Abstract: A device includes an antenna, a transceiver, a radio frequency identification (RFID) tag, and a zero bias switch coupled to the antenna. The zero bias switch has a first path that couples the RFID tag to the antenna and isolates the RFID tag from the transceiver when the zero bias switch is in an unpowered state. A method includes selectively coupling an antenna to one of a radio frequency identification (RFID) tag or an RFID interrogator using a zero bias switch, wherein the zero bias switch has a first path that couples the RFID tag to the antenna and isolates the RFID tag from the RFID interrogator when the zero bias switch is in an unpowered state.

Abstract: A method and apparatus for delivering content wirelessly to a remote wireless device (103) includes withholding content delivery until a link ready acknowledgment has been received. A communication device (201), such as a mobile telephone, includes a client capable of delivering content. For example, an audio client (101) is configured to deliver audio content, which may include music or voice, to a user. When a wireless communication link (210) with a remote wireless device (103), such as a hand-free speakerphone device, is desired, the client requests the wireless communication link from an audio manager (102). The client then withholds content delivery until the audio manager (102) establishes the wireless communication link (210) and delivers a link ready acknowledgement. In so doing, the method and apparatus prevent lost audio.

Abstract: A method (1400) of enabling automatic frequency control (AFC) concurrent with time alignment of information in a communication device includes a first step (1402) of providing a data stream to an AFC. A second step (1404) includes applying multiple frequency offsets to the data stream. The offsets are separated from each other by about ±2&pgr;/2m radians with m being the number of bits per symbol in the modulation system. A third step (1406) includes correlating each frequency offset signal with a predetermined symbol sequence until correlation is found. A fourth step (1408) includes coupling the correct data stream of the branch with the found correlation to an AFC logic circuit indicating AFC lock. A fifth step (1410) includes simultaneously supplying the correct data stream to the communication device along with the fourth step (1408) such that time alignment can take place concurrently with AFC in the communication device.

Abstract: A mobile station (102) has electrical circuitry (301) that operates to reduce power consumption. A synthesizer (318) is tuned so that a receiver (314) receives a home radio frequency (RF) signal during a receive slot (504) of a PCH subframe (209). A controller (310) detects if an upcoming subframe has an uplink requirement and if data from the home RF signal indicates that an idle condition exists. If the upcoming subframe does not have an uplink requirement, synthesizer (318) is tuned during a long idle slot (506) of PCH subframe (209) to measure signal strengths of two peripheral RF signals. If the idle condition does exist, electrical circuitry (301) is placed into a low power mode throughout a transmit slot (508), a receive slot (512), a long idle slot (514), and a transmit slot (516).

Abstract: A frequency control circuit, and associated method, for a receiver operative to receive a TDMA signal transmitted by a transmitter in a TDMA communication system. A first frequency detector generates a first frequency control signal. A second frequency detector, comprised of a portion of a decision-directed demodulator, generates a second frequency control signal. The first frequency control signal is utilized to effectuate frequency control when a signal is continuously received by the receiver, such as times immediately subsequent to initial powering of the receiver as the receiver becomes synchronized with the TDMA signal transmitted thereto. Onces a receiver becomes synchronized to the transmitter, the receiver need only be powered during intermittent time periods when the TDMA signal is transmitted to the receiver.