Denso Corporation

Nippondenso Co., Ltd.

Katsuhisa Tsuji

Tomohisa Kishigami

Katsuhiro Ina

Akira Uchida

Kazuhiro Higuchi

Hiroshi Yamakita

Yoshiki Tatsutomi

A storage circuit of a portable device stores setting data concerning a function installed on a used vehicle or an in-use vehicle. Stored setting data of the portable device is read when the user gets in an in-use vehicle after use of a used vehicle. Setting data stored in the storage section of the vehicle apparatus is also read. The two read setting data are compared. When a comparison result shows a difference, execution of a function is permitted based on setting data read from the storage circuit of the portable device. The user can be notified of a function not used by the user or a new function when execution of the functions is permitted.

Vehicle function execution system, vehicle apparatus, portable device, recording medium, and information center

A data receiving unit includes a data receiving circuit for receiving, through a transmission path, transmission data which has been encoded into a predetermined transmission code by using a predetermined transmission clock signal and includes a reference pulse having a pulse width corresponding to a period of the transmission clock signal, a clock for generating a received clock signal in synchronization with the transmission data, and a data decoding circuit for decoding the transmission data received by the data receiving circuit using the received clock signal generated by the clock, where the clock includes an oscillator generating at least a reference clock having a period which is shorter than that of the transmission clock signal, a counter circuit counting an interval between points of change of the transmission data received by the data receiving circuit according to the reference clock signal, a reference pulse detector circuit for detecting the reference pulse on the basis of a count value from the counter circuit, and a received clock signal generating circuit for generating a received clock signal in synchronization with the transmission data by frequency-dividing the reference clock signal on the basis of the count value when the counter circuit counts the pulse width of the reference pulse.

Data communication system having improved synchronization capability

To provide a multiplex communication system where nodes can reliably shift to a sleep state even though the system has a very simple structure and even if abnormal conditions occur in any node, multiple nodes communicate with each other through a communication network, and when the individual nodes are in a state of being unable to shift to a sleep state, they set a sleep disable bit in signals to be transmitted and transmit them. When they become able to shift to the sleep state, the individual nodes confirm that they have not yet received an active sleep disable bit sent from other nodes continuously over a predetermined period of time or more. Thereafter, each individual node proceeds to the sleep state. According to the system, the individual nodes can proceed to the sleep state by simply determining non-transmission of the sleep disable bit from other nodes even in the presence of nodes deactivated due to failures.

Multiplex distributed communication system having high sleep mode

Temperature dependent control module cluster unit for motor vehicle

Growing community of inventors

Hoi-gun, Japan

Katsuhisa Tsuji