Patents by Inventor Shigeto Umeyama
Shigeto Umeyama 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: 11650794Abstract: An electronic control apparatus includes a first arithmetic processor and a second arithmetic processor that is communicably connected to the first arithmetic processor. The second arithmetic processor includes a controller configured to (i) shift to a rewriting wait state after outputting a request signal that requests a program rewriting to the first arithmetic processor, and (ii) release the rewriting wait state and shift to a program rewriting process after a predetermined wait time that allows the first arithmetic processor to shift to the program rewriting process elapses after outputting the request signal.Type: GrantFiled: March 4, 2021Date of Patent: May 16, 2023Assignee: DENSO TEN LimitedInventors: Dongliang Fan, Hironori Yohata, Shigeto Umeyama
-
Patent number: 11537717Abstract: An authentication unit of an information processing apparatus authenticates an update control device that controls update of a control program by using a random number generated by a random number generation unit. In the random number generation unit, a first extraction unit extracts a bit value from a count value of a first clock signal, a calculation unit performs logical operation on the bit value extracted by the first extraction unit and a target bit value at a bit position included in an entropy as an update position that is designated, a replacement unit replaces the bit value at the update position with a result of the logical operation a position designation unit designates a new update position after the bit value is replaced, and an output unit generates the random number from the entropy.Type: GrantFiled: March 10, 2020Date of Patent: December 27, 2022Assignee: DENSO TEN LimitedInventors: Hironori Yohata, Shigeto Umeyama, Naoto Mori
-
Publication number: 20210294574Abstract: An electronic control apparatus includes a first arithmetic processor and a second arithmetic processor that is communicably connected to the first arithmetic processor. The second arithmetic processor includes a controller configured to (i) shift to a rewriting wait state after outputting a request signal that requests a program rewriting to the first arithmetic processor, and (ii) release the rewriting wait state and shift to a program rewriting process after a predetermined wait time that allows the first arithmetic processor to shift to the program rewriting process elapses after outputting the request signal.Type: ApplicationFiled: March 4, 2021Publication date: September 23, 2021Applicant: DENSO TEN LimitedInventors: Dongliang FAN, Hironori YOHATA, Shigeto UMEYAMA
-
Publication number: 20210034749Abstract: An authentication unit of an information processing apparatus authenticates an update control device that controls update of a control program by using a random number generated by a random number generation unit. In the random number generation unit, a first extraction unit extracts a bit value from a count value of a first clock signal, a calculation unit performs logical operation on the bit value extracted by the first extraction unit and a target bit value at a bit position included in an entropy as an update position that is designated, a replacement unit replaces the bit value at the update position with a result of the logical operation a position designation unit designates a new update position after the bit value is replaced, and an output unit generates the random number from the entropy.Type: ApplicationFiled: March 10, 2020Publication date: February 4, 2021Applicant: DENSO TEN LimitedInventors: Hironori YOHATA, Shigeto UMEYAMA, Naoto MORI
-
Patent number: 10656115Abstract: A controller of an air-fuel-ratio sensor according to an embodiment includes a current supplying unit, a sweep processing unit, and an abnormality detecting unit. The current supplying unit supplies a current to the pump cell through a first terminal connected with the pump cell so as to control the pump cell. The sweep processing unit executes a sweeping process in which a predetermined voltage or a predetermined current is applied to the detection cell through a second terminal connected with the detection cell so as to change a voltage and a current of the detection cell. The abnormality detecting unit detects a short-circuited state between the first terminal and the second terminal on the basis of a fluctuation in a voltage or a current, generated by the sweeping process, of the first terminal.Type: GrantFiled: June 8, 2017Date of Patent: May 19, 2020Assignees: FUJITSU TEN LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masatoshi Watanabe, Shigeto Umeyama, Satoshi Noguchi, Motoki Komiya, Keisuke Kido, Hiroto Miura
-
Patent number: 10591884Abstract: A controller according to an embodiment includes a main processing unit and a monitoring unit. The main processing unit executes a control program. The monitoring unit monitors the main processing unit by a first monitoring method for transmitting, to the main processing unit, a transmission content corresponding to a question and for evaluating an answer to the question from the main processing unit. The main processing unit causes, when receiving an updating request of the control program, the monitoring unit to perform switching from the first monitoring method into a second monitoring method for monitoring a watchdog signal of the main processing unit.Type: GrantFiled: December 11, 2017Date of Patent: March 17, 2020Assignee: DENSO TEN LIMITEDInventors: Naoto Mori, Shigeto Umeyama
