Patents by Inventor Ichiro Arimura
Ichiro Arimura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6508596Abstract: A plurality of digital signals having total data rates of n bit/s or less are input to a digital recording device recording digital signals having a data rate of n bit/s. The digital signals are subjected to format-conversion for the digital recording device to be recorded therein. Furthermore, signals having a data rate of n/i1 bit/s or less are subjected to format-conversion to be recorded i1 times in the digital recording device. In the case where the data rate of the digital signals to be input is n/j bit/s, the digital signals are subjected to format-conversion so that the amount of data capable of being recorded per unit time is decreased by i/j; thus, the digital signals are recorded for a long period of time under the condition that the data recording time is prolonged j times.Type: GrantFiled: August 16, 2000Date of Patent: January 21, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Chiyoko Matsumi, Ichiro Arimura, Akira Iketani, Masazumi Yamada, Tatsuro Juri, Yukio Kurano, Yoshinori Kitamura, Chojuro Yamamitsu
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Patent number: 6147823Abstract: A plurality of digital signals having total data rates of n bit/s or less are input to a digital recording device recording digital signals having a data rate of n bit/s. The digital signals are subjected to format-conversion for the digital recording device to be recorded therein. Furthermore, signals having a data rate of n/i.sub.1 bit/s or less are subjected to format-conversion to be recorded i.sub.1 times in the digital recording device. In the case where the data rate of the digital signals to be input is n/j bit/s, the digital signals are subjected to format-conversion so that the amount of data capable of being recorded per unit time is decreased by i/j; thus, the digital signals are recorded for a long period of time under the condition that the data recording time is prolonged j times.Type: GrantFiled: July 10, 1997Date of Patent: November 14, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Chiyoko Matsumi, Ichiro Arimura, Akira Iketani, Masazumi Yamada, Tatsuro Juri, Yukio Kurano, Yoshinori Kitamura, Chojuro Yamamitsu
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Patent number: 6038094Abstract: A plurality of digital signals having total data rates of n bit/s or less are input to a digital recording device recording digital signals having a data rate of n bit/s. The digital signals are subjected to format-conversion for the digital recording device to be recorded therein. Furthermore, signals having a data rate of n/i.sub.1 bit/s or less are subjected to format-conversion to be recorded i.sub.1 times in the digital recording device. In the case where the data rate of the digital signals to be input is n/j bit/s, the digital signals are subjected to format-conversion so that the amount of data capable of being recorded per unit time is decreased by i/j; thus, the digital signals are recorded for a long period of time under the condition that the data recording time is prolonged j times.Type: GrantFiled: September 1, 1995Date of Patent: March 14, 2000Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Chiyoko Matsumi, Ichiro Arimura, Akira Iketani, Masazumi Yamada, Tatsuro Juri, Yukio Kurano, Yoshinori Kitamura, Chojuro Yamamitsu
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Patent number: 4597021Abstract: A video signal recording and reproducing apparatus in which the luminance signal of a color video signal is frequency-modulated for recording and a reproduction frequency-modulated signal is frequency-demodulated to produce a reproduction video signal. A high frequency component is separated from the reproduction video signal and applied to a slice circuit comprising nonlinear elements including, for example, diodes connected in parallel with reverse polarities, thus eliminating noise at the low frequency signals included in the high frequency component. The apparatus further comprises a device for subtracting the sliced signal and the reproduced video signal one from the other in such a manner that the two signals are in phase with each other substantially at the desired ratio and in a predetermined frequency band.Type: GrantFiled: January 22, 1985Date of Patent: June 24, 1986Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Chojuro Yamamitsu, Ichiro Arimura
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Patent number: 4400742Abstract: A magnetic recording and reproducing apparatus, for recording and reproducing the color television signal including VIR signal, of the type having a comb filter which is inserted in the chrominance signal system and includes a delay line for causing a delay equal to one horizontal line scanning period. In this apparatus the VIR signal has no line correlation so that the output of the comb filter becomes a VIR signal the amplitude of which is reduced by 6dB and that the amplitude and/or phase of the chrominance components of VIR signal are caused to vary over a wide range due to the effects of VIT signal.Type: GrantFiled: May 29, 1980Date of Patent: August 23, 1983Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Chojuro Yamamitsu, Ichiro Arimura, Masamitsu Ohtsu
