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    • 1. 发明申请
    • METHOD OF IMPROVING CHANNEL SWITCHING SPEED IN DIGITAL TELEVISION RECEIVER AND THE DIGITAL TELEVISION RECEIVER
    • 数字电视接收机和数字电视接收机改进频道切换速度的方法
    • US20080172710A1
    • 2008-07-17
    • US11778683
    • 2007-07-17
    • Hee-beom KANGKang-wook CHUNChoon-sik JUNG
    • Hee-beom KANGKang-wook CHUNChoon-sik JUNG
    • H04N7/24
    • H04N21/2368H04N21/4341H04N21/4384H04N21/472H04N21/8106
    • Provided is a method of improving a channel switching speed in a digital television (TV) receiver. The method includes: generating transport stream packets by channel tuning and demodulating a broadcasting signal of a channel selected by the channel change instruction; outputting the transport stream packets before completion of tuning and demodulating of the broadcast signal; and generating video and/or audio data by demultiplexing and decoding the outputted transport stream packets. In addition, a digital TV receiver applying the improvement of the channel switching speed is provided. The digital TV receiver includes a tuning and demodulating unit generating transport stream packets by tuning and demodulating a broadcasting signal of a broadcasting channel selected by a channel change instruction and outputting the transport stream packets before completion of the tuning and demodulation of the transport stream packets. The digital TV receiver starts screen mute in response to the channel change instruction and terminates the screen mute when a normal image display is possible by using the transport stream packets output from the tuning and demodulating unit. Therefore, the channel switching speed increases as compared with a case where the improvement of the channel switching speed is attempted by using the transport stream packets.
    • 提供了一种提高数字电视(TV)接收机中的信道切换速度的方法。 该方法包括:通过信道调谐生成传输流分组并解调由信道改变指令选择的信道的广播信号; 在完成调谐和解调广播信号之前输出传输流分组; 以及通过对所输出的传输流分组进行解复用和解码来生成视频和/或音频数据。 此外,提供了应用提高频道切换速度的数字电视接收机。 数字电视接收机包括调谐和解调单元,其通过调谐和解调由频道改变指令选择的广播频道的广播信号来产生传输流分组,并在传输流分组的调谐和解调完成之前输出传输流分组。 数字电视接收机响应于信道改变指令开始屏幕静音,并且当通过使用从调谐和解调单元输出的传输流分组可以进行正常图像显示时终止屏幕静音。 因此,与通过使用传输流分组尝试改进信道切换速度的情况相比,信道切换速度增加。