Patents Assigned to Matsushita Electric Ind. Co., Ltd.
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Patent number: 6573668Abstract: A color cathode ray tube using a self-convergence method is provided with magnets for correcting top/bottom pincushion distortion, and includes a vertical deflection coil and a four-pole coil. The vertical deflection coil generates a first correction field distorted in a barrel shape. The four-pole coil is arranged on the side of a deflection yoke nearer to an electron gun, and corrects YH barrel pattern misconvergence by generating a second correction field. The strength of the second correction field varies according to the amount of vertical deflection applied to electron beams emitted by the electron gun.Type: GrantFiled: September 25, 2000Date of Patent: June 3, 2003Assignee: Matsushita Electric Ind., Co., Ltd.Inventor: Etsuji Tagami
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Publication number: 20030091005Abstract: To provide a contactless communication system that can reduce a time required to complete an identification of all data carriers that exist around a reader/writer and thus attempt to speed up its processing. According to the contactless communication system, multiple data carriers detect a response requesting command from an access device and send back an individual response signal for one-bit information to the access device at a time that is ordered based on a portion of each carrier's identification information, and the access device monitors individual slots for the response signals and determines that detection of the presence of data carriers is completed when it has obtained individual signals from the data carriers, thereby reducing the time required to complete the identification of all data carriers.Type: ApplicationFiled: October 22, 2002Publication date: May 15, 2003Applicant: MATSUSHITA ELECTRIC IND. CO., LTD.Inventors: Yuichiro Nakai, Shota Nakashima
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Publication number: 20020080839Abstract: Based on an oscillation ON/OFF signal and an output state instruction signal output to a high-voltage generating circuit (101) from a power supply control apparatus (301), heater voltage applied from a heater circuit (201) to a heater of a magnetron (2) is controlled depending on whether the magnetron (2) is stopped from oscillating or is continuously or intermittently operating. The heater voltage of the magnetron (2) measured during the intermittent operation is controlled to be higher than that measured during the continuous output and to be lower than that measured while the oscillation is stopped, thereby reducing the change in temperature of the heater and providing a lower limit temperature at which the magnetron (2) can oscillate stably. This configuration increases the service life of the magnetron (2) used for a microwave excitation laser.Type: ApplicationFiled: February 28, 2002Publication date: June 27, 2002Applicant: Matsushita Electric Ind. Co., Ltd.Inventors: Yutaka Iwasaki, Masahiko Kubo
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Patent number: 6397319Abstract: A 32-bit instruction 50 is composed of a 4-bit format field 51, a 4-bit operation field 52, and two 12-bit operation fields 59 and 60. The 4-bit operation field 52 can only include (1) an operation code “cc” that indicates a branch operation which uses a stored value of the implicitly indicated constant register 36 as the branch address, or (2) a constant “const”. The content of the 4-bit operation field 52 is specified by a format code provided in the format field 51.Type: GrantFiled: June 20, 2000Date of Patent: May 28, 2002Assignee: Matsushita Electric Ind. Co., Ltd.Inventors: Shuichi Takayama, Nobuo Higaki
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Patent number: 6351004Abstract: A tunneling transistor is provided as an effective means for miniaturization of a semiconductor integrated circuit having nonvolatile memory. An insulating layer is disposed on a silicon substrate. A source and a drain are disposed on the insulating layer, with an insulator of a few nanometers in thickness that provides a tunnel barrier being interposed between the source and the drain. A ferroelectric layer that exhibits spontaneous polarization is disposed directly above a region of the source that is adjacent to the insulator. With this construction, when the ferroelectric layer is polarized in a predetermined direction, at least a portion of the region of the source adjacent to the insulator forms a depletion region, with it being possible to vary the amount of current tunneling through the insulator depending on whether the ferroelectric layer is polarized or not.Type: GrantFiled: October 16, 2000Date of Patent: February 26, 2002Assignee: Matsushita Electric Ind. Co., Ltd.Inventors: Yasuhiro Shimada, Shinichiro Hayashi, Kiyoshi Uchiyama, Keisuke Tanaka
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Patent number: 5828707Abstract: A differential detecting apparatus includes samplers 1 and 2, differential detection calculating unit 3, and two post-detection filters 4 and 5. Differential detection calculating unit 3 performs a differential detection with time-division multiplexing on data output from these samplers and alternately outputs a data sequence of a part of cosine component of the phase difference of the modulated signal and a data sequence of the rest of the cosine component. Differential detection calculating unit 3 also alternately outputs a data sequence of a part of sine component of the phase difference and a data sequence of the rest of the sine component. Each of post-detection filters 4 and 5 includes linear interpolating filter 35 and integral filter 36 which are connected in series. The linear interpolating filter 35 obtains a moving average from successive three pieces of input data weighted by 1:2:1 and the integral filter 36 obtains an integral value from successive k pieces of input data.Type: GrantFiled: October 21, 1996Date of Patent: October 27, 1998Assignee: Matsushita Electric Ind., Co., Ltd.Inventors: Yoshio Urabe, Hitoshi Takai, Hidetoshi Yamasaki
