Abstract:
A radiotelephone system (100) includes a radiotelephone (103) having a subscription lock and a removable subscriber identification module (SIM) card (105) containing an international mobile subscriber identification (IMSI). The subscriber lock is used to restrict registration into the radiotelephone system (100) to only those radiotelephones which contain a SIM card which has an IMSI which falls within a range of valid IMSIs programmed into the radiotelephone or the user has entered a subsidy flag personal identification number (PIN) for permanently disabling the need for a valid IMSI.
Abstract:
A communication system (500) for transmitting and receiving radio frequency (RF) signals includes a base station (505) for transmitting an RF signal including at least compressed data and a plurality of correction factors, wherein the compressed data includes two-dimensional transformed image data which has been compressed by the base station (505) utilizing a plurality of orthogonal functions. The communication system (500) further includes a data communication receiver (510) coupled to the base station (505) for receiving the RF signal and for generating one-dimensional transformed image data therefrom by performing a one-dimensional transformation of the two-dimensional transformed image data utilizing the plurality of orthogonal functions. The data communication receiver (510) includes a controller (1025) for adding the plurality of correction factors to the one-dimensional transformed image data to generate a plurality of column signals which drive an active-addressed, rms-responding display (100).
Abstract:
A method and apparatus for initiating data communications from a radio communication device (101) to a computing device (103), the radio communication device (101) capable of operating in both a power-conserving, limited-function mode and a full-function mode. The radio communication device (101) elevates operation to the full-function mode in response to a need to communicate with the computing device (103), then transmits to the computing device (103) an attempt to communicate. The radio communication device (101) continues operation in the full-function mode for a predetermined response time period after completing the attempt to communicate, and retransmits the attempt to communicate in response to receiving a retry request from the computing device (103) before expiration of the predetermined response time period.
Abstract:
A selective call receiver (106) receives one or more message packets of a transmitted fragmented message, where each of the one or more message packets includes an address (1605) and message data (1610), and the message data (1610) includes an indication (1702) of whether more message packets are to be received for the fragmented message. The selective call receiver (106) receives an address of each message packet, and then correlates (2908) the address to one or more predetermined addresses. After a successful correlation (2908), the selective call receiver (106) decodes the message data (1610) of each message packet, and then successively stores (2928, 2936, 2942) the decoded message data (1610) to reconstruct the fragmented message. The selective call receiver (106) determines that the fragmented message is completely reconstructed after detection (2918) in the decoded message data (1610) an indication (1702) that no more message packets are to be received for the fragmented message.
Abstract:
A battery charger (102) includes an input terminal (124) for receiving control signals from radio (104). The control signals are received by a charge controller (112) which provides a charge rate to radio battery (106) which is a function of the control signal. Radio (104) includes a controller (126) which can sense the state of the radio battery (106), as well as changes in the state of radio (104). Controller (126) can then modify the control signal sent to charger (102) and therefor the battery charge rate proved by charger (102) based on certain changes in the state of battery (106) or radio (104).
Abstract:
A radio housing assembly (200) is provided which includes a housing chassis (220) and a plugable control housing (100). The control housing (100) includes nest portions (112, 114, 116, and 118) for inserting electrical controls, such as a toggle switch (120), a rotary switch (130), and a volume control (130). The nest portions receive, align and center the controls while firmly securing and positioning them in place. The control module (100) also includes a flexible circuit for coupling the controls to the radio circuitry. The control module (100) is then plugged in to the housing chassis (220) which includes a corresponding chamber (222) having ridge shaped features (224) for facilitating insertion.
Abstract:
A circuit interconnect system comprises a circuit pattern (22) on a rigid insulating sheet (17), forming a first circuit carrying substrate (12). A portion of the circuit pattern wraps around an edge of the insulating sheet and continues onto a vertical wall (20) of the sheet to provide a contact surface (24). An electrically conductive portion (16) of a second member (14) is mated to the first circuit carrying substrate by aligning the contact surface to the electrically conductive portion. An electrically conductive resilient material such as a conductive elastomer (35) or metal spring (35) provides electrical interconnection between the circuit pattern and the electrically conductive portion.
Abstract:
A resonant armature system (109, 114, 116) for generating a vibrating motion in response to an alternating excitation force comprises at least two planar suspension members (109), substantially parallel to each other and separated by a distance. The planar suspension member (109) comprises a plurality of independent planar spring members (112) arranged regularly about a central planar region (110) within a planar perimeter region (108). The resonant armature system (109, 114, 116) further comprises at least one movable mass (114) positioned between and coupled to the at least two planar suspension members (109) for resonating with the at least two planar suspension members (109) at a fundamental mode resonant frequency.
Abstract:
A surface mount component placement arrangement includes a circuit supporting substrate (202) having a first surface (308), and disposed thereon are a first pad array (502) and a first at least one aligning pad (506). A component (802) has a second surface (801), the second surface (801) substantially opposing the first surface (308), and disposed on the second surface (801) are second pad array (406) and a second at least one aligning pad (508). The first and second pad arrays (406, 502) at least partially overlap with each other. The aligning pads (506, 508) at least partially overlap with each other relative to a second tolerance of the placement operation. The partially overlapping pair of pads (506, 508) are oriented relative to each other such that when solder therebetween is liquid the surface tension of the solder can move the component (802) relative to the circuit supporting substrate.
Abstract:
A dual mode communication receiver comprises a first demodulator (108) for detecting information received in a first modulation format, and a second demodulator (112), responsive to the information detected in the first modulation format, for detecting information received in a second modulation format. The first and second demodulators (108, 112) share a common receiver front end (102). A power conservation circuit (104) is provided for selectively supplying power to the first and second demodulators (108, 112) for enabling the detecting of the information received in the first modulation format and the second modulation format, respectively.