Abstract: A vehicle (20) transmits an LF command (Wa), an electronic key (30) transmits, to the vehicle (20), an RF command responsive to the LF command (Wa), the vehicle (20) transmits, to the electronic key (30), an LF command (Wb) having a longer packet length than the LF command (Wa), and the electronic key (30) transmits, to the vehicle (20), an RF command responsive to the LF command (Wb) on the basis of the electric field strength of an LF-RSSI burst of a part of the LF command (Wb), thus turning on an interior light (501).

Abstract: In digital wireless communication performed between a vehicle and an electronic key terminal, the electronic key terminal and the vehicle periodically perform advertising transmission at a first time interval, periodically perform, at a second time interval, verification communication of confirming whether authentication of the electronic key terminal is established after the advertising transmission, periodically perform, at a third time interval, periodic communication performed after the authentication is established in the verification communication, and set the third time interval of the periodic communication to be longer than the second time interval of the verification communication. Accordingly, the responsiveness of the communication between the electronic key terminal and the vehicle can be improved. In addition, the first time interval of the advertising transmission is set to be longer than the second time interval of the verification communication.

Abstract: A vehicle (20) transmits an LF command (Wa), an electronic key (30) transmits, to the vehicle (20), an RF command responsive to the LF command (Wa), the vehicle (20) transmits, to the electronic key (30), an LF command (Wb) having a longer packet length than the LF command (Wa), and the electronic key (30) transmits, to the vehicle (20), an RF command responsive to the LF command (Wb) on the basis of the electric field strength of an LF-RSSI burst of a part of the LF command (Wb), thus turning on an interior light (501).

Abstract: A first mobile device can be mounted in a vehicle and includes an input unit and an output unit that can output an instruction instructing the vehicle to at least unlock the vehicle. The first mobile device is capable of wireless communication with a first on-board device and includes an operation unit. The first mobile device transmits a fourth signal having a first value of second identification information to the first on-board device. The first on-board device that has received the fourth signal changes the second identification information held in the first on-board device to the first value.

Abstract: A portable device performs two-way communication with an on-board device. The portable device has an operating circuit, a communication circuit, and a controller circuit. The operating circuit accepts an operation for stopping communication with the on-board device. The communication circuit receives a first signal from the on-board device and transmits to the on-board device a second signal including information on reception strength of the first signal and information on communication stop corresponding to the operation accepted by the operating circuit. When the reception strength of the first signal received by the communication circuit is less than or equal to a first threshold, the controller circuit causes the communication circuit to stop the communication with the on-board device.

Abstract: A first mobile device can be mounted in a vehicle and includes an input unit and an output unit that can output an instruction instructing the vehicle to at least unlock the vehicle. The first mobile device is capable of wireless communication with a first on-board device and includes an operation unit. The first mobile device transmits a fourth signal having a first value of second identification information to the first on-board device. The first on-board device that has received the fourth signal changes the second identification information held in the first on-board device to the first value.

Abstract: An on-vehicle device includes a determination unit, an instruction unit, and a modification unit. The determination unit determines whether to unlock doors based on a rolling code from a portable device and a reference rolling code to be collated with the rolling code. When the determination unit determines to unlock the doors, the instruction unit instructs the portable device to increase a value of the rolling code. When the portable device accepts the instruction from the instruction unit, the modification unit increases a value of the reference rolling code to be used in the determination unit.

Abstract: This vehicular near field communication system has a configuration where a portable device receives a first signal and a second signal respectively transmitted from a vehicle-exterior antenna and a vehicle-interior antenna of an on-board instrument mounted in a vehicle, measures a first received signal strength from the first signal, measures a second received signal strength from the second signal, adds an offset to the second received signal strength, and transmits a response signal to the on-board instrument in accordance with the first received signal strength and the second received signal strength added with the offset, so as to be able to prevent a portable device from being locked in a cabin even though the portable device is shielded by a metal in the cabin.

Abstract: This short-distance radio communication system for a vehicle includes an in-vehicle unit having more than one antenna and a portable unit performing radio communications with the in-vehicle unit. The in-vehicle unit transmits a first burst together with a call signal for calling the portable unit through a first antenna, and transmits a second burst subsequent to the first burst through a second antenna. The portable unit receives the signals transmitted from the in-vehicle unit, measures respective received signal strength indicators from the first burst and the second burst contained in the received signals, and responds to the in-vehicle unit according to results of comparing the respective indicators with given thresholds.

Abstract: This vehicular near field communication system has a configuration where a portable device receives a first signal and a second signal respectively transmitted from a vehicle-exterior antenna and a vehicle-interior antenna of an on-board instrument mounted in a vehicle, measures a first received signal strength from the first signal, measures a second received signal strength from the second signal, adds an offset to the second received signal strength, and transmits a response signal to the on-board instrument in accordance with the first received signal strength and the second received signal strength added with the offset, so as to be able to prevent a portable device from being locked in a cabin even though the portable device is shielded by a metal in the cabin.

