KR970032100A - Broadcast signal restriction method - Google Patents

Abstract

The present invention relates to a method for limiting a broadcast signal, wherein a predetermined part of a broadcast signal tuned through a tuner, that is, an identification code included in identification data included in the VBI is an adult code, based on a control signal by stopping processing of a signal by a CPU. Signal processing of the broadcast signal tuned through the tuner in the processing unit is stopped, and a message for code input is OSD processed through the OSD driver and displayed on the TV receiver based on the display control signal from the CPU. Then, if the code input through the key input unit and the encryption code stored in the memory are the same, the broadcast signal tuned in the tuner is signal-processed through the signal processing unit based on the control signal by the signal processing from the CPU It is output to TV receiver and speaker. At this time, if the unique code detected by the identification data detection unit and the unique code stored in the memory are not equal to each other, the signal processing in the signal processing unit is stopped again, and a message for code input is based on the display control signal from the CPU. By being displayed again by the TV receiver, it is possible to restrict the viewing of the adult broadcast signal by adolescents because a password input is required for the adult broadcast signal.

Description

Broadcast signal restriction method

Since this is an open matter, no full text was included.

1 is a schematic block diagram of hardware for performing a broadcast signal restriction method according to the present invention.

2 is a flowchart illustrating an operation of restricting a broadcast signal according to a preferred embodiment of the present invention.

Claims (2)

In the method for limiting a broadcast signal of each channel transmitted from a broadcasting station, the tuner 130 tunes a broadcast signal of a channel selected on the basis of a viewer's operation signal through the key input unit 110 to tune the broadcast signal. A first step of detecting identification data included in a predetermined portion; A second step of storing a unique code corresponding to each broadcast program included in the identification data detected in the first step in a memory 115 and checking a classification code included in the identification data; If the discrimination code is a youth code, the tuner 130 processes the broadcast signal tuned by the tuner 130 and outputs the signal to a receiver and a speaker of the TV. If the discrimination code is an adult code, the tuner ( A third step of stopping signal processing of the tuned broadcast signal through 130 and simultaneously displaying a message for code input stored in the memory 115 by using the TV receiver; Comparing the code input through the key input means 110 with a predetermined encryption code stored in the memory 115, if the two codes are different from each other, the error message stored in the memory 115 is OSD processing A fourth step of displaying the image on the TV receiver, and if the two codes are the same, processing the stopped broadcast signal and outputting the signal to the speaker of the TV receiver; The unique code included in the identification data for the broadcast signal after tuning through the tuner 130 and the previous unique code stored in the memory 115 are compared to the subsequent unique code and the memory 115. A fifth step of continuously processing the broadcast signal tuned through the tuner 130 and outputting the same to the speaker of the TV receiver if the previously stored unique codes are the same; And the sixth step of repeating each step if the subsequent unique code and the previous unique code stored in the memory (115) are different from each other in the fifth step. The method of claim 1, wherein the predetermined portion is a VBI of a broadcast signal tuned by the tuner. ※ Note: The disclosure is based on the initial application.