利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.012 秒)

    Television receiver
    2.
    发明公开
    Television receiver 失效
    电视接收器

    公开(公告)号：EP0551151A1

    公开(公告)日：1993-07-14

    申请号：EP93200003.7

    申请日：1993-01-04

    申请人： PHILIPS ELECTRONICS UK LIMITED ,  Philips Electronics N.V.

    发明人： Kinghorn, John Ritchie, c/o Philips Semiconductors ,  Stevens, Jeremy Robin, c/o Philips Semiconductors ,  Tarrant, David Robert, c/o Philips Semiconductors

    IPC分类号： H04N7/00 ,  H04N7/087 ,  G09G1/16

    CPC分类号： H04N21/4888 ,  G09G5/222 ,  H04N5/44504 ,  H04N5/44513 ,  H04N7/0884 ,  H04N21/42204 ,  H04N21/4316 ,  H04N21/47

    摘要： The television receiver includes a teletext decoder having a page memory PM into which teletext data is read from a data acquisition circuit DAC via an interface circuit MIC under control of a microprocessor PRO. The microprocessor PRO is also used to control functions of the television receiver and to cause on-screen display messages to be produced. When an on-screen display message is to be produced the microprocessor sets a bit in the memory PM which causes a latch to be set which in turn causes a multiplexer MUX to apply data from an auxiliary memory APM to a character generator CG. When the on-screen display message is to be dispensed with the bit in the memory PM is reset causing the latch to be reset and the multiplexer MUX to apply data from the page memory PM to the character generator CG.
    This enables on-screen display messages to be applied to the character generator CG without losing any of the teletext data stored in the page memory PM.

    摘要翻译： 电视接收机包括具有页面存储器PM的图文电视解码器，在微处理器PRO的控制下，通过接口电路MIC从图像采集电路DAC读取图文电视数据。 微处理器PRO也用于控制电视接收机的功能并产生屏幕显示消息。 当要产生屏幕显示消息时，微处理器在存储器PM中设置一位，使得锁存器被置位，这又使多路复用器MUX将数据从辅助存储器APM施加到字符发生器CG。 当屏幕显示消息要被省略时，存储器PM中的位被复位，导致锁存器被复位，并且多路复用器MUX将来自页面存储器PM的数据施加到字符发生器CG。 这使得屏幕显示消息能够被应用到字符发生器CG，而不会丢失存储在页面存储器PM中的任何图文数据。