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"I hate what they've done to my child...I would never let my own children watch it. "
Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.
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| Number | Title | Issue Date |
| 4575709 | Signal encoding-decoding apparatus In order to reduce the effect of noise on information signals transmitted over a communications link (such as television signals in a DBS link), encoding-decoding apparatus is provided which treats the signals as a series of samples (S) each composed of a... | 03/11/1986 |
| 4562404 | FM Demodulator with selective phase shift circuits The disclosure is directed to an improved FM demodulating circuit which is simple in circuit construction, with a small number of parts required, and so arranged that in a quadrature detecting circuit, a plurality of piezoelectric resonators, for example,... | 12/31/1985 |
| 4559566 | FM demodulating circuit having an insensitive frequency point An FM demodulating circuit demodulates a frequency-modulated signal of a predetermined channel of frequency-modulated signals of respectively different channels, where the frequency-modulated signals are obtained by frequency-modulating carriers of respec... | 12/17/1985 |
| 4549143 | F.M. Demodulator with waveform correction circuit An F.M. demodulation circuit can be rendered insensitive to amplitude, level and waveform variations of the frequency-modulated carrier signal by using a frequency-demodulator (33,37) tuned to half the frequency of the carrier and preceded by a divide-by-... | 10/22/1985 |
| 4500922 | Synchronous demodulation circuit for a carrier which is amplitude-modulated by a video signal A demodulation circuit comprising a high-frequency amplifier (2) and a subsequent demodulator (3) the output of which is fedback to a control input of the amplifier (2) via a keyed automatic gain control circuit (5). In addition, the output is fedback to ... | 02/19/1985 |
| 4410856 | Frequency demodulator having automatic gain control A frequency demodulator circuit having an automatic gain control. The circuit will find particular use in SECAM color television receivers. The demodulator has two inputs; one receives alternately the reference frequency (during a sampling interval) and t... | 10/18/1983 |
| 4385326 | Video disc systems with plural preemphasis/deemphasis networks In video recording apparatus a luminance signal is doubly preemphasized by a cascade connection of two networks prior to clipping and application to a frequency modulator. One network has a non-linear phase characteristic and an amplitude response which i... | 05/24/1983 |
| 4367491 | Video signal recovery system Sync-positive and sync-negative video signals appearing across load resistors of synchronous video detector employing array of NPN transistors are coupled via respective voltage dividers to complementary inputs of differential amplifier employing NPN tran... | 01/04/1983 |
| 4359694 | FM Demodulator for a plurality of carrier frequencies An FM signal demodulating circuit comprises a peak differential type amplifier having two input terminals, a resonance circuit network connected between the two input terminals of the peak differential type amplifier, and a capacitor between the resonance... | 11/16/1982 |
| 4335394 | Crosstalk filtering arrangement with variable frequency filtering to remove effects of FM carrier The effects of crosstalk of an FM carrier from a first signal channel into a second signal channel are reduced by a variable-frequency notch filter coupled in the second channel. The frequency of the notch in the transmission characteristic of the filter ... | 06/15/1982 |
| 4323924 | Automatic phase adjusting circuit for a synchronous detector A phasing circuit is described for automatically controlling the phase of an oscillator input to a synchronous detector which demodulates a video signal in a television receiver. A conventional phase locked loop develops an oscillator signal whose phase t... | 04/06/1982 |
| 4263611 | Television signal processing system A selectivity network is provided for a synchronous detector, a reference signal circuit, and an AFT circuit. The selectivity network comprises a first tuned circuit coupled across two terminals of the reference signal circuit and tuned to the desired fre... | 04/21/1981 |
| 4159482 | Television receiver having a demodulator circuit for demodulating a television signal modulated on a carrier In a television receiver comprising a synchronous demodulator having a push-pull output behind which an emitter-coupled transistor pair is connected for suppressing whiter-than-white noise signals, a signal can be obtained from the collector circuit of on... | 06/26/1979 |
| 4146843 | Phase synchronizing arrangement for video synchronous detection An RF-IF signal receiving circuit of a television receiver controls a tuner which receives an amplitude modulated RF signal and converts it to an IF signal and an IF signal carrier generator for demodulating the amplitude modulated signal from the IF sign... | 03/27/1979 |
| 4127825 | Linear frequency discriminator A quadrature phase detector having a tuned circuit connected between inputs thereof with a voltage variable reactance connected therein and further connected to the output of the phase detector for tuning the tuned circuit in accordance with the output of... | 11/28/1978 |
| 3962649 | Surface wave frequency discriminator A frequency discriminator utilizing a surface wave device is described wherein threshold means are used to suppress spurious responses due to the side lobes and other parasitic effects of the surface wave device.... | 06/08/1976 |
| 3961135 | Synchronized demodulation system A demodulation system for use in a vestigial sideband system of an over-modulation type including a sampler for sampling a reduced carrier frequency component from a received modulated wave to be used for demodulation. A discriminator is operative to dete... | 06/01/1976 |
