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热词
    • 8. 发明授权
    • Multimedia television receiver and method of booting the same
    • 多媒体电视接收机及其引导方法
    • US5838383A
    • 1998-11-17
    • US522486
    • 1995-08-31
    • Hiroyuki ChimotoSeijiro YasukiShigeru Tashiro
    • Hiroyuki ChimotoSeijiro YasukiShigeru Tashiro
    • H04L27/00H04N5/00H04N5/44H04N5/455H04N7/00H04N7/10H04N7/173H04N7/14
    • H04N7/17318H04L27/00H04N21/4113H04N21/4432H04N21/4622H04N5/4401H04N5/455H04N7/007H04N7/10
    • An NTSC tuner, an ISDB tuner, a CATV tuner, and a CATV modulator are connected to an analog switch box. Demodulation sections, an A/D, clock-reproducing section, and a modulation section are connected between the analog switch box a bus. MPEG2 video decoder sections, an MPEG2 audio decoder sections, an NTSC/EDTV horizontal decoder section, an EDTV vertical decoder section, an MPEG2 video encoder section, and an MPEG2 audio encoder section are connected between the bus and a bus. An audio amplifier, a graphics controller, and A/D conversion sections are connected the bus. The switch box and the buses are connected to a bus controller, which is connected to a CPU, a memory, and a remote-control I/F. These modules are selectively used to receive and process digital broadcasting signals, digital CATV signals or NTSC broadcasting signals. Even while the CPU is performing bootstrap processing immediately after the power switch of the television receiver is turned on, a DMA device is initialized, causing a monitor to display an image being received, no matter whether an operating system has been activated or not.
    • NTSC调谐器,ISDB调谐器,CATV调谐器和CATV调制器连接到模拟开关盒。 解调部分,A / D,时钟再现部分和调制部分连接在模拟开关盒的总线之间。 MPEG2视频解码器部分,MPEG2音频解码器部分,NTSC / EDTV水平解码器部分,EDTV垂直解码器部分,MPEG2视频编码器部分和MPEG2音频编码器部分连接在总线和总线之间。 音频放大器,图形控制器和A / D转换部分连接总线。 开关盒和总线连接到总线控制器,该总线控制器连接到CPU,存储器和远程控制I / F。 这些模块有选择地用于接收和处理数字广播信号,数字CATV信号或NTSC广播信号。 即使CPU在电视接收机的电源切换开启之后立即执行自举处理,也不管操作系统是否被激活,DMA设备被初始化,使得监视器显示正在接收的图像。