Abstract: A battery charger with charging parameter values derived from communication with a battery pack to be charged. Communication is over a one-wire bus with battery pack transmissions in response to charger inquiries. The battery charger may be in the form an integrated circuit driving a power transistor or other controllable DC supply. A battery pack may contain a program with multiple charging currents and charging interval termination methods such as time, temperature rise, and incremental voltage polarity. A lack of communication may be invoke a default charging program or denial of access to the charger. The charger also communicates over a high-speed three-wire bus with an external computer for analysis of identification information acquired from the battery and for control of the charger.

Abstract: A battery charger with charging parameter values derived from communication with a battery pack to be charged. Communication is over a one-wire bus with battery pack transmissions in response to charger inquiries. The battery charger may be in the form an integrated circuit driving a power transistor or other controllable DC supply. A battery pack may contain a program with multiple charging currents and charging interval termination methods such as time, temperature rise, and incremental voltage polarity. A lack of communication may be invoke a default charging program or denial of access to the charger. The charger also communicates over a high-speed three-wire bus with an external computer for analysis of identification information acquired from the battery and for control of the charger.

Abstract: A battery charger with charging parameter values derived from communication with a battery pack to be charged. Communication is over a one-wire bus with battery pack transmissions in response to charger inquiries. The battery charger may be in the form an integrated circuit driving a power transistor or other controllable DC supply. A battery pack may contain a program with multiple charging currents and charging interval termination methods such as time, temperature rise, and incremental voltage polarity. A lack of communication may be invoke a default charging program or denial of access to the charger. The charger also communicates over a high-speed three-wire bus with an external computer for analysis of identification information acquired from the battery and for control of the charger.

Abstract: Serial bus modules with unique multibit identifications that may be searched with multiple modules on a single bus. Modules may contain temperature history per integrated Arrhenius temperature dependent signal. Modules may be packaged as tokens or as two or three lead plastic plastic, also with the three lead packages further functionality as sensors or switches may be incorporated into the modules.

Abstract: A temperature detector comprising temperature sensing circuitry, calibration circuitry, and power regular circuitry. The temperature sensing circuitry has an output that varies with temperature to create a temperature variation. The calibration circuitry is coupled to receive the output that varies with temperature to create a temperature variation. The calibration circuitry interprets the temperature variation and outputs a valve that represents the temperature. The power supply regulator circuitry coordinates power to the temperature sensing circuitry.

Abstract: A method of communicating information between a host device and a potentially portable module device which measures thermal accumulation over time via a temperature controlled counter. The temperature controlled counter may operate using substantially Arrhenius' law. The host device communicates with the portable module via a single wire bidirectional data bus. The single wire bus and one-wire communication protocol allows data flow between a host and a plurality of devices connected to the single wire bus. The single wire bus allows for a great versatility of uses for the portable module.

Abstract: A battery charger with charging parameter values derived from communication with a battery pack to be charged. Communication is over a one-wire bus with battery pack transmissions in response to charger inquiries. The battery charger may be in the form an integrated circuit driving a power transistor or other controllable DC supply. A battery pack may contain a program with multiple charging currents and charging interval termination methods such as time, temperature rise, and incremental voltage polarity. A lack of communication may be invoke a default charging program or denial of access to the charger. The charger also communicates over a high-speed three-wire bus with an external computer for analysis of identification information acquired from the battery and for control of the charger.

Abstract: A battery charger with charging parameter values derived from communication with a battery pack to be charged. Communication is over a one-wire bus with battery pack transmissions in response to charger inquiries. The battery charger may be in the form an integrated circuit driving a power transistor or other controllable DC supply. A battery pack may contain a program with multiple charging currents and charging interval termination methods such as time, temperature rise, and incremental voltage polarity. A lack of communication may be invoke a default charging program or denial of access to the charger. The charger also communicates over a high-speed three-wire bus with an external computer for analysis of identification information acquired from the battery and for control of the charger.

Abstract: A single wire data bus is utilized by a bus master to communicate with and identify electronic devices also connected to the single wire data bus. Each of the electronic devices include a unique ID (identification), wherein the bus master, using a one-wire protocol, can identify all of the electronic devices connected to the single wire data bus.

Abstract: A battery charger with charging parameter values derived from communication with a battery pack to be charged. Communication is over a one-wire bus with battery pack transmissions in response to charger inquiries. The battery charger may be in the form an integrated circuit driving a power transistor or other controllable DC supply. A battery pack may contain a program with multiple charging currents and charging interval termination methods such as time, temperature rise, and incremental voltage polarity. A lack of communication may be invoke a default charging program or denial of access to the charger. The charger also communicates over a high-speed three-wire bus with an external computer for analysis of identification information acquired from the battery and for control of the charger.

