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    • 4. 发明授权
    • Sync signal detecting device
    • 同步信号检测装置
    • US4747116A
    • 1988-05-24
    • US842582
    • 1986-03-21
    • Hiroaki YajimaYouichirou Tsuda
    • Hiroaki YajimaYouichirou Tsuda
    • H04N5/85G11B20/00H04L7/04H04N5/93H04L7/00
    • H04L7/042H04L7/041
    • A sync signal detecting device includes a circuit for generating a sync signal pattern corresponding to an expected sync signal pattern contained in a digital signal, a circuit for comparing the digital signal with the sync signal pattern to detect a sync signal in the digital signal, a circuit for detecting errors in the digital signal, and a counter for counting the errors thus detected. A sync detection signal is outputted when, where no error is detected, the sync pattern is detected, and when, where errors are detected, the number of errors detected is a predetermined value or less and the part of the digital signal which is not coincident with the sync signal pattern is the part where the errors have been detected.
    • 同步信号检测装置包括用于产生与包含在数字信号中的预期同步信号模式相对应的同步信号模式的电路,用于将数字信号与同步信号模式进行比较的电路,以检测数字信号中的同步信号; 用于检测数字信号中的错误的电路,以及用于对所检测到的误差进行计数的计数器。 当检测不到错误的同时检测信号时,输出同步检测信号,检测到错误时,检测出的错误数是预定值以下,并且数字信号不一致的部分 同步信号模式是检测到错误的部分。