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Patent number: 4303952Abstract: A video signal recording and reproducing system in which a video signal to be recorded is passed through preemphasis means and subsequently angular modulated so that it is recorded on a record medium. During playback operation, the video signal is angular demodulated and deemphasized through a deemphasis means. Preemphasis means comprises both a non-linear preemphasis circuit and a fixed preemphasis circuit. The deemphasis means similarly comprises a fixed deemphasis circuit and a non-linear deemphasis circuit. Each of the non-linear circuits is responsive to the amplitude of an input signal thereon.Type: GrantFiled: June 26, 1978Date of Patent: December 1, 1981Assignee: Matsushita Electric Industrial Co., LtdInventors: Chojuro Yamamitsu, Ichiro Arimura, Hiroshi Taniguchi
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Patent number: 4137547Abstract: A magnetic recording and reproducing system which separates a brightness signal and a carrier color signal from a color television signal, frequency modulates the brightness signal and converts the carrier color signal to a lower frequency, records the modulated brightness signal and the low frequency carrier color signal in different manner for each horizontal scan line such that phases of the carrier are different between adjacent record tracks, and plays back the recorded signal through a comb filter to eliminate crosstalk from adjacent tracks in the carrier color signal. In this system, a horizontal synch. signal is eliminated in response to the detection of dropouts so as to prevent the disturbance of AFC and APC loops by dropouts, which would otherwise create color irregularity, and the horizontal synch. signal free of noise due to dropouts is used to activate the AFC and APC loops.Type: GrantFiled: October 17, 1977Date of Patent: January 30, 1979Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Chojuro Yamamitsu, Ichiro Arimura, Sadafumi Kitamura, Norio Meki
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Patent number: 3975759Abstract: A steady and inexpensive color killer circuit system for a simplified video tape recorder of the type wherein the luminance signal and chrominance signal of a color television signal are respectively converted into an angular modulation signal and a lower frequency conversion signal for recording these signals in the form of a combined signal and also where a reproduced lower frequency converted chrominance signal is heterodyned with a continuous signal phase locked to the color burst signal in the reproduced chrominance signal to thereby cancel jitter components in the reproduced chrominance signal.Type: GrantFiled: October 11, 1974Date of Patent: August 17, 1976Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Hiroshi Taniguchi, Ichiro Arimura
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Patent number: 3969755Abstract: An equipment for recording and reproducing color television signals or VTR (video tape recorder) is combined with a color television receiver as a single unit in such a way that some of their circuits are used in common with both the VTR and receiver, whereupon the circuit design as well as operation may be greatly simplified. The VTR and receiver are operatively coupled to each other through a switch for selecting a recording or reproducing mode. In recording mode, the video signal, which is received and detected by the receiver, passes through the mode selction switch to the luminance signal processing circuit and the carrier chrominance signal processing circuit in the receiver. The separated luminance and chrominance signals are applied to the input terminal of the VTR so that they may be recorded while one is watching the picture on a picture tube.Type: GrantFiled: October 7, 1974Date of Patent: July 13, 1976Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Ichiro Arimura, Hiroshi Taniguchi, Chojuro Yamamitsu
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Patent number: 3953882Abstract: In a system for cancelling time axis variations introduced into a frequency converted chrominance signal converted into a lower frequency range in the recording and reproduction of a color television signal with a small-size video tape recorder, in which system the cancellation of the time axis variations is effected by using a continuous reference signal obtained through an APC heterodyne system, the center frequency of oscillation of an APC oscillator is made n/m times the subcarrier frequency f.sub.s of the lower frequency converted chrominance signal (m and n being integers and n>m), and the reproduced frequency converted chrominance signal is heterodyned with a signal obtained by heterodyning a continuous signal obtained by dividing the frequency of the output signal of the oscillator by n/m in the presence of a steady reference signal at the same frequency as the standard color sub-carrier frequency to thereby obtain the cancellation of the time axis variations.Type: GrantFiled: August 29, 1974Date of Patent: April 27, 1976Assignee: Matsushita Electric Industrial Company, Ltd.Inventors: Ichiro Arimura, Hiroshi Taniguchi, Kunio Sekimoto
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Patent number: 3938180Abstract: A signal processing system for obtaining a continuous signal, phase locked to a signal subjected to timing variations. The continuous signal phase locked to a signal subjected to timing variations is obtained from a variable oscillator, whose oscillation is controlled according to an error signal produced from a phase comparator in accordance with the phase difference between the signal subjected to timing variations and a higher-frequency signal produced from the output of said variable oscillator in the presence of a fixed oscillator.Type: GrantFiled: February 26, 1974Date of Patent: February 10, 1976Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Ichiro Arimura, Hiroshi Taniguchi, Hiromichi Tanaka