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公开(公告)号：YU36683A
公开(公告)日：1986-04-30
申请号：YU36683
申请日：1983-02-16
Applicant: RCA CORP
Inventor： STECKLER S A , BALABAN A R
Abstract: An automatic gain control arrangement is provided for an analog to digital (A/D) converter in a television signal processing system. A gain-controlled source of analog signals applies a video information signal to the input of an A/D converter. The A/D converter produces digitized video signal samples at an output which is coupled to a digital peak detector. The digital peak detector detects the level of the digital samples of the synchronizing signal components. The detected sync signal level is compared with a desired value or range of values. If the detected sync signal level is not at the desired level or is outside the desired range, the count of a counter is incremented or decremented accordingly. The count of the counter is converted to an analog voltage which is applied to the gain-controlled signal source to control the level of the analog signal applied to the A/D converter. The analog voltage may also be combined with a control voltage produced by an analog peak detector, which detects the level of the input signal to the A/D converter, to produce a composite gain control signal.
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公开(公告)号：SE8300803L
公开(公告)日：1983-08-23
申请号：SE8300803
申请日：1983-02-15
Applicant: RCA CORP
Inventor： STECKLER S A , BALABAN A R
Abstract: An analog carrier signal and its sidebands contain modulated information which is to be digitally encoded and processed. Demodulation and digital encoding is accomplished in a single process by an analog-to-digital converter, which samples the analog signals in response to a sampling signal of a frequency which is at least twice the bandwidth of the band of frequencies containing the carrier signal and its information-bearing sidebands. The analog signal samples are digitally encoded, producing a band of digital information signals corresponding to baseband signal components. When used in a television receiver to produce digital signal samples, the band of analog signals may include both sound and picture carriers and their audio and video information. By controlling the phase and frequency of the analog carrier signal in relation to the color subcarrier signal, and deriving the sampling signal from the analog carrier, an ease in video signal demodulation is provided.
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公开(公告)号：BE895964A
公开(公告)日：1983-06-16
申请号：BE210160
申请日：1983-02-21
Applicant: RCA CORP
Inventor： STECKLER S A , BALABAN A R
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公开(公告)号：SE452693B
公开(公告)日：1987-12-07
申请号：SE8200637
申请日：1982-02-04
Applicant: RCA CORP
Inventor： FERNSLER R E , STECKLER S A , BALABAN A R
Abstract: A horizontal deflection turn-on circuit operates in the absence of trigger pulse normally derived by an AFPC loop. Under normal operation, the AFPC loop generates the trigger pulses based on a synchronized phase relationship with sampled flyback pulses. During receiver start-up, the flyback pulses are not present and no trigger pulses are generated. The turn on circuit provides auxiliary pulses which occur later in time than the normal occurrence of the trigger pulses. Means are provided for applying the auxiliary pulses to the horizontal deflection circuit only in the absence of normal trigger pulses.
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公开(公告)号：NZ203346A
公开(公告)日：1986-03-14
申请号：NZ20334683
申请日：1983-02-21
Applicant: RCA CORP
Inventor： STECKLER S A , BALABAN A R
Abstract: An automatic gain control arrangement is provided for an analog to digital (A/D) converter in a television signal processing system. A gain-controlled source of analog signals applies a video information signal to the input of an A/D converter. The A/D converter produces digitized video signal samples at an output which is coupled to a digital peak detector. The digital peak detector detects the level of the digital samples of the synchronizing signal components. The detected sync signal level is compared with a desired value or range of values. If the detected sync signal level is not at the desired level or is outside the desired range, the count of a counter is incremented or decremented accordingly. The count of the counter is converted to an analog voltage which is applied to the gain-controlled signal source to control the level of the analog signal applied to the A/D converter. The analog voltage may also be combined with a control voltage produced by an analog peak detector, which detects the level of the input signal to the A/D converter, to produce a composite gain control signal.
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Patent Agency Ranking
公开(公告)号：NZ199686A
公开(公告)日：1985-12-13
申请号：NZ19968682
申请日：1982-02-10
Applicant: RCA CORP
Inventor： FERNSLER R E , STECKLER S A , BALABAN A R
Abstract: A horizontal deflection turn-on circuit operates in the absence of trigger pulse normally derived by an AFPC loop. Under normal operation, the AFPC loop generates the trigger pulses based on a synchronized phase relationship with sampled flyback pulses. During receiver start-up, the flyback pulses are not present and no trigger pulses are generated. The turn on circuit provides auxiliary pulses which occur later in time than the normal occurrence of the trigger pulses. Means are provided for applying the auxiliary pulses to the horizontal deflection circuit only in the absence of normal trigger pulses.
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公开(公告)号：AU6536380A
公开(公告)日：1981-06-25
申请号：AU6536380
申请日：1980-12-12
Applicant: RCA CORP
Inventor： STECKLER S A , BALABAN A R
Abstract: A television horizontal deflection system and a switched-mode power supply are provided which share a single sawtooth waveform generator for the generation of delayed deflection signals and delayed power supply gating signals, respectively. The sawtooth waveform generator has an input coupled to receive pulses which are maintained in phase and frequency synchronism with the sync pulses of the video signal. The sawtooth waveform is applied to a comparator in the horizontal deflection system where it is compared with a D.C. voltage resulting from the phase comparison of the sync and flyback pulses to determine the time of delayed generation of the succeeding horizontal deflection signals. The sawtooth waveform is also applied to a comparator in the power supply to determine the time of delayed generation of the succeeding gating signals for the SCR or like device. By selecting a time constant for the phase adjustment between sync and flyback in the deflection system which is smaller (i.e., faster) than the time constant of the regulated supply, the phase differences between sync and flyback are so quickly compensated for by the deflection system that their effects on the regulated supply are minimized.
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公开(公告)号：SE7510536L
公开(公告)日：1976-03-29
申请号：SE7510536
申请日：1975-09-19
Applicant: RCA CORP
Inventor： STECKLER S A , BALABAN A R
Abstract: Cascaded multipliers are coupled to a source providing a periodic sawtooth deflection waveform, the amplitude of which varies with variations in the high voltage applied to an accelerating anode of a kinescope. The sawtooth signal is cubed by the cascaded multipliers and multiplied by the inverse square of a voltage which varies with changes in the kinescope anode potential. The system thus incorporates S-correction and means for correcting the deflection waveform to compensate for changes in the high voltage supplied to the kinescope anode.
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