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公开(公告)号：DE2516899A1
公开(公告)日：1975-10-30
申请号：DE2516899
申请日：1975-04-17
Applicant: SONY CORP
Inventor： KUNIYOSHI YASUNOBU , TSUCHIYA TAKAO
Abstract: A DC level control circuit wherein the DC level of an input signal is compared to a reference level and a DC bias potential is varied in accordance with said comparison, the varied bias potential being fed back to correspondingly vary the DC level input signal.
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公开(公告)号：DE2938994C3
公开(公告)日：1998-07-09
申请号：DE2938994
申请日：1979-09-26
Applicant: SONY CORP
Inventor： OKADA TAKASHI , KUNIYOSHI YASUNOBU
Abstract: A filter circuit whose cut-off frequency is easily controlled and which can be manufactured as an integrated circuit. The base electrode of a first transistor is connected to an input terminal by a reactance element, such as a capacitor. Second and third transistors are connected in differential amplifier configuration, and a current source is connected to the common connection of the emitter electrodes thereof. The emitter electrode of the first transistor is connected to the base electrode of the second transistor and the base electrode of the first transistor is connected to the collector electrode of the second transistor. An output terminal is connected to at least one of the collector and emitter electrodes of the first transistor.
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公开(公告)号：MY100980A
公开(公告)日：1991-06-15
申请号：MYPI19872425
申请日：1987-09-30
Applicant: SONY CORP
Inventor： OKADA TAKASHI , KUNIYOSHI YASUNOBU
Abstract: IN A CONTROL APPARATUS FOR CONTROLLING A PLURALITY OF FUNCTION, A PLURALITY OF ITEMS OF CONTROL DATA REPRESENTING DESIRED SETTING OF RESPECTIVE QUANTITIES ASSOCIATED WITH A TELEVISION RECEIVER ARE SERIALLY TRANSFERRED FROM A TRANSISTOR (50) TO A RECEIVER (100) INCLUDING A SHIFT REGISTER (101) WHERE THEY ARE CONVERTED INTO PARALLEL CONTROL DATA. THE PARALLEL-CONVERTED CONTROL DATA IS SUPPLIED TO AD-A CONVERTER (103) TO PRODUCE A PLURALITY OF ANALOG CONTROL VOLTAGES WHICH ARE FED TO AN AUDIO PREAMPLIFIER (23) AND A VIDEO PROCESSING CIRCUIT (14). MEANS IS PROVIDED FOR PRESETTING PREDETERMINED ITEMS OF CONTROL DATA OF THE PLURALITY OF ITEMS OF CONTROL DATA TO PREVIOUSLY DETERMINED DATA BY A SINGLE OPERATION. (FIG. 1)
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公开(公告)号：AT48358T
公开(公告)日：1989-12-15
申请号：AT85306172
申请日：1985-08-30
Applicant: SONY CORP
Inventor： TSUCHIYA SATOSHI , AOYAGI MINORU , KUNIYOSHI YASUNOBU
Abstract: An automatic white balance control circuit includes a main photo-sensor (11) from which three primary color signals are derived (12), three external light sensing elements (21R, 21G, 21B) having spectral characteristics the same as those of the main photo-sensor (11), three capacitors (24R, 24G, 24B) for converting output currents from the three external light sensing elements to respective voltages, a voltage comparator (34) for comparing a voltage across at least the one capacitor (24G) corresponding to green light with a reference voltage (35), and three sample-and-hold circuits (27R, 28R; 27G, 28G; 27B, 28B) for sampling and holding voltages from the three capacitors (24R, 24G, 24B), respectively. Charging of the three capacitors by output currents from the three external light sensing elements, respectively, is started at the commencement of each cycle. When the voltage comparator (34) produces a compared output in response to the voltage across the one capacitor (24G) having become equal to the reference voltage, the charging is stopped and the voltages then present on the three capacitors are sampled and held by the three sample-and-hold circuits to thereby provide white balance control signals by which the level ratios of the three primary color signals derived from the main photo-sensor are controlled to be 1:1:1 thereby to adjust the white balance.
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公开(公告)号：DE3105301A1
公开(公告)日：1981-12-17
申请号：DE3105301
申请日：1981-02-13
Applicant: SONY CORP
Inventor： KUNIYOSHI YASUNOBU , OKADA TAKASHI
Abstract: A control apparatus for controlling a plurality of characteristics, such as hue, color, brightness, sound and the like, of a reproduced video picture includes a transmitter having a memory for storing data entries corresponding to the characteristics to be controlled, a central processing unit to change selected ones of the stored data entries and a plurality of switches for controlling the central processing unit to change selected ones of the stored data entries in response to actuation of selected ones of the switches, whereby the transmitter transmits the stored data entries, as changed; a receiver including a shift register in which the transmitted control data entries are serially received and converted into parallel control data entries, a D-A converter for producing a plurality of analog control voltages in response to the parallel control data entries from the shift register; and a plurality of voltage-controlled circuits for controlling the plurality of characteristics in response to the plurality of analog control voltages.
