Patents by Inventor Kazuyoshi Serizawa

Kazuyoshi Serizawa 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: 20240416936
    Abstract: This electronic control device comprises a first priority information table which is provided for each of a plurality of area electronic devices and to which priorities of the area electronic devices from which information is to be acquired are set, and a control unit which refers to the first priority information table when the control unit has determined, from an outside situation of a vehicle, that a state of the vehicle is to change, determines the area electronic device the priority of which is to be changed according to the state of the vehicle to change, instructs the determined area electronic device to change the priority, and acquires, from the area electronic device to which the change in priority is instructed, information the priority of which has been changed so as to have a higher priority.
    Type: Application
    Filed: November 9, 2021
    Publication date: December 19, 2024
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Ryo TSUCHIYA, Takeshi SETA, Kazuyoshi SERIZAWA
  • Patent number: 12117943
    Abstract: An object of the present invention is to provide a technology that enables second control software to continue processing using a peripheral circuit even in a situation where an abnormality related to first control software occurs. An electronic control device includes a memory (3) that stores the first control software and the second control software, a CPU (1) that executes the first control software and the second control software, and a peripheral circuit (200) used by the first control software and the second control software. The memory further includes a first buffer (313a) and a second buffer (323a). The CPU interrupts at least one of the processing of storing first peripheral transmission information in the first buffer and the processing of transmitting the first peripheral transmission information to the peripheral in a specific situation in which the abnormality related to the first control software occurs.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: October 15, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Masashi Mizoguchi, Tomohito Ebina, Tasuku Ishigooka, Kazuyoshi Serizawa, Kenichi Osada
  • Publication number: 20240340358
    Abstract: A communication system and so forth that can improve the throughput are provided. The communication system includes a server 1A (first server), another server 1B (second server), and a client 2. The server 1B transmits server information (second server information) indicative of an address of the server 1B to the client 2 through a non-IP communication channel. The client 2 includes a service registry 114C (registry) into which the server information transmitted from the server 1B is stored. The client 2 acquires the server information from the service registry 114C and requests the server 1B corresponding to the address indicated by the server information for a service to be provided by the server 1B.
    Type: Application
    Filed: September 8, 2020
    Publication date: October 10, 2024
    Inventors: Ryo TSUCHIYA, Kazuyoshi SERIZAWA
  • Publication number: 20240330166
    Abstract: A vehicle control system includes: a computation unit that executes a computation of first control software when a vehicle is in a first state and that executes a computation of second control software when the vehicle is in a second state; a comparison reference data saving unit that saves input data input from a sensor to the first control software and to the second control software and that saves output data from the first control software and the second control software; and an evaluation unit that evaluates the performance of the second control software, based on a difference between pieces of output data read from the comparison reference data saving unit.
    Type: Application
    Filed: February 8, 2022
    Publication date: October 3, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Takeshi FUKUDA, Tasuku ISHIGOOKA, Masashi MIZOGUCHI, Takashi MURAKAMI, Kazuyoshi SERIZAWA, Tomohito EBINA
  • Patent number: 12103546
    Abstract: Provided is a vehicle control device capable of executing control processing by utilizing a power saving execution determination unit that determines a shift to or a release from a normal mode to a power saving mode on the basis of a preset power saving condition, and a power saving execution unit that executes power saving control of the CPU by determining a shift to the power saving mode and stops the power saving control of the CPU by determining a release of the power saving mode. Then, the power saving execution determination unit has a plurality of power saving conditions, determines to shift to the power saving mode in a case where all of the plurality of power saving conditions are satisfied, and determines to release the power saving mode in the case of being changed to a state in which some of the power saving conditions are not satisfied.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: October 1, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Tasuku Ishigooka, Nobuyasu Kanekawa, Tomohito Ebina, Kazuyoshi Serizawa, Tatsuya Horiguchi
  • Publication number: 20240241747
    Abstract: An electronic controller includes: a virtual machine that accesses a first virtual driver to execute a process; a hypervisor that calls a first real driver of a first peripheral, based on a peripheral access request received from the first virtual driver; an access recording unit that calls the first virtual driver to record a peripheral access request transmitted to the hypervisor; a state recording unit that calls the first real driver to record a state of a register of the first peripheral; and a monitoring unit that monitors an operation of the hypervisor. The monitoring unit determines an abnormality of the hypervisor, based on a record by the access recording unit and on a record by the state recording unit.
