Patents by Inventor Noboru Kojima
Noboru Kojima 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: 5825853Abstract: A communication device having an automatic answering telephone function which can record a message spoken by a sender in a record/reproduction part when there is an incoming signal in an automatic answering mode and also which can interlacedly reproduce only head parts of messages when the received message is to be reproduced. The communication device, which further has a speech processing part for changing a speech rate while keeping a speech pitch constant, can reproduce a recorded message at a speech rate designated by a user and can transmit a rate-changed speech message.Type: GrantFiled: September 4, 1996Date of Patent: October 20, 1998Assignee: Hitachi, Ltd.Inventors: Noboru Kojima, Toshiro Kamiuchi, Juichi Morikawa, Yoshito Nejime
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Patent number: 5688034Abstract: In combination with an upwardly open, rectangular refrigerator repository, a display stand in the form of a loading plate in the repository with approximately the same width dimension as the repository and with a pair of legs attached to and pivotally movable with respect to the edge portions defining the width dimension of the loaded plate. The pair of legs engage the bottom of the repository in different attitudes to arrange the loading plate at various positions in the repository.Type: GrantFiled: April 1, 1996Date of Patent: November 18, 1997Assignee: Kabushiki Kaisha Yunikura SangyoInventor: Noboru Kojima
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Patent number: 5132793Abstract: There is disclosed a compatible television receiver capable of receiving and reproducing both the standard system television signal and the high definition television signal and capable of confining the degradation of picture quality of the high definition television signal to the minimum, in which the received standard system television signal and high definition television signal are respectively converted to non-interlace signals, and scanning is selectively performed with either of non-interlace video signals to display images.Type: GrantFiled: March 9, 1990Date of Patent: July 21, 1992Assignees: Hitachi, Ltd., Nippon Hoso KyokaiInventors: Shigeru Hirahata, Shinobu Torikoshi, Toshiyuki Sakamoto, Takumi Okamura, Noboru Kojima, Tetsuo Mitsuhashi, Isao Kondo, Yuichi Ninomiya, Koichi Yamaguchi, Toshiro Ohmura
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Patent number: 5016111Abstract: A television signal recording/reproducing apparatus of the color-under recording type wherein an input composite video signal is separated into a luminance signal and a color signal. For the separated luminance signal, calculation of the interframe signals is executed so that the color signal component remaining in the separated luminance signal is removed by a frame comb filter. And the input signal and the output signal of the frame comb filter are mixed with each other. For the separated color signal, calculation of the interframe signals is executed so that the luminance signal component remaining in the separated color signal is removed by a frame comb filter. And the input signal and the output signal of the frame comb filter are mixed with each other. Each of the signal mixing ratios is controlled in accordance with the interframe level difference in the luminance signal. And the mixed signals are recorded on a recording medium after predetermined recording processes.Type: GrantFiled: November 15, 1988Date of Patent: May 14, 1991Assignee: Hitachi, Ltd.Inventors: Toshiyuki Sakamoto, Noboru Kojima, Isao Nakagawa
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Patent number: 4969783Abstract: In connection with a Fresnel lens in which concentric pitch base lines are drawn on a curved lens member at certain pitches and a number of radial partitioning lines are drawn so as to pass through the center of the concentric pitch base lines and to cross these lines so that a surface of the lens member is partitioned into a large number of arcuate Fresnel step design sections, and an angled Fresnel step is formed in each of the Fresnel step design sections so that light transmitted from a focal point of the lens at its rear side forms a substantially parallel flux of light through a refractive or reflective prism, the invention relates to the cutting of Fresnel steps in a mold element for forming the lens by causing a tool attached to a multiple axis milling cutter and having an acute point to perform reciprocating or circumferential cutting for every width of each of the inclined surfaces of said Fresnel steps while causing the tool to move radially to perform scan-cutting of the inclined surfaces.Type: GrantFiled: April 7, 1989Date of Patent: November 13, 1990Assignee: Koito Manufacturing Co., Ltd.Inventors: Yasuo Ozawa, Koichi Sakakibara, Noboru Kojima, Akira Nagakura, Seiji Igarashi
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Patent number: 4653982Abstract: A windmill construction embodying an improved arrangement for driving a load through a centrifugal clutch and for adjusting the pitch angle of the blades. The adjusting mechanism is responsive to speed so as to increase the pitch angle as the speed increases and further incorporates a latch mechanism for latching the blades in a maximum feathering pitch angle and for introducing a hysteresis effect into the mechanism.Type: GrantFiled: March 30, 1984Date of Patent: March 31, 1987Assignee: Yamaha Hatsudoki Kabushiki KaishaInventors: Noboru Kojima, Kinya Kitagawa
