Patents by Inventor Shigeyuki Sudo

Shigeyuki Sudo 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).

  • Patent number: 8477722
    Abstract: There is disclosed a handoff control method for registering a CDMA mobile station in such a way that battery power wastage is prevented if successive attempts to register the station fail. If it is judged that registration fails (step S106), idle handoff is inhibited (step S107). The mobile station shifts to a registration-waiting sleep mode (step S108 and state ST10) in which the sending and receiving operation of the mobile station is paused for a given time. When a sleep timer that is set in the step S108 times out, registration is resumed under certain conditions. On resumption, a new pilot signal is acquired.
    Type: Grant
    Filed: September 25, 2009
    Date of Patent: July 2, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Shigeyuki Sudo, Yukinori Asada, Yoshinori Chida, Fumiharu Nakahara
  • Patent number: 8130816
    Abstract: A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: March 6, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
  • Patent number: 7953406
    Abstract: An access point diagnosis unit 201 controls a radio access terminal portion 213 included in the access point 100, to execute a test of connection with the access point 100. A switch within the access point selectively connects the radio access terminal portion 213, with any of an antenna and radio reception parts of the own access point 100. In accordance with a failing part, the failure information which contains the failing part and/or a failure content is transmitted from the radio access terminal portion 213 to the radio access terminal 108 (1) along a first path tracing the radio reception part connected by the switch, etc. of the access point 100, or (2) along a second path tracing the antenna connected by the switch and the other access point 101.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: May 31, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Takashi Itamiya, Tatsuo Horikoshi, Kuniaki Akatsuka, Taketoshi Arakawa, Shigeyuki Sudo
  • Patent number: 7865195
    Abstract: Location positioning setting information is read from a setting storage section when the user depressed a power key. The location positioning setting information comprises setting information, such as the maximum duration time of the location positioning operation and the operation timing when a power-off event has been generated. A control section turns off the power of a display section, a speaker, a microphone, etc., excluding a communication function for transmitting location positioning and positioning results. In this state, a location positioning section acquires the positional information of the mobile communication terminal. Then, a wireless communication section transmits the location positioning information of the positioned mobile communication terminal to a predetermined monitoring server which manages the positional information of the mobile communication terminal.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: January 4, 2011
    Assignee: Casio Hitachi Mobile Communications Co., Ltd.
    Inventors: Masaru Uemura, Takashi Iida, Shinji Ueno, Hidenori Sakaniwa, Shigeyuki Sudo, Norikazau Takahashi, Yoshiaki Umehara
  • Publication number: 20100014484
    Abstract: There is disclosed a handoff control method for registering a CDMA mobile station in such a way that battery power wastage is prevented if successive attempts to register the station fail. If it is judged that registration fails (step S106), idle handoff is inhibited (step S107). The mobile station shifts to a registration-waiting sleep mode (step S108 and state ST10) in which the sending and receiving operation of the mobile station is paused for a given time. When a sleep timer that is set in the step S108 times out, registration is resumed under certain conditions. On resumption, a new pilot signal is acquired.
    Type: Application
    Filed: September 25, 2009
    Publication date: January 21, 2010
    Applicant: HITACHI, LTD.
    Inventors: Shigeyuki Sudo, Yukinori Asada, Yoshinori Chida, Fumiharu Nakahara
  • Patent number: 7606198
    Abstract: There is disclosed a handoff control method for registering a CDMA mobile station in such a way that the waste of battery power is prevented if successive attempts to register the station fail. If it is judged that registration fails (step S106), idle handoff is inhibited (step S107). The mobile station shifts to a registration-waiting sleep mode (step S108 and state ST10) in which the sending and receiving operation of the mobile station is paused for a given time. When a sleep timer that is set in the step S108 times out, registration is resumed under certain conditions. On resumption, a new pilot signal is acquired.
    Type: Grant
    Filed: December 21, 2005
    Date of Patent: October 20, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Shigeyuki Sudo, Yukinori Asada, Yoshinori Chida, Fumiharu Nakahara
  • Publication number: 20090074035
    Abstract: A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.
    Type: Application
    Filed: November 21, 2008
    Publication date: March 19, 2009
    Inventors: Shigeyuki SUDO, Osamu Hasegawa, Toshiya Eguchi
  • Patent number: 7471715
    Abstract: A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.
    Type: Grant
    Filed: October 12, 2007
    Date of Patent: December 30, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
  • Publication number: 20080317293
    Abstract: Provided is a finger vein authentication apparatus including a light source for emitting light toward a finger, an image sensor for taking an image of the transmitted light from the finger, a lens apparatus for imaging the transmitted light to the image sensor, and an image processor for processing the taken image. The lens apparatus includes a lens unit, and the image processor extracts a vein pattern of the finger upon correcting the strain of the taken image.
    Type: Application
    Filed: February 29, 2008
    Publication date: December 25, 2008
    Inventors: Soichi Sakurai, Hitoshi Takizawa, Naoto Miura, Harumi Kiyomizu, Hiroaki Ono, Shigeyuki Sudo, Shoichi Sato
  • Patent number: 7447256
    Abstract: A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces OV(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: November 4, 2008
    Assignee: Hitachi, Ltd
    Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
  • Patent number: 7400667
    Abstract: A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: July 15, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
  • Patent number: 7397777
    Abstract: There is disclosed a handoff control method for registering a CDMA mobile station in such a way that the waste of a power is prevented if successive attempts to register the station fail. If it is judged that registration fails (step S106), idle handoff is inhibited (step S107). The mobile station shifts to a registration-waiting sleep mode (step S108 and state ST10) in which the sending and receiving operation of the mobile station is paused for a given time. When a sleep timer that is set in the step S108 times out, registration is resumed under certain conditions. On resumption, a new pilot signal is acquired.
