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Class 379/386 - Signal receiver (e.g., tone decoder)


Subclass of Class 379 - Telephonic communications
Definition: Subejct matter for receiving the supervisory or control
No. of patents: 440
Last issue date: 05/01/2012


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NumberTitleIssue Date
8170198Tone signal detector, tone signal detection method, and computer readable recording medium
Upon selection of the frequency of a tone signal, a local oscillator generates a frequency signal having a shift frequency corresponding to the frequency of this tone signal. A frequency shifter generates a frequency-converted signal by shifting a frequency of the t...
05/01/2012
7873158Polled geofencing and distinguished ring-back
The apparatus may have: a telecommunication network having a tracking calling terminal and a tracked called terminal; a polled geofencing system associated with at least one predetermined area having a predetermined boundary, the tracked called terminal having a loc...
01/18/2011
7856096Erasure of DTMF signal transmitted as speech data
A DTMF signal processing apparatus of the present invention comprises a data divider unit, a DTMF signal component analyzer unit, a weighting processing unit, a buffer, a DTMF signal erasure determination unit, and a DTMF signal erasure processing unit. The data div...
12/21/2010
7844048Selective tone event detector and method therefor
In one embodiment, a tone event detector first determines whether the presence of a tone is indicated on the input signal, and then, based on this determination, selectively determines whether a tone has been detected on the input signal. For example, in one embodim...
11/30/2010
7751554Sound information providing system
A sound information providing system, which can eliminate inappropriate sound information, is provided. The sound information providing system includes a receiving unit that receives a phone number for identifying a cellular phone of the destination side and a phone...
07/06/2010
7602902Method and apparatus for decoding DTMF tones
A method for decoding a DTMF tone which includes collecting the width of serial signals by measuring the time interval between zero-crossing points within a predetermined time; counting within the predetermined time the number of signal zero-crossing points; perform...
10/13/2009
7529363Tone detector and method therefor
A tone detector able to detect multicomponent tones for various tone formats is disclosed. An input signal is received and frequency and amplitude components, if any, of each sample of the incoming signal are estimated. In estimating the components, a current digit ...
05/05/2009
7388954Method and apparatus for tone indication
A communication system having an echo canceller is disclosed. One embodiment of the echo canceller includes an adaptive filter used to provide an estimate of reflected echo which is removed from the send signal. The echo canceller may also include a near-end talker ...
06/17/2008
7369546Method and apparatus for fast DTMF detection
A fast DTMF detector for filtering a packetized linear voice signal to identify whether the voice signal contains a DTMF tone. The detector includes a plurality of parallel notch filters for knocking down DTMF tones. The energies of the filtered signals output by th...
05/06/2008
7359528Monitoring of video or audio based on in-band and out-of-band data
The presently claimed invention relates generally to monitoring and/or filtering video or audio data. In one implementation a method is provided including: obtaining data representing video or audio; analyzing the data representing video or audio for an in-band sign...
04/15/2008
7349532Picture and video message center system
A message originator sends a picture or video message to a message center along with caller identifying information. The message is stored in a memory and transmitted to a wireless picture phone, PDA or portable computing device, or stored at the message center in a...
03/25/2008
7336777Method and apparatus for managing presenting and changing ring-back sounds in subscriber-based ring-back sound service
Disclosed herein is a method and apparatus for managing ring-back sounds in a subscriber-based ring-back sound service. The method includes the first step of storing common ring-back sounds and reporting details of use of the common ring-back sounds, the second step...
02/26/2008
7315584Coherent receiver
A coherent receiver receives a set of signals which are spaced in phase, or phase and polarization, and a reference signal. The receiver processes the set of signals to determine which of the set of signals has a predetermined association (e.g. closest in phase) wit...
01/01/2008
7310416Method and apparatus for improved personal communication devices and systems
A system for adding or updating contact data in a wireless communication device, cellular telephone, pager or personal digital assistant (PDA) is shown. Contact data associated with actual or potential communicants may be entered into a database in the wireless comm...
12/18/2007
7310412Personalized recorded message via message delivery system
Message delivery system primarily for answering machines which provides a realistic sounding recorded message containing an individualized personal greeting which can be delivered onto one or more answering machines. This automated method of delivering a recorded pe...
12/18/2007
7305076Method and apparatus for improved paging receiver and system
A wireless information communication system and method, such as a paging network, that provides caller identification information transmitted from the public switched telephone network to a pager, PDA (Personal Digital Assistant), a portable computing device, or per...
12/04/2007
7302004Content-based characterization of video frame sequences
A system and process for video characterization that facilitates video classification and retrieval, as well as motion detection, applications. This involves characterizing a video sequence with a gray scale image having pixel levels that reflect the intensity of mo...
11/27/2007
7302070Oscillation detection
The invention relates to oscillation detection and, more particularly, concerns a method and apparatus for identifying oscillation in a signal due to feedback, permitting appropriate action to be taken to suppress the oscillation. The method involves using an FFT de...
11/27/2007
7286658Method and apparatus for improved personal communication devices and systems
A method for use in a wireless communication device, cellular telephone, pager or personal digital assistant (PDA) is shown in which Caller ID data originating from the public switched telephone network or other caller identifying data is received in a paging signal...
10/23/2007
7278043System, method, and apparatus for overload detection in real-time data processing applications
A method for overload detection according to one embodiment of the invention includes a control process and a data process. In response to a timing signal, the control process sets a state of a timing indicator. Upon execution of a time-constrained operation, the da...
