公开(公告)号：US4709408A

公开(公告)日：1987-11-24

申请号：US760984

申请日：1985-07-31

申请人： Tetsuro Itakura ,  Yoshitaka Kasagi ,  Mikio Koyama ,  Chikashi Nakagawara

发明人： Tetsuro Itakura ,  Yoshitaka Kasagi ,  Mikio Koyama ,  Chikashi Nakagawara

IPC分类号： H04N5/455 ,  H03J7/04 ,  H04N5/04 ,  H04N5/50 ,  H04B1/16

CPC分类号： H04N5/4446 ,  H03J7/04 ,  H04N5/50

摘要： A circuit for processing an intermediate frequency signal comprises a limiter connected to receive the intermediate frequency signal to generate a carrier component of the intermediate frequency signal as an output, a phase locked loop circuit connected to receive one of the intermediate frequency signal and the carrier component from the limiter to generate an output signal which is phase-locked onto the carrier component of the intermediate frequency signal, a synchronous detector for synchronously detecting the intermediate frequency signal depended on the output signal from the phase locked loop circuit, and an automatic frequency circuit connected to receive the carrier component from the limiter and the output signal from the phase locked loop circuit to generate an output signal, as an automatic frequency tuning signal, in response to a frequency difference therebetween.

摘要翻译： 一种用于处理中频信号的电路包括限幅器，其连接以接收中频信号以产生作为输出的中频信号的载波分量;锁相环电路，被连接以接收中频信号和载波分量之一 从限幅器产生相位锁定在中频信号的载波分量上的输出信号，同步检波器，用于根据来自锁相环电路的输出信号同步检测中频信号;以及自动频率电路 连接以从限幅器接收载波分量和来自锁相环电路的输出信号，以响应于它们之间的频率差而产生作为自动频率调谐信号的输出信号。

公开(公告)号：US4546377A

公开(公告)日：1985-10-08

申请号：US500864

申请日：1983-06-03

申请人： Yoshitaka Kasagi ,  Tokio Aketagawa

发明人： Yoshitaka Kasagi ,  Tokio Aketagawa

IPC分类号： H03C3/38 ,  H03H11/16 ,  H04N9/45 ,  H04N9/64 ,  H04N9/66 ,  H04N9/32

CPC分类号： H04N9/642

摘要： A circuit arrangement for processing color television signals incorporated in a multi-mode type color TV receiver which is capable of receiving TV signals processed by different television systems such as NTSC and PAL systems. The circuit arrangement for processing color television signals comprises a first color demodulator for demodulating a composite color signal by a first color subcarrier having a first phase with respect to a first demodulation axis, a second color demodulator for demodulating said composite color signal by a second color subcarrier having a second phase with respect to a second demodulation axis, a matrix circuit for producing a color demodulation signal having a third phase with respect to a third demodulating axis by vector-synthesizing the color demodulation signals delivered from said first and second color demodulators; and means for generating a correction vector signal so as to correct said third phase of the color demodulation signal produced by said matrix circuit in such a manner that said correction vector signal is added to said color demodulation signal of the matrix circuit so as to shift said third phase of the color demodulation signal with respect to said third demodulation axis.

公开(公告)号：US5351082A

公开(公告)日：1994-09-27

申请号：US58036

申请日：1993-05-07

申请人： Yoshitaka Kasagi

发明人： Yoshitaka Kasagi

IPC分类号： G09G5/36 ,  G11C7/16 ,  H01L27/148 ,  H04N1/393 ,  H04N5/262 ,  H04N5/335 ,  H04N5/341 ,  H04N5/369 ,  H04N5/372 ,  H04N5/3722 ,  H04N5/376 ,  H04N5/378 ,  H04N3/14

CPC分类号： H04N5/23296 ,  G11C7/16 ,  H04N3/1531 ,  H04N3/1562 ,  H04N3/1575 ,  H04N5/2628

摘要： A signal converting device receives input data obtained by continuously scanning data for a predetermined period along one of i axes X1, X2 . . . Xi of an imaginary i-dimensional spatial coordinate system, where the data exists in given space-time regions a1, a2 . . . ai extending along these axes. The device processes the data in a given sub time-space region Nj included in any time-space region aj (where j=1, 2 . . . i) at a magnification specific to a given sub time-space region Mj (1.ltoreq.j.ltoreq.i). As a result, the device outputs new data existing in the sub time-space region Mj. The region Mj is identical to the sub time-space region Nj, or exists outside the time-space region aj. The device has an input data item converter that converts the input data items so that the product of output data items existing in small regions Lm of ordinates representing spatial positions in the sub time-space region Mj extending along at least one axis Xj is nearly equal to the product of the corresponding input data items existing in small regions Ln or ordinates representing spatial positions or is nearly equal to K times a given constant other than zero, and for converting data items existing in one axis while data items on any other axis remain in a fixed state.

摘要翻译： 信号转换装置接收通过沿i轴X1，X2中的一个连续扫描预定周期的数据而获得的输入数据。 。 。 Xi是虚拟的i维空间坐标系，其中数据存在于给定的时空区域a1，a2中。 。 。 ai沿着这些轴延伸。 该设备以特定于给定子时空区域Mj（1 1）的放大倍率处理包括在任何时空区域aj（其中j = 1,2，... i）中的给定子时空区域Nj中的数据， / = j