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).
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Patent number: 8477722Abstract: 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: GrantFiled: September 25, 2009Date of Patent: July 2, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Shigeyuki Sudo, Yukinori Asada, Yoshinori Chida, Fumiharu Nakahara
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Patent number: 8130816Abstract: 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: GrantFiled: November 21, 2008Date of Patent: March 6, 2012Assignee: Samsung Electronics Co., Ltd.Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
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Patent number: 7953406Abstract: 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: GrantFiled: October 2, 2006Date of Patent: May 31, 2011Assignee: Hitachi, Ltd.Inventors: Takashi Itamiya, Tatsuo Horikoshi, Kuniaki Akatsuka, Taketoshi Arakawa, Shigeyuki Sudo
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Patent number: 7865195Abstract: 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: GrantFiled: February 22, 2006Date of Patent: January 4, 2011Assignee: Casio Hitachi Mobile Communications Co., Ltd.Inventors: Masaru Uemura, Takashi Iida, Shinji Ueno, Hidenori Sakaniwa, Shigeyuki Sudo, Norikazau Takahashi, Yoshiaki Umehara
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Publication number: 20100014484Abstract: 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: ApplicationFiled: September 25, 2009Publication date: January 21, 2010Applicant: HITACHI, LTD.Inventors: Shigeyuki Sudo, Yukinori Asada, Yoshinori Chida, Fumiharu Nakahara
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Patent number: 7606198Abstract: 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: GrantFiled: December 21, 2005Date of Patent: October 20, 2009Assignee: Hitachi, Ltd.Inventors: Shigeyuki Sudo, Yukinori Asada, Yoshinori Chida, Fumiharu Nakahara
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Publication number: 20090074035Abstract: 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: ApplicationFiled: November 21, 2008Publication date: March 19, 2009Inventors: Shigeyuki SUDO, Osamu Hasegawa, Toshiya Eguchi
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Patent number: 7471715Abstract: 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: GrantFiled: October 12, 2007Date of Patent: December 30, 2008Assignee: Hitachi, Ltd.Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
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Publication number: 20080317293Abstract: 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: ApplicationFiled: February 29, 2008Publication date: December 25, 2008Inventors: Soichi Sakurai, Hitoshi Takizawa, Naoto Miura, Harumi Kiyomizu, Hiroaki Ono, Shigeyuki Sudo, Shoichi Sato
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Patent number: 7447256Abstract: 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: GrantFiled: September 18, 2007Date of Patent: November 4, 2008Assignee: Hitachi, LtdInventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
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Patent number: 7400667Abstract: 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: GrantFiled: June 12, 2007Date of Patent: July 15, 2008Assignee: Hitachi, Ltd.Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
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Patent number: 7397777Abstract: 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: GrantFiled: November 1, 2000Date of Patent: July 8, 2008Assignee: Hitachi, Ltd.Inventors: Shigeyuki Sudo, Yukinori Asada, Yoshinori Chida, Fumiharu Nakahara
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Publication number: 20080049815Abstract: 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: ApplicationFiled: October 12, 2007Publication date: February 28, 2008Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
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Publication number: 20080008274Abstract: 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: ApplicationFiled: September 18, 2007Publication date: January 10, 2008Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
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Publication number: 20070242632Abstract: 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: ApplicationFiled: June 12, 2007Publication date: October 18, 2007Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
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Patent number: 7269203Abstract: 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: GrantFiled: February 10, 2005Date of Patent: September 11, 2007Assignee: Hitachi, Ltd.Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi
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Publication number: 20070183379Abstract: 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: ApplicationFiled: October 2, 2006Publication date: August 9, 2007Inventors: Takashi Itamiya, Tatsuo Horikoshi, Kuniaki Akatsuka, Taketoshi Arakawa, Shigeyuki Sudo
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Publication number: 20060205445Abstract: 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: ApplicationFiled: February 22, 2006Publication date: September 14, 2006Applicant: Casio Hitachi Mobile Communications Co., Ltd.Inventors: Hidenori Sakaniwa, Shigeyuki Sudo, Norikazu Takahashi, Yoshiaki Umehara, Masaru Uemura, Takashi Iida, Shinji Ueno
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Publication number: 20060114859Abstract: 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: ApplicationFiled: December 21, 2005Publication date: June 1, 2006Inventors: Shigeyuki Sudo, Yukinori Asada, Yoshinori Chida, Fumiharu Nakahara
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Patent number: 7035309Abstract: 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: GrantFiled: December 27, 2001Date of Patent: April 25, 2006Assignee: Hitachi, Ltd.Inventors: Shigeyuki Sudo, Osamu Hasegawa, Toshiya Eguchi