    Type: Grant
    Filed: November 1, 2000
    Date of Patent: July 8, 2008
    Assignee: Hitachi, Ltd.
    Inventors: Shigeyuki Sudo, Yukinori Asada, Yoshinori Chida, Fumiharu Nakahara
  • Publication number: 20080049815
    Abstract: A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.
    Type: Application
    Filed: October 12, 2007
    Publication date: February 28, 2008
    Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
  • Publication number: 20080008274
    Abstract: A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.
    Type: Application
    Filed: September 18, 2007
    Publication date: January 10, 2008
    Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
  • Publication number: 20070242632
    Abstract: A receiver for the CDMA system which reduces power consumption during a suspension period of intermittent receiving operation by monitoring a suspension period by a low-power timer so that a VC-TCXO, reference signal group generation and receiving units are turned off and a modem unit is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer is started to count a time period and part of a received signal is stored. A PN code phase of stored data is calculated during the time period to obtain an indication value for phase deviation. State vectors for short and long codes and a further reception time are calculated based on the indication value. When the high-accuracy timer counts the time period and produces 0V(d), demodulation operation by a rake demodulation, demultiplexing, and descrambler units is started and is continued during the reception time.
    Type: Application
    Filed: June 12, 2007
    Publication date: October 18, 2007
    Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
  • Patent number: 7269203
    Abstract: A receiver for the CDMA system, in order to reduce a power consumption during a suspension period of intermittent receiving operation, monitors a suspension period t1 by means of a low-power timer 51 so that a VC-TCXO 1, a reference signal group generation unit 2 and a receiving unit 3 are turned off and a modem unit 4 is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer 44 is supplied with a start (d) to require counting of time t3 and a part of a received signal is stored. A PN code phase of stored data is calculated in a PN code phase calculator 46 during a period t3 to obtain an indication value i for a phase deviation. State vectors for short code and long code and further a reception time t4 are calculated on the basis of the indication value i to be set.
    Type: Grant
    Filed: February 10, 2005
    Date of Patent: September 11, 2007
    Assignee: Hitachi, Ltd.
    Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
  • Publication number: 20070183379
    Abstract: An access point diagnosis unit 201 controls a radio access terminal portion 213 included in the access point 100, to execute a test of connection with the access point 100. A switch within the access point selectively connects the radio access terminal portion 213, with any of an antenna and radio reception parts of the own access point 100. In accordance with a failing part, the failure information which contains the failing part and/or a failure content is transmitted from the radio access terminal portion 213 to the radio access terminal 108 (1) along a first path tracing the radio reception part connected by the switch, etc. of the access point 100, or (2) along a second path tracing the antenna connected by the switch and the other access point 101.
    Type: Application
    Filed: October 2, 2006
    Publication date: August 9, 2007
    Inventors: Takashi Itamiya, Tatsuo Horikoshi, Kuniaki Akatsuka, Taketoshi Arakawa, Shigeyuki Sudo
  • Publication number: 20060205445
    Abstract: Location positioning setting information is read from a setting storage section when the user depressed a power key. The location positioning setting information comprises setting information, such as the maximum duration time of the location positioning operation and the operation timing when a power-off event has been generated. A control section turns off the power of a display section, a speaker, a microphone, etc., excluding a communication function for transmitting location positioning and positioning results. In this state, a location positioning section acquires the positional information of the mobile communication terminal. Then, a wireless communication section transmits the location positioning information of the positioned mobile communication terminal to a predetermined monitoring server which manages the positional information of the mobile communication terminal.
    Type: Application
    Filed: February 22, 2006
    Publication date: September 14, 2006
    Applicant: Casio Hitachi Mobile Communications Co., Ltd.
    Inventors: Hidenori Sakaniwa, Shigeyuki Sudo, Norikazu Takahashi, Yoshiaki Umehara, Masaru Uemura, Takashi Iida, Shinji Ueno
  • Publication number: 20060114859
    Abstract: There is disclosed a handoff control method for registering a CDMA mobile station in such a way that battery power wastage is prevented if successive attempts to register the station fail. If it is judged that registration fails (step S106), idle handoff is inhibited (step S107). The mobile station shifts to a registration-waiting sleep mode (step S108 and state ST10) in which the sending and receiving operation of the mobile station is paused for a given time. When a sleep timer that is set in the step S108 times out, registration is resumed under certain conditions. On resumption, a new pilot signal is acquired.
    Type: Application
    Filed: December 21, 2005
    Publication date: June 1, 2006
    Inventors: Shigeyuki Sudo, Yukinori Asada, Yoshinori Chida, Fumiharu Nakahara
  • Patent number: 7035309
    Abstract: A receiver for the CDMA system, in order to reduce a power consumption during a suspension period of intermittent receiving operation, monitors a suspension period t1 by means of a low-power timer 51 so that a VC-TCXO 1, a reference signal group generation unit 2 and a receiving unit 3 are turned off and a modem unit 4 is set to a sleep state. Upon resumption of receiving operation, a high-accuracy timer 44 is supplied with a start (d) to require counting of time t3 and a part of a received signal is stored. A PN code phase of stored data is calculated in a PN code phase calculator 46 during a period t3 to obtain an indication value i for a phase deviation. State vectors for short code and long code and further a reception time t4 are calculated on the basis of the indication value i to be set.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: April 25, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi