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Tsang, Fan


Primary examiner statistics: 1697 patents; average approval time: 1696 days
Assistant examiner statistics: 126 patents; average approval time: 830 days

Patents as Primary Examiner

1                      
NumberTitleIssue Date
8189765Multichannel echo canceller
A multichannel echo canceller according to the present invention includes an echo cancellation section which receives loudspeaker input signals sp1, sp2 including a second acoustic signal to be respectively inputted to a plurality of loudspeakers 10...
05/29/2012
8184832Electrostatic loudspeaker capable of dispersing sound both horizontally and vertically
An acoustic transducer, specifically an electrostatic loudspeaker (ESL) providing curvature in two directions for improved dispersion of sound waves. The compound curvature also provides a virtual focus of the propagated sound waves for accurate reproduction of musi...
05/22/2012
8180075Arrangement for variable bass reflex cavities
A modified housing in a portable product (400, 500, 700, or 800) includes a housing detail (405, 506, 706 or 710 or 806) forming at least a portion of a loud speaker back cavity having a pipe inner diameter for a resonant pipe (...
05/15/2012
8175233Distributed cache system
An integrated messaging system for performing various types of messaging across different types of networks, including integrated user interfaces and administrator interfaces. Embodiments include a communication server that couples among networks of different types,...
05/08/2012
8170199Echo canceller
In a speech communication device capable of bidirectional communication, a clock deviation between the speaker side (the receiving side) and the microphone side (the transmitting side) is detected, and based on the above deviation, either a first frequency signal (s...
05/01/2012
8170189Cross-platform message notification
Systems, methods, and machine-readable media are disclosed to provide notification of receipt of a communication across multiple platforms of potential diverse types. Cross-platform message notification can comprise receiving a request to initiate a communication fr...
05/01/2012
8164615Personalized conference bridge
The present invention allows a user to customize her personal conference bridge such that conference participants who connect to the bridge are provided conference information selected by the user. In particular, after each conference participant gains access to the...
04/24/2012
8160240Echo cancellation balance using noise generator and average power detection
A communication system includes transmit and receive paths, a balancing filter, a noise generator, a detector, and an interface. The transmit path is operable to generate data for communication on a communication network. The receive path is operable to receive data...
04/17/2012
8155303System and method for cancelling echo
A system and a method for canceling an echo is disclosed. In accordance with the system and the method, a plurality of independently and variably delayed adaptive algorithm blocks are selectively applied to a delayed feedback signal to generate a plurality of echo c...
04/10/2012
8149697System, method, and computer program product for discovering services in a network device
According to one embodiment, a method for discovering services within a social network is provided. The method includes receiving a request from a requesting node for one or more services provided by an originating node, each service comprising an access ticket for ...
04/03/2012
8150028Circuit device with serial bus isolation
In a particular embodiment, a circuit device includes a first circuit having a first plurality of serial terminals including a first data receive terminal and a first data transmit terminal. The first plurality of serial terminals is communicatively coupled to a par...
04/03/2012
8150025Flexible ring-tone service
A subscriber associates a ring-tone media selection based on a media genre, author, or title to a calling number. When an incoming call is detected, a particular ring-tone media selection, based on the subscriber's association, may be streamed from a central server ...
04/03/2012
8150007Fully redundant call recording
A system provides redundant telephone call processing. A gateway receives a call and identifies a first server as having primary responsibility for servicing the call and a second server as having secondary responsibility for servicing the call. The gateway communic...
04/03/2012
8144863Method and apparatus for echo cancellation
A technique of echo cancellation in a communication system. A method and/or apparatus of echo cancellation that may be suitable for performing echo cancellation under single talk and double talk conditions. A method and/or apparatus of echo cancellation that may sig...
03/27/2012
8144861Communication circuitry, devices and methods
A method of signal communication includes receiving a selection signal, and selecting a selected frequency range used for a multi-carrier signal communication from a set of predetermined frequency ranges for signal communication depending on the selection signal. Th...
03/27/2012
8144853Methods, systems, and devices for providing contact information
Certain exemplary embodiments comprise a method, comprising storing, within a telecommunications network, contact information for each of a plurality of contacts, the contact information for at least one of the plurality of contacts comprising a telephone availabili...
03/27/2012
8139729Systems and methods for handling calls associated with an interactive voice response application
A method for processing a call is provided. The method includes receiving an inbound call leg via a network device. The inbound call leg is processed using an interactive voice response (IVR) device, and an outbound call leg is generated based on processing the inbo...
03/20/2012
8139728Method and apparatus for telephonically accessing and navigating the internet
A method for accessing and browsing the internet through the use of a telephone and the associated DTMF signals is disclosed. The preferred embodiment provides a system that converts the information content of a web page from text to speech (voice signals), signals ...
03/20/2012
8139738Telephone to computational device association
The present invention allows for dynamic association of a computational device, such as a personal computer or personal digital assistant, with a telephone terminal. A computer-telephone adaptor or like function implemented in a telephony switch or other telephony d...
03/20/2012
8139759Line state detecting apparatus and transmitting apparatus and receiving apparatus of balanced transmission system
A line state detecting apparatus provided in a balanced transmission system includes, in transmission lines comprising a pair of conductors W1, W2 connected to a transmitting portion 13, current transformers T11, T12 primary sides ...
