Abstract: An embodiment method includes receiving, by a notification service running on a processor, a notification from a first component of a push-to-talk (PTT) platform. The notification is for transmission to a PTT client. The method further includes determining, by the notification service, an access transport type used by the PTT client to communicate with the PTT platform, and selecting, by the notification service, a second component to transmit the notification to the PTT client. Selecting the second component is in accordance with the access transport type used by the PTT client. The method further includes transmitting, by the notification service, the notification to the second component.

Abstract: Embodiments include systems, methods, and apparatuses for reading a data signal from a memory, such as a dynamic random access memory (DRAM). In one embodiment, a memory receiver may include a differential amplifier to receive a data signal from the memory and pass a differential output signal based on a voltage difference between the data signal and a reference voltage. The data signal may have a first direct current (DC) average voltage level, and the differential amplifier may shift the differential output signal to a second DC average voltage level that is substantially constant over a range of values of the first DC average voltage level. In another embodiment, a voltage offset compensation (VOC) circuit may apply a compensation voltage to the output signal that is based on an activated rank or an identity of the memory module. Other embodiments may be described and claimed.

Abstract: A digital broadcast receiving device (100) includes: a same broadcast station determination unit (109) that determines that a broadcast station broadcasting programs with the same broadcast times as the broadcast times of programs broadcast by a selected broadcast station in a predetermined interval in program schedules included in broadcast station information stored in a broadcast station information storage unit (108) is the same broadcast station as the selected broadcast station, generates same broadcast station information associating the selected broadcast station with the broadcast station determined to be the same broadcast station, and stores the same broadcast station information in the broadcast station information storage unit (108); and a station selection control unit (107) that, when reception deterioration is detected, controls the broadcast receiving unit (112) so as to switch the broadcast station selection over to a same broadcast station as determined by the same broadcast station determi

Abstract: A selector selects an analog audio signal input to one input port from among analog audio signals input to multiple input ports according to an instruction from the user. An analog gain control circuit amplifies the analog audio signal received from the selector, with a corresponding one of the gains set for the respective input ports. An analog gain control circuit is configured to gradually change its gain when the gain is switched. An A/D converter converts an output signal of the analog gain control circuit into a digital audio signal. A first audio signal processing circuit is monolithically integrated on a signal semiconductor substrate.

Abstract: Apparatus and methods are disclosed related to tuning a resonant frequency of an LC circuit. In some implementations, the LC circuit can be embodied in a low noise amplifier (LNA) of a receiver. The receiver can include a component configured to generate an indicator of received signal strength indication (RSSI) of a radio frequency (RF) signal received by the receiver. A control block can adjust the resonant frequency of the LC circuit based at least in part on the indicator of RSSI. As another example, the receiver can include an oscillator, such as a VCO, separate from the LC circuit that can be used to tune the resonant frequency of the LC circuit. These apparatus can compensate for variation in a zero imaginary component of an impedance across the LC circuit.

Abstract: Systems and methods are disclosed which relate to mitigating the detrimental effects of interference to electronic devices from mobile telephones utilizing any form of time-domain multiplexing technology. A wireless transmitter inside the mobile telephone broadcasts a warning transmission which can be received by affected devices. Once the warning transmission is received by an affected device, the device activates a blanking circuit comprising an actuator and a switch or switches. The switches open for the duration of the interference so that the user does not receive undesired output such as: noise through a speaker, noise through a microphone, or other interference with electrical signals.

Abstract: A method and a system for sending a ring setting reminder to one or more mobile devices within a predetermined area are provided. The ring setting reminder may be a reminder signal sent to cell phones and other mobile devices within a movie theater complex or other predetermined area to remind the users of the mobile devices to silence the ringers of the mobile devices before the start of the movie or other event. The identification of the mobile devices may occur at the predetermined area or through a wireless communication network. The wireless communication network may be configured to identify the predetermined area within the wireless communication network, identify one or more of the mobile devices located within the predetermined area, and send the reminder signal to correspond with the start of an event at the predetermined area.

Abstract: A method and a system for sending a ring setting reminder to one or more mobile devices within a predetermined area are provided. The ring setting reminder may be a reminder signal sent to cell phones and other mobile devices within a movie theater complex or other predetermined area to remind the users of the mobile devices to silence the ringers of the mobile devices before the start of the movie or other event. The identification of the mobile devices may occur at the predetermined area or through a wireless communication network. The wireless communication network may be configured to identify the predetermined area within the wireless communication network, identify one or more of the mobile devices located within the predetermined area, and send the reminder signal to correspond with the start of an event at the predetermined area.

Abstract: A broadcast receiver includes a tuner circuit and a demodulator circuit. The tuner circuit tunes a radio frequency (RF) signal to output an intermediate frequency (IF) signal. The demodulator circuit demodulates the IF signal from the tuner circuit and outputs a command signal based on the quality of the IF signal, for changing a take over point (TOP) value, preset in the tuner circuit, at which one amplitude gain control (AGC) stopping and another taking over. A method for regulating a broadcast receiver is also disclosed herein.