10/02/2007
7277537Tone, modulated tone, and saturated tone detection in a voice activity detection device
In a voice activity detection (VAD) device a method for defining tone signals comprises defining a threshold for zero amplitude change, calculating a zero crossing rate of a signal, extracting a set of parameters from a plurality of duration periods of the signal, d...
10/02/2007
7272136Dual tone multi frequency signal detection
A signalling tone detector for use in a communications network for the detection of dual frequency multi-tone (DTMF) pairs of signal tones in a time division multiplex (TDM) signal. The detector comprises first and second arrays of adaptive notch filters correspondi...
09/18/2007
7272233Acoustic shock prevention
Acoustic shock is reduced by attenuating an input signal based on tones detected through frequency domain analysis. The spectrum of the input signal is obtained. A relative energy signal includes a plurality of relative energy elements, each representing the relativ...
09/18/2007
7266186Method and apparatus for improved paging receiver and system
Contact data in a phonebook database for a personal communication device are remotely updateable from, or transferable between, a computer system using a wireless radio frequency connection. New contact data, and changes or updates to existing contact data, are inpu...
09/04/2007
7257210Picture phone with caller id
Pictures are transmitted to a wireless picture phone with caller ID from a message originator and used by the message recipient to identify who is to sending the picture. In one embodiment the pictures are sent to a message center along with the caller ID of the mes...
08/14/2007
7254223Method and apparatus for improved personal communication devices and systems
Contact data in a database for a wireless personal communication device are remotely updatable from, or transferable between, a computer system using a radio frequency connection. New contact data, and changes or updates to existing contact data, are input at the co...
08/07/2007
7254495System and method for detecting a device requiring power
A system and technique for detecting a device that requires power is implemented with a power detection station. The power detection system includes a detector having an output and a return which are coupled together by the device when the device requires power. The...
08/07/2007
7251318Method and apparatus for improved personal communication devices and systems
An apparatus and method provide a database in a pager that contains menus that may be displayed on a pager display. A paging service sends a page including an identification, retrieves a menu from the pager database and displays the menu. The pager responds to the p...
07/31/2007
7251577Realtime power mask trigger
A realtime power mask trigger generator for an instrument that acquires data in response to a trigger signal integrates power amplitudes over a defined bandwidth within a frequency spectrum for an input signal to produce an average signal power, and compares the ave...
07/31/2007
7245637Methods and apparatus for suppressing signaling tones in telephony signal
In some embodiments, a method includes detecting a tone in each data frame of a sequence of telephony signal data frames. A first data frame of the sequence of telephony signal data frames may be transmitted immediately after detecting the tone therein. Transmission...
07/17/2007
7242757Method for providing a subscriber-based ringback tone sound
The present invention relates to a method for providing an arbitrary sound chosen by a called subscriber for a caller instead of a conventional RBT (RingBack Tone). The present method comprises: the first step, conducted by an HLR (Home Location Register), of furnis...
07/10/2007
7242326Sample rate conversion combined with filter
Digital filtering and sample rate conversion blocks are combined in order to reduce hardware and/or computational complexity. A novel filter design is used to perform sample rate conversion. The filter may be combined with another digital filter. Two embodiment may ...
07/10/2007
7242756Method for providing subscriber-based ringback tone in flexible paging mode
The present invention provides a caller with an arbitrary sound chosen by a called subscriber instead of a conventional RBT (RingBack Tone) without fails even in a flexible paging mode. In the present method: both exchangers check individually whether first informat...
07/10/2007
7236585Apparatus and method for noise immunity during signal detection
A noise calculation mechanism is incorporated into a cadence tone detector which upon a miss in either a energy or silence interval allows for retention of those periods corresponding to noise and augments the appropriate energy and silence interval. ...
06/26/2007
7236581Method for providing subscriber-based ringback tone with no progress tone
The present invention relates to method for providing a calling subscriber with an arbitrary sound chosen by a called subscriber instead of a common ringback tone (RBT) with no progress tone. In this present invention, if a call is generated, a terminating exchanger...
06/26/2007
7227943Tone detector
The present invention provides a tone detector that is capable of performing accurate tone signal detection in a short period of time. Specifically, the tone detector according to the present invention includes: a control unit that measures the tone signals using a ...
06/05/2007
7221950Auto sensing home base station for mobile telephone with remote answering capabilities
The present invention discloses in one embodiment a mobile telephone capable of communicating with a home base station through radio signals. The mobile telephone registers with a home base station before beginning to communicate with the home base station. The home...
05/22/2007
7203254Method and system for synchronizing in a frequency shift keying receiver
The invention provides a method and apparatus for achieving timing synchronization during signal acquisition and for achieving frequency synchronization in a digital communication receiver after signal acquisition. The invention operates by performing multiple corre...
04/10/2007
7197461System and method for voice-enabled input for use in the creation and automatic deployment of personalized, dynamic, and interactive voice services
The delivery of voice serve messages communicating financial, personal or other news telecasts may be customized according to the identity of the recipient and controlled by voice commands. A voice service bureau may generate voice messages for individual subscriber...
03/27/2007
7197062Method and apparatus to detect and decode information
Briefly, in accordance with an embodiment of the invention, a method and apparatus to detect and decode information is provided, wherein the method includes sampling a radio frequency (RF) impulse signal to generate a sample signal and storing the sample signal for ...
03/27/2007
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