    Type: Application
    Filed: February 4, 2022
    Publication date: July 18, 2024
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Masashi MIZOGUCHI, Tomohito EBINA, Kazuyoshi SERIZAWA, Kenichi OSADA, Tasuku ISHIGOOKA, Takeshi FUKUDA
  • Publication number: 20240231905
    Abstract: In an electronic system, a plurality of task processing units that processes assigned tasks are connected via a network. Each of the plurality of task processing units includes a task activation unit that activates and executes the task, and third task processing in a third task processing unit uses at least a processing result of a first task in a first task processing unit or a processing result of a second task in a second task processing unit preceding the third task processing, and periodically executes a series of processing from the preceding first task processing or the second task processing to the third task processing at predetermined time intervals.
    Type: Application
    Filed: February 3, 2022
    Publication date: July 11, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Masashi MIZOGUCHI, Takashi MURAKAMI, Kazuyoshi SERIZAWA, Yukinori ASADA, Takeshi FUKUDA, Tomohito EBINA
  • Patent number: 12024183
    Abstract: Provided are a vehicle control device and a computer program capable of simplifying design of state transition. An intermediate layer constituting an ECU divides a state of a lower-layer state machine for each function of a vehicle system in association with the state of the lower-layer state machine, and outputs the state to an upper-layer state machine, a state transition table of the upper-layer state machine includes, as a condition of state transition of the upper-layer state machine, a current state of a lower-layer state machine or a state to transition, and the upper-layer state machine receives the state of the lower-layer state machine input from the intermediate layer, refers to the state transition table, and outputs a signal for controlling the vehicle system.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: July 2, 2024
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Ryo Tsuchiya, Kazuyoshi Serizawa, Tomohito Ebina
  • Publication number: 20240199073
    Abstract: An electronic control device that executes arithmetic processing for controlling an operation of a vehicle includes: a determination unit that is connected to one or a plurality of electronic devices that recognize an external environment on the basis of information of a sensor provided in the vehicle and determines an operation of the vehicle on the basis of external recognition information transmitted from the electronic devices; and a functional boundary change determination unit that determines changes in functions of the electronic control device and the electronic devices if it is determined that a processing load of the electronic control device is high.
    Type: Application
    Filed: February 4, 2022
    Publication date: June 20, 2024
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Hiroki MAEHAMA, Hiroaki ITO, Takeshi YAMADA, Koji MAEDA, Kazuyoshi SERIZAWA
  • Patent number: 11947486
    Abstract: The computing efficiency of an electronic computing device is improved. HPCs 20 to 23 include arithmetic processing units HA0 to HA3, respectively. Each of the arithmetic processing units HA0 to HA3 executes arithmetic processing in parallel. LPCs 30 to 33 includes management processing units LB0 to LB3, respectively. Each of the management processing units LB0 to LB3 manages execution of specific processing by an accelerator 6 when each of the arithmetic processing units HA0 to HA3 causes the accelerator 6 to execute the specific processing, and performs a series of commands for causing the accelerator 6 to execute the specific processing on a DMA controller 5 and the accelerator 6.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: April 2, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Tatsuya Horiguchi, Tasuku Ishigooka, Kazuyoshi Serizawa, Tsunamichi Tsukidate
  • Patent number: 11908199
