Patents by Inventor Seiji Hamada
Seiji Hamada 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).
-
Publication number: 20110304712Abstract: Provided are a stereoscopic display device and stereoscopic display system, and a stereoscopic display device and glasses for stereoscopic video image observation, which are capable of reducing flicker attributable to the influence of a fluorescent lamp while preventing increase in crosstalk. Specifically, provided is a stereoscopic display system provided with: a stereoscopic display device which displays left-eye video images and right-eye video images alternatively in terms of time, the left-eye video images and right-eye video images being based on inputted left-eye video signals and right-eye video signals; and glasses for stereoscopic observation which comprise left-eye shutter and right-eye shutter configured to adjust quantities of light passing through the glasses toward the respective left and right eyes, and with which the left-eye video images and right-eye video images are observed.Type: ApplicationFiled: November 8, 2010Publication date: December 15, 2011Applicant: PANASONIC CORPORATIONInventors: Takahiro KOobayashi, Hiroshi Miyai, Seiji Hamada, Yoshio Umeda
-
Publication number: 20110304709Abstract: A liquid crystal drive unit performs overdrive processing such that when driving a liquid crystal panel so as to increase a brightness toward a target brightness determined by a left-eye video signal or a right-eye video signal, the liquid crystal drive unit drives the liquid crystal panel in accordance with a drive amount corresponding to a brightness of not less than the target brightness and, when driving the liquid crystal panel so as to reduce the brightness toward the target brightness, the liquid crystal drive unit drives the liquid crystal panel in accordance with a drive amount corresponding to a brightness of not more than the target brightness. In the overdrive processing, the drive amount corresponding to the same target brightness differs depending on a scanning position on a display screen of the liquid crystal panel.Type: ApplicationFiled: June 3, 2011Publication date: December 15, 2011Inventors: Yoshio UMEDA, Takahiro Kobayashi, Seiji Hamada, Satoshi Hirotsune
-
Publication number: 20110304657Abstract: Disclosed is a backlight device that reduces elevated black levels and the visibility of flickering when displaying a video. A light-emitting unit (121) is provided with a plurality of light-emitting areas that individually emit illumination light, and illuminates a liquid crystal panel (110) with the illumination light from the plurality of light-emitting areas. A motion detection unit (150) detects image motion from an image signal. A brightness control unit (130) acquires a brightness determination reference value for each light-emitting area on the basis of the image signal, and in regards to each of the plurality of light-emitting areas, weights the acquired brightness determination reference value for each of the one or more light-emitting areas that constitute a weighting region and determines the light emission brightness value for each of the light-emitting areas on the basis of the weighting results.Type: ApplicationFiled: September 28, 2010Publication date: December 15, 2011Applicant: PANASONIC CORPORATIONInventors: Akihiro Yamamura, Takahiro Kobayashi, Yoshio Umeda, Hideyuki Nakanishi, Toshiki Onishi, Seiji Hamada
-
Patent number: 8077121Abstract: The present invention sufficiently reduces unwanted radiation in a plasma display panel (PDP) display device. The display device includes a PDP having a pair of electrodes, a first, a second, and a third conductive member, and a pair of driving circuits used to apply a voltage to their respective electrodes. Each conductive member has substantially the same width and height as the PDP, and the first, second, third conductive members are disposed on the rear surface of the PDP, in this order on the rear side of the PDP. The PDP and the conductive members are connected electrically to one another in the end portions of these elements, either directly or via the driving circuits, so that the direction of the current flowing in the PDP during driving and discharge coincides with the direction of the current flowing in the third conductive member, and is opposite from the direction of the current flowing in the first conductive member and the second conductive member.Type: GrantFiled: December 3, 2008Date of Patent: December 13, 2011Assignee: Panasonic CorporationInventors: Kei Ichikawa, Hirotsugu Fusayasu, Hiroshi Kunimoto, Seiji Hamada, Ryo Matsubara
-