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Patent number: 5705067Abstract: A body 1 is constructed by mounting a purifier cartridge 23 in a cold-water passage 7 and is equipped with a purified water handle 16 for opening and closing a branch passage leading from the cold-water passage 7 to the purifier cartridge 23. To this body, there is mounted a base 9 which includes a valve functioning part 11 for adjusting the mixing of cold water and hot water coming through the cold-water passage 7 and a hot-water passage 8, and the flow rates of the cold water, the hot water and the mixed water by operating a lever 15. A spout 10 spouts therefrom the cold water, the hot water, their mixed water adjusted by the valve functioning part 11, or the purified water. The purified water handle 16 and the valve functioning part 11 are provided separately, and hence they can be individually replaced when they fail.Type: GrantFiled: July 11, 1996Date of Patent: January 6, 1998Assignees: Kitamuragokin Ind. Co., Ltd., Matsushita Electric Ind. Co., Ltd.Inventors: Yukihiko Sumi, Shuji Nakayama
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Patent number: 5267450Abstract: An air conditioning apparatus including an indoor device having a first heat exchanger, a second heat exchanger, and a radiant panel. Air circulation mode is switched to radiant mode when a room temperature has reached a temperature set by a user. Refrigerant is changeably circulated through the first and second heat exchangers in a cooling operation so that dew is not formed on the radiant panel.Type: GrantFiled: July 20, 1992Date of Patent: December 7, 1993Assignees: Matsushita Electric Ind. Co., Ltd., Matsushita Seiko Co., Ltd.Inventors: Hirozo Takegawa, Tomoko Kitamura, Hisashi Kodama, Hiroyuki Miyamoto
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Patent number: 5011963Abstract: A terminal perfluoroalkylsilane compound F(CF.sub.2).sub.m (CH.sub.2).sub.n Si(CH.sub.3).sub.p X.sub.3-p (m+n=10 to 32 carbon atoms in fluoroalkyl group) is prepared by a hydrosilylation reaction of a terminal perfluoroalkene compounds F(CF.sub.2).sub.m (CH.sub.2).sub.1+q CH.dbd.CH.sub.2 (1+q+2=n) with the hydrodiensilane HSi(CH.sub.3).sub.p X.sup.3.sub.3-p. The F(CF.sub.2).sub.m (CH.sub.2).sub.1+q CH.dbd.CH.sub.2 are synthesized by a Grignard's reaction of a Grignard's reagent X.sup.2 Mg(CH.sub.2).sub.q CH.dbd.CH.sub.2 obtained from a terminal alkenyl halogen compound X.sup.2 (CH.sub.2).sub.q CH.dbd.CH.sub.2 with a terminal fluoroalkyl halogen compound F(CF.sub.2).sub.m (CH.sub.2).sub.1 X.sup.1.The terminal perfluoroalkylsilane compound has a sufficient lubricating effect and is useful for a coating agent with long and continuous lubricity.Type: GrantFiled: February 9, 1989Date of Patent: April 30, 1991Assignees: Matsushita Electric Ind., Co., Ltd., Shin-Etsu Chemical Co., Ltd.Inventors: Kazufumi Ogawa, Hideharu Tamura, Toshinobu Ishihara, Yasuhisa Tanaka, Mikio Endou
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Patent number: 4839883Abstract: There is provided a rewritable tri-layer optical information recording medium of the phase change type having a high sensitivity. In this medium, a reflective layer is formed by a thin film of an Ni-Cr alloy or an Au-Cr alloy.Type: GrantFiled: June 25, 1987Date of Patent: June 13, 1989Assignee: Matsushita Electric Ind. Co., Ltd.Inventors: Kenichi Nagata, Noboru Yamada
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Patent number: 4643911Abstract: A method for the formation of a light-shield coat on a peripheral area of an optical lens other than the effective aperture area, which method is constituted by the steps of mounting the lens on a rotatable lens support means effective to rotate the lens about the optical axis thereof with the peripheral area positioned exteriorly of the lens support means, applying to the peripheral area of the lens a photo-setting, black-colored light shielding paint capable of hardening when exposed to ultraviolet rays to form the light-shield coat on the peripheral area of the lens, and radiating ultraviolet rays onto the peripheral area of the lens, while the latter is rotated, to cause the light-shield coat to harden.Type: GrantFiled: September 26, 1984Date of Patent: February 17, 1987Assignee: Matsushita Electric Ind. Co., Ltd.Inventors: Takao Inoue, Takahiro Matsuo, Youichi Nakamura
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Patent number: 4325070Abstract: A recording head for use in a facsimile communication system comprises a plurality of recording elements each having an effective recording area surrounded by an ineffective area. The recording elements are arranged on a plane in a step-like configuration in which the elements are displaced both longitudinally and transversely with respect to another such that there is a spacing between the effective areas of the recording elements in the longitudinal direction and there is no spacing between them in the transverse direction. The recording head is so oriented that the longitudinal direction corresponds to the direction of line scan.Type: GrantFiled: November 2, 1979Date of Patent: April 13, 1982Assignees: Matsushita Electric Ind. Co., Ltd., Matsushita Graphic Communication Systems, Inc.Inventors: Isamu Akasaki, Masaaki Ohsima, Nobuhide Matsuda, Michio Matsuki, Yoshio Tsukamoto, Hiromichi Kagi, Hidehalu Fukazawa
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Patent number: 4159488Abstract: In a variable speed facsimile transmitter employing a storage mode photodetection array as a line scanner, the array is driven at one of a plurality of selectable clock rates so as to generate a video line signal in response to each clock pulse. The photodetection array is discharged at an instant delayed from the occurrence of the clock pulse by an interval determined by the difference between the selected clock rate and the highest clock rate to discard the video signal available at that instant and then allowed to develop charge during the rest of the interval between clock pulses, whereby a constant magnitude video line signal is derived at the occurrence of each clock pulse regardless of the selected clock rate.Type: GrantFiled: February 13, 1978Date of Patent: June 26, 1979Assignees: Matsushita Electric Ind. Co., Ltd., Matsushita Graphic Communication SystemsInventors: Yutaka Tanaka, Takeshi Kubota, Setsuro Hashimoto
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Patent number: D254787Type: GrantFiled: September 6, 1978Date of Patent: April 22, 1980Assignee: Matsushita Electric Ind. Co., Ltd.Inventors: Shuhei Taguchi, Tsutomu Murakami