公开(公告)号：GB2151110A

公开(公告)日：1985-07-10

申请号：GB8430686

申请日：1984-12-05

Applicant: RCA CORP

Inventor： HURST ROBERT NORMAN ,  DISCHERT ROBERT ADAMS

IPC: H04N9/68 ,  H04N9/64 ,  H04N9/77

Abstract: An apparatus for correcting errors in color signal transitions includes a signal scaling device and a signal mixing device. A wide bandwidth luminance signal is applied to the signal scaling device which develops a limiting signal for a particular narrow bandwidth color difference or primary color signal. This limiting signal is mixed with its associated color difference or primary color signal by the signal mixing device. The output of the signal mixing device is a color difference or primary color signal that has amplitude values less than or equal to the amplitude values of the limit signal.

公开(公告)号：DE3444399A1

公开(公告)日：1985-06-13

申请号：DE3444399

申请日：1984-12-05

Applicant: RCA CORP

Inventor： HURST ROBERT NORMAN ,  DISCHERT ROBERT ADAMS

IPC: H04N9/68 ,  H04N9/64 ,  H04N9/77 ,  H04N9/535

Abstract: An apparatus for correcting errors in color signal transitions includes a signal scaling device and a signal mixing device. A wide bandwidth luminance signal is applied to the signal scaling device which develops a limiting signal for a particular narrow bandwidth color difference or primary color signal. This limiting signal is mixed with its associated color difference or primary color signal by the signal mixing device. The output of the signal mixing device is a color difference or primary color signal that has amplitude values less than or equal to the amplitude values of the limit signal.

公开(公告)号：GB2128441A

公开(公告)日：1984-04-26

申请号：GB8325248

申请日：1983-09-21

Applicant: RCA CORP

Inventor： DISCHERT ROBERT ADAMS ,  MEISE WILLIAM HARRY

IPC: H04L25/08 ,  H04B14/04 ,  H04L25/04 ,  H04N7/24 ,  H04N5/44

Abstract: A digital signal coring circuit removes from a stream of incoming digital data words low-valued variations lying between upper and lower threshold reference values. Upper and lower threshold values are adjusted in response to the value of the outgoing cored digital data words so that such low-valued variations are removed over the entire range of values of the digital data words, and not merely around a baseline value.

公开(公告)号：DE3241204A1

公开(公告)日：1983-05-19

申请号：DE3241204

申请日：1982-11-08

Applicant: RCA CORP

Inventor： DISCHERT ROBERT ADAMS ,  WALTER JAMES MORGAN

IPC: G06F1/035 ,  G06F7/52 ,  H03G3/00 ,  G06F13/06 ,  G11C17/00 ,  H04N5/22 ,  H04N5/14

Abstract: A high speed multiplier, such as for video signals features cascaded ROMs. Each ROM is divided into pages, and each page contains different multiplying coefficients. Different significant bits of a control signal are applied to each ROM to select a page for processing the video signal.

公开(公告)号：DE3228597A1

公开(公告)日：1983-02-17

申请号：DE3228597

申请日：1982-07-30

Applicant: RCA CORP

Inventor： OAKLEY CHARLES BURKHARDT ,  DISCHERT ROBERT ADAMS

IPC: H04N7/015 ,  H04N7/08 ,  H04N7/12 ,  H04N11/12 ,  H04N11/24 ,  H04N9/02 ,  H04N7/18 ,  H04N3/34

Abstract: A television arrangement generates signals from independent pairs of adjacent lines. The signals are separately summed and differenced to produce S and DELTA signals. The S signal is representative of the luminance of a scan between the original scans, and the DELTA represents vertical resolution. The signals are transmitted to a monitor for generating a high-vertical-resolution picture. Where the display is a color TV receiver, the DELTA signal may be buried within the chroma channel by frequency interleaving with the DELTA signal occuring only in locations representing high-frequency vertical information. The buried DELTA signal is invisible on a conventional receiver. Other independent data may be coupled through the chroma channel by frequency interleaving.

