Motorola Corporation

Other

Michael P Metroka

Robert K Krolopp

Joshua P Kiem

Kevin Daniel Kaschke

Thomas J Walczak

Robert M Johnson, Jr

Rashid M Osmani

Rolland R Hackbart

Thomas M Dillon

Rachid M Alameh

Stephen N Levine

Richard J Vilmur

Stephen V Cahill

John A Kalenowsky

Francis P Malaspina

Scott Burdell Davis

Kenneth W Bolvin

P J Gargulak

Raymond A Jenski

A cordless telephone system (300) comprises a portable station (305), a first base station (301) and a second base station (310). The first base station (301) communicates with the portable station (305) over a communication channel (441) when the portable station (305) is located within a first geographic coverage area (311). The second base station (310) communicates with the portable station (305) over a communication channel (441) when the portable station (305) is located within a second geographic coverage area (313). The first base station (301) includes a controller (302) adaptively configured to be a master controller (302). The second base station (310) includes a controller (308) configured to be slave controller (308) responsive to the controller (302) of the first base station (301) being adaptively configured to be the master controller (302). The master controller (302) communicates with the slave controller (308) over a communication path (315) to coordinate communications between the portable station (305) and at least one of the first base station (301) and the second base station (310) when the portable station (305) is located within the first geographic coverage area (311) and the second geographic coverage area (313), respectively. The cordless telephone system (300) advantageously provides an expandable geographic coverage area for a relatively low cost when the number of portable stations are relatively small and the communication traffic is relatively low.

Cordless radiotelephone system having an extendable geographic coverage

A radiotelephone system comprised of a radiotelephone-pair suitably intercoupled theretogether to permit transfer of data, such as NAM information, therebetween. A first of the radiotelephone-pair comprises a radiotelephone of conventional construction. A second radiotelephone of the radiotelephone-pair comprises a radiotelephone having circuitry to transmit efficiently an information signal upon a cellular, communication system of increased capacity. The data sequence contained in the first radiotelephone is transferred to the second radiotelephone to permit a communication link to be formed between the second radiotelephone and a cellular, communication network.

Mixed mode transceiver system

A portable electronic device (10) comprises a radio circuit (150) contained in a housing (152) having positive (156) and negative (158) contacts electrically coupled to the radio circuit (150). A substantially flat, elongated, flexible battery cell, forming a compliant energy storage device (32), provides a single, continuous wrist band (30) and has positive (160) and negative (162) terminals. A latch mechanism (176) releasably secures the housing (152) to the wrist band (30) between opposite ends (172, 174) of the wrist band (30), and permits the contacts (156, 158) of the housing (152) to align with and abut the respective terminals (160, 162) of the wrist band (30) while the wrist band (30) is worn on the user's wrist. Multiple housings (152, 180) may be stacked to add electrical functions. The contacts (156, 158) of the housing (152) and the terminals (160, 162) of the compliant energy storage device (32) are positioned to be substantially protected from contamination by the external environment and from contact with the user's wrist when the housing (152) is carried on the wrist band (30) and while the wrist band (30) is worn on the user's wrist.

Wrist carried electronic device

A disposable portable radiotelephone subscriber unit (101) comprises a power supply (255), a transceiver (205, 207) and a controller (215). The power supply (255) has stored therein a predetermined measure of power capacity (281). The transceiver (205, 207) is permitted to operate for a predetermined period of time (405) responsive to the predetermined measure of the power capacity (281). The controller (215) monitors a rate of depletion of the predetermined measure of the power capacity (281). The controller (215) permits operation of the transceiver (205, 207) when the power capacity (281) is being depleted at a desirable rate, thereby decreasing the predetermined period of time (405) that the transceiver (205, 207) is permitted to operate. The controller (215) prevents operation of the transceiver (205, 207) when the power capacity (281) is being depleted at an undesirable rate, thereby prolonging the predetermined period of time (405) that the transceiver (205, 207) is permitted to operate. Alternatively, the power supply (255) may be a memory unit (259) and the power capacity (281) may be calling time (279) or a future electronic date (275).

Disposable wireless communication device adapted to prevent fraud

A portable radiotelephone (200) adjusts its transmit power responsive to the position of a movable antenna (213). The antenna (213) is movable between a retracted (313) and an extended position (314). The portable radiotelephone (200) transmits at low power when the antenna (213) is retracted and at high power when the antenna (213) is extended. Additionally, the portable radiotelephone (200) can notify a remote base station of the change in transmit power at any time during transmission.

Transmitter having adjustable power levels responsive to the position of

A radiotelephone subscriber unit (101) comprises a memory unit (259) having stored therein an identification sequence including a phone number (MIN1 and MIN2) and an electronic serial number (ESN). The phone number (MIN1 and MIN2) is common to at least one other portable radiotelephone subscriber unit in a radiotelephone system (102) The electronic serial number (ESN) is unique to the portable radiotelephone subscriber unit (101) in the radiotelephone system.

Radiotelephone subscriber unit having a generic phone number

The method and apparatus of the present invention permits data entry in an electronic apparatus without using a keypad. By rotating a moveable element (104), a function, letter, or number is selected. The moveable element (104) is then moved in another direction to enter the selected item. The function, letter, or number can be displayed on a display (106), announced with a synthesized voice, or displayed and announced.

Electronic apparatus having keyless control

The extended error correction process of the present invention error corrects a data message that has been transmitted a plurality of times. The process first receives the data message at least twice, logically combining the first and second messages received to form an error indication word. The error indication word is then used to locate the error locations in each message after which some of the errors are complemented, depending on the total number of errors found. The message is then decoded and used for transmit power changes, channel reassignment, to release a call, etc.

Extended error correction of a transmitted data message

The process of the present invention error corrects sub-audible data words that have been transmitted over a voice channel. A data word may be transmitted up to three times if an acknowledge is not received by the transmitter. If any of the three possible repeats of the received data word are decodable, an acknowledgment is transmitted. If all three repeats of the data word contain uncorrectable errors, a bitwise majority vote is performed on the three data words. If the result of the majority vote is decodable, an acknowledgement is transmitted to the sender.

Method for error correction of a transmitted data word

Mixed-mode transceiver system

A battery type detector for battery-using and battery-charging equipment is disclosed. Operational characteristics of the using and charging equipment is modified in accordance with the battery type detected.

Method and apparatus for determining battery type and modifying

A capacitive power supply for powering a portable electrical device, such as a radiotelephone. The capacitive power supply is comprised of capacitors stacked vertically in a series connection of capacitive values capable of generating currents of levels great enough to power a radiotelephone for an extended period of time.

Capacitive power supply

A portable radiotelephone with a keypad, alphanumeric character display, and hands free function is disclosed. A movable flip element of the housing covers a keypad and other control buttons when in a closed, on-hook, position and activates the illumination of the keypad, enables the display, and enables the hands free function when in an open, off-hook, position. The duration of keypad illumination and display activation are timed to reduce battery drain and the hands free function may be deactivated with a hookswitch flash.

Communications device with movable element control interface

A battery type detector for battery-using and battery-charging equipment is disclosed. Operational characteristics of the using and charging equipment are modified in accordance with the battery type detected.

Growing community of inventors

Algonquin, IL, United States of America

Michael P Metroka