Abstract: A transponder (1) for the contactless communication with a base station (2) comprises an antenna resonant circuit (10) for receiving a modulated HF signal (5), signal processing means (13) for processing the modulated HF signal and for supplying a data signal (DS) and a clock signal (CLK), and data processing means (23) arranged to receive the data signal (DS) and the clock signal (CLK) and to process the data signal (DS), the clock signal (CLK) defining the processing speed of the data processing means (23) and the data processing means (23) being arranged to receive reset information (RI) for terminating the processing of the data signal (DS), the transponder (1) further comprising a frequency detector (31) arranged to receive the clock signal (CLK) and adapted to compare the frequency of the clock signal (CLK) with at least one limit frequency (fG1) and to supply the reset information (RI) to the data processing means (23).

Abstract: Disclosed is a radio paging receiver which has: a radio unit that receives a carrier wave modulated by a specific paging signal and a message signal following the specific paging signal; a demodulating unit that demodulates the modulated carrier wave into a signal; a decoding unit that decodes the signal demodulated by the demodulating unit into the specific paging signal and the message signal according to a predetermined signal format; a controller that compares the specific paging signal with a preset its own calling number and actuates a alert signal generating unit when the specific paging signal coincides with the calling number; and a display that displays a received message; wherein the radio paging receiver has a function that judges whether to apply a code inserting function to a received schedule message signal or not, the code inserting function being operated such that a predetermined code is inserted into a predetermined position of the received schedule message signal when applying the code ins

Abstract: A keyless entry system transmitter that achieves both a reduction in power consumption when transmitting radio signals, and enhances system convenience by boosting transmission power in cases where required. A set-voltage value corresponding to a function specified by operation of an operation switch is read from a corresponding-voltage memory portion, and this read set-voltage value is output to a DAC. Accordingly, when operation specifying the same function is again performed with the operation switch before a predetermined timeout time clocked by a timer has elapsed, a counter is incremented, and a voltage-setting output to the DAC increases in accordance with a count value thereof. As a result, voltage supplied to a transmitter unit through a regulator increases as well. Consequently, transmission power of a remote-control signal sent via a transmission antenna is also increased.

Abstract: A method and system for transferring pulse messages between remote-controlled modules in an automotive vehicle includes a single wire bus coupled to each of the modules for transferring the pulse messages between each of the modules. A receiver circuit associated with at least one of the modules and coupled to the bus provides a communication current to the bus. A transmitter circuit associated with at least one of the modules and also coupled to the bus transmits the pulse messages utilizing the communication current. The receiver circuit, thus, becomes active and accepts the pulse messages being transmitted by the transmitter circuit upon detecting the communication current being drawn from the receiver circuit.

Abstract: A radio communication apparatus which has plural incoming call informing methods including at least an incoming call informing method by vibration, the radio communication apparatus being available to connect to an external device, comprises a setting section for setting at least one incoming call informing method from the plural incoming call informing methods, a detecting section for detecting whether an electrical connection is made with an external device, and an informing section for detecting that the setting section sets the incoming call informing method by vibration as the at least one incoming call informing method on detection of the electrical connection of the electrical connection by the detection section and indicating that the setting section sets the incoming call informing method by vibration.

Abstract: A remote convenience system (10) includes a portable transmitter unit (14) and a receiver unit (18), and by a method, permits remote control of performance of a function, via a signal (16). Preferably, the system (10) is a remote convenience system for a vehicle (12). The transmitter unit (14) has a microcomputer (90) that provides a message that contains a function request. First and second signals are transmitted from the transmitter unit (14). Each signal is provided by a transmitter portion (70) at a different frequency and conveys the complete message. The receiver unit (18) has a detector (e.g., 190) tuned to receive the signal (16) for both the first and second frequencies, and can discern the complete message provided via both frequencies or either frequency. Thus, if the transmitter unit (14) is in a frequency dependent “dead spot”, communication is not prevented.

Abstract: A method and apparatus is used to of validate a vehicle identification number (VIN). At least a first VIN having a plurality of characters in a plurality of positions is received. At least a first character in a first position of the first VIN to inspected to determine if the first character is included in a first set of valid characters. The first character is identified as being in error when the first character is not in the first set of valid characters. The first character is replaced with a substitute character.

Abstract: A signal transmitted from an information service carrier is received b an antenna, and tuned and detected by an RF unit. The detected signal is demodulated and then supplied to a decoder unit. It is judged whether a distinction ID code coincides with the own ID code stored in an ID-ROM or not. If the codes coincide with each other, message information is obtained from a signal which is subsequently received, and an interrupt signal indicative of reception of an effective signal is outputted. In response to the interrupt signal, a control unit actives operation programs which are previously stored in a program memory. The received message information is temporarily stored in a temporary message storage buffer. A received message containing a keyword which is previously stored in a keyword storing unit is selected, and then stored in a received message storing unit.

