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公开(公告)号：WO1982002637A1
公开(公告)日：1982-08-05
申请号：PCT/US1982000086
申请日：1982-01-25
Applicant: RCA CORP
Inventor： RCA CORP , STROLLE CHRISTOPHER HUGH , SMITH TERRANCE RAYMOND , LEWIS HENRY GARTON JR , ACAMPORA ALFONSE , REITMEIER GLENN ARTHUR
IPC: H04N05/02
CPC classification number: H04N9/78 , G06F1/0307 , G06F1/0353 , G06F1/0356 , G06F2101/04 , G06F2101/08 , G06F2101/10 , G06T3/00 , G09G5/395 , G11C7/00 , G11C8/04 , G11C8/16 , H04N9/646
Abstract: A digital memory (10) which contains digital data words representative of a desired symmetrical transfer characteristic of a digital signal processor. Digital signals which are to be processed are applied to the address inputs of the memory (10), producing output signals in conformance with the desired transfer characteristic. Advantage is taken of the symmetrical nature of the response characteristic to minimize the size of the memory. Data words corresponding to only a portion of the full dynamic range of the digital signal processor are stored in the memory (10), and memory locations are addressed and read out in accordance with the value of a polarity-determining bit of the input digital signal, with the output signals being translated over the required full dynamic range in accordance with the value of the polarity-determining bit. In a preferred embodiment of the invention, the memory (10) is a random access memory, with stored data values being altered in response to a user control to change the transfer characteristic of the processor.
Abstract translation: 数字存储器（10），其包含表示数字信号处理器的期望对称传送特性的数字数据字。 要处理的数字信号被施加到存储器（10）的地址输入端，产生符合期望传输特性的输出信号。 利用响应特性的对称性优点来最小化存储器的大小。 仅对应于数字信号处理器的全部动态范围的一部分的数据字被存储在存储器（10）中，并且根据输入数字信号的极性确定位的值来寻址和读出存储单元 ，其中输出信号根据极性确定位的值在所需的全动态范围内转换。 在本发明的优选实施例中，存储器（10）是随机存取存储器，响应于用户控制改变存储的数据值，改变处理器的传送特性。
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公开(公告)号：EP0070311A4
公开(公告)日：1985-06-06
申请号：EP82900743
申请日：1982-01-25
Applicant: RCA CORP
Inventor： STROLLE CHRISTOPHER HUGH , SMITH TERRANCE RAYMOND , LEWIS HENRY GARTON JR , ACAMPORA ALFONSE , REITMEIER GLENN ARTHUR
IPC: G06F1/03 , G06F1/035 , G06T3/00 , G09G5/395 , G11C7/00 , G11C8/04 , G11C8/16 , H04N9/64 , H04N9/78 , H04N5/02
CPC classification number: H04N9/78 , G06F1/0307 , G06F1/0353 , G06F1/0356 , G06F2101/04 , G06F2101/08 , G06F2101/10 , G06T3/00 , G09G5/395 , G11C7/00 , G11C8/04 , G11C8/16 , H04N9/646
Abstract: A digital memory (10) which contains digital data words representative of a desired symmetrical transfer characteristic of a digital signal processor. Digital signals which are to be processed are applied to the address inputs of the memory (10), producing output signals in conformance with the desired transfer characteristic. Advantage is taken of the symmetrical nature of the response characteristic to minimize the size of the memory. Data words corresponding to only a portion of the full dynamic range of the digital signal processor are stored in the memory (10), and memory locations are addressed and read out in accordance with the value of a polarity-determining bit of the input digital signal, with the output signals being translated over the required full dynamic range in accordance with the value of the polarity-determining bit. In a preferred embodiment of the invention, the memory (10) is a random access memory, with stored data values being altered in response to a user control to change the transfer characteristic of the processor.
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公开(公告)号：CS781282A2
公开(公告)日：1988-01-15
申请号：CS781282
申请日：1982-11-03
Applicant: RCA CORP
Inventor： ACAMPORA ALFONSE
Abstract: A digital finite impulse response (FIR) filter is provided in which a plurality of weighted signal taps are symmetrically located in time about a weighted center tap. Weighted signals from the symmetrically located taps are summed at a first point in the filter, which sum is then combined with signals from the center tap in one sense, that is, either additively or subtractively, to produce signals at a first output. The summed signals at the first point are also combined with signals from the center tap in an opposite sense to produce signals at a second output. The two outputs will exhibit bandpass and lowpass filter response characteristics, with the outputs at which the respective responses are produced being determined by the respective senses of signal combination. The FIR filter may be of either the input tap-weighted or output tap-weighted variety.
