Patents Assigned to Sasken Communication Technologies Limited
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Patent number: 9350994Abstract: The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails.Type: GrantFiled: April 15, 2013Date of Patent: May 24, 2016Assignee: Sasken Communication Technologies LimitedInventors: Sandip Bhaumik, Murali Manohor, Kummini Neelakandhan Manoj, Prakash Murigeppa Harapanahalli
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Patent number: 8756067Abstract: The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio signal. This is accomplished by including more accurate attack detection and a computationally efficient quantization technique. The improved audio coder converts the input audio signal to a digital audio signal. The audio coder then divides the digital audio signal into larger frames having a long-block frame length and partitions each of the frames into multiple short-blocks. The audio coder then computes short-block audio signal characteristics for each of the partitioned short-blocks based on changes in the input audio signal.Type: GrantFiled: March 21, 2013Date of Patent: June 17, 2014Assignee: Sasken Communication Technologies LimitedInventor: Bishwarup Mondal
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Publication number: 20130238344Abstract: The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio signal. This is accomplished by including more accurate attack detection and a computationally efficient quantization technique. The improved audio coder converts the input audio signal to a digital audio signal. The audio coder then divides the digital audio signal into larger frames having a long-block frame length and partitions each of the frames into multiple short-blocks. The audio coder then computes short-block audio signal characteristics for each of the partitioned short-blocks based on changes in the input audio signal.Type: ApplicationFiled: March 21, 2013Publication date: September 12, 2013Applicant: Sasken Communication Technologies LimitedInventors: K. P. P. Kalyan Chakravarthy, Navaneetha K. Ruthramoorthy, Pushkar P. Patwardhan, Bishwarup Mondal
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Publication number: 20130231939Abstract: The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio signal. This is accomplished by including more accurate attack detection and a computationally efficient quantization technique. The improved audio coder converts the input audio signal to a digital audio signal. The audio coder then divides the digital audio signal into larger frames having a long-block frame length and partitions each of the frames into multiple short-blocks. The audio coder then computes short-block audio signal characteristics for each of the partitioned short-blocks based on changes in the input audio signal.Type: ApplicationFiled: March 21, 2013Publication date: September 5, 2013Applicant: Sasken Communication Technologies LimitedInventors: K. P. P. Kalyan Chakravarthy, Navaneetha K. Ruthramoorthy, Pushkar P. Patwardhan, Bishwarup Mondal
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Patent number: 8422558Abstract: The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails.Type: GrantFiled: March 25, 2010Date of Patent: April 16, 2013Assignee: Sasken Communication Technologies LimitedInventors: Sandip Bhaumik, Murali Manohor, Kummini Neelekandhan Manoj, Prakash Murigeppa Harapanahalli
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Patent number: 8407043Abstract: The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio signal. This is accomplished by including more accurate attack detection and a computationally efficient quantization technique. The improved audio coder converts the input audio signal to a digital audio signal. The audio coder then divides the digital audio signal into larger frames having a long-block frame length and partitions each of the frames into multiple short-blocks. The audio coder then computes short-block audio signal characteristics for each of the partitioned short-blocks based on changes in the input audio signal.Type: GrantFiled: March 14, 2011Date of Patent: March 26, 2013Assignee: Sasken Communication Technologies LimitedInventors: K. P. P. Kalyan Chakravarthy, Navaneetha K. Ruthramoorthy, Pushkar P. Patwardhan, Bishwarup Mondal
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Patent number: 8391366Abstract: The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails.Type: GrantFiled: March 25, 2010Date of Patent: March 5, 2013Assignee: Sasken Communication Technologies LimitedInventors: Sandip Bhaumik, Murali Manohor, Kummini Neelahandhan Manoj, Prakash Murigeena Harapanahalli