公开(公告)号：FR2510853A1

公开(公告)日：1983-02-04

申请号：FR8213418

申请日：1982-07-30

Applicant: RCA CORP

Inventor： OAKLEY CHARLES BURKHARDT ,  DISCHERT ROBERT ADAMS

IPC: H04N7/015 ,  H04N7/08 ,  H04N7/12 ,  H04N11/12 ,  H04N11/24 ,  H04N7/00 ,  H04N3/30

Abstract: A television arrangement generates signals from independent pairs of adjacent lines. The signals are separately summed and differenced to produce S and DELTA signals. The S signal is representative of the luminance of a scan between the original scans, and the DELTA represents vertical resolution. The signals are transmitted to a monitor for generating a high-vertical-resolution picture. Where the display is a color TV receiver, the DELTA signal may be buried within the chroma channel by frequency interleaving with the DELTA signal occuring only in locations representing high-frequency vertical information. The buried DELTA signal is invisible on a conventional receiver. Other independent data may be coupled through the chroma channel by frequency interleaving.

公开(公告)号：IT8222649D0

公开(公告)日：1982-07-29

申请号：IT2264982

申请日：1982-07-29

Applicant: RCA CORP

Inventor： OAKLEY CHARLES BURKHARDT ,  DISCHERT ROBERT ADAMS

IPC: H04N7/015 ,  H04N7/08 ,  H04N7/12 ,  H04N11/12 ,  H04N11/24 ,  H04N

Abstract: A television arrangement generates signals from independent pairs of adjacent lines. The signals are separately summed and differenced to produce S and DELTA signals. The S signal is representative of the luminance of a scan between the original scans, and the DELTA represents vertical resolution. The signals are transmitted to a monitor for generating a high-vertical-resolution picture. Where the display is a color TV receiver, the DELTA signal may be buried within the chroma channel by frequency interleaving with the DELTA signal occuring only in locations representing high-frequency vertical information. The buried DELTA signal is invisible on a conventional receiver. Other independent data may be coupled through the chroma channel by frequency interleaving.

公开(公告)号：IT8222503D0

公开(公告)日：1982-07-21

申请号：IT2250382

申请日：1982-07-21

Applicant: RCA CORP

Inventor： DISCHERT ROBERT ADAMS

IPC: H03M7/02 ,  G06F1/03 ,  G06F5/00 ,  H04N5/14 ,  H04N7/12 ,  G06F

Abstract: A digital signal processor uses a RAM for signal processing. This allows the transfer function to be easily changed by either hardwired circuitry or a microprocessor. Two RAMs per channel can be used, one processing the signal, while the other has its transfer function changed. The operations of the RAMs can be changed during a portion of the input signal, e.g. blanking times, when the switch over is not objectionable.

公开(公告)号：IT8219014D0

公开(公告)日：1982-01-07

申请号：IT1901482

申请日：1982-01-07

Applicant: RCA CORP

Inventor： DISCHERT ROBERT ADAMS ,  REITMEIER GLENN ARTHUR

IPC: H04N11/04 ,  H04N9/64 ,  H04N

Abstract: In a standard NTSC composite video signal, the peak excursion of the luminance plus chrominance signal for certain saturated colors exceeds the peak excursion of the white-representative luminance alone. When digitized, the signal is subject to quantizing noise. The effective spectial distribution of the quantizing noise is improved by reducing the amplitude of the chrominance signal so that the peak excursion of luminance plus chrominance for saturated colors does not substantially exceed the peak amplitude of white-representative luminance.

公开(公告)号：DE3104439A1

公开(公告)日：1982-01-07

申请号：DE3104439

申请日：1981-02-09

Applicant: RCA CORP

Inventor： DISCHERT ROBERT ADAMS ,  REITMEIER GLENN ARTHUR

IPC: H04N7/46 ,  H04N7/12 ,  H04B1/66