1
Suzuki Toshinori: Sub carrier assignment method for wireless communication system. Kddi, August 31, 2001: JP2001-238269 (156 worldwide citation)

PROBLEM TO BE SOLVED: To provide a subcarrier assignment method for a wireless communication system by which a subcarrier providing a deteriorated reception state causing degradation in the transmission efficiency to a concerned wireless station cannot be assigned thereto.SOLUTION: The method of thi ...


2
Ri Keisan, Ozeki Takeo, Ishikawa Hiroyasu, Shinonaga Hideyuki: Transmission apparatus, system, and method using ofdm and mc-cdma. Kddi, June 3, 2004: JP2004-158901 (62 worldwide citation)

PROBLEM TO BE SOLVED: To provide a transmission apparatus, system, and method with respect to mobile communication, the apparatus and the system composing cells, to solve respective defects in the OFDM and the MC-CDMA.SOLUTION: The transmission apparatus includes: an OFDM transmission means; and an ...


3
Takemori Keisuke, Oda Toshichika: Game system and its game server and game terminal unit. Kddi, December 11, 2001: JP2001-340656 (37 worldwide citation)

PROBLEM TO BE SOLVED: To provide a game system wherein a play feeling with a high reality can be obtained, which does not quickly become hackneyed, and of which the life is long, its game server and a game terminal unit.SOLUTION: This game terminal unit G is connected to this game server 1 which per ...


4
Miyazaki Noriaki, Suzuki Toshinori: Transmitter and receiver. Kddi, September 9, 2004: JP2004-253899 (35 worldwide citation)

PROBLEM TO BE SOLVED: To provide a transmitter and a receiver for coping with diversified transmission conditions that are requirements whereby satisfactory communication quality can be obtained under various communication environments.SOLUTION: The receiver side informs the transmitter side about a ...


5
Meido Emi, Sakasawa Shigeyuki, Takishima Yasuhiro: Method and device for embedding bar code in color image, and computer program. Kddi, February 14, 2008: JP2008-033625 (35 worldwide citation)

PROBLEM TO BE SOLVED: To embed a bar code in a color image inconspicuously in a large visual distance while separating the bar code appropriately in a small visual distance and to make it readable by a general-purpose bar code reader.SOLUTION: A bar code embedding part in the color image is obtained ...


6
Emi Myodo, Shigeyuki Sakazawa, Yasuhiro Takishima: Method, apparatus and computer program for embedding barcode in color image. KDDI Corporation, Westerman Hattori Daniels & Adrian, October 8, 2013: US08550366 (34 worldwide citation)

A barcode-embedding area is obtained in a color image based on expression possibility by the juxtaposed additive color mixture and possibility of reading of pixels separately by a barcode reader (S11), a color image in the barcode-embedding area is expressed by the juxtaposed additive color mixture, ...


7
Kimura Junichi, Yokoyama Toru, Suzuki Norihiro, Wada Masahiro, Takishima Yasuhiro, Sakasawa Shigeyuki, Miyaji Satoshi: Media conversion method and media conversion device. Hitachi, Kddi, April 18, 2003: JP2003-114845 (33 worldwide citation)

PROBLEM TO BE SOLVED: To solve the problem in a conventional image format that it cannot be directly applied when regenerating contents from the middle or in a stream encoded at real time.SOLUTION: In this method and device, the moof 23 part of an original stream 53 is converted to moov 71 in the co ...


8
Hiromasa Yanagihara, Akio Yoneyama, Yasuyuki Nakajima: Video information transmission system, and apparatus and program used for video information transmission system. KDDI Corporation, Westerman Hattori Daniels & Adrian, March 11, 2008: US07342880 (31 worldwide citation)

This invention provides a video information transmission apparatus for efficiently transmitting a digital video such as MPEG video at real time while controlling congestion on a QoS non-guaranteed IP network and suppressing degradation of a video quality. A transmission control section 13 on a sende ...


9
Yamazaki Kosuke, Yonezawa Takeya, Tani Kazunori: Radio communication system and radio communication control method. Kddi, May 24, 2007: JP2007-129405 (24 worldwide citation)

PROBLEM TO BE SOLVED: To provide a wide-area cell system and a pico cell system through a single radio communication system.SOLUTION: The radio communication system is equipped with a control means for arranging a wide-area cell 100 providing a radio connection service area of a specified radio comm ...


10
Lee Kyesan, Ohseki Takeo, Ishikawa Hiroyasu, Shinonaga Hideyuki: Transmitter which selects between ofdm and mc-cdma. Kddi, May 5, 2004: GB2394871-A (23 worldwide citation)

A transmitter device comprises an OFDM transmission unit, a multi-carrier CDMA transmission unit, and a control unit for selecting either the OFDM transmission unit or the multicarrier-CDMA transmission unit in response to propagation conditions. The propagation conditions are a distance from the re ...



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