KR19980017542A - Screen state control device of television receiver - Google Patents

Abstract

The present invention relates to an apparatus for controlling a screen state of a television receiver, which is capable of automatically switching the screen state to a standard state when an emergency bulletin broadcast is received in a state where the screen state is over-adjusted so that normal recognition of broadcast contents is impossible. . The screen state control apparatus of the television receiver according to the present invention is a television receiver provided with means for arbitrarily adjusting the screen state, the means for detecting whether or not the emergency speed broadcasting, standard screen data storage means for storing data relating to the standard screen state And judging whether or not the screen state is over-adjusted, and when emergency broadcasting is detected from the detection means while the screen state is over-adjusted, controlling the screen adjustment means based on the data stored in the standard screen data storage means. And control means for controlling the state to a standard state. In the above-described configuration, the detection of the emergency speed broadcasting is characterized in that the decoding is performed by decoding the KBPS data mixed with the broadcast signal.

Description

Screen state control device of television receiver

The present invention relates to an apparatus for controlling a screen state of a television receiver. In particular, the screen state can be automatically switched to a standard state when an emergency bulletin broadcast is received in a state where the screen state is over-adjusted so that normal recognition of broadcast contents is impossible. A screen state control apparatus for a television receiver.

Currently, most television receivers have a screen adjustment function for externally adjusting the screen state according to the user's taste. Examples of such adjustable screen states include brightness, image quality, contrast, and contrast. ), Color, and tint.

On the other hand, in recent years, in the case of cable broadcasting, the whole day broadcast is performed. When watching TV in the daytime and watching television in the evening, there is a difference in illuminance of the surroundings. The screen state of the lamp must be frequently operated.

However, the user may be over-adjusted in the process of optimally manipulating the screen state, and thus it may be difficult to normally recognize the received broadcast content during the over-adjustment. While it is not possible to recognize a very urgent or important broadcast, such as emergency bulletin or dandan, singular broadcast, there was a problem that is missed.

The present invention has been made to solve the above-described problems, so that the screen state is automatically changed to the standard state when an emergency bulletin broadcast is received in a state where the screen state is over-adjusted so that normal recognition of the broadcast contents is impossible. It is an object of the present invention to provide a screen state control apparatus of a television receiver.

The screen state control apparatus of the television receiver of the present invention for achieving the above-mentioned object is a television receiver having means for arbitrarily adjusting the screen state, the means for detecting whether or not the emergency speed broadcasting, data about the standard screen state It is judged whether or not over-adjustment of the standard screen data storage means and the screen state to be stored, and, if emergency broadcasting is detected from the detection means while the screen state is over-adjusted, based on the data stored in the standard screen data storage means. It characterized in that it comprises a control means for controlling the screen adjustment means to switch the screen state to the standard state.

In the above-described configuration, the detection of non-stop broadcasting is performed by decoding KBPS data mixed and transmitted in the broadcast signal.

In addition, the control method described above may be inconvenient to the user in some cases. In view of this, a key means for selecting / cancelling the aforementioned function and a memory means for storing a key input state from the key means are further provided. And the control apparatus of the present invention can be operated only when the selection key signal is input.

1 is a block diagram showing a signal processing system of a television receiver to which a screen state control apparatus of the present invention is applied.

* Description of the symbols for the main parts of the drawings *

1: antenna, 2: tuner,

3: IF amplification part, 4: P / S separation part,

5: voice detector, 6: image detector,

7: remote controller, 8: receiver,

9: microprocessor, 10: voice processing unit,

11: voice amplifier, 12: speaker,

13: OSD generating unit, 14: image processing unit,

15: mixer, 16: CRT drive unit,

17: CRT, 18: last memory,

20: standard screen data memory, 21: mode memory,

22: KBPS decoder unit.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the screen state control apparatus of a television receiver according to the present invention.

1 is a block diagram showing a signal processing system of a television receiver to which a screen state control apparatus of the present invention is applied. As shown in Fig. 1, in the television receiver to which the present invention is applied, the antenna 1 captures a broadcast wave signal of a plurality of channels transmitted from the transmitting station to the air, and the tuner 2 is driven by the antenna 1; Of the captured multiple channel broadcast signals, only the broadcast signal for the channel selected by the user is selectively passed and mixed with the locally generated frequency generated by itself to generate a predetermined intermediate frequency signal (hereinafter referred to as IF signal). Let's do it.

The IF amplification section 3 amplifies the IF signal generated by the tuner 2 to an appropriate size for processing. The P / S separation unit 4 includes a surface acoustic wave (SAW) filter and the like. The P / S separation unit 4 separates an image intermediate frequency signal and an audio intermediate frequency signal from the amplified IF signal. The intermediate frequency signal is detected to generate a voice signal. The voice processor 10 performs a process of adjusting the bass, treble, volume, and the like of the voice signal generated by the voice detector 5.

