KR950023029A - Channel Selection Control Method and Data Format Structure in Subscriber Terminal for Optical Cable TV - Google Patents

Abstract

The present invention provides a method and a data format structure for controlling TV channel selection, stereo audio channel selection, TV audio mode selection, and password processing for a Pay Per View (PPV) channel with a remote controller that is a failed remote controller in a digital optical CATV system. As described above, the present invention performs the following function items by using a remote controller and a keypad in the subscriber terminal device in the subscriber's house in the optical CATV system.

-Two channels of TV32 channel can be selected and PPV channel password can be processed.

-You can select 1 channel of 14 channels of stereo audio and TV audio mode.

Processes TV1 and TV2 channel selection information in a data format related to TV channel selection information.

Process the data in the data format associated with the stereo audio channel and TV audio mode.

Description

Channel Selection Control Method and Data Format Structure in Subscriber Terminal for Optical Cable TV

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

1 is a structural diagram of an optical CATV system to which the present invention is applied;

2 is a detailed view of a subscriber station subsystem;

3 is a schematic diagram of a TV selection data format;

4 is a stereo audio channel selection and TV audio mode selection data format structure diagram,

5 is a flowchart of a subscriber station channel selection control according to the present invention.

Claims (3)

Headend (2), Central Station (2), Distribution Center (3), Program Provider (5), TV / Stereo Coding Unit (6), Optical Transmission System (7), Maintenance System (8), Two-way Communication Service Connected to the matching unit 9, 10, broadband distribution unit 11, subscriber control processor unit 12, subscriber access unit 13, the subscriber access unit 13, optical transceiver 14, 155 Mb / s multiple For an optical cable television having a subscriber station 4 having a reverse demultiplexer 15, a TV / stereo audio signal decoder 16, a bidirectional communication service matching unit 17, and a subscriber station control unit 18 In the channel selection control method applied to the subscriber station, the first step of waiting for input to the key counter from the subscriber after initializing the key counter buffer and initializing the LCD driver in the subscriber station control unit 18 ( 25,26); A second step (27) of checking whether TV1 audio / TV2 audio is selected at a key counter after performing the first steps (25, 26); A third step (28, 29) of transmitting the audio mode selection data to the TV / stereo audio signal decoder (16) when the selected key-in data key in the TV audio mode after performing the second step (27); After performing the second step 27, if TV1 audio / TV2 audio is not selected, it is checked whether TV1, TV2, or audio channel is selected, and if the selected key data is audio / TV1 / TV2 is off, input and select off-data. If not, the fourth step (30 to 36) to wait for the next data; A fifth step (37) of checking whether TV1 or TV2 is selected after performing the first step (25, 26); A sixth step (38,39) of checking whether the channel selection data is within the TV channel range and whether it is a PPV channel if the TV1 and TV2 are selected after performing the fifth step (37); After performing the sixth step (38,39), the seventh step (40) of outputting the password input screen for the PPV channel range, and transmitting the TV channel selection data to the subscriber control processor unit 18 in the case of the general TV channel 41); An eighth step (43, 42) of selecting stereo audio after the fifth step (37) and checking whether key-in data is within an audio channel range and transmitting it to the decoder unit (16); After performing the sixth step (38, 39), if the range of the PPV channel checks whether a password exists in the password data memory for inputting a password according to the password input screen output, and if the existing password exists, the existing password is renewed. A ninth step (43 to 54) of inputting the PPV channel suntec data if the keyed password data is verified and outputting an error screen if it is wrong; After performing the ninth steps 43 to 54, the key counter re-enters the password, compares the password recorded in the temporary storage buffer with the re-entered password, sets a password in the password data specifying memory, and sets the password in the subscriber control processor. And a tenth step (55 to 63) for transmitting the PPV channel selection data to the unit (18) and initializing the temporary storage buffer. Headend (2), Central Station (2), Distribution Center (3), Program Provider (5), TV / Stereo Coding Unit (6), Optical Transmission System (7), Maintenance System (8), Two-way Communication Service Connected to the matching unit 9, 10, broadband distribution unit 11, subscriber control processor unit 12, subscriber access unit 13, the subscriber access unit 13, optical transceiver 14, 155 Mb / s multiple For an optical cable television having a subscriber station 4 having a reverse demultiplexer 15, a TV / stereo audio signal decoder 16, a bidirectional communication service matching unit 17, and a subscriber station control unit 18 In the data format for transmitting data with the subscriber control processor unit 12 present in the distribution center 13 to the subscriber station control unit 18, which is applied to the subscriber station, D7 to D5 are state data, A data format structure, wherein D4 to D0 are allocated to channel data. Headend (2), Central Station (2), Distribution Center (3), Program Provider (5), TV / Stereo Coding Unit (6), Optical Transmission System (7), Maintenance System (8), Two-way Communication Service Matching unit 9, 10, broadband distribution unit 11, subscriber control processor unit 12, subscriber access device 13, subscriber control processor unit 12, subscriber access device 13, subscriber access device An optical transceiver 14, a 155 Mb / s multiple / demultiplexer 15, a TV / stereo audio signal decoder 16, a bidirectional communication service matcher 17, a subscriber station controller 18 TV audio mode selection for transmission to the TV / stereo audio signal decoder 16 by the subscriber station control unit 18, which is applied to the subscriber station for an optical cable television having a subscriber station 4 having a And stereo audio channel selection data format, wherein D7 to D4 are control-allocated. A data format structure. ※ Note: The disclosure is based on the initial application.