KR940017845A - Text service broadcasting method and text service method receiving device - Google Patents

Abstract

The present invention relates to a text service broadcasting method for receiving an image signal and a text service signal on a television broadcast signal, transmitting the received video signal, and displaying the same on a screen.

Conventional text service broadcasting has a broadcasting method in which teletext information or caption information is carried and transmitted in a vertical retrace period of a television broadcast signal, the receiver side separates and decodes the information, and displays the contents of the decoded text on the screen. As the receiving device, the size, color, display position, etc. of the characters displayed on the screen are fixed, so that they cannot be freely changed according to the user's preference, and the user can be provided due to the limitation of the character information sent in the vertical retrace period. There is a problem in that the content of the existing information is limited and cannot be varied.

According to the present invention, a group of character information grouped by the same type of information is sent by coding two or more character information groups in a vertical retrace period of a television broadcast signal, and the receiving side selects and views these character information groups according to user selection. To display the desired character information on the screen and to freely adjust the size and color display position of the character information, and to apply to the device to transmit and receive the character information with the image.

Description

Text service broadcasting method and text service broadcasting receiver

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

1 is a block diagram of a text service broadcast receiving apparatus of the present invention, FIG. 2 is a block diagram of a text service broadcasting signal of the present invention, and FIG. 3 is a detailed view of the text service broadcast signal of the present invention.

Claims (2)

Multiplexing two or more groups of character information (G1-Gn) grouped together in the same class of information, such as a program guide, a program description message, and a broadcast program start and end time, in the vertical retrace period of the transmitted broadcast signal. And a process of separating the character information group G1-Gn carried in the vertical retrace period of the transmitted broadcast signal, and selecting one information group from the separated character information group G1-Gn. Character service broadcasting method comprising the process of decoding the selected information group and displays the corresponding character on the screen. In the RF amplifier (1) for amplifying the received broadcast signal, the code detection switch unit (2) for switching the signal transmission path according to the presence or absence of the character code of the amplified broadcast signal, and the code detection switching unit (2) A code separator (3) for separating the video signal and the character code from the outputted broadcast signal, and selecting and decoding a character group desired to be viewed from the separated character code, and generating and size and display position of the character corresponding to the code; A decode / control unit 4 for adjusting and controlling a background color, a character generator 5 for generating a text signal to be displayed on the screen under the control of the decode / control unit 4, and a separation from the code separator 3; A mixing unit 6 for synthesizing and outputting a character signal generated by the character generator 5 to an image signal, an image signal output from the code detection switching unit 2 or an image signal output from the mixing unit 6; Luminance / color amplifier 7 for amplifying The message service broadcast receiver composed of a luminance / color processing unit 8 to perform the brightness and color-band conversion and demodulation, amplification of the video signal and outputting an image signal to be displayed on the screen. ※ Note: The disclosure is based on the initial application.