Balasubramaniyan
Arul Balasubramaniyan, Richardson, TX US
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20140241462 | CIRCUIT AND METHOD FOR ENVELOPE TRACKING AND ENVELOPE-TRACKING TRANSMITTER FOR RADIO-FREQUENCY TRANSMISSION - A method of envelope tracking and an envelope tracking (ET) circuit. One embodiment of the (ET) circuit is for radio frequency (RF) transmission and includes: (1) an amplitude calculator configured to generate an amplitude signal that approximates the amplitude of an input signal, (2) a peak detector configured to take samples of the amplitude signal within a time window and produce an envelope signal that represents an amplitude peak among the samples, and (3) a signal conditioner configured to condition the envelope signal for driving a power supply input stage of a power amplifier operable to amplify and transmit an RF signal based on the input signal. | 08-28-2014 |
Arul Balasubramaniyan, Plano, TX US
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20120256613 | LOW SUPPLY REGULATOR HAVING A HIGH POWER SUPPLY REJECTION RATIO - A power supply noise rejection circuit for functional circuits, such as a voltage controlled oscillator (VCO). The power supply noise rejection circuit includes an isolation transistor connected to a voltage supply for providing an output current and voltage substantially free of noise across the full frequency range. A current source, a diode connected reference transistor with resistance means connected between its gate and drain terminals, and a dummy circuit serially connected between the voltage supply and ground generate a bias voltage that is applied to the gate of the isolation transistor. The dummy circuit mimics the DC characteristics of the functional circuit such that the output current tracks with process and temperature variations. The isolation transistor and the reference transistor can have negative threshold voltages, and the circuit can include bleed means for drawing current from the gate of the reference transistor and isolation transistor. | 10-11-2012 |
Jagadeesh Balasubramaniyan, Chennai IN
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20150100473 | CREDIT THROUGH UNSTRUCTURED SUPPLEMENTARY SERVICE DATA - Methods and systems for providing credit through USSD are described. A user dials a short USSD code onto his or her mobile device, and is prompted to enter an authentication code to confirm his or her identity. Once authenticated, the user is presented with a USSD menu that includes an option to pay with credit. The user chooses this option, and is prompted to enter an amount for the credit. The service provider checks the credit score of the user, and approves or denies credit based on the score. When the credit score is acceptable, the user is asked to enter the merchant ID for the store and to confirm checkout. The amount for the purchase is then transferred to the merchant by the service provider. | 04-09-2015 |
Nagamanivel Balasubramaniyan, Sunnyvale, CA US
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20090157919 | READ CONTROL IN A COMPUTER I/O INTERCONNECT - In one embodiment, a method for controlling reads in a computer input/output (I/O) interconnect is provided. A read request is received over the computer I/O interconnect from a first device, the request requesting data of a first size. Then it is determined whether fulfilling the read request would cause the total size of a completion queue to exceed a first predefined threshold. If fulfilling the read request would cause the total size of the completion queue to exceed the first predefined threshold, then the read request is temporarily restricted from being forwarded upstream | 06-18-2009 |
20110125947 | READ CONTROL IN A COMPUTER I/O INTERCONNECT - In one embodiment, a method for controlling reads in a computer input/output (I/O) interconnect is provided. A read request is received over the computer I/O interconnect from a first device, the request requesting data of a first size. Then it is determined whether fulfilling the read request would cause the total size of a completion queue to exceed a first predefined threshold. If fulfilling the read request would cause the total size of the completion queue to exceed the first predefined threshold, then the read request is temporarily restricted from being forwarded upstream | 05-26-2011 |
Saravanan Balasubramaniyan, Los Gatos, CA US
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20130150012 | MECHANISMS TO IMPROVE MOBILE DEVICE ROAMING IN WIRELESS NETWORKS - A mobile wireless device adapts roaming parameters used to determine searching for and switching among access points. The roaming parameters are adjusted based on a wireless network characterization for access points that includes a detected wireless network type. In an embodiment, the wireless network type is characterized by a service set identifier and a number of unique basic service set identifiers associated with the service set identifier per radio frequency band. Roaming parameters include a scan threshold, a roam threshold and a time interval between successive scans. | 06-13-2013 |
