Patents by Inventor Yoshio Sakai

Yoshio Sakai 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: 20080050064
    Abstract: A MEMS optical switch device is disclosed that includes an optical system deflecting and outputting light signals; first and second test light generation parts generating and feeding first and second test lights to specific input and output ports, respectively, of the optical system; first and second divergence parts diverging the first and second test lights, respectively, from the optical system; first and second monitoring parts detecting the diverged first and second test lights, respectively; and an operational check part causing the first and second test lights to be incident on output and input deflection parts of the optical system by driving a specific input deflection part corresponding to the specific input port and a specific output deflection part corresponding to the specific output port, respectively, and performing an operational check on the output and input deflection parts from the light levels of the detected first and second test lights, respectively.
    Type: Application
    Filed: November 2, 2006
    Publication date: February 28, 2008
    Inventors: Yoshio Sakai, Kazuyuki Mori
  • Publication number: 20080021349
    Abstract: An abdomen width determiner determines an abdomen width value of a human subject. A memory stores a correlation between abdomen width values and waist circumferences of human beings. A waist circumference calculator calculates a waist circumference of the human subject on the basis of the abdomen width value determined by the abdomen width determiner and the correlation stored in the memory. The correlation stored in the memory may be expressed by the following regression formula: Y=aX+b where “Y” is a waist circumference of a human being, “X” is an abdomen width value of a human being, and “a” and “b” are constants.
    Type: Application
    Filed: July 18, 2007
    Publication date: January 24, 2008
    Inventors: Yoshio Sakai, Hirokazu Ono, Koji Tsuji, Yasuhiro Kasahara
  • Publication number: 20070291283
    Abstract: A linear measurement apparatus includes a measuring unit including at least one first noncontact distance measuring sensor and one second noncontact distance measuring sensor supported at a frame and aligned on opposite sides of a measured object. The measuring unit measures a plurality of first gap distances to a plurality of first object positions in a plurality of parallel first measurement lines and a plurality of second gap distances to a plurality of second object positions in a plurality of parallel second measurement lines. A distance calculator calculates a plurality of candidate object lengths on the basis of the first and second gap distances, each candidate object length being a distance between one of the first object positions and one of the second object positions. A maximum selector selects a maximum object length from among the plurality of candidate object lengths.
    Type: Application
    Filed: May 18, 2007
    Publication date: December 20, 2007
    Inventor: Yoshio Sakai
  • Patent number: 7303927
    Abstract: A ferroelectric capacitor is provided in which the surface area of a ferroelectric thin film is expanded to increase the amount of polarization. In the ferroelectric capacitor, hemi-spherical protruding parts 31 are formed with HSG-growth on the surface of a polycrystalline silicon film 30. On the polycrystalline silicon film 30 having the hemi-spherical protruding parts 31 are sequentially laminated an adhesive layer 32, lower electrode 33, ferroelectric film 34, and upper electrode 35. The ferroelectric film 34 is shaped to overlap the shape of hemi-spherical protruding parts 31 of the polycrystalline silicon film 30, and the surface area thereof is expanded.
    Type: Grant
    Filed: April 29, 2004
    Date of Patent: December 4, 2007
    Assignee: Sony Corporation
    Inventors: Chiharu Isobe, Yoshio Sakai
  • Publication number: 20070230954
    Abstract: A light source supplies optical signal to an optical switch and a detector detects light receiving level. A control unit changes a deflection control amount for changing an angle of a tilt mirror, and outputs the deflection control amount to a driving unit. When an input and an output ports are same, optical offset of the tilt mirror is calculated based on optimal angle at which the light detector detects an optimal point of the light receiving level. Whenever the input and the output port are different, a structure parameter of the tilt mirror is calculated based on the optical offset and the optimal angle. The optical offset and the structure parameter are stored in a memory as a test result.