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Patent number: 4630132Abstract: A helical scan type magnetic recording/reproducing apparatus in which a magnetic tape is guided helically around a rotary magnetic head assembly over an angular range approximating to 360.degree.. Two magnetic heads are disposed relatively closely to each other at an angle smaller than 180.degree.. The rotary magnetic heads assembly performs a single complete rotation for a unit period, for example, one field period. In recording, video signal of the unit period undergoes time axis compression to be compressed to a period corresponding to a scanning period of the heads during which the magnetic heads are in contact with the magnetic tape in each rotation of the head assembly and supplied to alternately the magnetic heads which are so designed that the azimuth angles of the respective gaps differ from each other.Type: GrantFiled: December 7, 1983Date of Patent: December 16, 1986Assignee: Hitachi, Ltd.Inventors: Toshimichi Terada, Noboru Kojima, Akira Shibata
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Patent number: 4554596Abstract: Disclosed is a color video signal recording apparatus wherein the chrominance signal and the luminance signal are separated from the composite color video signal, the luminance signal is transformed into a frequency modulation signal and the chrominance signal is converted to have a lower frequency so that both reformed signals are recorded on a frequency multiplex basis on a recording medium. In processing a TV signal of CCIR system, the chrominance signal is controlled to have a frequency of 3/8 N.multidot.f.sub.H (where N is an odd number) and have its phase shifted by 90.degree. in every horizontal scanning period; in processing a TV signal of NTSC system, the chrominance signal is controlled to have a frequency of 3/8 N.multidot.f.sub.H (where N is an integer) and have its phase shifted by 90.degree. or 180.degree. in every horizontal scanning period, while the control being made such that 1/4 N is an integer in case of 90.degree. phase shift of (3N-2)/4 is an integer in case of 180.degree. phase shift.Type: GrantFiled: November 1, 1982Date of Patent: November 19, 1985Assignee: Hitachi, Ltd.Inventors: Akira Shibata, Noboru Kojima, Tomomitsu Kuroyanagi
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Patent number: 4524380Abstract: A chroma signal recording and reproducing circuit of a magnetic recording and reproducing apparatus having a recording circuit for frequency-modulating a luminance signal of a color video signal, low-frequency converting a chroma signal and frequency-multiplexing those signals for recording and a reproducing circuit for frequency-converting the low-frequency converted chroma signal in a reproduced signal and frequency-demodulating the FM luminance signal to reproduce a color video signal is disclosed. The circuit comprises a chroma signal recording circuit including a first ACC circuit and a first frequency converter connected to the first ACC circuit, and a chroma signal reproducing circuit including a second ACC circuit, a second frequency converter connected to the second ACC circuit, a comb filter connected to the second frequency converter and a deemphasis circuit connected to the output of the comb filter.Type: GrantFiled: December 7, 1982Date of Patent: June 18, 1985Assignee: Hitachi, Ltd.Inventors: Akira Shibata, Keiichi Komatsu, Tomomitsu Kuroyanagi, Noboru Kojima
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Patent number: 4497004Abstract: A picture reproducing apparatus for a helical scanning video tape recorder including an impedance transformer; a video head connected to the input of the impedance transformer; a resonance circuit connected to the output of the impedance transformer; a pre-amplifier connected to the output of the resonance circuit; a feedback resistor connected between the junction of the pre-amplifier and resonance circuit and the output of the pre-amplifier; and an output terminal connected to the output of the pre-amplifier. The impedance transformer has the output impedance four times as high as the input impedance thereof.Type: GrantFiled: June 2, 1982Date of Patent: January 29, 1985Assignee: Hitachi, Ltd.Inventors: Akira Shibata, Makoto Konosu, Teizo Tamura, Koichi Hirose, Kuniaki Miura, Noboru Kojima, Keiichi Komatsu
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Patent number: 4491880Abstract: In a magnetic recording and reproducing apparatus of 2-head helical scan type, an overlapping portion is formed at one end of each video track on a magnetic tape, and a PCM audio signal is recorded on this overlapping portion. Video/audio selective switching circuits are disposed on the input or output side of video and audio recording amplifiers, and video/audio selective switching circuits and video/audio playback equalizer circuits are disposed on the output side of video and audio playback amplifiers. Each of the heads acts as both of a video head and an audio head.Type: GrantFiled: September 22, 1982Date of Patent: January 1, 1985Assignee: Hitachi, Ltd.Inventors: Noboru Kojima, Yoshizumi Watatani, Takao Arai, Takashi Hoshino, Toshifumi Shibuya
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Patent number: 4466026Abstract: A record/reproduce circuit for VTR comprising two normal reproducing heads with different azimuth angles, a special reproducing head with the same azimuth angle as that of the one normal reproducing head, a rotary transformer through which signals from these heads are supplied to a static circuit section, a change-over means for alternately switching a signal from the special reproducing head and a signal from the other normal reproducing head with a different azimuth angle from that of the special reproducing head, a feedback type preamplifier for amplifying the output of the change-over means, and another feedback-type preamplifier for amplifying a signal from the normal reproducing head with the same azimuth angle as that of the special reproducing head.Type: GrantFiled: February 17, 1982Date of Patent: August 14, 1984Assignee: Hitachi, Ltd.Inventors: Kuniaki Miura, Akira Shibata, Noboru Kojima, Keiichi Komatsu, Teizo Tamura, Makoto Konosu, Yasuji Moriyama