Publication number: 20110234777Abstract: A stereoscopic display apparatus and a stereoscopic display system capable of reducing flicker due to the influence of a fluorescent lamp while preventing an increase in crosstalk.Type: ApplicationFiled: November 1, 2010Publication date: September 29, 2011Applicant: PANASONIC CORPORATIONInventors: Takahiro Kobayashi, Hiroshi Miyai, Seiji Hamada, Katsuo Saigo, Yoshio Umeda
-
Patent number: 8027391Abstract: A differential transmission line connector with little unwanted radiation noise is provided. A connector connects a differential transmission pattern for multiple transmission of a group of three differential signals and a differential transmission cable. The differential transmission pattern is provided with three signal lines, and the differential transmission cable also is provided with three signal lines. In a plane that is perpendicular to the longitudinal direction of the differential transmission pattern and the differential transmission cable, the signal lines are positioned at the apexes of an equilateral triangle.Type: GrantFiled: June 26, 2008Date of Patent: September 27, 2011Assignee: Panasonic CorporationInventors: Ryo Matsubara, Hirotsugu Fusayasu, Shinichi Tanimoto, Seiji Hamada
-
Patent number: 8014169Abstract: The present invention provides a shield structure for an electronic device allowing conductive members to be connected electrically to each other at low impedance while preventing the leakage of electromagnetic waves effectively. The first conductive member and the second conductive member for enclosing the electronic device respectively have laid portions that are laid one on the other and fastened to each other at plural positions by means of screw members. Through-holes into which the screw members are to be inserted are formed on both of the laid portions. Protruding portions, which protrude toward the laid portion of the second conductive member, each are formed between the adjacent through-holes on the laid portion of the first conductive member. The protruding portions each have a shape extending in the direction connecting the adjacent through-holes and bulging from both ends toward the center thereof in a smooth curve.Type: GrantFiled: December 3, 2008Date of Patent: September 6, 2011Assignee: Panasonic CorporationInventors: Seiji Hamada, Masaaki Ofuji, Takatoshi Kubiura, Ichiro Hirose, Hirotsugu Fusayasu, Ryo Matsubara, Kei Ichikawa, Hiroshi Kunimoto
-
Patent number: 7986620Abstract: To improve accuracy for verifying reception in the data transmission utilizing the common channel. A radio communication apparatus for transmitting the data to the transmitting destination apparatus selected from a plurality of transmitting destination apparatuses using the shared channel, comprises a control unit for controlling data transmission and a path search unit for identifying the transmitting destination apparatus as the object of the path search in accordance with control of data transmission.Type: GrantFiled: July 8, 2005Date of Patent: July 26, 2011Assignee: Fujistu LimitedInventor: Seiji Hamada
-
Patent number: 7983347Abstract: In a signal transmitter for a multiple differential transmission system including the signal transmitter, a signal receiver, and a signal transmission path including first to third signal lines, first to third differential driver transmit first to third output signals and inverted first to third output signals from the first to third output signals responsive to first to third bit information signals, the first output signal and the inverted third output signal are combined and transmitted to the first signal line, the second output signal and the inverted first output signal are combined and transmitted to the second signal line, and the third output signal and the inverted third output signal are combined and transmitted to the first signal line. The first to third differential drivers of the signal receiver detect polarities of terminal voltages generated across terminal resistances connected between adjacent signal lines and output bit information signals.Type: GrantFiled: April 25, 2007Date of Patent: July 19, 2011Assignee: Panasonic CorporationInventors: Seiji Hamada, Shin-ichi Tanimoto, Hirotsugu Fusayasu
-