    Type: Application
    Filed: June 12, 2007
    Publication date: October 4, 2007
    Applicant: FUJITSU LIMITED
    Inventors: Yoshio SAKAI, Yuji Tochio, Kazuyuki Mori, Atsuo Ishizuka
  • Patent number: 7277606
    Abstract: An optical switch device is disclosed that includes an optical system deflecting and outputting input light signals using deflector parts; resistor parts provided in corresponding routes for feeding driving signals output from drivers to the corresponding deflector parts; a signal generator part generating a DC signal and an AC signal and feeding the DC and AC signals to the deflector parts through the corresponding drivers and the corresponding resistors; a threshold generator part generating a first threshold and a second threshold corresponding to the DC and AC signals, respectively; a voltage detector part detecting a voltage across each of the resistor parts; and a failure detector part determining whether the deflector parts are normal or out of order based on the corresponding results of comparing the voltages detected by the voltage detector part with at least one of the first threshold and the second threshold.
    Type: Grant
    Filed: November 3, 2006
    Date of Patent: October 2, 2007
    Assignee: Fujitsu Limited
    Inventors: Yoshio Sakai, Kazuyuki Mori
  • Patent number: 7248514
    Abstract: A semiconductor memory device enabling efficient repair of defects by using limited redundant memory while suppressing a drop of access speed accompanied with the repair of defects of the memory, wherein a first memory array is divided into a plurality of memory regions for each 16 word lines and wherein defective memory addresses in regions are stored in a second memory array. When a memory address for accessing the first memory array is input, the defective memory address of the memory region including the memory to be accessed is read out from the second memory array. In this way, the addresses of defective memory in 16 word lines worth of a memory region are stored in the second memory array 2, therefore addresses of a wider range of defective memory can be stored. For this reason, it becomes possible to repair defects occurring at random efficiently.
    Type: Grant
    Filed: December 1, 2004
    Date of Patent: July 24, 2007
    Assignee: Sony Corporation
    Inventors: Toshiyuki Nishihara, Yoshio Sakai
  • Publication number: 20070165468
    Abstract: A semiconductor memory device enabling efficient repair of defects by using limited redundant memory while suppressing a drop of access speed accompanied with the repair of defects of the memory, wherein a first memory array is divided into a plurality of memory regions for each 16 word lines and wherein defective memory addresses in regions are stored in a second memory array. When a memory address for accessing the first memory array is input, the defective memory address of the memory region including the memory to be accessed is read out from the second memory array. In this way, the addresses of defective memory in 16 word lines worth of a memory region are stored in the second memory array 2, therefore addresses of a wider range of defective memory can be stored. For this reason, it becomes possible to repair defects occurring at random efficiently.
    Type: Application
    Filed: March 12, 2007
    Publication date: July 19, 2007
    Applicant: Sony Corporation
    Inventors: Toshiyuki Nishihara, Yoshio Sakai
  • Patent number: 7239773
    Abstract: A light source supplies optical signal to an optical switch and a detector detects light receiving level. A control unit changes a deflection control amount for changing an angle of a tilt mirror, and outputs the deflection control amount to a driving unit. When an input and an output ports are same, optical offset of the tilt mirror is calculated based on optimal angle at which the light detector detects an optimal point of the light receiving level. Whenever the input and the output port are different, a structure parameter of the tilt mirror is calculated based on the optical offset and the optimal angle. The optical offset and the structure parameter are stored in a memory as a test result.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: July 3, 2007
    Assignee: Fujitsu Limited
    Inventors: Yoshio Sakai, Yuji Tochio, Kazuyuki Mori, Atsuo Ishizuka
  • Patent number: 7077415
    Abstract: A vehicle body is provided with a rear wheel at a rear portion, and a front wheel coupled to a handle post. A swing-enabling shaft is rotatably provided on the upper portion of the handle post. A handlebars unit is attached to the swing-enabling shaft such that it can swing forward and backward relative to the vehicle body. When the handlebars unit is swung, a driving mechanism is driven. The driving mechanism rotates the front wheel such that the vehicle body advances, regardless of whether the handlebars unit is swung forward or backward.
    Type: Grant
    Filed: September 15, 2004
    Date of Patent: July 18, 2006
    Assignee: France Bed Co., Ltd.
