Abstract:
A proximity detection system (100) includes a substantially flat electronic circuit that can be printed on a label or tag (113). The tag (113) is used with an electronic device (103, 107, 109, 111) for wireless communication in a network where the tag is affixed to the electronic device for authenticating access to the network. Any number of tags (113) may be include different encryption algorithms for communicating in the network based on groups or subgroups of electronic devices.
Abstract:
A method and apparatus for charging a rechargeable battery (110) that takes into account the use patterns of the particular battery. A user may only discharge the battery a little and recharge it frequently which is a low capacity high life cycle use pattern, or discharge the battery almost completely and place the battery on charge less frequently indicating a high capacity low life cycle use pattern. Herein, a battery is installed in an electronic device wherein a battery discharge determination circuit and a discharge determination algorithm determine the discharge level of the battery when a charging circuit is placed on the battery. The measurement algorithm determines from the rechargeable battery discharge level measurement how to recharge the rechargeable battery. The measurement algorithm may also determine how to recharge the rechargeable battery based on a plurality of previous measurements stored either in the electronic device or the battery.
Abstract:
A proximity detection system (100) includes a substantially flat electronic circuit that can be printed on a label or tag (113). The tag (113) is used with an electronic device (103, 107, 109, 111) for wireless communication in a network where the tag is affixed to the electronic device for authenticating access to the network. Any number of tags (113) may be include different encryption algorithms for communicating in the network based on groups or subgroups of electronic devices.
Abstract:
A method for utilizing a personal agent in a communications device for selecting the method of delivery of at least one communication having multiple networking type modes (200) includes discovering all available delivery options (203). One or more operational parameters are detected (205) including information based on the agent's knowledge of the user's schedule. The impact on battery consumption of the communication is also estimated (209) and a key metric is determined (211) based on the type of delivery options that are available. Finally, an optimal delivery option is determined (213) where it can be either automatically selected or presented to the user of the device.
Abstract:
A battery type detector for battery-charging equipment is disclosed. Operational characteristics of the charging equipment are modified in accordance with the battery type detected.
Abstract:
An antenna for a portable cellular telephone (100) includes a quarter-wavelength ground radiator (106) and a helical coil (104) capacitively coupled to an extendable half-wavelength radiator (102). The extendable half-wavelength radiator (102) includes a metallic coil (209) molded in plastic. The ground radiator (106) includes a serpentined transmission line (302) on a flexible circuit board (310). The helical coil (104) and ground radiator (106) are coupled by a transmission line (110) to a duplexer (112). The duplexer couples transmitter signals from a radio transmitter (114) to the antenna and receiver signals from the antenna to a radio receiver (116). The antenna may be advantageously utilized in any portable radio applications where small size and immunity to hand induced radiation losses are desired.
Abstract:
An antenna for a portable cellular telephone (100) includes a quarter-wavelength ground radiator (106) and a helical coil (104) capacitively coupled to an extendable half-wavelength radiator (102). The extendable half-wavelength radiator (102) includes a metallic coil (209) molded in plastic. The ground radiator (106) includes a serpentined transmission line (302) on a flexible circuit board (310). The helical coil (104) and ground radiator (106) are coupled by a transmission line (110) to a duplexer (112). The duplexer couples transmitter signals from a radio transmitter (114) to the antenna and receiver signals from the antenna to a radio receiver (116). The antenna may be advantageously utilized in any portable radio applications where small size and immunity to hand induced radiation losses are desired.