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Apparatus and method for changing broadcasting channel in digital broadcasting receiver

A technology for digital broadcasting and broadcasting channels, which is applied in broadcasting information recording/accumulation, distribution switchgear, image communication, etc., and can solve the problems of image interruption and interruption of user viewing.

Inactive Publication Date: 2010-10-13
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, each time the user's viewing is interrupted due to image interruptions, such as blue screens, before viewing other broadcast channels

Method used

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  • Apparatus and method for changing broadcasting channel in digital broadcasting receiver
  • Apparatus and method for changing broadcasting channel in digital broadcasting receiver
  • Apparatus and method for changing broadcasting channel in digital broadcasting receiver

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Embodiment Construction

[0022] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of known functions and structures incorporated therein will be omitted when it would otherwise make the subject matter of the present invention unclear.

[0023] figure 1 is a block diagram of a DMB receiver according to an embodiment of the present invention. refer to figure 1 , the DMB receiver includes a bit deinterleaver 400 for deinterleaving the interleaved data bit by bit, and changing burst error bit cells into random errors, a Viterbi decoder 410 for bit by bit error correction from the bit deinterleave The deinterleaved data output by the interleaver 400, a byte deinterleaver 420 for deinterleaving the data output from the Viterbi decoder 410 byte by byte, and changing the byte unit of a burst error into a random error, RS A decoder 430 for error corr...

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Abstract

An apparatus and a method capable of receiving digital broadcasting without image discontinuity during channel switching. A digital multimedia broadcasting receiver buffers a previous channel while a new channel is buffered in a deinterleaver, thereby preventing image discontinuity during channel switching. The digital broadcasting receiver receives and deinterleaves broadcast data of a channel to be changed and stores the deinterleaved broadcast data in a buffer when a broadcast channel change is requested. The digital broadcasting receiver outputs and displays broadcast data of an initial channel stored in the buffer and stops output of the broadcast data of the initial channel and outputs the broadcast data of the channel to be changed, when the broadcast data of the channel to be changed are stored in the buffer by a predetermined buffering size.

Description

technical field [0001] The present invention relates generally to digital broadcasting, and more particularly, to an apparatus and method capable of receiving digital broadcasting without picture interruption during channel switching. Background technique [0002] Digital broadcasting, especially digital multimedia broadcasting (DMB) utilizing the System E scheme of the International Telecommunication Union (ITU), proposes convolutional interleaving / deinterleaving. According to convolutional interleaving, the DMB transmitter temporarily stores several input bits, delays the input bits for a predetermined period of time, and outputs the delayed input bits when transmitting broadcast data. Therefore, on input, the delayed and output bits are interleaved between two bits adjacent to each other. Therefore, the DMB transmitter obtains a data stream having a sequence different from an input sequence by interleaving, and transmits the interleaved data stream. [0003] The DMB rec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/173H04N5/445H04B1/16H04N5/44
CPCH04N21/4348H04N21/4384H04H60/27H04N21/4383H04N5/4401H04H20/26H04N21/44004H04N5/50H04N21/4882H04N21/426H04N7/00
Inventor 李敬恩李庆河
Owner SAMSUNG ELECTRONICS CO LTD