公开(公告)号：US3308328A

公开(公告)日：1967-03-07

申请号：US40104364

申请日：1964-10-02

Applicant: ZENITH RADIO CORP

Inventor： RENNICK JOHN L

IPC: H01J29/70

CPC classification number: H01J29/703

公开(公告)号：US3133148A

公开(公告)日：1964-05-12

申请号：US21576151

申请日：1951-03-15

Applicant: ZENITH RADIO CORP

Inventor： RENNICK JOHN L

IPC: H04N11/12

CPC classification number: H04N11/12

公开(公告)号：US2924650A

公开(公告)日：1960-02-09

申请号：US49017455

申请日：1955-02-24

Applicant: ZENITH RADIO CORP

Inventor： RENNICK JOHN L

IPC: H04N9/72

CPC classification number: H04N9/72

公开(公告)号：US2861210A

公开(公告)日：1958-11-18

申请号：US43273254

申请日：1954-05-27

Applicant: ZENITH RADIO CORP

Inventor： RENNICK JOHN L

IPC: H04N9/26

CPC classification number: H04N9/26

公开(公告)号：US2846499A

公开(公告)日：1958-08-05

申请号：US31450652

申请日：1952-10-13

Applicant: ZENITH RADIO CORP

Inventor： HEUER CHARLES H ,  RENNICK JOHN L

IPC: H04N11/14

CPC classification number: H04N11/14

公开(公告)号：US2823254A

公开(公告)日：1958-02-11

申请号：US30089452

申请日：1952-07-25

Applicant: ZENITH RADIO CORP

Inventor： HEUER CHARLES H ,  RENNICK JOHN L

IPC: H04N11/14

CPC classification number: H04N11/146

公开(公告)号：US3911211A

公开(公告)日：1975-10-07

申请号：US46157374

申请日：1974-04-17

Applicant: ZENITH RADIO CORP

Inventor： RENNICK JOHN L

IPC: G11B7/09 ,  H04N5/76 ,  G11B17/00

CPC classification number: G11B7/0901 ,  H04N5/7605 ,  Y10S358/907

Abstract: An optical playback system for reading video discs with a laser beam has a radial servo including an arrangement for developing a correction signal representing the sense and extent of deviations of the reading beam from proper tracking relation to the storage track of the video disc. A driver responds to the correction signal and actuates a beam deflection mirror, displacing it in the proper sense and direction with respect to a reference position to maintain proper beam tracking. When stop frame operation is desired, a clamp is actuated once every revolution of the disc to supersede the correction signal and restore the beam deflecting mirror to its reference position as required to cause the beam to repeat its scan of a given convolution of the record track.

Abstract translation: 用于用激光束读取视频光盘的光学回放系统具有径向伺服系统，其包括用于形成校正信号的装置，该校正信号表示读取光束的偏差与视频盘的存储轨迹的适当跟踪关系的偏差的范围和程度。 驱动器响应于校正信号并致动光束偏转镜，使其相对于参考位置在适当的感测和方向上移位，以保持适当的光束跟踪。 当需要停止框架操作时，每转一圈驱动一个夹具，以取代校正信号，并根据需要将光束偏转镜恢复到其参考位置，以使光束重复扫描记录轨道的给定卷积 。

公开(公告)号：US3889288A

公开(公告)日：1975-06-10

申请号：US33684173

申请日：1973-02-28

Applicant: ZENITH RADIO CORP

Inventor： RENNICK JOHN L

IPC: H04N9/86 ,  H04N11/22 ,  H04N9/36

CPC classification number: H04N9/86 ,  H04N11/22

Abstract: An encoding and decoding system for color television signals wherein three color-difference signals representative of the color of a scene and a luminance signal representative of the brightness of the scene are symmetrically encoded as three-line sequential signals with relative amplitudes such that when the three sequential signals are matrixed in equal proportions a luminance signal is formed representative of the average luminance level of the picture over the preceding three lines. The symmetrical encoding of the color-difference signals eliminates the need for line identification and phase locking between the encoder and decoder switches, thereby resulting in substantial simplification.

Abstract translation: 用于彩色电视信号的编码和解码系统，其中表示场景的颜色的三个色差信号和表示场景的亮度的亮度信号被对称地编码为具有相对幅度的三行顺序信号，使得当三个 顺序信号以相等的比例进行矩阵化，形成的亮度信号代表前三行的图像的平均亮度水平。 色差信号的对称编码消除了对编码器和解码器开关之间的线路识别和相位锁定的需要，从而实质上简化了。

公开(公告)号：US3517116A

公开(公告)日：1970-06-23

申请号：US3517116D

申请日：1967-07-21

Applicant: ZENITH RADIO CORP

Inventor： RENNICK JOHN L

IPC: H04N11/20 ,  H04N5/02

CPC classification number: H04N11/20

公开(公告)号：US3470312A

公开(公告)日：1969-09-30

申请号：US3470312D

申请日：1966-11-07

Applicant: ZENITH RADIO CORP

Inventor： RENNICK JOHN L

IPC: H04N9/66 ,  H04N5/38 ,  H04N5/44

CPC classification number: H04N9/66