公开(公告)号：US3673320A

公开(公告)日：1972-06-27

申请号：US3673320D

申请日：1971-03-08

Applicant: RCA CORP

Inventor： CARNT PETER SWIFT ,  SCHIESS GEORGE

IPC: H04N9/00 ,  H04N9/44 ,  H04N9/455 ,  H04N9/64 ,  H04N9/68 ,  H04N9/46

CPC classification number: H04N9/44 ,  H04N9/455

Abstract: A color reference signal is inserted during the vertical blanking interval of a transmitted television waveform, for utilization by the described apparatus in automatically setting the hue and saturation of the diaplay of an NTSC or PAL receiver. The apparatus responds to the transmitted burst signal to lock the frequency of the sub-carrier oscillator of the receiver and to the transmitted reference signal to adjust the phase of its oscillations.

Abstract translation: 在发送的电视波形的垂直消隐间隔期间插入彩色参考信号，以供所述设备在自动设置NTSC或PAL接收机的信号的色调和饱和度的情况下使用。 该装置响应所发送的突发信号以锁定接收机的副载波振荡器的频率和发送的参考信号以调整其振荡的相位。

公开(公告)号：US3567862A

公开(公告)日：1971-03-02

申请号：US3567862D

申请日：1968-02-19

Applicant: RCA CORP

Inventor： CARNT PETER SWIFT ,  BART THEODORE ERNEST

IPC: H04N9/79 ,  H01M2/14 ,  H04N11/16 ,  H04N17/02 ,  H04N7/02

CPC classification number: H04N11/16 ,  H01M2/14

Abstract: Apparatus and methods for the selective identification and display of four unique fields in the PAL system. Trigger pulses are generated to enable selective display by a waveform monitor of the vertical blanking interval waveforms of any desired field in the four field sequence. Pursuant to a first embodiment, particularly useful where there is available from equipment being monitored (half line frequency) master binary output keyed to the burst phase alternation as well as sync pulse outputs, the trigger pulse generation is achieved by apparatus including coincidence circuits responding to sync signals and master binary waveforms. In accordance with a further embodiment, of more universal applicability, the trigger pulse generating apparatus requires only a composite video signal input. In the latter embodiment, facilities are provided for simultaneously displaying the four unique vertical interval waveforms, one above the other, in a predetermined position sequence. The latter embodiment further provides facilities for determining the field phase coincidence of differently sourced PAL signals.

公开(公告)号：US3461226A

公开(公告)日：1969-08-12

申请号：US3461226D

申请日：1965-10-22

Applicant: RCA CORP

Inventor： CARNT PETER SWIFT

IPC: H04N9/89 ,  H04N11/14 ,  H04N5/38 ,  H04N1/46 ,  H04N9/00

CPC classification number: H04N11/14 ,  H04N9/89

公开(公告)号：US3553357A

公开(公告)日：1971-01-05

申请号：US3553357D

申请日：1968-02-01

Applicant: RCA CORP

Inventor： CARNT PETER SWIFT

IPC: H04N9/465 ,  H04N9/47 ,  H04N9/44 ,  H04N9/32

CPC classification number: H04N9/465 ,  H04N9/47

Abstract: Identification and control circuitry for establishing the correct mode of line to line switching in a PAL color television decoder. A phase detector for APC control of the receiver''s reference color oscillator develops a half line frequency square wave in an auxiliary output circuit in response to line to line burst phase alternations. Derived square wave is compared in phase with output of switch-driving flip-flop circuit in a second phase detector to develop a DC control voltage of a first value when receiver switching mode is correct, and of a second value when switching mode is incorrect. Per one disclosed control technique, a resetting field frequency trigger is passed to the flip-flop circuit when control voltage value signifies incorrect switching. Per another disclosed control technique, flip-flop circuit is disabled when control voltage value signifies incorrect switching; restart and turnoff continues until flipflop restarts in correct mode. Application of control techniques to SECAM receiver switching is further disclosed.

公开(公告)号：US3538244A

公开(公告)日：1970-11-03

申请号：US3538244D

申请日：1967-10-19

Applicant: RCA CORP

Inventor： CARNT PETER SWIFT ,  BART THEODORE ERNEST

IPC: H04N9/465 ,  H04N9/873 ,  H04N9/89 ,  H04N9/46

CPC classification number: H04N9/873 ,  H04N9/465 ,  H04N9/89