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Patent Agency Ranking
公开(公告)号：CA1113182A
公开(公告)日：1981-11-24
申请号：CA290575
申请日：1977-11-09
Applicant: SONY CORP
Inventor： KUNIYOSHI YASUNOBU , OKADA TAKASHI , SUMI TAKAO
Abstract: In apparatus for processing an information signal, such as, the chrominance component of a reproduced color video signal, time base errors composed of phase and frequency errors are eliminated by detecting phase and frequency errors, respectively, of the chrominance component, frequency converting the chrominance component with a frequency converting signal which is generated, at least in part, by means of a variable frequency oscillator, controlling such oscillator by an automatic phase control circuit (APC) in response to detected phase errors within a predetermined or lock-in range of the APC so as to eliminate such phase errors from the frequency converted chrominance component, and further controlling the variable frequency oscillator in response to only those detected frequency errors which correspond to time base errors beyond the lock-in range of the APC for returning to within such range.
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公开(公告)号：CA1099398A
公开(公告)日：1981-04-14
申请号：CA292749
申请日：1977-12-09
Applicant: SONY CORP
Inventor： KUNIYOSHI YASUNOBU , OKADA TAKASHI , SUMI TAKAO
Abstract: Apparatus for eliminating time base errors from a carriermodulated information signal, such as a color video signal which is reproduced from a record medium. A circuit including a variable oscillator generates a carrier signal of controllable frequency and phase. An automatic frequency control circuit detects the time base frequency error in the carrier-modulated information signal and produces a frequency error signal proportional to the detected frequency error. An automatic phase control circuit detects a time base phase error in the carrier-modulated information signal and produces a phase error signal proportional to the detected phase error. A switching circuit selectively supplies either the frequency error signal or the phase error signal as a control signal to the variable oscillator so as to correspondingly control the frequency and phase of the generated carrier signal. in a manner to eliminate such frequency and phase errors, the frequency and phase error signals being supplied to the variable oscillator during selected mutually exclusive intervals. A frequency converter is provided with the controlled carrier signal and with the information signal so as to convert the carrier of the information signal with the generated, controlled carrier such that the frequency-converted information signal has a carrier of substantially constant frequency and phase.
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公开(公告)号：AU3068977A
公开(公告)日：1979-05-24
申请号：AU3068977
申请日：1977-11-16
Applicant: SONY CORP
Inventor： KUNIYOSHI YASUNOBU , OKADA TAKASHI , SUMI TAKAO
Abstract: In apparatus for processing an information signal, such as, the chrominance component of a reproduced color video signal, time base errors composed of phase and frequency errors are eliminated by detecting phase and frequency errors, respectively, of the chrominance component, frequency converting the chrominance component with a frequency converting signal which is generated, at least in part, by means of a variable frequency oscillator, controlling such oscillator by an automatic phase control circuit (APC) in response to detected phase errors within a predetermined or lock-in range of the APC so as to eliminate such phase errors from the frequency converted chrominance component, and further controlling the variable frequency oscillator in response to only those detected frequency errors which correspond to time base errors beyond the lock-in range of the APC for returning to within such range.
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公开(公告)号：CA1035015A
公开(公告)日：1978-07-18
申请号：CA224984
申请日：1975-04-18
Applicant: SONY CORP
Inventor： KUNIYOSHI YASUNOBU , TSUCHIYA TAKAO
Abstract: A DC level control circuit wherein the DC level of an input signal is compared to a reference level and a DC bias potential is varied in accordance with said comparison, the varied bias potential being fed back to correspondingly vary the DC level input signal.
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公开(公告)号：CA1034209A
公开(公告)日：1978-07-04
申请号：CA225341
申请日：1975-04-24
Applicant: SONY CORP
Inventor： KUNIYOSHI YASUNOBU , YAMAGIWA KAZUO
Abstract: A phase detector comprising a first differential amplifier for receiving a first input signal and having an output circuit which produces an output that is a direct function of the first input signal. An actuable second differential amplifier receives a second input signal and includes an output circuit for producing an output signal which is proportional to the phase difference between the first and second input signals. The second differential amplifier is coupled to the first differential amplifier output circuit so as to be actuated by the output produced by the output circuit and to thereby produce an output signal representing the phase difference between the second input signal and the output supplied by the first differential amplifier output circuit. The output produced by the first differential amplifier output circuit is supplied as a differential amplifier current to the second differential amplifier. Hence, in one embodiment, the second differential amplifier includes common-connected stages connected in differential configuration, the common connection being coupled to the first differential amplifier output circuit.
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