Abstract: A portable subscriber unit (PSU) (222) operating in a plurality of messaging systems selects (605) a first messaging system to monitor for messages. The PSU then initiates (610) background scanning according to a scan list (326), including a plurality of system parameters ranked by appropriateness for the PSU, at a rate not slower than the rate established by a predetermined set of rules known to a controller (212) which sends the messages to the portable subscriber unit, in an attempt to find a system identifier identifying a second messaging system more appropriate for the PSU than the first messaging system. The PSU concurrently monitors (618) the first messaging system for receiving messages until identifying the second messaging system.

Abstract: A keyless entry system and sensor for unlocking the door locks of a vehicle. The sensor, preferably in the form of a piezoelectric crystal, is secured at a discrete location to an inner concealed surface of a body panel of the vehicle and electrically connected to an electronic signal processing module having an output relay. The output relay is electrically connected with the power control relay of the door lock, the sensor being structured to afford entry into a locked vehicle by sharply tapping the outer surface of the body panel at the exact location and limited area where the concealed sensor has been discretely secured. The system and sensor thus provides access to a vehicle that does not require the owner to carry a battery powered transmitter or rely on memorizing a numerical code.

Abstract: An intelligent credit card incudes a keypad for inputting numbers and other information, a processor for controlling the operation of the credit card, a power source, and an output device for selectively outputting the credit card number when the card is activated. The output device is a magnetic strip. A user inputs a sequence of numbers using the keypad. The received sequence of numbers are compared to a stored PIN number. If the sequence of numbers matches the PIN number, the card is activated, and the credit card number is output using the output device.

Abstract: In a remote control system having a transmitter and a receiver, a rolling code is ciphered to generate a ciphered rolling code by repeating, n times, an exclusive-OR operation on a constant code in a rolling code table and the rolling code as well as an-maximum shift keying. A key code specific to each control system is used as a constant code at the k-th exclusive-OR logic operation so that the k-th exclusive-OR logic operation becomes different from system to system resulting in different ciphering method for each system. The key code is set in an EEPROM in the process of control system production so that the rolling code may not be deciphered even by a design engineer as long as the key code is kept undisclosed.

Abstract: A system provides short range wireless data communication from a central control point (e.g., interrogator) to inexpensive endpoints (e.g., tags). The endpoints utilize the technology of modulated backscatter for transmission from the tags to the interrogator. The system uses a new downlink protocol for data transmission from the interrogator to the tags and a new uplink protocol for data transmission from the tags to the interrogator. Both protocols use a backoff/retry algorithm to randomly retransmit any non-acknowledged messages. System capacity from the tags to the interrogator is further enhanced by the use of uplink subcarrier frequency division multiplexing.

Abstract: After confirmation that a user is an authorized user by bringing a user certification into proximity to a user discriminating device, following the guidance of a touch panel display device, a battery is selected, and the battery, for which a lock thereof is unlocked, is taken out from a battery supply device. Thereafter, the battery is installed in a two electric wheeled vehicle in a parking apparatus, and the two wheeled electric vehicle is unlocked and used.

Abstract: In many communication service, such as for example virtual card calling (VCC), authentication methods are used to check the access authorization of the caller to the communication service, and thus to prevent possible misuse. A chance-controlled fee assessment is used to prevent possible misuse of the communication service.

Abstract: A system for effecting closure of one or more vehicle windows 30 comprises a portable transmitter unit 14 and a body control unit 12 which can communicate via an alternating magnetic field produced and detected by a pair of conducting coils 16a, 16b, and via a radio frequency transmitter 24 and receiver 22. On transmission of a R.F. closure request signal from the transmitter unit 14, a confirmation request signal is sent by the body control unit 12 via the magnetic link. The confirmation request signal is repeated during closure of the window. The transmission unit responds to each confirmation request signal by transmitting a R.F. confirmation signal, receipt of which enables raising of the window to be initiated or continued. Closure of the window is only initiated if the transmitter unit 14 is within the relatively short range of the magnetic link, and only continues while it remains within range.

Abstract: A two-way remote control unit with a graphical user interface controls various audio/video devices interconnected in a multimedia system. The remote control unit includes a transceiver for transmitting and receiving control commands to/from multimedia components, which are displayed in the user-friendly format on a display of the remote control unit. The user can scroll, select, browse, etc. through various menu items on the display, and activate any desired function on the multimedia system component by selecting the desired representation of that function on the display. In addition, the remote control unit communicates, also through wireless transmission, with a personal computer and obtains information from remote or local databases for either controlling or enhancing the operation of the multimedia system devices.