Patents Assigned to Hitachi Video and Information Systems, Inc.
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Patent number: 8098695Abstract: A multiplexed audio data decoder apparatus is provided in which integration of an audio decoder is easy, and has a high flexibility when the number of the formats to be processed is increased or when the specification is changed. In an external ROM 60 there are accumulated a plurality of decoding program codes corresponding to respective plural methods for compressing and encoding. A controller 50 transfers the decoding program code corresponding to the method for compressing and encoding after changing thereof, from the external ROM 60 to an internal RAM 25. A DSP 22 starts decoding processing by using the decoding program code which is transmitted into the internal RAM 25.Type: GrantFiled: September 23, 2008Date of Patent: January 17, 2012Assignees: Hitachi, Ltd., Hitachi Video and Information Systems, Inc.Inventors: Yukio Fujii, Shinichi Obata, Hiroaki Shirane, Eiji Yamamoto
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Patent number: 8094112Abstract: A display apparatus comprising a plurality of pixel portions arranged in a matrix, a signal driver circuit which generates apply voltages corresponding to display data, and applies the apply voltages to the pixel portions, a scan driver circuit which applies a selecting voltage to selected ones of the pixel portions, and a level shifter circuit which converts a voltage level of the display data into a drive voltage level of the signal driver circuit, thereby producing level-shifted display data. The signal driver circuit generates the apply voltages based on the level-shifted display data.Type: GrantFiled: February 7, 2006Date of Patent: January 10, 2012Assignees: Hitachi, Ltd., Hitachi Video & Information System, Inc.Inventors: Tsutomu Furuhashi, Makiko Ikeda, Naruhiko Kasai, Toshio Futami, Tetsuya Suzuki
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Publication number: 20090287606Abstract: An electronic money transferring method that enables the payment of electronic money through an electronic money transferring system with reliability. An external information processor is operated to enter the product number of a desired product, and then a host apparatus sends information about electronic money information indicating an amount of money necessary for purchasing the product, etc. to a control unit. The data processing unit reads electronic money information indicating the amount of money from an IC card. The electronic money information is transferred to the host apparatus.Type: ApplicationFiled: July 23, 2009Publication date: November 19, 2009Applicants: HITACHI, LTD., HITACHI VIDEO AND INFORMATION SYSTEM, INC.Inventors: Yutaka TAKAMI, Shigeyuki ITOH, Kenji MATSUMOTO, Masayuki INOUE, Koichi YONETA, Tetsuharu INAMITSU
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Patent number: 7447241Abstract: A multiplexed audio data decoder apparatus is provided in which integration of an audio decoder is easy, and has a high flexibility when the number of the formats to be processed is increased or when the specification is changed. In an external ROM 60 there are accumulated a plurality of decoding program codes corresponding to respective plural methods for compressing and encoding. A controller means 50 transfers the decoding program code corresponding to the method for compressing and encoding after changing thereof, from the external ROM 60 to an internal RAM 25. A DSP 22 starts decoding processing by using the decoding program code which is transmitted into the internal RAM 25.Type: GrantFiled: September 22, 2004Date of Patent: November 4, 2008Assignees: Hitachi, Ltd., Hitachi Video and Information Systems, Inc.Inventors: Yukio Fujii, Shinichi Obata, Hiroaki Shirane, Eiji Yamamoto
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Patent number: 7432897Abstract: A liquid crystal display device for displaying video data having a detection circuit for detecting a luminance distribution based on video data which is inputted, the luminance distribution being indicative of generation frequency of gradations in each of divided region which includes a plurality of gradations. The display device includes a determination circuit for determining at least one of a plurality of divided regions of higher generation frequency of gradation than that of other divided regions based on the luminance distribution, a correction circuit for correcting the video data so as to make a luminance characteristic of the at least one of the plurality of divided regions of higher generation frequency of gradation more abrupt than a luminance characteristic of the other divided regions, and a liquid crystal display panel for displaying the corrected video data. A width of the divided region is changeable.Type: GrantFiled: January 21, 2005Date of Patent: October 7, 2008Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc., Hitachi Microsoftware Systems, Inc.Inventors: Shigeyuki Nishitani, Takeshi Maeda, Kazuyoshi Kawabe, Hiroshi Kurihara, Tetsuo Takagi, Toshiaki Ohashi
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Patent number: 7346579Abstract: On the basis of information which is the standard for transaction conditions such as amount information in an IC card as well as age information registered in the IC card or a predetermined contract destination, a transaction when electronic money is used and restrictions and conditions for program audience are automatically set.Type: GrantFiled: October 30, 2001Date of Patent: March 18, 2008Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc.Inventors: Kenji Matsumoto, Shigeyuki Itoh, Yutaka Takami, Masayuki Inoue, Iwao Aizawa