20130331098 | Automatically Determining and Alerting Users to Available Wireless Networks - Automatically determining and alerting a user to available wireless networks. Initially, the method may automatically determine that one or more wireless networks are available to a wireless device at a location. The method may determine if the wireless device has been present at the first location for more than a threshold amount of time, e.g., based on periodic determination of the available wireless networks to the wireless device. Based on the wireless device being present at the first location for more than the threshold amount of time, an alert may be automatically displayed to the user on a display of the wireless device. The alert may indicate at least one wireless network of the one or more wireless networks at the first location. The wireless device may connect to wireless network indicated by the alert in response to user input. | 12-12-2013 |
20140362726 | METHOD AND APPARATUS FOR COOPERATIVE CHANNEL SWITCHING - An apparatus and methods are provided for opportunistically conducting data communications on multiple wireless channels. In these methods, a device is engaged in data communications with a second device and receives a conflicting communication demand requiring action on one or more channels other than the data-communication channel (e.g., to conduct a channel scan, to issue or receive a beacon). The device arranges a schedule of channel switches to satisfy the communication demand and advises the second device of the schedule, and may explicitly invite the second device to implement the schedule. To the extent the second device does so, the data communications continue on the other channels. The devices may be participating in a synchronized peer-to-peer communication environment that requires their attendance on the data-communication channel and that is not associated with the other channels. | 12-11-2014 |
Saravanan Balasubramaniyan, Cupertino, CA US
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20140269404 | DETERMINING THE RELIABILITY OF COMMUNICATIONS BETWEEN A PORTABLE ELECTRONIC DEVICE AND AN ACCESS POINT - A method and system are described for determining the reliability of the communications between a portable electronic device and an access point (AP) before associating with the AP. In the described embodiments, a first probe request frame is transmitted to the AP at a first data rate, and a first probe response frame is received from the AP, wherein the first probe response frame is responsive to the first probe request frame. Then, a second probe request frame is transmitted to the AP at a second data rate, wherein the first data rate is lower than the second data rate. Then, the portable electronic device determines if a second probe response frame is received from the AP, wherein the second probe response frame is responsive to the second probe request frame. The portable electronic device then determines the reliability of the communications between the portable electronic device and the AP. | 09-18-2014 |
Sethuraman Balasubramaniyan, Bangalore IN
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20140061539 | GASIFICATION SYSTEM AND METHOD - A system includes a gasifier. The gasifier includes a chamber, a first nozzle, and a second nozzle. The first nozzle is configured to output a first fuel and a first oxidant to create a mixture that combusts in a combustion-reduction zone of the chamber. The second nozzle is configured to output a reduction promoter into the combustion-reduction zone to reduce combustion products in the combustion-reduction zone of the chamber. | 03-06-2014 |
Vijay Balasubramaniyan, Atlanta, GA US
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20130109358 | SYSTEMS AND METHODS FOR DETECTING CALL PROVENANCE FROM CALL AUDIO | 05-02-2013 |
Vijay A. Balasubramaniyan, Atlanta, GA US
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20080256256 | Method and Apparatus for Autonomically Regulating Ratio of Stateful to Stateless Transaction Processing for Increasing Scalability in a Network of SIP Servers - Systems and methods are provided for maximizing call throughput in a server network by optimizing the balance of stateful to stateless handling or transactions at each server within the network. The identification of transaction messages to be handled statelessly or statefully is made at each proxy server within the network in order to maximize the total throughput at that proxy server within prescribed processor utilization limits. In general, each transaction is handled statefully by at least one server within the network. Reports on the stateful handling of messages and the resource consumption at various proxies are communicated throughout the network to be used in identifying the ratio of messages to be forwarded statefully to messages to be forwarded statelessly at any given proxy. | 10-16-2008 |
Viswanath Balasubramaniyan, Bangalore IN
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20110099971 | SYSTEM AND METHOD FOR IMPROVING PERFORMANCE OF AN IGCC POWER PLANT - In certain embodiments, a system includes a gas cleaner. The gas cleaner includes a solvent to clean a syngas. The system also includes a heat exchanger configured to heat a liquid to generate a vapor. The system further includes a vapor absorption refrigeration (VAR) cycle coupled to the gas cleaner and the heat exchanger. The VAR cycle is configured to cool the solvent. In addition, the vapor drives the VAR cycle. | 05-05-2011 |