Fujitsu Ten Limited

Denso Ten Limited

Toyota Jidosha Kabushiki Kaisha

Shigeto Umeyama

Masatoshi Watanabe

Naoto Mori

Motoki Komiya

Keisuke Kido

Hiroto Miura

Hironori Yohata

Shinji Yamashita

Takehito Iwanaga

Masanori Akaza

Satoshi Noguchi

Chiharu Morisaki

Dongliang Fan

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.

Electronic control apparatus

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.

Information processing apparatus

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.

Controller and abnormality detecting method of air-fuel-ratio sensor

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.

Controller and control program updating method

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.

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.

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.

Control device and analog-to-digital conversion controlling method

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.

Growing community of inventors

Kobe, Japan

Shigeto Umeyama