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公开(公告)号：KR860000232B1
公开(公告)日：1986-03-15
申请号：KR800004602
申请日：1980-12-02
Applicant: MOTOROLA INC
Inventor： PARKER NORMAN W , HILBERT FRANCIS H
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公开(公告)号：US3603894A
公开(公告)日：1971-09-07
申请号：US3603894D
申请日：1969-08-08
Applicant: MOTOROLA INC
Inventor： CECCHIN GILDO , HILBERT FRANCIS H
CPC classification number: H03F3/68 , H03F3/45071
Abstract: A cascaded train of transistor differential amplifier circuits are operated with a single primary constant current source connected to the first amplifier of the train. The constant current sources for each of the other differential amplifiers are obtained by recombining the signals present on the collectors of the transistors in the next preceding amplifier in common to the emitters of each of the transistors in the subsequent differential amplifier stage.
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公开(公告)号：US3644677A
公开(公告)日：1972-02-22
申请号：US3644677D
申请日：1970-03-09
Applicant: MOTOROLA INC
Inventor： CECCHIN GILDO , HILBERT FRANCIS H
Abstract: In an electronic video recording (EVR) system, the color information is encoded in the form of pulse width modulated rectangular pulses derived from the EVR scanning pattern, with the two color signals required being provided in an interleaved pattern by time division multiplex. The leading edge of each of the pulses conveys the necessary synchronizing information and the trailing edge is modulated to represent the saturation of the particular hue to which the pulse corresponds. A demodulator for recovering the color information reconstructs and inverts the color information signal which then is applied to a demodulator gate in the form of a differential amplifier controlled by delayed switching pulses synchronized with the information signal to alternately enable one or the other of the outputs of this gate. A circuit is provided for resetting the phase of the flipflop controlling the switching of the demodulator gate at the beginning of each line if the phase of the input signal is not proper.
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公开(公告)号：US3626089A
公开(公告)日：1971-12-07
申请号：US3626089D
申请日：1969-11-26
Applicant: MOTOROLA INC
Inventor： CECCHIN GILDO , HILBERT FRANCIS H
CPC classification number: H04N9/68
Abstract: A color television receiver has an integrated circuit chroma amplifier and burst-separating circuit using a pair of differential current-steering gates as the output and separating stage thereof with switching of the steering gates being utilized to gate the chroma signals to a chroma output during the scan portions of the cycle of operation of the receiver, and to gate the burst signals to an output coupled to a reference oscillator, with a substitution of a corresponding DC operating level being provided at each of these outputs when the signal is being switched to the other output. In addition, the chroma amplifier DC operating point is determined by a constant current source which is immune to variations in the DC level of the signals caused by variations in the ACC gain control signal.
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公开(公告)号：US3558810A
公开(公告)日：1971-01-26
申请号：US3558810D
申请日：1969-02-10
Applicant: MOTOROLA INC
Inventor： CECCHIN GILDO , HILBERT FRANCIS H
CPC classification number: H04N9/66
Abstract: A silicon monolithic integrated circuit consisting of three sets of full-wave, synchronous, switched demodulators is used to demodulate the red, blue and green color signals present in a composite television signal. Each of the demodulators consists of two pairs of switching transistors with the transistors in each of the pairs being rendered alternately conductive by a reference signal derived from the reference oscillator in a color television receiver. The phase of the red and the blue reference oscillator signals are obtained in a conventional manner, and the phase for the green reference signal is obtained by adding a predetermined portion of the red and blue signals together in a resistive adder to provide the green oscillator signal. The color signals are supplied in alternate phase to the two pairs of switching transistors in each of the demodulators, and the brightness signal components are applied equally or push-push to the switching transistors of the demodulators through an input transistor for each of the demodulators. In order to provide the proper relative amounts of gain for three demodulators, the red and blue signal demodulators have shunting resistance circuits connected across the input transistor circuits; and the green demodulator has a shunt connected across equal taps on voltage dividers connected to the outputs thereof. Since the brightness signal components are balanced with respect the the shut devices, the brightness signal passes through all of the demodulators unaffected by the shunting circuits.