Abstract: A wireless-accessible module which provides first and second wireless-transmitter control signals, such that the first transmitter control signal can be activated automatically, in response to incoming wireless signals, but the second transmitter control signal can only be activated by manual input or direct command. Preferably the two control signal outputs are used to select the power level of transmission on a single predetermined frequency; but alternatively these outputs may be used to control two different RF transmitters and/or two different antennas.

Abstract: A power regulator for providing a fixed output voltage that is consistent with a reference voltage and independent of a varying power supply, includes a first input connected to a reference voltage generator; a second input adapted to be connected to a varying power supply; two outputs for connection to circuitry such as oscillators; a charge pump; and three transistors. The drain and gate of the first transistor are connected to the charge pump and the source is connected to the reference voltage generator; the gate of the first transistor is coupled to the gates of the second and third transistors; and the sources of the second and third transistors are coupled one of the two outputs.

Abstract: A temperature detector comprises temperature sensing circuitry calibration circuitry, and power regular circuitry. The temperature sensing circuitry has an output that varies with a temperature to create a temperature variation. The calibration circuitry is coupled to receive the output that varies with temperature to create a temperature variation. The calibration circuitry interprets the temperature variation and outputs a value that represents the temperature. The power supply regulator circuitry coordinates power to the temperature sensing circuitry. Alternate embodiments of the temperature detector comprise temperature sensing circuitry, calibration circuitry, and resolution enhancement circuitry. The temperature sensing circuitry has an output that varies with a temperature to create a temperature variation. The calibration circuitry is coupled to receive the output that varies with temperature to create a temperature variation.

Abstract: A serial-port memory is positioned in a substantially token-shaped body. The substantially token-shaped body has a perimeter and a flange extending from a portion of the perimeter. The serial-port memory comprises a serial port, a scratchpad memory coupled to the serial port, a second memory coupled to the scratchpad memory; and control logic coupled to the serial port and the scratchpad and second memories. The control logic transfers information from the scratchpad memory to the second memory as a block pursuant to a block transfer command received at the serial port.

Abstract: A battery charger with charging parameter values derived from communication with a battery pack to be charged. Communication is over a one-wire bus with battery pack transmissions in response to charger inquiries. The battery charger may be in the form an integrated circuit driving a power transistor or other controllable DC supply. A battery pack may contain a program with multiple charging currents and charging interval termination methods such as time, temperature rise, and incremental voltage polarity. A lack of communication may be invoke a default charging program or denial of access to the charger. The charger also communicates over a high-speed three-wire bus with an external computer for analysis of identification information acquired from the battery and for control of the charger.

Abstract: A communication module comprises a substantially token-shaped body with first and second electrically conductive surface areas. The first and second surface areas are electrically isolated from each other and circuitry is positioned in the cavity within the substantially token-shaped body, and has connections to said first and second areas. The substantially token-shaped body has a perimeter around it. The first and second electrically conductive surface areas form a substantial portion of the substantially token-shaped body. The first and second electrically conductive surface areas form a cavity. One of the surface areas forming a flange around the perimeter of the substantially token-shaped body. The flange preferably resides in one geometric plane. The circuitry provides for the receipt and transmission of digital signals that are determined as voltage differences between said first and second areas.

Abstract: A battery charger with varying applied voltage and varying series resistance invoked in response to battery charge level provides an optimizable multipart load line for charging. The multipart load line may be programmed into a memory within the battery charger, and thereby common design battery chargers may be configured with optimized multipart load lines for diverse batteries. Programming access can be over the charge current output terminal for both one-wire communication and programming high voltage for EPROM programming.

Abstract: Reset monitor for detection of power failure and external reset for devices such as microprocessors with the reset monitor providing a single settling time hold down of a reset signal. Preferred embodiments include bandgap reference with high current side compensating resistor, bond out options for analog parameter selection, glitch free state machine control of both detections, and external pushbutton debouncing both depression and release.

Abstract: Battery monitor (100) with a transient pull down (172) for backup batteries which is active during power up and prevents the feedthrough charging of low or dead batteries causing a spurious power fail indication.

Abstract: A secure electronic circuit which (in its early life) can be electronically calibrated and written to, but thereafter holds its data securely.