公开(公告)号：US3579225A

公开(公告)日：1971-05-18

申请号：US3579225D

申请日：1969-10-15

Applicant: RCA CORP

Inventor： CLARK ROBERT JOHN

IPC: G06F3/037 ,  G06F3/02 ,  G06F3/14

CPC classification number: G06F3/02

Abstract: The light sensed by a light ''''probe'''' or ''''pen'''' during each field displayed on a persistent screen causes a signal to be stored for a duration which is a fraction of the field time. The placing of the probe in a light sensing position causes a second signal of a duration at least equal to one field time to be stored and which starts at a time after the pen is placed in its light sensing position at which the next field starts. A circuit responsive to the concurrent presence of both stored signals produces an output pulse which may be employed to signal the computer associated with the light probe.

公开(公告)号：US3928845A

公开(公告)日：1975-12-23

申请号：US53161374

申请日：1974-12-11

Applicant: RCA CORP

Inventor： CLARK ROBERT JOHN

IPC: G09G5/26 ,  G06F3/14

CPC classification number: G09G5/26

Abstract: The versatility of a character generator system, suitable for use in a television broadcast controller, is enhanced by employing a read/write character generator memory of a given overall storage capacity, rather than a ROM, and organizing the memory to store symbols in any selected single one of a given number of different predetermined dot-matrix sizes. Logic means responsive to the selected dot-matrix size are provided for digitally generating symbols for display on a display device exhibiting a television raster scan employing the particular alphabet of symbols then stored in the memory in the selected dot-matrix size.

Abstract translation: 适用于电视广播控制器的字符发生器系统的多功能性通过采用给定总体存储容量而不是ROM的读/写字符发生器存储器来增强，并组织存储器以将符号存储在任何选定的 给定数量的不同预定点阵尺寸中的单个。 提供了响应于所选择的点阵尺寸的逻辑装置，用于数字地产生用于在显示装置上显示符号的符号，该显示装置呈现采用所选择的点阵尺寸存储在存储器中的符号的特定字母表的电视光栅扫描。

公开(公告)号：US3624634A

公开(公告)日：1971-11-30

申请号：US3624634D

申请日：1969-12-22

Applicant: RCA CORP

Inventor： CLARK ROBERT JOHN

IPC: G09G5/04 ,  G09G5/02 ,  G06F3/14

CPC classification number: G09G5/02

Abstract: A data source transmits data signals, which represent information to be displayed and the colors in which it is to be displayed, to a display means such as a kinescope. The colorindicating data signals are stored for one line time and the stored signals are employed to cause the display means to display the remaining data signals of the line in the color called for by the stored signal.

公开(公告)号：US3918039A

公开(公告)日：1975-11-04

申请号：US52178474

申请日：1974-11-07

Applicant: RCA CORP

Inventor： CLARK ROBERT JOHN

IPC: G09G5/24 ,  G06F3/14

CPC classification number: G09G5/24

Abstract: A graphic symbol, completely digital, video signal generator, suitable for use in a television broadcast display control system, derives high resolution (50 nanosecond video dot period) symbols with edging employing off-the-shelf low resolution (200 nanosecond period) shift registers. This is accomplished by employing four different phase clocks each having a low repetition rate (5 MHz). Separate independent edge key and monochrome video signals are derived as the symbol video output of the generator.

Abstract translation: 一种适用于电视广播显示控制系统的图形符号，全数字视频信号发生器，采用现成的低分辨率（200纳秒周期）移位寄存器的高分辨率（50纳秒视频点周期）符号 。 这通过采用具有低重复率（5MHz）的四个不同相位时钟来实现。 独立的独立边缘键和单色视频信号被导出为发生器的符号视频输出。

公开(公告)号：US3426344A

公开(公告)日：1969-02-04

申请号：US3426344D

申请日：1966-03-23

Applicant: RCA CORP

Inventor： CLARK ROBERT JOHN

IPC: G09G5/22 ,  H01J29/70

CPC classification number: G09G5/222

公开(公告)号：US3422420A

公开(公告)日：1969-01-14

申请号：US3422420D

申请日：1966-03-23

Applicant: RCA CORP

Inventor： CLARK ROBERT JOHN

IPC: G09G5/34 ,  G08B23/00

CPC classification number: G09G5/343