    Abstract: Image data captured from a traveling vehicle is considered, and it is not possible to reduce the transmission band of the image data. It is assumed that a radar 4 mounted in a traveling vehicle 10 detects a certain distant three-dimensional object at a time T in a direction of a distance d1 [m] and an angle ?1. Since the vehicle 10 travels at a vehicle speed Y [km/h], it is predicted that a camera 3 is capable of capturing the distant three-dimensional object at a time (T+?T) and an angle ?1 or at a distance d2 [m]. Therefore, if a control unit 2 outputs a request to the camera 3 in advance, so as to cut out an image of the angle ?1 or the distance d2 [m] at the time (T+?T), when the time (T+?T) comes, the camera 3 transfers a whole image and a high-resolution image being a cutout image of only a partial image, to the control unit 2.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: February 20, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Tetsuya Yamada, Teppei Hirotsu, Tomohito Ebina, Kazuyoshi Serizawa, Shouji Muramatsu
  • Publication number: 20240020245
    Abstract: An object of the present invention is to provide a technology that enables second control software to continue processing using a peripheral circuit even in a situation where an abnormality related to first control software occurs. An electronic control device includes a memory (3) that stores the first control software and the second control software, a CPU (1) that executes the first control software and the second control software, and a peripheral circuit (200) used by the first control software and the second control software. The memory further includes a first buffer (313a) and a second buffer (323a). The CPU interrupts at least one of the processing of storing first peripheral transmission information in the first buffer and the processing of transmitting the first peripheral transmission information to the peripheral in a specific situation in which the abnormality related to the first control software occurs.
    Type: Application
    Filed: September 9, 2021
    Publication date: January 18, 2024
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Masashi MIZOGUCHI, Tomohito EBINA, Tasuku ISHIGOOKA, Kazuyoshi SERIZAWA, Kenichi OSADA
  • Publication number: 20230415677
    Abstract: Provided is a vehicle control device capable of improving safety and availability by determining, in response to a failure of a core, a core to which the software is to be moved, determining whether there is a contention in the timings of execution based on software operations after the software is moved to another core, and making an arbitration when there is a contention. The vehicle control device has a CPU 11 that executes a plurality of tasks in clock-synchronization, the vehicle control device including a failure detecting unit 121 that detects a failure of a core 10 on the CPU 11, and an execution timing arbitration unit 124 that allocates a task having been executed by a failed core 10 to a non-failed core 10.
    Type: Application
    Filed: August 31, 2021
    Publication date: December 28, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Tasuku ISHIGOOKA, Kazuyoshi SERIZAWA, Takashi MURAKAMI
  • Publication number: 20230339484
    Abstract: Provided is a vehicle control device capable of executing control processing by utilizing a power saving execution determination unit that determines a shift to or a release from a normal mode to a power saving mode on the basis of a preset power saving condition, and a power saving execution unit that executes power saving control of the CPU by determining a shift to the power saving mode and stops the power saving control of the CPU by determining a release of the power saving mode. Then, the power saving execution determination unit has a plurality of power saving conditions, determines to shift to the power saving mode in a case where all of the plurality of power saving conditions are satisfied, and determines to release the power saving mode in the case of being changed to a state in which some of the power saving conditions are not satisfied.
    Type: Application
    Filed: December 18, 2020
    Publication date: October 26, 2023
    Applicant: Hitachi Astemo, Ltd.
