Abstract: A remote control device for an automotive vehicle wherein a transmitter (10) is received in a holder (2), with side-marker lights and taillights staying on, to connect holder-side contacts (3, 4) to transmitter-side contacts (16, 17), and the transmitter (10) is removed from the holder (2) to disconnect the transmitter-side contacts (16, 17) from the holder-side contacts (3, 4). A differentiating circuit (21) detects the disconnection of the transmitter-side contacts (16, 17) from the holder-side contacts (3, 4) by the removal of the transmitter (10) in the on position of the side-marker lights and taillights, and a timer (22) clocks a predetermined timer time over which LEDs illuminate manipulation keys (12) of the transmitter (10). Only the removal of the remote control transmitter from the holder permits the manipulation keys to be readily illuminated.

Abstract: A switch matrix having internal redundancy by combining outputs of two internal channels to form one single internally redundant channel. 1 by N, M by 1 and M by N switch matrices may be constructed using the principles of the present invention. Each input signal line is coupled between a signal input and a terminating resistor and each output signal line is coupled between a signal output and a terminating resistor. Switching nodes are formed that comprise an input line, a plurality of output lines, and a plurality of pairs of couplers that are respectively interconnected by way of respective switches used to select the input line and couple it to a respective output line. Pairs of output signal lines are connected to a single signal output to form internally redundant channels. The nodes may include a second serially coupled switch connected between the input and output couplers to provide redundancy if either one of the switches fail in a closed state.

Abstract: An electronic identification system e.g. for identifying goods in a retail store, comprises an interrogator and a number of transponders. Each transponder includes a number of data registers, and a counter for selecting the registers one at a time in sequence. When the transponder receives an interrogation signal from the interrogator, it returns a response signal containing data from the currently selected register. When the transponder receives a switch signal from the interrogator, it steps the counter on to select the next register in the sequence. One of the bits in the selected register may be used as a mode switching bit, for switching the response signal between a normal power level and a reduced power level.

Abstract: The transponder detector has an antenna for radiating a power signal to an identification transponder of an unidentified type and for reading a response signal characteristic from the transponder. A plurality of power signal and response signal characteristic parameters associated with transponder communication protocols are serially selected and implemented while an analysis of the response signal characteristic is carried out to determine whether the response signal characteristic matches the selected parameters and to produce an identification match signal. The result of the match signal is displayed as text identifying the transponder make and model number on an LCD display, in the case of a hand-held universal transponder detector. The device is particularly useful for confirming the presence and type of transponders embedded in the head of keys.

Abstract: A radio selective calling receiver which can improve the precision of a timepiece up to the clock precision of a reception signal from a base station is provided. A bit synchronization section establishes bit synchronization of a digital signal from a reception section to output a reproduction clock. A frequency divider for a timepiece function frequency-divides a reference clock with insufficient precision, which is supplied from a reference clock generation section, by a fixed value while the digital signal is in a frame step-out state. While the digital signal is in a frame synchronized state, the frequency divider variably frequency-divides the reference clock by using a phase correction signal for correcting an internal phase advance/delay, which is output from the bit synchronization section, thereby correcting a gain/loss in time displayed on a display section.

Abstract: A remote control system is provided for remotely controlling at least two electronic devices one of which is a master device and the other is a slave device. Each device has a remote control sensor and both devices are connected with each other by a bus. The master device producers a command signal for commanding the slave device to send a connection confirmation signal representing that the slave device is connected to the bus. The slave device sends a connection information signal representing that the slave device is connected to the bus and is remotely controllable in response to the command signal. The master device makes a remote control signal received by the own remote control sensor ineffective when receiving the connection information signal.

Abstract: A hand-held device contains a paging receiver and a microphone to accept dictation of messages. A common digital data store holds received transmissions and dictated messages.

Abstract: The outputted voltage of a rectifier 3 is detected by a voltage detector circuit 17. When the detected voltage value is low (received radio wave is weak, distance is long), a controller 20 turns off a switch 16 to connect only a capacitor 14 to the output of the rectifier 3, so that the capacitances of the capacitors are decreased and the build up of a power voltage is accelerated. On the other hand, when the detected voltage value is higher than a prescribed level (received radio wave is powerful, distance is short), the controller 20 turns on the switch 16 to connect capacitors 14, 15 in parallel with the output of the rectifier 3, so that the capacitances of the capacitors are increased and a ripple is fully removed. Thus, communications can be made while preventing a malfunction due to the ripple.

Abstract: A security system is for determining whether a person has possession of an issued identification card. The system includes a plurality of identification cards. Each one of the issued cards has a plurality of addressable positions. Each one of the addressable positions having an indicium. Each one of a plurality of authorized persons is assigned a corresponding one of the identification cards. The indicium at one of the addressable positions on one of the assigned cards being different from the indicium at the same one of the addressable positions on another one of the assigned cards. In a preferred embodiment of the invention, the addressable positions are arranged in a matrix of rows and columns. The indicium at each of the addressable positions of one of the assigned cards is different from the indicium at each of the addressable positions of the other ones of the assigned cards.

Abstract: A system and method of authentication electronic transactions in which personal hand writing patterns like signatures are used. Signatures are conveyed from sender to receiver through a data communications channel and stored as data streams. The method is based on the fact that nobody can hand write two identical patterns. The result of the authentication test is false if the new hand writing pattern is identical or too close to any of the previously stored patterns.

Abstract: A selective calling receiver detects a message contained in the received selective calling signal and a message identification code given to this message. A counter counts the number of messages for each message identification code and generates the count value, and the messages and said count value are stored in a memory. When the messages stored in the memory are displayed, the message having the message identification code whose count value is greater is first displayed. Continuously, the message of the message identification number is displayed in order of a greater count value.

Abstract: A symbol detector (110) includes an analog-to-digital converter (115) for converting signal voltages to digital values and peak and valley counters (310, 315) for tracking the digital values to determine peak and valley values associated with high and low voltages of the signal. The symbol detector (110) further includes calculation circuitry (356) for calculating upper, lower, and center thresholds based on the peak and valley values and a decoder (125) for generating data symbols in accordance with the upper, lower, and center thresholds.