Abstract: The method of the present invention is an update method of a software which is stored in a rewritable non-volatile memory of a communication terminal and is directly executed. The method comprises: an update file transfer step in which an update software is transferred to the communication terminal from a software management server for managing the update software which is to be stored in the rewritable non-volatile memory as an update file, and the update file is stored in a rewritable volatile memory of the communication terminal; and an update software rewriting step in which the software, which is stored in the rewritable non-volatile memory and is directly executed, is rewritten with the update software stored in the rewritable volatile memory as the update file after the update file transfer step.

Abstract: A transmitter cell phone 10 is provided with a controller 11 for fulfilling functions of a data encryptor, a first key encryptor, and an encryption file generator. The data encryptor encrypts data, using a first encryption key. The first key encryptor encrypts the first encryption key, using a second encryption key. The encryption file generator generates an encryption file of the data from the data encrypted by the data encryptor, the first encryption key encrypted by the first key encryptor, and user-specific information permitting identification of a user of the mobile communication terminal.

Abstract: In an engine having a premixed combustion mode, an EGR flow rate estimating precision is deteriorated at a transient time, and a torque fluctuation and an exhaust gas deterioration are caused. In an engine control apparatus having a premixed combustion mode and a diffusion combustion mode, a sensor detecting an EGR flow rate is arranged in an EGR flow path of the engine, and a cylinder state of the engine is estimated by using an output value of the sensor detecting the EGR flow rate at a time when the engine is in the premixed combustion mode. Since it is possible to accurately detect the EGR flow rate at the transient time and feed back the EGR flow rate at a high response, it is possible to prevent a torque fluctuation and an exhaust gas deterioration.

Abstract: A searching order control portion has a searching order table for a memory pool having sub-memory pools. The searching order table has entries in which request memory area size ranges and corresponding searching orders are entered. The searching order control portion finds the sub-memory pool that should be searched for an assignable memory area by the use of the searching order table in response to a request of a getting request receiving portion. The searching order control portion notifies a sub-memory pool ID of the found sub-memory pool to the getting request receiving portion. The getting request receiving portion makes a getting portion try getting a memory area with request memory area size from the sub-memory pool of the sub-memory pool ID. The getting request receiving portion repeats the above-mentioned operation until the getting portion gets the memory area or the searching order control portion notifies the end of search.

Abstract: In an engine having a premixed combustion mode, an EGR flow rate estimating precision is deteriorated at a transient time, and a torque fluctuation and an exhaust gas deterioration are caused. In an engine control apparatus having a premixed combustion mode and a diffusion combustion mode, a sensor detecting an EGR flow rate is arranged in an EGR flow path of the engine, and a cylinder state of the engine is estimated by using an output value of the sensor detecting the EGR flow rate at a time when the engine is in the premixed combustion mode. Since it is possible to accurately detect the EGR flow rate at the transient time and feed back the EGR flow rate at a high response, it is possible to prevent a torque fluctuation and an exhaust gas deterioration.

Abstract: An information communication system 1 according to the present invention is comprised of a cellular phone 10 having a data storage 11, a data list transmitter 13, and a data transmitter 16; and a cellular phone 20 having a check list DB 21 and a data receiver 26. The cellular phone 10 makes the data list transmitter 13 transmit a data list of content data stored in the data storage 11, to the cellular phone 20. The cellular phone 20 collates the data list with a check list stored in the check list DB 21 to generate a request list, and transmits the request list to the cellular phone 10. The cellular phone 10 extracts the content data recorded in the received request list from the data storage 11 and transmits the content data to the cellular phone 20. The cellular phone 20 receives the content data through the data receiver 26.

Abstract: The method of the present invention is an update method of a software which is stored in a rewritable non-volatile memory of a communication terminal and is directly executed. The method comprises: an update file transfer step in which an update software is transferred to the communication terminal from a software management server for managing the update software which is to be stored in the rewritable non-volatile memory as an update file, and the update file is stored in a rewritable volatile memory of the communication terminal; and an update software rewriting step in which the software, which is stored in the rewritable non-volatile memory and is directly executed, is rewritten with the update software stored in the rewritable volatile memory as the update file after the update file transfer step.

Abstract: A transmitter cell phone 10 is provided with a controller 11 for fulfilling functions of a data encryptor, a first key encryptor, and an encryption file generator. The data encryptor encrypts data, using a first encryption key. The first key encryptor encrypts the first encryption key, using a second encryption key. The encryption file generator generates an encryption file of the data from the data encrypted by the data encryptor, the first encryption key encrypted by the first key encryptor, and user-specific information permitting identification of a user of the mobile communication terminal.