    Inventors: Shigeru Ikeda, Shoji Ohshita, Yoshio Sakai
  • Publication number: 20060087893
    Abstract: A storage device able to make a redundant write operation of unselected data unnecessary and able to optimize an arrangement of pages to a state having a high efficiency for rewriting, wherein the storage device has a first memory unit, a second memory unit having a different access speed from the first memory, and a control circuit, wherein the control circuit has a function of timely moving the stored data in two ways between the first memory unit and the second memory unit having different access speeds in reading or rewriting.
    Type: Application
    Filed: October 18, 2005
    Publication date: April 27, 2006
    Applicant: Sony Corporation
    Inventors: Toshiyuki Nishihara, Yoshio Sakai
  • Publication number: 20060088317
    Abstract: A mirror controller of an optical switch comprises a signal generator (10, 82, 83) for passing the optical signal on the same light path as the one for optical communication using the optical switch, and an image analyzer (15, 16, 81) detecting the optical signal as the light scattered by at least one of tilt mirrors (111, 123) and an output collimator array (14). The image analyzer detects the position of the light beam image as a control position (121, 141, 85) based on the scattered light, and controls the tilt mirrors in such a manner that the detected control position coincides with the predetermined desired target position (122, 142, 84, 86) on at least one of the tilt mirrors and the output collimator array. The mirror controller can realize the connection test of the optical signal between input and output with high accuracy and reliability.
    Type: Application
    Filed: January 21, 2005
    Publication date: April 27, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Yuji Ishii, Kazuyuki Mori, Tamotsu Akashi, Yoshio Sakai
  • Publication number: 20060047212
    Abstract: Four first electrodes are attached on the vicinity of a lower right end of a right clavicle, the vicinity of a lower left end of a left clavicle, the vicinity of a position on a right anterior axillary line at the level of a right lowermost rib, a the vicinity of a position on a left anterior axillary line at the level of a left lowermost rib of a living body, so as to correspond to limb leads of a standard 12-lead electrocardiogram (ECG). Two second electrodes are attached on such positions of the living body that correspond to a lead V2 and a lead V4 of chest leads of the standard 12-lead ECG. A first ECG data set corresponding to leads I and II of the standard 12-lead EGG with the first electrodes. A second ECG data set including the leads V2 and V4 with the second electrodes. An instantaneous electromotive force vector (a heart vector) is calculated based on the first and second ECG data sets, and predetermined first lead vectors of the leads I, II, V2 and V4.
    Type: Application
    Filed: August 29, 2005
    Publication date: March 2, 2006
    Inventors: Daming Wei, Yoshio Sakai
  • Publication number: 20050286891
    Abstract: A light source supplies optical signal to an optical switch and a detector detects light receiving level. A control unit changes a deflection control amount for changing an angle of a tilt mirror, and outputs the deflection control amount to a driving unit. When an input and an output ports are same, optical offset of the tilt mirror is calculated based on optimal angle at which the light detector detects an optimal point of the light receiving level. Whenever the input and the output port are different, a structure parameter of the tilt mirror is calculated based on the optical offset and the optimal angle. The optical offset and the structure parameter are stored in a memory as a test result.
    Type: Application
    Filed: June 28, 2004
    Publication date: December 29, 2005
    Applicant: FUJITSU LIMITED
    Inventors: Yoshio Sakai, Yuji Tochio, Kazuyuki Mori, Atsuo Ishizuka
  • Publication number: 20050213178
    Abstract: A controlling apparatus for a spatial optical switch having a deflecting means which has two or more deflection axes, and controls deflection angles around deflection axes to deflect an optical path of an input light beam from any one of a plurality of input ports, and outputs the input light beam to any one of a plurality of output ports. The controlling apparatus comprises an optical detecting means for detecting an output optical level from the output port in order to control the output optical level of the spatial optical switch at a high resolution, and a controlling means for controlling the output optical level detected by the optical detecting means to a desired output optical level by controlling a deflection angle around one deflection axis of the deflection means, then controlling a deflection angle about another deflection axis of the deflecting means.
