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公开(公告)号：GB2151110B
公开(公告)日：1987-10-14
申请号：GB8430686
申请日：1984-12-05
Applicant: RCA CORP
Inventor： HURST ROBERT NORMAN , DISCHERT ROBERT ADAMS
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.
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公开(公告)号：GB2155273B
公开(公告)日：1987-09-09
申请号：GB8504369
申请日：1985-02-20
Applicant: RCA CORP
Inventor： DISCHERT ROBERT ADAMS
Abstract: A color television camera includes imagers which produce signals representative of various colors of a scene. The signals are multiplexed to an analog-to-digital converter (ADC) for conversion to sequential digital video form for processing by a single-channel digital processor. In order to avoid loss of resolution, and to take full advantage of the speed of operation of the ADC, the imagers are clocked mutually out-of-phase so as to sequentially provide imager signals at a rate related to the multiplexer rate.
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公开(公告)号：FI863409A
公开(公告)日：1987-03-01
申请号：FI863409
申请日：1986-08-22
Applicant: RCA CORP
Inventor： JOSE DAVID LEE , TSOKAS SPYROS WILLIAM , DISCHERT ROBERT ADAMS
IPC: H04N5/46 , H04N20060101 , H04N3/223 , H04N5/222 , H04N7/00 , H04N7/01 , H04N7/015 , H04N9/64 , H04N11/00 , H04N11/06 , H04N11/20 , H04N
Abstract: A video display system for displaying a wide screen image having an aspect ratio, such as 5:3, greater than the standard, such as 4:3, aspect ratio of the images represented by conventional television video signals, is arranged for displaying such an image of standard aspect ratio without changing the width of the normal wide aspect raster of the display system. To this end the display system includes a signal processor which, in response to a video signal representative of a standard aspect ratio image, produces, for driving the wide aspect ratio display, a processed video signal the line periods of which each include not only the line synchronizing interval and active video interval but also a delay interval ('PAUSE') the effect of which is to determine the position of the displayed standard aspect ratio image within the width of the wide aspect ratio raster.
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公开(公告)号：FI863408A
公开(公告)日：1987-03-01
申请号：FI863408
申请日：1986-08-22
Applicant: RCA CORP
Inventor： DISCHERT ROBERT ADAMS , JOSE DAVID LEE , MOLES WARREN HUGH , WALTER JAMES MORGAN
Abstract: A wide aspect ratio television system includes memories (40,42,44) for storing and recovering a video input signal in response to read and write clock pulses, respectively. Write clock pulses are deleted (410, Figure 4) to compress edge regions of a wide aspect ratio input signal and read clock pulses are deleted (Figure 8) to restore the signal to its original aspect ratio. The pattern of deleted pulses is preferably altered (404) on a line-by-line basis to reduce visible artifacts of signal decimation. In dual mode receivers which may include provisions for controlling edge blanking or effecting edge interpolation, the pattern of deleted clock pulses may be selected as a function of the type of received signals.
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公开(公告)号：DK413086D0
公开(公告)日：1986-08-29
申请号：DK413086
申请日：1986-08-29
Applicant: RCA CORP
Inventor： JOSE DAVID LEE , TSOKAS SPYROS WILLIAM , DISCHERT ROBERT ADAMS
IPC: H04N5/46 , H04N20060101 , H04N3/223 , H04N5/222 , H04N7/00 , H04N7/01 , H04N7/015 , H04N9/64 , H04N11/00 , H04N11/06 , H04N11/20 , H04N
Abstract: A video display system for displaying a wide screen image having an aspect ratio, such as 5:3, greater than the standard, such as 4:3, aspect ratio of the images represented by conventional television video signals, is arranged for displaying such an image of standard aspect ratio without changing the width of the normal wide aspect raster of the display system. To this end the display system includes a signal processor which, in response to a video signal representative of a standard aspect ratio image, produces, for driving the wide aspect ratio display, a processed video signal the line periods of which each include not only the line synchronizing interval and active video interval but also a delay interval ('PAUSE') the effect of which is to determine the position of the displayed standard aspect ratio image within the width of the wide aspect ratio raster.
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Patent Agency Ranking
公开(公告)号：FI863408A0
公开(公告)日：1986-08-22
申请号：FI863408
申请日：1986-08-22
Applicant: RCA CORP
Inventor： DISCHERT ROBERT ADAMS , JOSE DAVID LEE , MOLES WARREN HUGH , WALTER JAMES MORGAN
Abstract: A wide aspect ratio television system includes memories (40,42,44) for storing and recovering a video input signal in response to read and write clock pulses, respectively. Write clock pulses are deleted (410, Figure 4) to compress edge regions of a wide aspect ratio input signal and read clock pulses are deleted (Figure 8) to restore the signal to its original aspect ratio. The pattern of deleted pulses is preferably altered (404) on a line-by-line basis to reduce visible artifacts of signal decimation. In dual mode receivers which may include provisions for controlling edge blanking or effecting edge interpolation, the pattern of deleted clock pulses may be selected as a function of the type of received signals.
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公开(公告)号：CA1188406A
公开(公告)日：1985-06-04
申请号：CA406241
申请日：1982-06-29
Applicant: RCA CORP
Inventor： DISCHERT ROBERT ADAMS
Abstract: An encoding apparatus samples the luminance component of a video signal at a rate sufficient to avoid aliasing. Wide band chroma components are sampled at one half this rate so that aliasing occurs. A decoder determines the direction of least resolution of each sample of the luminance signal and averages the chroma signals in this direction for each sample to eliminate aliases.
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公开(公告)号：GB2102603B
公开(公告)日：1985-04-24
申请号：GB8220834
申请日：1982-07-19
Applicant: RCA CORP
Inventor： DISCHERT ROBERT ADAMS
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.
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公开(公告)号：GB2136243B
公开(公告)日：1985-03-27
申请号：GB8400146
申请日：1984-01-05
Applicant: RCA CORP
Inventor： DISCHERT ROBERT ADAMS , FLORY ROBERT EARL
Abstract: An improved transmission arrangement for a color television signal includes a time-division multiplexing apparatus for alternately presenting for transmission through a single channel baseband signals defining the chrominance information of the television signal. In order to provide improved resolution, a store is coupled to the signal source for storing at a writing rate a first of the baseband components during the time at which it is generated. A read generator is coupled to the store for reading the stored baseband component at a higher data rate than that at which it was generated. The baseband component is transmitted through the single channel at the higher data rate.
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