Publication number: 20110159870Abstract: A wireless base station apparatus performing wireless communication with a mobile station apparatus includes: a transmission unit to transmit data to the mobile station apparatus; a reception unit to receive a delivery result for the data from the mobile station apparatus; and a control unit to determine whether reception processing through a first channel is performed or parallel reception processing through the first channel and a second channel is performed on the basis of a radio line quality between the wireless base station apparatus and the mobile station apparatus or an amount of processing in the reception unit if the transmission unit transmits a permission notification permitting the transmission through the first channel to the mobile station apparatus, where the reception unit performs the reception processing in accordance with the result of the determination to receive the delivery result transmitted through the first channel or the second channel.Type: ApplicationFiled: December 23, 2010Publication date: June 30, 2011Applicant: FUJITSU LIMITEDInventor: Seiji Hamada
-
Publication number: 20110119263Abstract: The present invention provides an information collection apparatus, an information collection method, and a program capable of collecting information from information resources on a network effectively as well as a search engine that searches the information resources collected.Type: ApplicationFiled: August 14, 2009Publication date: May 19, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Seiji Hamada, Makoto Yamamoto
-
Patent number: 7940006Abstract: A plasma display device includes: a plasma display panel; a front glass; a conductive filter attached to a front surface or a back surface of the front glass; a back cover; and a plurality of glass pressing pieces each of which presses a corresponding one of four sides of the front glass and makes the conductive filter and the back cover be connected electrically. Among the plurality of glass pressing pieces, glass pressing pieces disposed on one pair of opposite sides of the front glass are electrically connected with the conductive filter at the front surface side thereof, and glass pressing pieces disposed on the other pair of opposite sides of the front glass are electrically connected with the conductive filter at the back surface side thereof.Type: GrantFiled: January 21, 2009Date of Patent: May 10, 2011Assignee: Panasonic CorporationInventors: Kei Ichikawa, Masaaki Ofuji, Seiji Hamada
-
Publication number: 20100259706Abstract: A light-emitting device includes a light-emitting element 110; and a lens section 132 covering over the light-emitting element 110. The lens section 132 includes an entrance surface S1 on which light from the light-emitting element 110 is incident; an exit surface S2 from which the light incident on the entrance surface S1 is emitted; and an optical axis L extending so as to penetrate the entrance surface S1 and the exit surface S2. A concave section 132a is formed in an area of the exit surface S2, which contains the optical axis L, and two flat sections 132b are formed so as to face each other across the optical axis L. The exit surface S2 defines an upwardly-protruding curved surface formed between the two flat sections 132b, and the optical axis L is coincidence with a reference optical axis of the light-emitting element 110.Type: ApplicationFiled: June 22, 2009Publication date: October 14, 2010Inventors: Takashi Kuwaharada, Tooru Aoyagi, Hiroshi Yamaguchi, Seiji Hamada, Motonobu Yoshikawa
-
Publication number: 20100220048Abstract: The backlight apparatus allows brightness control with minimum image quality deterioration.Type: ApplicationFiled: March 18, 2010Publication date: September 2, 2010Applicant: PANASONIC CORPORATIONInventors: Akihiro YAMAMURA, Takahiro KOBAYASHI, Hideyuki NAKANISHI, Toshiki ONISHI, Seiji HAMADA, Atsushi NAKANISHI
-
Patent number: 7781677Abstract: A transmission cable that has three signal lines, and in which there is little unwanted radiation noise, is provided. In a section that is perpendicular to the longitudinal direction of the differential transmission cable, the distance between any two signal lines of the three signal lines is equal to a predetermined value. The differential transmission cable is twisted in its longitudinal direction. The differential transmission cable further includes a dielectric core line, and the signal lines are formed on the surface of the dielectric core line. In the differential transmission cable, the signal lines are formed in a helix in the longitudinal direction of the dielectric core line.Type: GrantFiled: June 9, 2008Date of Patent: August 24, 2010Assignee: Panasonic CorporationInventors: Ryo Matsubara, Hirotsugu Fusayasu, Shinichi Tanimoto, Seiji Hamada
-