Abstract: This short-distance radio communication system for a vehicle includes an in-vehicle unit having more than one antenna and a portable unit performing radio communications with the in-vehicle unit. The in-vehicle unit transmits a first burst together with a call signal for calling the portable unit through a first antenna, and transmits a second burst subsequent to the first burst through a second antenna. The portable unit receives the signals transmitted from the in-vehicle unit, measures respective received signal strength indicators from the first burst and the second burst contained in the received signals, and responds to the in-vehicle unit according to results of comparing the respective indicators with given thresholds.

Abstract: An electron beam exposure apparatus for exposing a wafer with an electron beam includes a section for generally controlling a wafer exposing system, a first buffer memory for temporarily storing exposure data, a second buffer memory for temporarily storing the exposure data, a first exposing section for irradiating the wafer with an electron beam based on exposure data output from the first buffer memory, and a first comparing section for comparing exposure data output from the first buffer memory with exposure data output from the second buffer memory and notifying the comparison results to the general control section. The exposure data stored in the first buffer memory and the exposure data stored in the second buffer memory are identical to one another when no error is involved. Further, an exposure apparatus and a pattern error detection method for accurately detecting an error of an exposure pattern formed to a wafer is disclosed.

Abstract: A digital signal receiver capable of obtaining a favorable receiving performance even if the input signal level changes rapidly is presented. A control voltage for controlling a variable gain amplifier is read by a microprocessor, and an operation-starting point of the variable gain amplifier is shifted by using this control voltage. As a result, a favorable level fluctuation response characteristic is obtained regardless of the input level.

Abstract: An electron beam exposure apparatus for exposing a wafer with an electron beam includes a section for generally controlling a wafer exposing system, a first buffer memory for temporarily storing exposure data, a second buffer memory for temporarily storing the exposure data, a first exposing section for irradiating the wafer with an electron beam based on exposure data output from the first buffer memory, and a first comparing section for comparing exposure data output from the first buffer memory with exposure data output from the second buffer memory and notifying the comparison results to the general control section. Further, an exposure apparatus and a pattern error detection method for accurately detecting an error of an exposure pattern formed to a wafer is disclosed.

Abstract: A receiver for a digital broadcasting service have a compatibility between tuning to a desired channel at a short period of time and an improve ment of a bit error rate (BER) characteristics. In a case where a target wave is fluctuated, to prevent the receiver from having a significant declination of BER characteristics and to ensure the reproduction of high quality images, the receiver includes an automatic gain controller including a loop filter in which the frequency range of the loop filter can be switched according to an output of a synchronous state discriminator. The frequency band of the loop filter is selectively adjusted to one setting designed for minimizing the duration for tuning a desired channel before a synchronous state is established. After the synchronous state established, the frequency band of the loop filter is switched to another setting designed for enhancing BER characteristics.

Abstract: In a receiver supporting multiple data rates, a sweep control range is calculated on the basis of the data rate of the carrier of the channel to be selected and sweep control is executed on the oscillated frequency by VCO 8 within the sweeping frequency range so that synchronization locking to the carrier is attained and thereby an erroneous channel selection is prevented.

Abstract: The invention presents an apparatus capable of demodulating stably if there are time-course changes in the constituent parts in a demodulator of digital modulated signal. This demodulator comprises an operator for setting the oscillation frequency of a local oscillator 2, and within a passing frequency band of a band pass filter BPF 3, the operator controls the local oscillator 2 so that the frequency of the output signal of a first mixer 1 may settle within a control band in a controllable frequency band of an AFC feedback loop composed of an orthogonal detector 4, a carrier regenerator 9, a frequency error detector 10, a frequency controller 11, a signal selector 12, a D/A converter 13, and a VCO 14, and a local carrier is issued from the local oscillator 2 to the first mixer 1.

Abstract: Disclosed is a multicolumn charged-particle beam lithography system having the circuitry of a settlement wait time control unit thereof simplified. The settlement wait time control unit controls a settlement wait time to be spent by each of amplifiers connected to main deflectors necessary to realize concurrent exposure among columns. The charged-particle beam lithography system has a plurality of columns for patterning an exposed sample by deflecting and sweeping a charged-particle beam on the exposed sample according to expose pattern data. The charged-particle beam lithography system includes a settlement wait time control unit for controlling a settlement wait time to be spent by each of the amplifiers connected to the deflectors necessary to realize concurrent exposure among the columns.

Abstract: A method of exposing a wafer to a charged-particle beam by directing to the wafer the charged-particle beam deflected by a deflector includes the steps of arranging a plurality of first marks at different heights, focusing the charged-particle beam on each of the first marks by using a focus coil provided above the deflector, obtaining a focus distance for each of the first marks, obtaining deflection-efficiency-correction coefficients for each of the first marks, and using linear functions of the focus distance for approximating the deflection-efficiency-correction coefficients to obtain the deflection-efficiency-correction coefficients for an arbitrary value of the focus distance. A device for carrying out the method is also set forth.

Abstract: A digital signal receiver capable of obtaining a favorable receiving performance even if the input signal level changes rapidly is presented. A control voltage for controlling a variable gain amplifier is read by a microprocessor, and an operation-starting point of the variable gain amplifier is shifted by using this control voltage. As a result, a favorable level fluctuation response characteristic is obtained regardless of the input level.