03/20/2012
8139724Method and system for incorporating audio clips during a voice call
A method and a system for incorporating audio clips during a voice call between a calling subscriber A and at least one called subscriber B is provided. At least one of the subscribers A or B incorporates a desired audio clip into the voice call by a press of a butt...
03/20/2012
8139761Network interface device, apparatus, and methods
A line module includes a plurality of pivoting insulation displacement connector holders, an insulation connector (IDC) positionable in at least one holder when the holder is in a connected position, and a gel-less jack in electrical communication with at least one ...
03/20/2012
8135148Automatic gain control for mobile microphone
An automatic gain control unit controls the gain applied to an input signal produced by a microphone subject to ambient noise. The automatic gain control circuit continually monitors the signal level of said input signal. A first gain control circuit decreases the g...
03/13/2012
8135153Computerized automatic wax guard design modeling system and method for hearing instruments
A method and appertaining system provide for automatically adding a wax guard to a hearing aid shell impression. The location of a canal, tip of the canal, and central line of the impression are automatically identified in a digital 3D representation of a hearing ai...
03/13/2012
8135145Multi-level output signal converter
The present invention discloses a multi-level output signal converter, which is connected to an audio amplifier. The audio amplifier comprises a comparing/measuring device, an encoder and an output unit. The multi-level output signal converter comprises a timing pro...
03/13/2012
8130941Echo canceler
An echo canceler 10 generates an echo elimination signal by filtering through adaptive filters 101 and 102 reference signals input from sound sources causing echoes. It includes a sound source number detecting unit 103 for detecting the n...
03/06/2012
8126126Method for providing custom ring-back tones
A method is provided for providing customized ring-back tones to callers on a wireline network such as a public switched telephone network having an advanced intelligent network or a VoIP network. When a call request is received from a calling party to connect to a ...
02/28/2012
8121276Multicast call processing unit for telecommunication devices
A multicast call processing unit receives a request from a requester, determines if the request is associated with a multicast function, identifies a plurality of destinations defined by the multicast function and establishes communication link between the requester...
02/21/2012
8116307Packet structure for mirrored traffic flow
Network traffic associated with a user is lawfully intercepted by mirroring data packets flowing to and from the user for which interception has been designated. A unique packet structure enables analysis of mirrored data packets of any network type. In one implemen...
02/14/2012
8107610Callback processing of interactive voice response requests
Embodiments of the present disclosure provide methods and devices for processing a call to a call distribution point. In this regard, one embodiment of such a method, among others, can be broadly summarized by the following steps: receiving a request from a caller t...
01/31/2012
8107614Enhanced colorful ring-back tone by mixing content streams in real time
Methods and systems for enhanced Colorful Ring-Back Tone (eCRBT) services by mixing multiple digital content streams in real time are provided, including audio, video, data, text-based message, and hypermedia object streams. One or more properties of the content str...
01/31/2012
8102837Network coding approach to rapid information dissemination
A method, apparatus and computer program product for providing rapid information dissemination using network coding is presented. A coded message including a payload and a code vector, is transmitted from a first node of the network to a second node of the network. ...
01/24/2012
8103011Signal detection using multiple detectors
Signal detectors are described herein. By way of example, a system for detecting signals can include a microphone signal detector, a loudspeaker signal detector, a signal discriminator and a decision component. When the microphone signal detector detects the presenc...
01/24/2012
8098812Method of controlling an adaptation of a filter
The invention concerns a method of controlling an adaptation of a filter, and a controller and a computer program product to execute this method. The filter is an adaptive finite impulse response (=FIR) filter for modelling an echo path impulse response for echo can...
01/17/2012
8094787Method and system for utilizing information for efficient recording solutions in a complex multi-media recording environment
System and method for recording telephone calls comprising receiving computer telephony integration fields from first and second sources, identifying which of the CTI fields are physical CTI fields to be used for locating audio to be recorded, identifying which of t...
01/10/2012
8094800Call treatment based on user association with one or more user groups
A method is described for call treatment based on user association with one or more user groups. The method includes receiving a phone call from a call source that is directed to a call recipient, identifying a user group associated with the call recipient, and dete...
01/10/2012
8094806Input devices and their use
A touch-sensitive input device has an exposed, continuous surface defining a planar area, and a grid of sense elements coextensive with the area of the exposed surface and responsive to engagement of the exposed surface by an operator to establish a position of said...
01/10/2012
8090093Echo canceller
An echo canceller which can respond to a sudden change in echo characteristics in real time and does not require an alteration outside the echo canceller, includes a smoothed sending-speech signal calculation means for calculating a smoothed sending-speech signal fr...
01/03/2012
8090081Maintaining a call log
One embodiment of such a method for maintaining a call log can be broadly summarized by the following: receiving an incoming call on a telephone device; obtaining call information about the incoming call via the telephone device; updating a call log with the call in...
01/03/2012
8090341Integrated services user part (ISUP) /session initiation protocol (SIP) gateway for unlicensed mobile access (UMA) emergency services call flow
An ISUP/SIP gateway is implemented to encapsulate SS7 location requests from a switched telephone network into an Internet protocol SIP message including one or more location objects. The ISUP/SIP gateway is implemented between a mobile switching center (MSC)...
01/03/2012
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