Abstract: A searching order control portion has a searching order table for a memory pool having sub-memory pools. The searching order table has entries in which request memory area size ranges and corresponding searching orders are entered. The searching order control portion finds the sub-memory pool that should be searched for an assignable memory area by the use of the searching order table in response to a request of a getting request receiving portion. The searching order control portion notifies a sub-memory pool ID of the found sub-memory pool to the getting request receiving portion. The getting request receiving portion makes a getting portion try getting a memory area with request memory area size from the sub-memory pool of the sub-memory pool ID. The getting request receiving portion repeats the above-mentioned operation until the getting portion gets the memory area or the searching order control portion notifies the end of search.

Abstract: An information communication system 1 according to the present invention is comprised of a cellular phone 10 having a data storage 11, a data list transmitter 13, and a data transmitter 16; and a cellular phone 20 having a check list DB 21 and a data receiver 26. The cellular phone 10 makes the data list transmitter 13 transmit a data list of content data stored in the data storage 11, to the cellular phone 20. The cellular phone 20 collates the data list with a check list stored in the check list DB 21 to generate a request list, and transmits the request list to the cellular phone 10. The cellular phone 10 extracts the content data recorded in the received request list from the data storage 11 and transmits the content data to the cellular phone 20. The cellular phone 20 receives the content data through the data receiver 26.

Abstract: A method and a system are disclosed for identifying a gas type. The system includes a first sensor in contact with the gas and which produces a first electrical output signal indicative of a first condition of the gas. Similarly, a second sensor is also in contact with the gas and produces a second electrical output signal indicative of a second condition of the gas. A processor receives the output signals as input signals from the first and second sensors and determines the type of gas by calculation or from lookup tables stored in memory accessible to the processor. The first and second conditions of the gas are selected from the group of temperature, mass flow rate, temperature and pressure.

Abstract: A method and a system are disclosed for identifying a gas type. The system includes a first sensor in contact with the gas and which produces a first electrical output signal indicative of a first condition of the gas. Similarly, a second sensor is also in contact with the gas and produces a second electrical output signal indicative of a second condition of the gas. A processor receives the output signals as input signals from the first and second sensors and determines the type of gas by calculation or from lookup tables stored in memory accessible to the processor. The first and second conditions of the gas are selected from the group of temperature, mass flow rate, temperature and pressure.

Abstract: An improved hot wire gas flow sensor is disclosed having a housing with a passageway in series with a passageway through which the gas flow is measured. The housing includes both a hot wire and cold wire disposed within the passageway. A current circuit maintains the temperature differential between the hot wire and cold wire preferably in the range of 30° C. to 100° C. by varying the current flow through the hot wire. Current limiting circuitry is then utilized to limit the current flow through the hot wire and thus the temperature of the hot wire in order to prevent possible combustion of the gas in the passageway. Additionally, a current augmenting circuit augments the current flow through the hot wire for a limited period of time following the electrical energization of the flow sensor in order to provide rapid heat up of the hot wire in the hot wire sensor.

Abstract: In flow detection by a thermal-type flow measuring instrument, a flow rate valve with reduced measurement error due to temperature variation can be obtained even under environment where a fluid temperature and a circuit temperature are different. A measurement error due to temperature variation of the fluid of the thermal-type flow measuring instrument can be corrected on the basis of a temperature of the fluid by adjusting the measurement error to be constant ratio irrespective of the flow rate. On the other hand, a temperature characteristic of the circuit is adjusted to be substantially zero %.

Abstract: An air flow rate measuring device for an internal combustion engine is disclosed. The air flow rate measuring device has a casing provided downstream from an air cleaner element for purifying intake air to the internal combustion engine, a duct connected fluidly to and downstream from the casing, and an air flow meter provided in said duct, for measuring an air flow rate taken into the internal combustion engine. A cross-sectional area of a connection portion between the casing and the duct, taken perpendicularly to the direction of air flow is the minimum cross-sectional area in the duct.

Abstract: Disclosed is an air flow rate measurement apparatus comprising a heating resistor and a temperature sensing resistor for detecting an intake-air flow rate to be sucked into an internal combustion engine, and a circuit module for outputting an electric signal corresponding to said intake air flow rate, said module being electrically connected to said heating resistor and said temperature sensing resistor. The apparatus is featured in that said heating resistor and said temperature sensing resistor are inserted together with an element for measuring an intake air temperature through an opening formed in the wall of an air passage so that said three elements are located in said air passage and the module is fixed to the air passage. The apparatus is of low cost and small sized.