which is a very cumbersome task. .

Accordingly, the present invention has been made in view of the above circumstances, and an object thereof is to provide a television receiver capable of adjusting video and audio signals with separate control conditions for the AV mode and the TV mode.

A television receiver according to the present invention for realizing the above object comprises a mode selecting means for the viewer to select an AV mode and a TV mode, and a first state for storing control state data set by the viewer for video and audio signals in the AV mode. Memory means, second memory means for storing control state data set by the viewer for video and audio signals in the TV mode, and when a mode switching signal is input by the mode selecting means, the memory means corresponding to the selected mode is stored in the memory means. And control means for controlling the television receiver based on the control state data.

That is, according to the present invention having the above-described configuration, since the control state data for each mode is separately stored and then the television receiver is controlled based on the control state data corresponding to the selected mode, the viewer can change the image. Discomfort to change the control state for the signal and the voice signal is eliminated.

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

1 is a block diagram showing the main components of a television receiver according to an embodiment of the present invention. In the drawing, reference numeral 1 is an antenna, 2 is a tuner for a carrier station, and 3 is tuned by the tuner 2. IF circuit for detecting video and audio signals from a broadcast signal, 4 is a lower AV device such as a VCR, 5 is external to the IF circuit 3 and the external device according to a switching signal SW from the controller 15 to be described later. A switching unit for selectively outputting video and audio signals from the AV device 4.

In addition, reference numeral 6 is a voice processing unit for processing the voice signal output from the switching unit 5 in accordance with the treble control signal Tr and the base control signal Ba applied from the control unit 15, 7 is the control unit. An amplifier for amplifying the voice signal processed by the voice processor 6 according to the volume control signal Am applied from the speaker 15 and outputting the speaker, 8 denotes sharpness Sh and bright applied from the controller 15; An image processing unit for processing an image signal output from the switching unit 5 according to the varnish (Br), color (Cr), tint (Ti), and contrast (Cn) control signals, and 9 is output from the image processing unit (8). The CRT driving circuit drives the CRT according to R (Red), G (Green), and B (Blue) signals.

In addition, reference numeral 10 denotes a remote control device for the viewer to select the AV mode or TV mode, 11 is a receiving unit for receiving a remote control signal from the remote control device 10, 12 is a remote control signal received at the receiving unit 11; The mode change detection unit detects a mode change on the basis of.

Further, reference numeral 13 denotes a first memory in which control state data for controlling the image processor 8 of the audio processor 6 and the amplifier 7 is stored in the TV mode, and 14 denotes the The second memory stores control state data for controlling the audio processor 6, the amplifier 7, and the image processor 8.

In addition, reference numeral 15 denotes a control unit for controlling the entire apparatus. When the mode power is detected by the mode power supply detecting unit 12, the control unit switches the switching unit 5 to correspond to the selected mode and switches to the selected mode. The corresponding memory 13 or 14 is read out and the image processor 8 of the audio processor 6 and the amplifier 7 is controlled based on the read data. In addition, when the viewer inputs an adjustment signal for a video signal or an audio signal using the remote controller, the controller 15 updates the stored data of the memory 13 or 14 corresponding to the currently selected mode.

That is, in the above configuration, memories 13 and 14 for storing control state data in each mode are provided corresponding to TV operation modes (AV mode, TV mode).

The controller 15 controls the audio processor 6, the amplifier 8, and the image processor 8 based on the control state data stored in the memory 13 or 14 corresponding to the mode selected by the viewer. .

Therefore, in the above embodiment, the inconvenience of the viewer having to re-adjust the video signal or the audio signal every time the mode is changed is eliminated.

However, in the above embodiment, in the case where there is a large difference in the value of the control state data stored in the first memory 13 and the second memory 14, in particular, the control data Am for adjusting the amplification degree of the amplifier 7 is shown. If there is a large difference between the control data Br for adjusting the brightness of the image processing unit 8 and the viewer performs the mode switching using the remote controller 10, the screen brightness of the CRT is output through the speaker and the speaker. The level change of the audio signal occurs suddenly.

Of course, such rapid fluctuations are not limited to the above embodiment, but occur in the same manner when switching modes in a general TV.

In addition, when there is a sudden change in the level of the screen brightness and the output audio signal as described above, it causes harm to the viewer's vision and hearing organs, and also makes the viewer uneasy.

2 is a block diagram showing the configuration of a TV according to another embodiment of the present invention in consideration of the above circumstances. When the viewer performs mode switching, the controller 15 sets the luminance level and the audio output level to "0". It is monotonically increasing from the level to the setting level stored in the memory.

That is, in Fig. 2, reference numeral 16 denotes a timer 16 for executing the counting operation when a detection signal is applied from the mode switching detection unit 12, and CP is a determination unit for determining the counting level by the timer 16. .

The determination unit CP is provided with a plurality of comparators CP1 to CPn + 1 having reference data set differently (T0 < T1 < Tn < Cn + 1) and outputted from the timer 16, respectively. As T increases, the comparator CP1 outputs the comparison signal having the "H" level in the order of the comparator CPn + 1.

The control unit 15 sets the output levels of the brightness control signal Br and the volume control signal Am within the limits stored in the memory 13 or 14 in accordance with the signal determined by the determination unit CP. By gradually increasing, the luminance level and the audio output level are monotonically increased.

Here, the level increase of the control signal can be easily performed by using the pulse width modulated signal and the integrating circuit which are generally employed in the TV, and the output signal of the comparator CPn + 1 is determined by the determination unit CP. Is used as a reset signal of the timer 16.

Therefore, according to the above embodiment, a monotonous increase in the audio level output through the speaker of the brightness level of the video signal output to the CRT at the time of mode switching is performed, thereby eliminating the burden on the viewer due to the sudden change in the output level. .

In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the technical gist of the present invention.

As described above, according to the present invention, it is possible to realize a television receiver capable of adjusting video and audio signals with separate control conditions for the AV mode and the TV mode, respectively.

Claims (2)

Mode selection means for the viewer to select the AV mode and the TV mode, first memory means for storing the control state data set by the viewer for the video and audio signals in the AV mode, and the viewer for the video and audio signals in the TV mode. Memory means for storing the control state data set by the controller and control means for controlling the television receiver based on the control state data stored in the memory means corresponding to the selected mode when the mode selection signal is input by the mode selection means. TV receiver comprising a. 2. The apparatus according to claim 1, further comprising timer means for executing a predetermined counting operation when a mode selection signal is input by said mode selection means, and determining means for determining the count level by said timer means. And the control means controls the television receiver to a level corresponding to the coefficient level determined by the determination means within a level range of control state data stored in the first or second memory means.