Abstract: A method for performing location update in various manners when a mobile station (MS) travels between paging groups in a wireless access system. A method for performing location update of an MS includes steps of transmitting a ranging request message (REG-REQ) including mobility information to a base station, wherein the mobility information represent a mobility of the mobile station; and receiving a ranging response message (RNG-RSP) including paging group information related with new paging group from the base station, wherein the new paging group is assigned based on the mobility information.

Abstract: In an audio muting circuit, after a short delay from a first time at which a first mute signal generation circuit causes a first mute signal to fall from “H” level to “L” level, a second mute signal generation circuit causes a second mute signal to fall from “H” level to “L” level at a second time. A third mute signal generated by combining the first and second mute signals is caused to fall from “H” level to a predetermined level at the first time, and caused to fall from the predetermined level to “L” level at the second time. Thus, at the start of muting, the level of an audio signal is increased in stepwise manner. In this way, noise generated at the start of muting can be reduced.

Abstract: Methods and systems for seamlessly broadcasting data to a user moving among a plurality of broadcast coverage areas. A first signal containing desired data may be received by a receiving device at a user location, wherein the first signal is broadcast from a first transmitting station associated with a first broadcast coverage. Thereafter, the receiving device (e.g., a radio or in-vehicle television) can be automatically instructed to search for and tune to a second transmitting station associated with a second broadcast coverage area broadcasting a second signal containing the desired data if the first signal fades at the user location, thereby permitting the user to seamlessly receive data as the user moves among a plurality of broadcast coverage areas.

Abstract: A method and apparatus are provided which detects distortion in a received FM signal caused by amplitude modulating and phase transition of two combined FM signals. A method corrects and modifies the distortion by detecting a distorted sample, replacing the distorted sample with an appropriate sample, and applying a smoothing process to the sample.

Abstract: A method of masking interruptions in the playback of received radio signals is provided, in which lengthy interruptions are allowed only when modulation of the radio broadcast program currently being received is recognized as speech, and a modulation pause in the received radio signal is detected. This method permits essentially complete masking of lengthy interruptions in playback or making them inaudible, in which these interruptions are necessary, e.g., for analysis/testing for a transmission frequency of transmitted RDS information to be used as an alternative to a transmission frequency currently being received.

Abstract: A system and method of eliminating static while utilizing pre-programmed tuner buttons on a radio is disclosed. The system of the present invention mutes a pre-programmed tuner button frequency when the radio signal for the pre-programmed frequency is below a threshold value. Further the system of the present invention may automatically tune to an alternate frequency when radio signal strength of the pre-programmed tuner button frequency is below a threshold value.

Abstract: A system, apparatus and method for inhibiting the ringer of a cellular telephone within a noise sensitive area includes a transmitter for generating a control signal within the area. A receiver within the cellular telephone generates a mute signal during reception of the control signal which inhibits operation of the telephone ringer circuit while the telephone is in the noise sensitive area. In an alternate embodiment, a transmitter of limited range is placed at each entrance to the noise sensitive area and the ringer circuit is inhibited upon momentarily receiving the control signal entering the area, and activated upon momentarily receiving the control signal exiting the area.

Abstract: Radio receivers which switches the received voice signal according to a supervisory signal used for supervising the condition of the propagation path through which the voice signal is transmitted are known. However, if the reception level of the radio wave received by a conventional radio receiver is low, the level of the supervisory signal becomes lower while the level of the noise accompanying the supervisory signal becomes higher, whereby the noise acts like the supervisory signal so as to provide a voice signal containing a lot of noise to the user of the radio receiver. To solve this problem, the radio receiver according to the present invention compares the level of the supervisory signal and the level of the noise accompanying the supervisory signal, so as to control the outputting of the voice signal according to the comparison result.

Abstract: In accordance with the present invention, a method is disclosed for preventing noise spikes due to abrupt changes of a transmission signal in a cordless telephone. The method is comprised of two sub-methods where a first sub-method for controlling the gain of a transmission signal when a call is initiated, and a second sub-method for controlling the gain of a transmission signal when a call is terminated.

Abstract: A cordless telephone includes a ring detector state machine module to facilitate the answering of a call received at the cordless telephone. A screening state machine module enables three-way connection and aural monitoring of the incoming call on the cordless telephone.

Abstract: A mobile communication receiver generates an audio signal from a radio signal received on a communication channel, detects conditions on the communication channel, mutes the audio signal according to a first rule when the channel conditions are bad, and un-mutes the audio signal according to a second rule when the channel conditions are good. The first rule is more stringent than the second rule; as a result, sporadic muting and choppy muting are avoided.

Abstract: A communication device communicates with a station and includes a receiver which receives speech signal frames from the station. The speech signal frames have speech signals. The communication device further includes a counter and an attenuation circuit. The counter counts the number of bad frames of the received speech signal frames. The attenuation circuit diminishes the amplitude of the speech signals when the count of the counter is higher than one indicating more than one bad frame is received. The station is either connected to a switched network or is a satellite station.

Abstract: An apparatus and method for synchronizing audio and video signals wherein the motion of a picture is detected in case of occurring timing difference between the audio and video signals and subsequently a threshold is adjusted in association with the detected motion of the picture, thereby controlling the mute audio signal.