-
Patent Agency Ranking
公开(公告)号：US3875450A
公开(公告)日：1975-04-01
申请号：US33553773
申请日：1973-02-26
Applicant: RCA CORP
Inventor： THOMPSON ROGER DUNWOODY
CPC classification number: H04N9/24 , H01J29/32 , H01J31/20 , H01J2231/121
Abstract: A cathode-ray tube, such as a color television picture tube of the feedback or sensing type including a viewing screen comprising an array of different color light-emitting phosphor strips, and indexing means comprising a periodic series of spaced indexing strip-like areas extending parallel to the phosphor strips. The elements of one of the indexing strip-like areas or the spaces therebetween alternate in width across the screen between two different values. The elements of the other of the indexing strip-like areas and the spaces therebetween are of substantially equal width. In operation, beam-produced control signals from the indexing strip-like areas are processed to produce a periodic signal wave, which is used to synchronize the application of color signals to the beam with the instantaneous position of the beam on the screen.
Abstract translation: 一种阴极射线管，例如反馈或感测类型的彩色电视显像管，其包括包括不同颜色的发光荧光带的阵列的观察屏幕，以及分度装置，其包括周期性的一系列间隔开的分度带状区域 平行于荧光条。 索引条状区域之一或其间的空间的元素在两个不同值之间跨越屏幕的宽度交替。 分度条状区域中的另一个的元件和它们之间的间隔具有基本相等的宽度。 在操作中，来自分度条状区域的光束产生的控制信号被处理以产生周期性信号波，其用于使得在屏幕上的光束的瞬时位置使颜色信号与光束的应用同步。
-
公开(公告)号：FR2463540A1
公开(公告)日：1981-02-20
申请号：FR8016986
申请日：1980-07-31
Applicant: RCA CORP
Inventor： GIBSON WALTER GOLD , THOMPSON ROGER DUNWOODY
Abstract: A comb filter apparatus is provided with means for equalizing the delayed and undelayed signal levels at the inputs to the adding or subtracting matrix, whereby maximum cancellation and reinforcement of the undesired and desired signals is effected. An input signal is coupled to an additive or subtractive matrix by way of an undelayed signal path and a delayed signal path. The delayed and undelayed signals at the inputs to the matrix are each coupled to a detector by way of a bandpass filter, which pass frequencies at which the combing of the signal is most critical. The detectors detect the levels of the input signals and apply the detected levels as two inputs to a difference circuit. The two signal levels are compared in the difference circuit to develop a gain control signal. The gain control signal is utilized to control the gain of a gain controllable stage which is coupled in series with one of the signal paths thereby equalizing the levels of the input signals to the combining matrix.
-
-
公开(公告)号：DE1243715B
公开(公告)日：1967-07-06
申请号：DER0038327
申请日：1964-07-09
Applicant: RCA CORP
Inventor： THOMPSON ROGER DUNWOODY , LAW HAROLD BELL
-
公开(公告)号：DE3029342A1
公开(公告)日：1981-02-19
申请号：DE3029342
申请日：1980-08-01
Applicant: RCA CORP
Inventor： GIBSON WALTER GOLD , THOMPSON ROGER DUNWOODY
Abstract: A comb filter apparatus is provided with means for equalizing the delayed and undelayed signal levels at the inputs to the adding or subtracting matrix, whereby maximum cancellation and reinforcement of the undesired and desired signals is effected. An input signal is coupled to an additive or subtractive matrix by way of an undelayed signal path and a delayed signal path. The delayed and undelayed signals at the inputs to the matrix are each coupled to a detector by way of a bandpass filter, which pass frequencies at which the combing of the signal is most critical. The detectors detect the levels of the input signals and apply the detected levels as two inputs to a difference circuit. The two signal levels are compared in the difference circuit to develop a gain control signal. The gain control signal is utilized to control the gain of a gain controllable stage which is coupled in series with one of the signal paths thereby equalizing the levels of the input signals to the combining matrix.
-
-
-
-
Search Results
5
records
(took 0.021 seconds)