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公开(公告)号：CA1219347A
公开(公告)日：1987-03-17
申请号：CA473081
申请日：1985-01-29
Applicant: RCA CORP
Inventor： ACAMPORA ALFONSE
Abstract: RCA 80,722 A frame-to-frame comb filter system which reduces motion induced artifacts in the comb filtered luminance signal includes line comb filter circuitry for extracting luminance cross components from the comb filtered chrominance signal and reinserting them into the comb filtered luminance signal and a line comb filter in the luminance path following reinsertion of the luminance cross components to reject motion induced chrominance cross components occurring in the comb filtered luminance signal. The latter line comb filter is switched into the system during periods of interframe image motion.
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公开(公告)号：GB2177872A
公开(公告)日：1987-01-28
申请号：GB8615923
申请日：1986-06-30
Applicant: RCA CORP
Inventor： LU CHUNG HSIN , ACAMPORA ALFONSE
Abstract: In field/frame recursive filters for providing noise reduction to composite video signal, inversion of the chrominance component of the composite video signal is obviated by selecting nearest neighbor in-phase field/frame delayed signals for recursion. The system arbitrates between two or more nearest neighbor in-phase signals or combinations thereof and feeds back the signal having an amplitude most closely matching the incoming composite video signal.
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Patent Agency Ranking
公开(公告)号：DE3364939D1
公开(公告)日：1986-09-04
申请号：DE3364939
申请日：1983-06-27
Applicant: RCA CORP
Inventor： ACAMPORA ALFONSE
Abstract: An automatic color control (ACC) for a digital television receiver is compatible with and is unaffected by variation of the phase of the color subcarrier signal introduced in demodulating the color subcarrier to effect control of tint. ACC is effectuated by digital gain control for scaling the digital words representing the sampled magnitudes of the color subcarrier burst signal. Quadrature demodulation of the color subcarrier produces color signal digital words I and Q which are each sampled and latched during the color subcarrier burst. The sampled digital words are each squared and are then summed together. The summed digital word is compared to a chroma reference digital word and the difference digital word is employed to scale the color subcarrier digital words.
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公开(公告)号：ZA828094B
公开(公告)日：1983-09-28
申请号：ZA828094
申请日：1982-11-04
Applicant: RCA CORP
Inventor： ACAMPORA ALFONSE
Abstract: A digital finite impulse response (FIR) filter is provided in which a plurality of weighted signal taps are symmetrically located in time about a weighted center tap. Weighted signals from the symmetrically located taps are summed at a first point in the filter, which sum is then combined with signals from the center tap in one sense, that is, either additively or subtractively, to produce signals at a first output. The summed signals at the first point are also combined with signals from the center tap in an opposite sense to produce signals at a second output. The two outputs will exhibit bandpass and lowpass filter response characteristics, with the outputs at which the respective responses are produced being determined by the respective senses of signal combination. The FIR filter may be of either the input tap-weighted or output tap-weighted variety.
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公开(公告)号：FI823708L
公开(公告)日：1983-05-07
申请号：FI823708
申请日：1982-10-29
Applicant: RCA CORP
Inventor： ACAMPORA ALFONSE
Abstract: A digital finite impulse response (FIR) filter is provided in which a plurality of weighted signal taps are symmetrically located in time about a weighted center tap. Weighted signals from the symmetrically located taps are summed at a first point in the filter, which sum is then combined with signals from the center tap in one sense, that is, either additively or subtractively, to produce signals at a first output. The summed signals at the first point are also combined with signals from the center tap in an opposite sense to produce signals at a second output. The two outputs will exhibit bandpass and lowpass filter response characteristics, with the outputs at which the respective responses are produced being determined by the respective senses of signal combination. The FIR filter may be of either the input tap-weighted or output tap-weighted variety.
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公开(公告)号：GB2103401A
公开(公告)日：1983-02-16
申请号：GB8222324
申请日：1982-08-03
Applicant: RCA CORP
Inventor： ACAMPORA ALFONSE
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