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Patent number: 8279933Abstract: The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails.Type: GrantFiled: March 25, 2010Date of Patent: October 2, 2012Assignee: Sasken Communication Technologies LimitedInventors: Sandip Bhaumik, Murali Manohor, Kummini Neelakandhan Manoj, Prakash Murigeppa Harapanahalli
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Patent number: 8249353Abstract: The present invention provides a technique for retrieving pictures from a large database that is less complex and uses significantly less memory and computational resources than current techniques. This is accomplished by determining representative data vectors based on a tolerance distance that represents data vectors in a given vector space that defines the picture to extract features of the picture that facilitates in retrieving pictures.Type: GrantFiled: October 10, 2006Date of Patent: August 21, 2012Assignee: Sasken Communication Technologies LimitedInventor: Gomathi Sankar
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Patent number: 7980876Abstract: A system includes an integrated circuit card, a tray configured to receive the integrated circuit card, a connector, and a housing configured to receive the connector. The housing is configured to attach to a mobile communication device, the connector is configured to couple the tray and the integrated circuit card to the mobile communication device, the tray includes one or more one way snaps that are configured to lock the tray and the integrated circuit card to one or more of the connector, the housing, and the mobile communication device, and the tray includes a means for engaging and damaging one or more leads on the connector when attempts are made to disengage the tray and the integrated circuit card from the connector.Type: GrantFiled: January 17, 2008Date of Patent: July 19, 2011Assignee: Sasken Communication Technologies LimitedInventors: Annappa Bombale, Murali Mohan, Sadhu Sharan Prasad, Siddharth Gaikwad
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Publication number: 20110166865Abstract: The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio signal. This is accomplished by including more accurate attack detection and a computationally efficient quantization technique. The improved audio coder converts the input audio signal to a digital audio signal. The audio coder then divides the digital audio signal into larger frames having a long-block frame length and partitions each of the frames into multiple short-blocks. The audio coder then computes short-block audio signal characteristics for each of the partitioned short-blocks based on changes in the input audio signal.Type: ApplicationFiled: March 14, 2011Publication date: July 7, 2011Applicant: Sasken Communication Technologies LimitedInventors: K. P. P. Kalyan Chakravarthy, Navaneetha K. Ruthramoorthy, Pushkar P. Patwardhan, Bishwarup Mondal
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Patent number: 7930170Abstract: The present invention provides a computationally efficient technique for compression encoding of an audio signal, and further provides a technique to enhance the sound quality of the encoded audio signal. This is accomplished by including more accurate attack detection and a computationally efficient quantization technique. The improved audio coder converts the input audio signal to a digital audio signal. The audio coder then divides the digital audio signal into larger frames having a long-block frame length and partitions each of the frames into multiple short-blocks. The audio coder then computes short-block audio signal characteristics for each of the partitioned short-blocks based on changes in the input audio signal.Type: GrantFiled: July 31, 2001Date of Patent: April 19, 2011Assignee: Sasken Communication Technologies LimitedInventors: K. P. P. Kalyan Chakravarthy, Navaneetha K Ruthramoorthy, Pushkar P Patwardhan, Bishwarup Molndal
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Patent number: 7801215Abstract: The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails.Type: GrantFiled: July 24, 2002Date of Patent: September 21, 2010Assignee: Sasken Communication Technologies LimitedInventors: Sandip Bhaumik, Murali Manohor, Kummini Neelekandhan Manoj, Prakash Murigeppa Harapanahalli
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Publication number: 20100177825Abstract: The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails.Type: ApplicationFiled: March 25, 2010Publication date: July 15, 2010Applicant: Sasken Communication Technologies LimitedInventors: Sandip Bhaumik, Murali Manohor, K. N. Manoj, Prakash M.H.
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Publication number: 20100177826Abstract: The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails.Type: ApplicationFiled: March 25, 2010Publication date: July 15, 2010Applicant: Sasken Communication Technologies LimitedInventors: Sandip Bhaumik, Murali Manohor, K. N. Manoj, Prakash M. H.