-
Patent number: 10316780Abstract: A controller of an air-fuel-ratio sensor includes a control unit, a voltage-abnormality detecting unit, and a short-circuit-abnormality detecting unit. The control unit controls a current and a voltage of a gas sensor element through a plurality of terminals connected with the gas sensor element. The voltage-abnormality detecting unit changes, when at least one of voltages of the plurality of terminals is out of a predetermined range, a voltage level of an output voltage. The short-circuit-abnormality detecting unit causes, when the voltage level of the output voltage changes from a first voltage into a second voltage, a control unit to perform for a predetermined time a protective operation that suppresses currents from the control unit to the plurality of terminals, and detects, when the voltage level of the output voltage is the second voltage after the protective operation is released, a short-circuit abnormality.Type: GrantFiled: June 29, 2017Date of Patent: June 11, 2019Assignees: FUJITSU TEN LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masatoshi Watanabe, Shigeto Umeyama, Motoki Komiya, Keisuke Kido, Chiharu Morisaki, Hiroto Miura
-
Publication number: 20190163380Abstract: There is provided a rewriting checking device. An acquiring unit is configured to acquire a code stored in at least one area of areas immediately before and immediately after a rewrite target area in which rewrite data for rewriting data has been written, from a storage device having a plurality of areas, each of which has data including a specific first code and a specific end code. A checking unit is configured to check whether the code of the at least one area acquired by the acquiring unit is the same as the specific code of the at least one area of the areas immediately before and immediately after one area of the plurality of areas in which the rewrite data is required to be written.Type: ApplicationFiled: September 14, 2018Publication date: May 30, 2019Applicant: DENSO TEN LimitedInventors: Yumi SHIMIZU, Hironori YOHATA, Naoto MORI, Shigeto UMEYAMA, Hiroyuki MURAKAMI
-
Patent number: 10296322Abstract: A controller according to an embodiment includes a main processing unit and a storage. The main processing unit shifts, when receiving an updating request of a control program during executing this control program, to program shifting through a restart in a state where a device power source is held. The program shifting starts an updating program for updating the control program instead of the control program. The storage is configured to be able to hold information while the device power source is held. The main processing unit causes the storage to store, before the restart, update requesting information indicating that the updating request is received, causes the storage to store a history of the restart, and performs a start determination on the updating program on the basis of the update requesting information and the history that are referred after the restart.Type: GrantFiled: October 24, 2017Date of Patent: May 21, 2019Assignee: FUJITSU TEN LIMITEDInventors: Naoto Mori, Shigeto Umeyama
-
Publication number: 20180231948Abstract: A controller according to an embodiment includes a main processing unit and a monitoring unit. The main processing unit executes a control program. The monitoring unit monitors the main processing unit by a first monitoring method for transmitting, to the main processing unit, a transmission content corresponding to a question and for evaluating an answer to the question from the main processing unit. The main processing unit causes, when receiving an updating request of the control program, the monitoring unit to perform switching from the first monitoring method into a second monitoring method for monitoring a watchdog signal of the main processing unit.Type: ApplicationFiled: December 11, 2017Publication date: August 16, 2018Applicant: DENSO TEN LimitedInventors: Naoto MORI, Shigeto UMEYAMA
-
Publication number: 20180232224Abstract: A controller according to an embodiment includes a main processing unit and a storage. The main processing unit shifts, when receiving an updating request of a control program during executing this control program, to program shifting through a restart in a state where a device power source is held. The program shifting starts an updating program for updating the control program instead of the control program. The storage is configured to be able to hold information while the device power source is held. The main processing unit causes the storage to store, before the restart, update requesting information indicating that the updating request is received, causes the storage to store a history of the restart, and performs a start determination on the updating program on the basis of the update requesting information and the history that are referred after the restart.Type: ApplicationFiled: October 24, 2017Publication date: August 16, 2018Applicant: FUJITSU TEN LIMITEDInventors: Naoto MORI, Shigeto UMEYAMA
-