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Patent number: 7278029Abstract: An IC card and a method thereof for adding or changing a program for a memory for writing without adversely affecting the function of the IC card and by keeping the security of a program to be written later by restricting writing by a write control program having a decryption function or a program code conversion functionType: GrantFiled: February 5, 2003Date of Patent: October 2, 2007Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc.Inventors: Masayuki Inoue, Shigeyuki Itoh, Yutaka Takami, Kenji Matsumoto
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Patent number: 7227825Abstract: A signal recording/reproducing apparatus includes a first power source unit which generates necessary electric power signals from a commercial power source, a second power source unit which generates a necessary electric power signal from a battery, a recording signal processing unit, and a reproduced signal processing unit. The apparatus further includes time measuring instrument which is supplied with the electric power from the second power source unit, and a charging unit which charges the battery with the electric charges. Whenever the time measuring instrument measures a predetermined time, the generation of the electric power signals from the first power source unit is started, and the battery is charged with the electric charges by the charging unit.Type: GrantFiled: January 13, 2004Date of Patent: June 5, 2007Assignees: Hitachi, Ltd., Hitachi Video & Information System, Inc.Inventors: Kouji Minabe, Yukio Nakamura, Shoji Ohno, Ko Kumagai, Kenji Sano
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Patent number: 7152978Abstract: A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.Type: GrantFiled: October 26, 2004Date of Patent: December 26, 2006Assignee: Hitachi, Ltd., and Hitachi Video and Information Systems, Inc.Inventors: Nobuhiko Konuma, Hidetomo Yoshimura, Seiichi Sekiguchi, Mikiharu Kuwata, Masaharu Deguchi, Takashi Kakuda, Yutaka Matsuda, Takuya Shiaki, Futoshi Yamasaki, Atsushi Ishibashi, Koichi Umezawa, Takeshi Hoshino, Shigehisa Hagura, Makoto Fukatsu, Nobuyuki Kaku, Kenji Fuse, Satoshi Ohuchi, Tomohiro Miyoshi, Naohiro Ozawa, Masahiko Yatsu, Yasuo Otsuka, Takesuke Maruyama
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Patent number: 7113163Abstract: The present invention includes a panel on which a plurality of pixels are located, a light-source for visualizing an image displayed on the plurality of pixels, a controlling circuit for controlling the light-source, and an image-signal tone characteristic controlling circuit. Moreover, the light-source controlling circuit has a function of repeating a period. Here, the period includes a 1st time-period during which an electric current having a 1st intensity is fed to the light-source, and a 2nd time-period during which an electric current having a 2nd intensity differing from the 1st intensity is fed to the light-source. The light-source controlling circuit controls the 1st time-period and the 2nd time-period in accordance with display information. Also, in accordance with the display information as well, the tone characteristic controlling circuit is controlled so that the excellent contrast will be always available.Type: GrantFiled: June 26, 2001Date of Patent: September 26, 2006Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc.Inventors: Hiroyuki Nitta, Takeshi Maeda, Kazuyoshi Kawabe, Junichi Hirakata
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Patent number: 7061511Abstract: A liquid crystal display device in which the time necessary for luminance to change from application of a different gray-scale voltage exceeds one frame period in relation to the response as a luminance change time of the liquid crystal. The liquid crystal display device includes a signal control circuit for preventing the content of a preceding frame from being displayed as an after-image and preventing also deterioration of image quality. The signal control circuit includes a frame memory for delaying by one frame the first display data inputted from the external device, an arithmetic operation circuit for comparing the second display data stored in the frame memory and delayed by one frame with the first display data, and an addition/subtraction circuit for adding and subtracting correction data outputted by the arithmetic operation circuit to and from the first display data.Type: GrantFiled: January 14, 2004Date of Patent: June 13, 2006Assignees: Hitachi, Ltd., Hitachi Video & Information System, Inc.Inventors: Tsutomu Furuhashi, Tatsuhiro Inuzuka, Hiroshi Kurihara, Kikuo Ono
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Patent number: 7038649Abstract: A display apparatus comprising a plurality of pixel portions arranged in a matrix, a signal driver circuit which generates apply voltages corresponding to display data, and applies the apply voltages to the pixel portions, a scan driver circuit which applies a selecting voltage to selected ones of the pixel portions, and a level shifter circuit which converts a voltage level of the display data into a drive voltage level of the signal driver circuit, thereby producing level-shifted display data. The signal driver circuit generates the apply voltages based on the level-shifted display data.Type: GrantFiled: May 7, 2002Date of Patent: May 2, 2006Assignees: Hitachi, Ltd., Hitachi Video & Information System, Inc.Inventors: Tsutomu Furuhashi, Makiko Ikeda, Naruhiko Kasai, Toshio Futami, Tetsuya Suzuki
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Patent number: 7020833Abstract: Data synchronization detection is provided between data identification and code demodulation in a data reproduction system, which performs data synchronization detection using code-modulated data. A specified bit pattern generated in a data codeword is calculated in each phase (bit), using a specified bit sequence pattern that is not generated in a specified phase of the data codeword. For example, a specified bit sequence pattern is generated only in a specified phase of the codeword). The positions of the data codeword partitions are thereby identified. Scrambling is then applied to the write data as required in order to ensure accurate synchronization detection.Type: GrantFiled: August 16, 2001Date of Patent: March 28, 2006Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc.Inventors: Yoshiju Watanabe, Yasuyuki Ito