Publication number: 20100209648Abstract: A laminated glass (10) has a structure in which seven sheet glasses (20) and six PVB resin layers (30) are laminated alternately. A laminated region from a transparent surface (10a) on one side to 4.0 mm comprises two 0.7 mm-thick glass layers formed of two sheet glasses (20), one 0.8 mm-thick glass layer formed of the portion (20c) of one 1.5 mm-thick sheet glass (20) positioned in the laminated region, and two adhesion layers (30) with thicknesses of 1.3 mm and 0.5 mm. Each of the adhesion layers is interposed between the glass layers and is adhered to the glass layers. The laminated region with a depth of 4.0 mm from a transparent surface (10b) on the other side also has the same laminated structure as that in the above laminated region.Type: ApplicationFiled: September 25, 2008Publication date: August 19, 2010Applicant: NIPPON ELECTRIC CO., LTDInventors: Narutoshi Shimatani, Seiji Hamada
-
Patent number: 7741876Abstract: A differential transmission line that has three or more signal lines and with which there is little unwanted radiation noise is provided. The differential transmission line 2 is provided with three signal lines 2a, 2b, and 2c that transmit differential signals from a differential driver IC1 to a differential receiver IC3, and the majority of the signal lines 2a, 2b, and 2c is provided in conductor layers T2 and T3 of a printed circuit board 4.Type: GrantFiled: April 24, 2008Date of Patent: June 22, 2010Assignee: Panasonic CorporationInventors: Hirotsugu Fusayasu, Seiji Hamada, Shinichi Tanimoto, Ryo Matsubara
-
Patent number: 7692563Abstract: In a signal transmitter for a multiple differential transmission system including a signal transmitter and a signal receiver connected via three signal lines, first and second differential drivers generate first and second output signals of bipolar four values and having a first signal voltage level, and inverted first and second output signals, responsive to first and second bit information signals. A third differential driver generates a third output signal of bipolar four values having a second signal voltage level, and an inverted third output signal, responsive to a third bit information signal. The first output signal and the inverted third output signal are combined and transmitted to the first signal line, the second output signal and the inverted first output signal are combined and transmitted to the second signal line, and the third output signal and the inverted second output signal are combined and transmitted to the third signal line.Type: GrantFiled: April 25, 2007Date of Patent: April 6, 2010Assignee: Panasonic CorporationInventors: Seiji Hamada, Hirotsugu Fusayasu, Shin-ichi Tanimoto, Ryo Matsubara
-
Publication number: 20100027706Abstract: A signal transmitter apparatus generates three phase-shifted signals by shifting three transmission signals by predetermined phase shift amounts so that the phase shift amounts of the transmission signals are different from each other by 120 degrees. The signal transmitter apparatus generates three combined transmission signals and outputs the three combined transmission signals to the three transmission conductors, respectively, by combining each of pairs of the phase-shifted signals such that an inverted signal of a first phase-shifted signal is combined with a second phase-shifted signal, when each of the pairs of the phase-shifted signals includes the first and second phase-shifted signals among the three phase-shifted signals and phase shift amounts of the first and second phase-shifted signals are different from each other by 120 degrees.Type: ApplicationFiled: October 3, 2007Publication date: February 4, 2010Inventors: Shin-ichi Tanimoto, Seiji Hamada, Hirotsugu Fusayasu, Ryo Matsubara
-
Publication number: 20090216752Abstract: A search system can include a server, a token assignment unit for assigning types of tokens based on different kinds of character string analysis methods, an index generating unit for generating an index list that associates the tokens assigned with the token assignment unit, a type identification value for identifying a type of the character string analysis, and information, a search unit that receives a search word for referencing the information to combine types of search tokens generated from the search word to generate a single search command for parallel inquiry of the information to search for the information, and a search result generating unit for displaying information extracted in relation to the search word through parallel inquiry with the search unit and search tokens so as to identify the tokens.Type: ApplicationFiled: February 16, 2009Publication date: August 27, 2009Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: FUMIHIKO TERUI, SEIJI HAMADA