Vishnu Vardhan
Vishnu Vardhan Bala Krishnan, San Diego, CA US
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20140254408 | RATE CONTROL ASSOCIATED WITH FRAME AGGREGATION - MAC layer frame aggregation and block acknowledgement are used in some WLAN technologies to improve efficiency of a communications channel by reducing PHY layer overhead. A frame aggregation window size defines how many MAC protocol data units (MPDUs) are included in an aggregated MPDU (AMPDU) frame. The frame aggregation window for a subsequent AMPDU frame is typically dependent upon the characteristics of the block acknowledgement—such as the number of non-acknowledged (NAK) MPDUs or the position of a hole in the previous AMPDU frame. A small frame aggregation window size may impact throughput especially at higher transmission rates. In this disclosure a transmission rate may be determined based, at least in part, on a projected frame aggregation window size resulting from a block acknowledgement. The frame aggregation feedback (e.g. block acknowledgement) may be used by a rate control module to determine a transmission rate that optimizes frame aggregation efficiency. | 09-11-2014 |
20140254424 | METHOD AND APPARATUS FOR OPTIMIZING RATE CONTROL BASED ON PACKET AGGREGATION CONSIDERATIONS - Various aspects of the disclosure described herein provide for optimizing rate control during a selection of a communications profile from a set of communications profiles by taking into account effective frame aggregation size as a function of packet error rate (PER). An expected throughput may also be determined for each communications profile and updated after each transmission so that a communications profile having the highest expected throughput may be chosen for a particular frame transmission. | 09-11-2014 |
Vishnu Vardhan Makkapati, Ongole IN
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20150134348 | METHOD AND SYSTEM FOR SELECTING THE FREQUENCY OF ARTERIAL BLOOD GAS TESTING FOR NEONATES - A system and method for receiving previous arterial blood gas (“ABG”) test results for a patient, determining an initial time for a next ABG test for the patient based on the previous ABG test results, receiving monitoring data for the patient and determining a modified time for a next ABG test based on the initial time for the next ABG test and the patient monitoring data. | 05-14-2015 |
20150217132 | SYSTEM AND METHOD TO SELECTIVELY ILLUMINATE AN INFANT DURING PHOTOTHERAPY - A system and method to selectively illuminate (part of) an infant during phototherapy uses an array of collimators and a set of light sources to control impingement of electromagnetic radiation on the infant. | 08-06-2015 |
Vishnu Vardhan Pullu, Eindhoven NL
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20150173835 | LIOB BASED SKIN TREATMENT SYSTEM - A skin treatment system comprising a light based skin treatment device ( | 06-25-2015 |
Vishnu Vardhan Pully, Eindhoven NL
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20150265256 | SYSTEM WITH PHOTONIC BIOPSY DEVICE FOR OBTAINING PATHOLOGICAL INFORMATION - A biopsy device is provided comprising a tubular member, a hollow shaft and an elongated fiber body. The hollow shaft may have a distal end and a shaft, wherein a laterally (sidewardly) facing notch is formed in the distal portion of the shaft. The elongated fiber body may include at least one optical fiber, preferably at least two optical fibers, with a distal end. The tubular member is movable relative to the shaft, between a first position in which the notch is covered by the tubular member, and a second position in which the notch is not covered by the tubular member. The fiber body is movable within the shaft, between a first position in which the distal end of the optical fiber is located at the distal end of the shaft with the elongated fiber body extending through the notch, and a second position in which the distal end of the at least one optical fiber is located proximally to the notch. | 09-24-2015 |
Vishnu Vardhan Vemulapalli, London GB
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20090315973 | Processing video communication data - The present invention provides a method of processing video data in a video communication system, and a corresponding program and apparatus. The method comprises: receiving first video data at a first terminal from a second terminal; generating second video data at the first terminal for transmission to the second terminal; selecting the size of a first video area for displaying the first data within a display area; and scaling the first video data to the selected size of the first area and displaying it therein. The method further comprises: determining a second video area for displaying the second data within the display area, the determination of the second area comprising at least determining a location of the second area relative to the first area in dependence on the size of the first area; and scaling the second video data to the second video area and displaying it therein. | 12-24-2009 |