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Patent number: 6980385Abstract: In order to generate a sampling clock having a higher accuracy, a synchronous signal generating circuit is provided with a phase error detector, detecting a phase error of a read out signal digitized on the basis of FDTS algorithm, and a VCO, controlling an oscillation frequency on the basis of a phase error detected by the phase error detector, to generate a synchronous signal by the VCO. On the basis of the synchronous signal generated by the synchronous signal generating circuit, an ADC digitizes the read out signal. The digitized read out signal is then converted to binary data by a detection circuit.Type: GrantFiled: August 10, 2004Date of Patent: December 27, 2005Assignees: Hitachi Video and Information System, Inc., Hitachi Global Storage Technologies Japan, Ltd.Inventors: Takatoshi Kato, Takushi Nishiya, Hideyuki Yamakawa, Takashi Nara, Nobuaki Nakai, Hiroshi Ide, Shintaro Suzumura, Terumi Takashi
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Patent number: 6976625Abstract: A processor automatically sets a direction of transferring electronic money information depending on the existence of IC cards connected to IC connecting portions and the existence of an external device connected to an external device connecting terminal, thus making instructing operations for transferring electronic money information easier.Type: GrantFiled: March 30, 2004Date of Patent: December 20, 2005Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc.Inventors: Yutaka Takami, Kenji Matsumoto, Shigeyuki Itoh, Masayuki Inoue
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Patent number: 6938165Abstract: An IC card and a method thereof for adding or changing a program for a memory for writing without adversely affecting the function of the IC card and by keeping the security of a program to be written later by restricting writing by a write control program having a decryption function or a program code conversion function.Type: GrantFiled: August 22, 2001Date of Patent: August 30, 2005Assignees: Hitachi, Ltd., Hitachi Video and Information Systems, Inc.Inventors: Masayuki Inoue, Shigeyuki Itoh, Yutaka Takami, Kenji Matsumoto
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Patent number: 6925532Abstract: A disk array controller connected in a star configuration with a plurality of interfaces each having a processor, a shared memory connected to the interfaces by access paths and a common bus connected to the interfaces. The shared memory transmits interruption signals to the interface by way of control signals when one of the processors writes broadcast data into the shared memory.Type: GrantFiled: October 1, 2003Date of Patent: August 2, 2005Assignees: Hitachi, Ltd., Hitachi Software Engineering Company, Ltd., Hitachi Video and Information System Inc.Inventors: Akira Fujibayashi, Atsushi Tanaka, Nobuyuki Minowa, Hikari Mikami, Hisashi Nanao
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Patent number: 6862021Abstract: A display apparatus includes a display having a plurality of pixels, and a controller which selects a pattern corresponding to a gradation of gradation data. On-state pixels are added to a pattern corresponding to one gradation of the gradation data to obtain a pattern corresponding to another gradation of the gradation data higher than the one gradation of the gradation data while maintaining unchanged an arrangement of on-state pixels in the pattern corresponding to the one gradation of the gradation data.Type: GrantFiled: March 5, 2002Date of Patent: March 1, 2005Assignees: Hitachi, Ltd., Hitachi Video & Information System, Inc.Inventors: Yasuyuki Kudo, Tsutomu Furuhashi, Hiroyuki Mano, Shinji Uchida, Tatsuhiro Inuzuka, Takeshi Maeda, Satoshi Konuma
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Patent number: 6850214Abstract: A luminance characteristic of inputted video data is determined by input video image characteristic detection sections, and polygonal line point master data and polygonal line point correction data are calculated based on the luminance characteristic so as to provide a satisfactory display state using a microcomputer and are outputted to the polygonal line generation sections. The polygonal line point data determining the output gradation characteristic is calculated in polygonal point generation sections and outputted to inter-point gradation operation sections, and operation processing is conducted by using the polygonal point data and the inputted video data in the inter-point operation sections to determine the inter-point gradation and outputted to a display panel.Type: GrantFiled: March 26, 2001Date of Patent: February 1, 2005Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc., Hitachi Microsoftware Systems, Inc.Inventors: Shigeyuki Nishitani, Takeshi Maeda, Kazuyoshi Kawabe, Hiroshi Kurihara, Tetsuo Takagi, Toshiaki Ohashi
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Patent number: 6827258Abstract: A processor automatically sets a direction of transferring electronic money information depending on the existence of IC cards connected to IC connecting portions and the existence of an external device connected to an external device connecting terminal, thus making instructing operations for transferring electronic money information easier.Type: GrantFiled: March 18, 2002Date of Patent: December 7, 2004Assignees: Hitachi, Ltd., Hitachi Video and Information System, Inc.Inventors: Yutaka Takami, Kenji Matsumoto, Shigeyuki Itoh, Masayuki Inoue