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Patent Agency Ranking
公开(公告)号：US3622693A
公开(公告)日：1971-11-23
申请号：US3622693D
申请日：1970-05-18
Applicant: MOTOROLA INC
Inventor： CIELLO ROBERT R DEL , HILBERT FRANCIS H
CPC classification number: H04N9/82
Abstract: A color signal modulator encodes or modulates two channels of color signal information as pulse-width modulated, time-divisionmultiplexed pulses to produce an input signal for an electronic video-recording (EVR) system. At predetermined intervals, a phase-synchronizing sequence is provided by modulation of the pulse widths of the two channels in the form of maximum width modulation in one channel, alternating with no information in the other channel, the pattern being repeated a preestablished number of times.
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公开(公告)号：US3617641A
公开(公告)日：1971-11-02
申请号：US3617641D
申请日：1970-04-29
Applicant: MOTOROLA INC
Inventor： FIET JAMES H , HILBERT FRANCIS H
CPC classification number: H03D1/2227
Abstract: A silicon, monolithic, integrated circuit, stereo multiplex demodulator includes a first-gated symmetrical demodulator for providing the desired left and right output signals. A secondgated synchronous demodulator similar to the first is supplied with the same composite input signals supplied to the first demodulator; but the signals supplied to the second demodulator are substantially attenuated, with the second demodulator are substantially attenuated, with the second demodulator providing output signals in phase opposition to the output signals supplied by the first demodulator. The outputs of the two demodulators are combined so that the crosstalk components are effectively eliminated, since the attenuation of the signal supplied to the second demodulator is chosen so that the output of the second demodulator is equal in magnitude to the crosstalk component in the output of the first demodulator.
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公开(公告)号：US3582688A
公开(公告)日：1971-06-01
申请号：US3582688D
申请日：1969-02-06
Applicant: MOTOROLA INC
Inventor： HILBERT FRANCIS H
IPC: H03K3/2893 , H03K3/26
CPC classification number: H03K3/2893
Abstract: A stable electronic trigger circuit having a predetermined DC hysteresis in the operation of the circuit is formed as an integrated circuit including three NPN transistors: an input transistor and a pair of output transistors connected in a Darlington amplifier configuration directly driven from the collector of the input transistor. Operating potential for the trigger circuit is obtained from the voltage drop across a string of series connected transistor diodes, and the input transistor has collector and emitter resistors connected to it, with the collector resistor having an impedance many times that of the emitter resistor. The switching levels of the trigger circuit are determined by the ratio of the collector and emitter resistors in the input transistor circuit and/or by the base-emitter voltage drops across the transistors.
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公开(公告)号：US3624303A
公开(公告)日：1971-11-30
申请号：US3624303D
申请日：1970-03-09
Applicant: MOTOROLA INC
Inventor： HILBERT FRANCIS H
CPC classification number: H04N5/843 , H04J3/0614
Abstract: Pulse-width modulated, time-division multiplexed pulses are used to convey two channels of color information in an electronic video-recording (EVR) system, with the color information being recovered by a demodulator gate switched in synchronism with the information signal train to alternately pass the information pulses to different outputs of the gate. At predetermined intervals, the modulation of the pulse widths of the two channels is in the form of maximum width modulation in one channel alternating with no information in the other channel; the pattern being repeated a predetermined number of times. A detecting circuit coupled to an output of the demodulator gate responds to the presence of this sequence in improper phase and corrects the phase of operation of the demodulator gate if the sequence is being demodulated in the wrong phase.
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10.发明授权
公开(公告)号：US3604845A
公开(公告)日：1971-09-14
申请号：US3604845D
申请日：1969-11-26
Applicant: MOTOROLA INC
Inventor： CECCHIN GILDO , HILBERT FRANCIS H
Abstract: A color television receiver uses an integrated circuit to provide the subcarrier reference signals and ACC control voltage for the receiver. The circuit includes a first differential amplifier, unbalanced at the burst signal frequency, operated as the color reference oscillator to provide first and second differently phased output signals which are applied to a pair of differential steering gates. A phase-shift hue control of the color reference signal is obtained by adding selected outputs of the pair of differential steering gates. In addition, a differential amplifier is operated as diodeless detector for deriving ACC voltage from the oscillator output when burst signals are applied to the input of the oscillator.
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