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    • 7. 发明授权
    • Circuit for converting a colour television time division multiplex
signal into simultaneous signals
    • 用于将彩色电视时分复用信号转换成同步信号的电路
    • US4730209A
    • 1988-03-08
    • US833632
    • 1986-02-27
    • Leendert J. Van De PolderLeonard J. M. Esser
    • Leendert J. Van De PolderLeonard J. M. Esser
    • H04N11/22H04N11/12
    • H04N11/22
    • A color television Y/U/V luminance-chrominance multiplex signal with signals which may or may not be compressed in time comprises for a television line the associated luminance information Y and half the chrominance information U or V. As a result the circuit should supply the chrominance information directly (U, V) and repeatedly (U', V') during a subsequent television line. To avoid the use of an accurate, expensive delay device having a line period delay, the circuit includes an input shift register (A) of the series-in, parallel-out type, which is coupled through an on-off switch circuit (B1, B2) to parallel inputs of two shift registers (C1, C2) of the parallel-in, series-out type. During a line blanking period (THB) writing is effected from the input shift register in the output shift registers and during two subsequent line scan periods (THS1, THS2) reading is effected consecutively therefrom. Reading may be effected in opposite phase if a repetition is to be effected after exactly one line period.
    • 具有可能或可能不被压缩的信号的彩色电视Y / U / V亮度色度多路复用信号包括对于电视线,相关联的亮度信息Y和色度信息U或V的一半。因此,电路应该提供 在随后的电视线中直接(U,V)和色度信息(U',V')。 为了避免使用具有线路周期延迟的精确,昂贵的延迟装置,电路包括串联并联输出型的输入移位寄存器(A),其通过开 - 关开关电路(B1 ,B2)到并联串联输出类型的两个移位寄存器(C1,C2)的并行输入。 在行消隐期间(THB)中,从输出移位寄存器中的输入移位寄存器进行写入,并且在两个后续行扫描周期(THS1,THS2)期间连续执行读取。 如果在完全一个行周期之后进行重复,则可以在相反的阶段进行读取。