Abstract: A system and method for extracting a data signal transmitted by a signal source encoding the data signal onto first and second binary signals as a known two-bit binary state of the two signals taken together includes memory storing single bit binary patterns representative of known bit pattern and a reference table of two bit binary state couples representative of a data signal bit encoded onto the first and second binary signals. A processor monitors one of the first or second binary signals and compares the one monitored binary signal to the stored single bit binary patterns in memory. The processor stores, if a match is found, the respective binary states of the first and second binary signals in memory as a pair of two bit binary states.

Abstract: A circuit for conditioning a battery having a casing and battery charging terminals for charging the battery from an external power source. The conditioning circuit is preferably contained within the battery casing and comprises a discharging circuit for discharging the electrical charge of the battery and a switching circuit coupled to the battery charging terminals and to the discharging circuit for automatically selecting between a first state, disabling the battery charging terminals from providing charging access to the battery and coupling the discharging circuit to the battery for discharging the battery as long as the battery voltage is above a predetermined voltage level, and a second state, disconnecting the discharging circuit from the battery whenever the battery voltage is at or below the predetermined voltage level and enabling the battery charging terminals for providing charging access to the battery.

Abstract: A system and method for programming a wireless network access device which has both a keypad for manually entering data and commands to the device, and a device Input/Output data interface bus port for communicating data and command signals between an external source and the device databus including a module having a processor that contains and operates in accord with a control program. The processor further has in memory, prestored data and command signals necessary for programming the device. A cable, or connector couples the module to the device Input/Output data interface bus port for transferring information between the module processor and the device databus. The processor control program transfers data and command signals stored in the module's memory to the device databus for at least partially programming the device.

Abstract: A system for connecting a plurality of cellular telephones, each responsive to device-specific command signals for its operation, to an automotive electronics and communications system through a bus connector having a known universal signal format, includes a docking station having a cradle member shaped for receiving at least one cellular telephone. An interface unit contains the hardware and firmware drivers necessary for controlling the selected cellular telephone. A user selected cable having a specific signal path configuration selects the needed drivers. A second cable connects the interface unit with the bus connector for communicating signals therebetween.

Abstract: In a wireless network access device, access to which is controlled by a control program retained in a memory in the device, a method of preventing unauthorized access to the device comprising the steps of: storing in the memory of the device, data representing a key code and an access enabling code; reading the key code from the device and generating, in accord with a known method, an access code based thereon; and, comparing the access code with the access enabling code and, if equal, enabling access to the device, otherwise denying access to the device. The invention also includes a system and a wireless network access device both of which prevent unauthorized access for reprogramming purposes.

Abstract: An apparatus and method for indicating an incoming call that generates a voltage signal with a value representative of the current drawn by operation of the device. A circuit monitors the voltage signal and generates a waiting for call state signal whenever the value of the voltage signal decreases from a first selected higher value to a first selected lower value for a first preselected period of time. An RF detection circuit monitors the status of the device's transmitter and generates a transmitter active status signal whenever RF appears for a selected period of time.