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Digital television and method of automatic switching channel

A digital TV and channel technology, applied in the TV field, can solve problems such as audience confusion

Inactive Publication Date: 2004-06-23
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The television according to the background art ends the SD broadcast program watched by the viewer at the beginning of the HD broadcast, and then automatically switches to another channel, so that the viewer may feel confused due to the sudden change of the channel

Method used

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  • Digital television and method of automatic switching channel
  • Digital television and method of automatic switching channel
  • Digital television and method of automatic switching channel

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0051] image 3 shows a flowchart of a method for controlling automatic channel switching according to a first embodiment of the present invention, Figure 4 A timing diagram of the automatic channel switching process of the present invention is shown.

[0052] refer to image 3 , when the viewer selects a specific channel (SD broadcast) from the broadcast signal received by the antenna to specify the program the viewer wants (such as the program "ABC KIDS"), the signal separation unit 21 separates the transport stream TS into video information , audio information and additional information. The signal separation unit 21 then outputs the video information and audio information to the video / audio decoder 25 and outputs the additional information to the section filter 22 . The video information and audio information pass through the video / audio decoder 25 and the video / audio processing unit 28, and then are realized as video and audio by the display unit 29 and the speaker 30...

no. 2 example

[0062] Figure 5 A flow chart of the method for controlling automatic channel switching according to the second embodiment of the present invention is shown.

[0063] refer to Figure 5 , when the viewer selects a specific channel (SD broadcast) from the broadcast signal received by the antenna to specify the program the viewer wants, the signal separation unit 21 separates the transport stream TS into video information, audio information and additional information. The signal separation unit 21 then outputs the video information and audio information to the video / audio decoder 25 and outputs the additional information to the section filter 22 . The additional information input to the segment filter 22 is analyzed into a set format and stored in the database 24 (S51).

[0064] Subsequently, the control unit 27 searches the database 24 to analyze the PSI of the current channel program watched by the viewer, thereby determining whether there is a connection descriptor in the P...

no. 3 example

[0074] Fig. 6 shows a flowchart of a method for controlling automatic channel switching according to a third embodiment of the present invention.

[0075] Referring to Fig. 6, when the viewer selects a specific channel (SD broadcast) from the broadcast signal received by the antenna to specify the program the viewer wants, the signal separation unit 21 separates the transport stream TS into video information, audio information and additional information . The signal separation unit 21 then outputs the video information and audio information to the video / audio decoder 25 and outputs the additional information to the section filter 22 . The additional information input to the segment filter 22 is analyzed into a set format and stored in the database 24 (S51).

[0076] Subsequently, the control unit 27 searches the database 24 to analyze the PSI of the current channel program watched by the viewer, thereby determining whether there is a connection descriptor in the PSI (S52). I...

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Abstract

A digital TV and a method of switching a channel automatically thereof provides a viewer with advance notice of an automatic channel switch using linkage descriptor information on HD broadcasting. Providing the viewer with notice of the switched channel reduces viewer confusion. The method includes the steps of determining whether a linkage descriptor is included in additional information regarding a broadcast program whether the broadcast program regardless of whether the broadcast program is selected by a viewer, checking the remaining time of the broadcast program if the linkage descriptor is included in the additional information, displaying a channel switch notice message on a screen, determining whether or not the broadcast program has ended, switching a channel of the broadcast program to a designated channel when the broadcast program ends, and displaying a channel switch confirmation message on the screen.

Description

[0001] This application claims priority from Korean Application No. P2002-78822 filed on Dec. 11, 2002, which is incorporated herein by reference. technical field [0002] The invention relates to television, in particular to a digital television and a method for automatically switching channels thereof. Background technique [0003] In general, digital broadcasting transmits additional data along with video and audio data to provide viewers with various services. However, the bandwidth of digital broadcasting varies from region to region, and there are bandwidth restrictions in use. Therefore, in order to transmit both SD (Standard Definition) broadcasts and HD (High Definition) broadcasts in a limited bandwidth (for example, 7 MHz in Australia), it is necessary to terminate the same time zone as HD broadcasts in the time zone in which HD broadcasts are transmitted. SD broadcasting with large amount of data. [0004] If several SD broadcasts are terminated while HD broadc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/00H04N5/44H04N5/445H04N5/50
CPCH04N21/4882H04N21/4383H04N5/50H04N5/4401H04N21/4332H04N21/485H04N21/4348H04N21/434H04N21/4345H04N21/426H04N7/015H04N21/43
Inventor 申洙炫
Owner LG ELECTRONICS INC