    Inventors: Tasuku ISHIGOOKA, Nobuyasu KANEKAWA, Tomohito EBINA, Kazuyoshi SERIZAWA, Tatsuya HORIGUCHI
  • Patent number: 11799598
    Abstract: There are provided a vehicle control device and a control method thereof capable of improving safety and reliability with a simple configuration. A vehicle control device 1 that controls a vehicle includes an execution management unit P3 that manages execution of predetermined processing, an execution state recording unit P5 that records a history of execution states of the predetermined processing, and a setting information management unit P4 that manages setting information related to the execution of the predetermined processing. The setting information includes a jitter tolerance which is a tolerance of a jitter. The execution management unit P3 adjusts an execution timing of processing to be adjusted, which is included in the predetermined processing and in which the jitter is generated, based on the jitter tolerance of the processing to be adjusted.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: October 24, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Tsunamichi Tsukidate, Tomohito Ebina, Kazuyoshi Serizawa, Kosei Goto
  • Publication number: 20230306796
    Abstract: The present invention addresses the problem of reducing the processor load of an integrated circuit that processes information aggregated in a zone architecture. A network engine (210) of this vehicle control device receives data containing a plurality of pairs of the information and a source address of the information according to a first communication protocol (Protocol A). The network engine (210) identifies a communication protocol (Protocol B, C) of a communication interface of a destination integrated circuit (SoC 220) corresponding to the source address of each item of the information. The network engine (210) sorts the information for each identified communication protocol, converts the sorted information into data of the identified communication protocol, and transmits each converted data item to the destination integrated circuit via the communication interface of the destination integrated circuit.
    Type: Application
    Filed: June 14, 2021
    Publication date: September 28, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Ryo TSUCHIYA, Kazuyoshi SERIZAWA, Koji MAEDA
  • Patent number: 11763035
    Abstract: A software management device capable of converting a term used in a model and an abstraction level thereof. The software management device includes an input unit that inputs a target model, a storage unit that hierarchically stores functions and/or names constituting the model, and an in-model name replacement unit that selects a corresponding function and/or name from the storage unit according to the input model input from the input unit, and replaces a function and/or a name in the input model with the selected function and/or name.
    Type: Grant
    Filed: October 16, 2019
    Date of Patent: September 19, 2023
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Hiroki Maehama, Fumio Narisawa, Satoshi Otsuka, Kazuyoshi Serizawa
  • Publication number: 20230222050
    Abstract: A vehicle control device includes a verification management unit that executes old control software unit 112 representing an old version of control software and new control software unit 113 representing a new version of control software in sequence or in parallel, and an output verification unit that when an output value from old control software unit 112 and an output value from new control software unit 113 do not match, outputs information indicating the output values' not matching.
    Type: Application
    Filed: June 10, 2021
    Publication date: July 13, 2023
    Applicant: HITACHI ASTEMO, LTD.
    Inventors: Tasuku ISHIGOOKA, Kazuyoshi SERIZAWA
  • Patent number: 11645124
    Abstract: To be capable of concurrent execution of a function group not in data conflict by a plurality of cores and to execute a function pair in data conflict in a temporal separation manner. A process barrier 20 includes N?1 checker functions 22 and one limiter function 23, where the number of cores capable of concurrently executing the functions is N (N is an integer equal to or greater than 2), the checker functions 22 determine whether the head entry of a lock-free function queue LFQ1 is either the checker function 22 or the limiter function 23, and repeats reading of the head entry of the lock-free function queue LFQ1 if either, and ends processing if neither, and the limiter function 23 is an empty function ending without performing any processing.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: May 9, 2023
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Masataka Nishi, Tomohito Ebina, Kazuyoshi Serizawa
  • Patent number: 11590907
    Abstract: An in-vehicle network system which is mounted on a vehicle includes an electronic control unit, a plurality of gateway devices, and a plurality of sensor devices that collects ambient information which is information around the vehicle. Each of the sensor devices communicates with the electronic control unit via at least one gateway device. The electronic control unit includes a mode management unit that determines one operation mode in a plurality of operation modes associated with the sensor device to be operated, and a sleep instruction control unit that specifies a gateway device which is the gateway device, in which the connected sensor device does not operate, and does not need to relay sensor information, based on the operation mode determined by the mode management unit, and transitions the gateway device having no need to relay the sensor information to a low power state in which a processing capacity is lowered.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: February 28, 2023
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Jun Sugawa, Kazuyoshi Serizawa, Shuhei Kaneko, Kenichi Osada