Publication number: 20180023494Abstract: A controller of an air-fuel-ratio sensor includes a control unit, a voltage-abnormality detecting unit, and a short-circuit-abnormality detecting unit. The control unit controls a current and a voltage of a gas sensor element through a plurality of terminals connected with the gas sensor element. The voltage-abnormality detecting unit changes, when at least one of voltages of the plurality of terminals is out of a predetermined range, a voltage level of an output voltage. The short-circuit-abnormality detecting unit causes, when the voltage level of the output voltage changes from a first voltage into a second voltage, a control unit to perform for a predetermined time a protective operation that suppresses currents from the control unit to the plurality of terminals, and detects, when the voltage level of the output voltage is the second voltage after the protective operation is released, a short-circuit abnormality.Type: ApplicationFiled: June 29, 2017Publication date: January 25, 2018Applicants: FUJITSU TEN LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masatoshi WATANABE, Shigeto UMEYAMA, Motoki KOMIYA, Keisuke KIDO, Chiharu MORISAKI, Hiroto MIURA
-
Publication number: 20180024093Abstract: A controller of an air-fuel-ratio sensor according to an embodiment includes a current supplying unit, a sweep processing unit, and an abnormality detecting unit. The current supplying unit supplies a current to the pump cell through a first terminal connected with the pump cell so as to control the pump cell. The sweep processing unit executes a sweeping process in which a predetermined voltage or a predetermined current is applied to the detection cell through a second terminal connected with the detection cell so as to change a voltage and a current of the detection cell. The abnormality detecting unit detects a short-circuited state between the first terminal and the second terminal on the basis of a fluctuation in a voltage or a current, generated by the sweeping process, of the first terminal.Type: ApplicationFiled: June 8, 2017Publication date: January 25, 2018Applicants: FUJITSU TEN LIMITED, TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Masatoshi WATANABE, Shigeto UMEYAMA, Satoshi NOGUCHI, Motoki KOMIYA, Keisuke KIDO, Hiroto MIURA
-
Patent number: 9787315Abstract: A control device according to an embodiment includes a driving unit that supplies, to a control target, a current or a voltage on which an Alternating-Current (AC) component is superimposed, an Analog-to-Digital (AD) converter, and an AD conversion controller. The AD conversion controller causes, in an AC cycle of the AC component, the AD converter to execute a first AD conversion in synchronization with a starting timing of the AC cycle, and then to execute second and subsequent AD conversions at predetermined time intervals in response to a trigger by an internal timer of the AD converter.Type: GrantFiled: May 19, 2017Date of Patent: October 10, 2017Assignee: FUJITSU TEN LIMITEDInventors: Masatoshi Watanabe, Shigeto Umeyama, Masanori Akaza
-
Patent number: 8321084Abstract: Provided is a control device including: a storage portion for storing binary data transmitted from outside and received successively; and a control portion for carrying out processing including: production processing of producing a frame where of the stored binary data, pieces of data expressing events occurring in a predetermined period are placed into a group among which pieces of data expressing events each having a small degree of variation are arranged so as to be close to each other; difference computing processing of arranging the frames produced at intervals of the predetermined time in a predetermined order and of computing a difference between two adjacent frames; compression processing of compressing a result of the computation by a run length method; and recording processing of recording, to a recording portion, a first frame in the difference computing processing, a number of difference computations, and the compressed data.Type: GrantFiled: March 13, 2009Date of Patent: November 27, 2012Assignee: Fujitsu Ten LimitedInventors: Shinji Yamashita, Takehito Iwanaga, Shigeto Umeyama
-
Publication number: 20090240392Abstract: Provided is a control device including: a storage portion for storing binary data transmitted from outside and received successively; and a control portion for carrying out processing including: production processing of producing a frame where of the stored binary data, pieces of data expressing events occurring in a predetermined period are placed into a group among which pieces of data expressing events each having a small degree of variation are arranged so as to be close to each other; difference computing processing of arranging the frames produced at intervals of the predetermined time in a predetermined order and of computing a difference between two adjacent frames; compression processing of compressing a result of the computation by a run length method; and recording processing of recording, to a recording portion, a first frame in the difference computing processing, a number of difference computations, and the compressed data.Type: ApplicationFiled: March 13, 2009Publication date: September 24, 2009Applicant: FUJITSU TEN LIMITEDInventors: Shinji YAMASHITA, Takehito IWANAGA, Shigeto UMEYAMA