Nissan Motor Company Limited

Renault S.a.s.

Minoru Tomikashi

Tadashi Suzuki

Norimasa Kishi

Toru Futami

Daisuke Saitoh

Keiko Katsuragawa

Takeshi Ono

Yasuhiro Tanaka

Hidetoshi Kanegae

Eiji Tozuka

Akira Hino

Toru Takagi

Takashi Ueno

Atsushi Sakagami

Hitoshi Takeda

Toshimichi Urakawa

Takeshi Oono

Tooru Futami

An anomaly determination device and an anomaly determination method determine an anomaly of a device based on state data of the device, by using a first determination model configured to determine whether a predetermined anomaly has occurred in the device, and a second determination model configured to classify state of the device, and output the determined anomaly of the device as an unknown anomaly in a case where the anomaly of the device is not the predetermined anomaly.

Anomaly determination device and anomaly determination method

A malfunction determination method for a production machine including a motor as a driving source of a rotating mechanism acquires sensor data of a sensor for detecting a condition of the production machine, determines whether the production machine has an operation stop period during which the production machine has stopped its operation for a predetermined period of time or longer in accordance with an operation history of the production machine, sets a malfunction determination suspension period for suspending a malfunction determination of the production machine when determined to have the operation stop period, in accordance with a length of the operation stop period, and determines whether the production machine has a malfunction in a period other than the malfunction determination suspension period.

Malfunction determination method and malfunction determination device

A recognition dictionary system includes a variant term accumulation unit, a variant frequency analysis unit, and a recognition dictionary update unit. The variant term accumulation unit is configured to accumulate and store a first variant term that has a meaning equivalent to a base term stored in a recognition dictionary and has first character string information that is different from character string information of the base term. The variant frequency analysis unit is configured to analyze an occurrence frequency of the first variant term accumulated and stored in the variant term accumulation unit and to determine the first variant term as a principal variant term when the occurrence frequency is higher than a first prescribed value. The recognition dictionary update unit is configured to update the recognition dictionary to register the principal variant term in the recognition dictionary as being associated with the base term.

Recognition dictionary system and recognition dictionary system updating method

An apparatus and method for recognizing paraphrases of uttered phrases, such as place names. At least one keyword contained in a speech utterance is recognized. Then, the keyword(s) contained in the speech utterance are re-recognized using a phrase including the keyword(s). Based on both recognition results, it is determined whether a paraphrase could have been uttered. If a paraphrase could have been uttered, a phrase corresponding to the paraphrase is determined as a result of speech recognition of the speech utterance.

Speech recognition apparatus and method

At least one recognized keyword is presented to a user, and the keyword is corrected appropriately upon receipt of a correction for the presented result. A standby-word dictionary used for recognition of uttered speech is generated according to a result of the correction to recognize the uttered speech. Therefore, even if recognized keywords contain an error, the error can be corrected and uttered speech can be accurately recognized.

Speech recognition correction with standby-word dictionary

An apparatus for analyzing control data for finding a cause of a trouble produced in a device controlled with a plurality of controlled variables. The apparatus includes sensors sensitive to a condition of the device for producing signals indicative of parameters reflective of the sensed condition. The parameter indicative signals are fed to a control circuit which calculates a valve corresponding to a setting of each of the controlled variables from a desired relationship. The calculated values are stored in time sequence along with the corresponding values of the parameter indicative signals. The stored values are transferred from the first memory to a second memory upon occurrence of a command signal indicating a trouble produced in the device. The transfer values are analyzed to find a cause of the trouble.

Trouble checking apparatus

A trouble checking apparatus for use with an automotive vehicle having sensors sensitive to a condition of the automotive vehicle for producing sensor signals indicative of parameters reflective of the sensed condition. The apparatus includes a control circuit responsive to the sensor signals for calculating a value corresponding to a setting of each of a plurality of means for controlling the automotive vehicle. A self-checking unit is connected to the control circuit for checking the sensor signals applied to the control circuit to provide a self-checking code indicative of a cause of automotive vehicle trouble when at least one of the sensor signals has an abnormal value. An external trouble checking unit is connected through a detachable connector to the self-checking unit for utilizing the sensor signals fed to the control circuit and the self-checking code to find a cause of automotive vehicle trouble.

Automotive vehicle trouble checking apparatus

A network system having a single-wire common signal transmission line to which a plurality of data processing stations and a synchronous code signal generator are connected. Each station constituting the network system comprises: first means for repeatedly generating an address information bit signal based on a predetermined time series code for each predetermined synchronization timing, modulating each address information bit signal into a synchronous signal having predetermined pulsewidths which is dependent on a bit status of each address information bit signal and outputting the modulated synchronous signal to the common signal transmission line so as to be superposed on the serial bit data string, second means provided within each station for receiving the synchronous signal on the signal transmission line derived from the first means and extracting the bit status information of the predetermined time series code from the received synchronous signal on the basis of the pulsewidth of the received synchronous signal from the common signal transmission line, third means for determining bit combination pattern of a predetermined bit length inherent in the predetermined time series code from the predetermined time series code comprising each of the bit status information extracted by the second means, and fourth means for determining an operation mode of the station from the bit combination pattern determined by the third means.

Network system

A data transmitting/receiving network system connects a plurality of stations via a data transmission bus line in a time sharing mode. A specially encoded clocking signal cycles through a plurality of unique states and each station is allowed to transmit/receive in one of the unique cycles. Each station is equipped with serial-to-parallel reception and parallel-to-serial transmission so that a plurality of bits can be transmitted/received in each cycle. Parity error checking is performed on the transmitted/received bit parcels.

Data transmission/reception network system

A loop-type data transmission/reception network system has a plurality of data processing stations and a single data transmission/reception route which interconnects said stations in a loop for transmitting necessary data between the stations, each of the stations comprising: (a) means for detecting a break-down in the data transmission/reception route between the station itself and the preceding station; (b) means responsive to the detection of a break-down in the data transmission/reception route between the station itself and the preceding station by the detection means for transmitting break-down information to the subsequent station; and means for reversing the transmission direction in the data transmission reception route in accordance with the break-down information transmitted by the break-down information transmitting means.

Loop-type data transmission/reception network

A receiver is applied to optical communication using an optical pulse signal carrying data which is cyclically updated. The optical signal is converted to a corresponding electrical pulse signal. The data is extracted from the electrical signal. The extracted data from successive cycles are compared. In response to the result of comparison between the data, a determination is made as to the number of cycles in which the extracted data is at a given value. When the determined number of cycles reaches a variable preset number, a previously used data value is replaced by the given value. The amplitudes of the electrical signal pulses are compared with a reference level. The preset number is varied in accordance with the result of comparison between the pulse amplitudes and the reference level.

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Yokohama, Japan

Minoru Tomikashi