公开(公告)号：US3871019A

公开(公告)日：1975-03-11

申请号：US35089973

申请日：1973-04-13

Applicant: RCA CORP

Inventor： BINGHAM JOSEPH PETER

IPC: H04N11/04 ,  H04N9/81 ,  H04N9/86 ,  H04N11/18 ,  H04N11/22 ,  H04N9/02

CPC classification number: H04N9/86 ,  H04N9/81

Abstract: A line sequential color signal coding format for a limited bandwidth video recording system is disclosed which achieves improved vertical transient response during playback display. Spectrum interleaving is employed between the luminance signal and color difference chrominance signals during encoding, with the necessary signal separation during decoding being effected by comb filtering using delay lines. Prefiltering may be implemented during encoding to comb out crosstalk producing signals from the luminance and chrominance signal spectrums. To avoid contamination of the mixed high frequency luminance components in the decoder by the switched low frequency components, the composite signal may be fed through a high pass luminance filter in the decoder whose cutoff frequency is above that of a low pass filter in the encoder through which the switched, line sequential components are fed.

Abstract translation: 公开了一种用于有限带宽视频记录系统的线序彩色信号编码格式，其在回放显示期间实现了改进的垂直瞬态响应。 在编码期间，在亮度信号和色差色度信号之间采用频谱交织，在通过使用延迟线的梳状滤波实现解码期间的必要信号分离。 可以在编码期间实现预滤波，以梳理从亮度和色度信号频谱产生信号的串扰。

公开(公告)号：US3919714A

公开(公告)日：1975-11-11

申请号：US51649174

申请日：1974-10-21

Applicant: RCA CORP

Inventor： BINGHAM JOSEPH PETER

IPC: H04N5/208 ,  H04N9/77 ,  H04N9/535

CPC classification number: H04N9/77

Abstract: A signal delaying circuit is coupled to a source of television video signals. A plurality of signal coupling circuits are coupled to the signal delaying circuit for developing a plurality of delayed video signals. At least a first and a second of the delayed video signals, spaced apart in time by a time interval substantially equal to NT/2, where T is the period of a signal component of the video signals and N is an integer greater than one, are combined to form a combined signal. A bandwidth determining signal is derived from at least a third of the delayed video signals spaced in time between the first and second delayed video signals. A peak response determining signal is derived by further combining the combined signal and the bandwidth determining signal. The amplitude of the peak response determining signal is controlled as a function of a control signal. In illustrative embodiments the apparatus is utilized to provide automatic luminance channel peaking and automatic color or chroma control (ACC).

Abstract translation: 信号延迟电路耦合到电视视频信号源。 多个信号耦合电路耦合到信号延迟电路，用于显影多个延迟的视频信号。 至少第一和第二延迟视频信号的时间间隔大致等于NT / 2的时间间隔，其中T是视频信号的信号分量的周期，N是大于1的整数， 被组合以形成组合信号。 从第一和第二延迟视频信号之间的间隔时间延迟的视频信号的至少三分之一导出带宽确定信号。 通过进一步组合组合信号和带宽确定信号来导出峰值响应确定信号。 作为控制信号的函数控制峰值响应确定信号的振幅。 在说明性实施例中，该装置用于提供自动亮度通道峰化和自动颜色或色度控制（ACC）。