Next, the image detector 6 detects the image intermediate frequency signal separated by the P / S separator 4 to generate a composite image signal, and the image processor 14 provides the composite image signal provided by the image detector 6. The video signal is appropriately processed to generate the primary color signals R, G, and B and the luminance signal Y '.

The microprocessor 9 controls the overall operation of the television receiver, and the on-screen display (OSD) generation unit 13 controls various characters or marks related to the operation state of the television receiver under the control of the microprocessor 9. 17) Generates a signal (hereinafter referred to as an OSD signal) for display on the screen. Next, the mixer 15 generates new primary color signals R, G, and B by mixing the OSD signal generated as described above with the above-described primary color signals R, G, and B, and luminance signal Y 'at high speed. The CRT driver 16 drives the CRT 17 based on the primary color signals R, G, and B generated in this way.

The KBPS decoder unit 22 is given to detect whether or not the broadcast currently received is an emergency broadcast. In more detail, at present, a domestic broadcasting station is developing a service (called KBPS (Korea Broadcasting Program Service)) that transmits various information about the time and type of a broadcast program together with a broadcast signal. When such a service is executed, the receiving side can decode it and provide various services to the viewer. The KBPS decoder 22 includes a KBPS data extractor for detecting a KBPS code signal ubiquitous in a specific band of a broadcast signal, a sync signal detector for detecting a sync signal, and a child shape corresponding to the code detected by the operation. OSD generation unit for outputting a predetermined OSD pattern corresponding to the character generation ROM and KBPS code for storing the image, a program storage unit for storing the operation program of the OSD generation unit, according to a predetermined control signal from the microprocessor (9) And a data storage unit for updating the KBPS code signal at regular time intervals.

In FIG. 1, reference numeral 7 denotes a remote controller for remotely controlling the operation of the television receiver, and the remote controller 7 selects / cancels various keys for adjusting the screen state and the control function of the present invention. Keys are provided. Reference numeral 8 denotes a receiver which receives a remote control signal transmitted from the remote controller 7, and 18 denotes a last memory for storing various setting data such as a channel, a screen adjustment state, and a volume immediately before powering off the television receiver. Indicates.

Next, reference numeral 20 denotes a standard screen data memory for storing data about standard screen states, that is, standard screen data for brightness, image quality, contrast, color and color intensity, and 21, a key from the select / cancel key. The memory for storing the input state (hereinafter referred to as mode memory).

Hereinafter, the operation of the screen state control apparatus of the television receiver of the present invention will be described in detail.

First, when the user selects a desired channel and receives a broadcast, the screen is adjusted by manipulating the screen adjustment keys provided on the key panel of the remote controller 7 or the television receiver. 14), the screen state is adjusted according to the input key signal, and at the same time, the sum of all the key data of the screen adjustment keys is compared with a predetermined reference value to determine whether the screen state is over-adjusted.

Next, when it is determined that the screen state is over-adjusted according to the comparison result, that is, when it is determined that the received broadcast content cannot be recognized, the microprocessor 9 again detects the detection signal provided from the KBPS decoder 22 during this time. On the basis of this, it is determined whether the currently received broadcast is an emergency breaking broadcast.

In the above-described process, if it is confirmed that the currently received broadcast is the emergency broadcasting, the microprocessor 9 automatically stores the current adjusted screen state in the last memory 18 and simultaneously stores the data stored in the standard picture data memory 20. Read and automatically change the screen status to the standard status. As the screen state is switched to the standard state, the user can recognize the broadcast contents regardless of over-adjustment of the screen state while the emergency broadcasting is received.

Next, when the information indicating that the emergency broadcasting is terminated is provided from the KBPS decoder 22, the microprocessor 9 immediately adjusts the screen state based on the data stored in the last memory 18 and switches the screen state to the stopped state. do.

Furthermore, this control function may be canceled based on the select / cancel key provided in the remote controller 7. When such a cancel key is input, the microprocessor 9 stores it in the mode memory 21 and thereafter. Is controlled so that the control function of the present invention does not operate.

The present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the technical idea of the present invention.

According to the screen state control apparatus of the television receiver of the present invention as described above, the screen state is automatically set to the standard state when the emergency state broadcasting is received while the screen state is over-adjusted and normal recognition of the broadcast contents is impossible. By switching, the user does not miss important broadcast contents.

Claims (2)

A television receiver having means for arbitrarily adjusting a screen state; Means for detecting the emergency broadcasting; Standard screen data storage means for storing data relating to a standard screen state; It is judged whether or not over-adjustment of the screen state, and if emergency broadcasting is detected from the detection means while the screen state is over-adjusted, the screen adjustment means is controlled based on the data stored in the standard screen data storage means. And a control means for switching to a standard state. 2. The apparatus of claim 1, wherein the detection of the emergency broadcasting is performed by decoding KBPS data mixed and transmitted in a broadcast signal.