    Type: Application
    Filed: July 19, 2004
    Publication date: September 29, 2005
    Applicant: Fujitsu Limited
    Inventors: Yoshio Sakai, Kazuyuki Mori
  • Publication number: 20050128830
    Abstract: A semiconductor memory device enabling efficient repair of defects by using limited redundant memory while suppressing a drop of access speed accompanied with the repair of defects of the memory, wherein a first memory array is divided into a plurality of memory regions for each 16 word lines and wherein defective memory addresses in regions are stored in a second memory array. When a memory address for accessing the first memory array is input, the defective memory address of the memory region including the memory to be accessed is read out from the second memory array. In this way, the addresses of defective memory in 16 word lines worth of a memory region are stored in the second memory array 2, therefore addresses of a wider range of defective memory can be stored. For this reason, it becomes possible to repair defects occurring at random efficiently.
    Type: Application
    Filed: December 1, 2004
    Publication date: June 16, 2005
    Applicant: Sony Corporation
    Inventors: Toshiyuki Nishihara, Yoshio Sakai
  • Patent number: 6878586
    Abstract: A semiconductor memory device having STC cells wherein the major portions of active regions consisting of channel-forming portions are inclined at an angle of 45 degrees with respect to word lines and bit lines that meet at right angles with each other, thereby enabling the storage capacity portions to be arranged very densely and a sufficiently large capacity to be maintained with very small cell areas. Since the storage capacity portions are formed even on the bit lines, the bit lines are shielded, so that the capacity decreases between the bit lines and, hence, the memory array noise decreases. It is also possible to design the charge storage capacity portion so that a part of thereof has a form of a wall substantially vertical to the substrate in order to increase the capacity.
    Type: Grant
    Filed: June 11, 2003
    Date of Patent: April 12, 2005
    Assignee: Renesas Technology Corp.
    Inventors: Shinichiro Kimura, Naotaka Hashimoto, Yoshio Sakai, Tokuo Kure, Yoshifumi Kawamoto, Toru Kaga, Eiji Takeda
  • Publication number: 20050035569
    Abstract: A vehicle body is provided with a rear wheel at a rear portion, and a front wheel coupled to a handle post. A swing-enabling shaft is rotatably provided on the upper portion of the handle post. A handlebars unit is attached to the swing-enabling shaft such that it can swing forward and backward relative to the vehicle body. When the handlebars unit is swung, a driving mechanism is driven. The driving mechanism rotates the front wheel such that the vehicle body advances, regardless of whether the handlebars unit is swung forward or backward.
    Type: Application
    Filed: September 15, 2004
    Publication date: February 17, 2005
    Applicant: France Bed Co., Ltd.
    Inventors: Shigeru Ikeda, Shoji Ohshita, Yoshio Sakai
  • Publication number: 20040266096
    Abstract: A ferroelectric capacitor is provided in which the surface area of a ferroelectric thin film is expanded to increase the amount of polarization.
    Type: Application
    Filed: April 29, 2004
    Publication date: December 30, 2004
    Inventors: Chiharu Isobe, Yoshio Sakai
  • Publication number: 20040082877
    Abstract: Bioelectric impedances are measured by use of a plurality of electrodes which are brought into contact with body parts of a living body, muscle volumes and maximum voluntary contractions in body parts such as both hands and feet of the subject are calculated from the measured bioelectric impedances, a mechanomyogram when several degrees of loads are imposed on a muscle is also measured, the mechanomyogram data is frequency analyzed so as to determine average frequency and amplitude data, the amounts of actions (frequency of emission) of muscle fibers are calculated from inflection points thereof, and the type of the muscle (muscle fibers) and muscle fatigue of the subject are determined, so as to easily measure a maximum voluntary contraction which has heretofore been difficult to measure and make evaluations associated with muscles more accurately.
    Type: Application
    Filed: October 15, 2003
    Publication date: April 29, 2004
    Applicant: TANITA CORPORATION
    Inventors: Takahito Kouou, Yoshio Sakai