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Publication number: 20100172417Abstract: The present invention provides an improved motion estimation encoder for digital video encoding applications. In one example embodiment, the improved encoder receives a raw image in the form of a current frame and estimates the macroblock motion vector with respect to a reference frame. The encoder then performs an initial local search around an initial motion vector candidate derived from spatio-temporal neighboring macroblock parameters. The encoder then compares the user-defined complexity scalable sum of absolute difference between the original and the associated reference macroblock against an adaptive threshold value for motion estimation convergence. The encoder introduces a global full search around a candidate from a coarser level, in case an initial local search fails.Type: ApplicationFiled: March 25, 2010Publication date: July 8, 2010Applicant: Sasken Communication Technologies LimitedInventors: Sandip Bhaumik, Murali Manohor, K. N. Manoj, Prakash M. H.
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Patent number: 7599291Abstract: The present invention provides an improved receiver for data-rate detection in a signal received from a transmitter of a cellular radio communication system including multiple transport channels supporting variable data-rate transmissions. This is accomplished by a computationally efficient technique for data-rate detection. The improved receiver receives data and TFCI associated with each of the multiple transport channels. The receiver then obtains a maximum number of valid transport format combinations and a maximum number of TFCIs that can be formed. The receiver then computes a subset of TFCIs using the obtained maximum number of valid transport format combinations and the maximum number of TFCIs, and decodes from the computed subset of TFCIs within the frame to reduce computation during decoding and to improve data-rate detection reliability.Type: GrantFiled: August 8, 2001Date of Patent: October 6, 2009Assignee: Sasken Communication Technologies LimitedInventor: Kiran T
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Publication number: 20090161653Abstract: Embodiments herein provide a method and system for synchronization in a Wireless Communication Network using a new frame, Synchronization Frame (SF), and a configurable length of the same that is transmitted from a Network Controller (NC) to the Network Elements (NEs) in the network. The periodicity of the SF could be changed, to align with the data exchange periodicity, while still keeping synchronization. The length of the SF is made configurable to achieve this effect. It is directly proportional to the period, with which it needs to be transmitted, i.e., a larger delay between two SFs is achievable through the use of a larger SF frame size. This method provides a mechanism in which synchronization between the NC and NEs is achieved by listening to only a part of the SF, which is constant in size. This method also provides tolerance to failure by using acknowledgement schemes.Type: ApplicationFiled: December 11, 2008Publication date: June 25, 2009Applicant: Sasken Communication Technologies LimitedInventors: Praveen KUMAR, Viswanatha Rao Thumparthy
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Patent number: 7433435Abstract: The present invention provides an improved clock correction scheme for multi-carrier transmission systems, based on synchronizing a local receiver with a remote transmitter using estimated phase and frequency drifts between the remote transmitter and local receiver clocks. Also, described are communication devices and methods.Type: GrantFiled: October 22, 2003Date of Patent: October 7, 2008Assignee: Sasken Communication Technologies LimitedInventor: Srikanth Nagaraja
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Patent number: 7394764Abstract: The present invention provides an improved transport protocol for lossy networks. This is accomplished by using computationally efficient techniques to manage invoking congestion control mechanisms to control the transmitted packets in lossy networks. The improved transport protocol receives multiple packets including a header and an associated sequence number. The network is monitored for congestion caused by the received packets and marks the header of some of the packets with an impending congestion indication, based on the outcome of the monitoring. The packets are then transmitted, and a receiver then returns acknowledgements of receipt of each of the transmitted packets. Each of the received acknowledgements includes an associated sequence number and any impending congestion indication assigned to the packet. The protocol monitors each of the received acknowledgements, and based on the outcome of the monitoring, invokes a congestion control mechanism to improve the performance of the transport protocol.Type: GrantFiled: December 14, 2001Date of Patent: July 1, 2008Assignee: Sasken Communication Technologies LimitedInventors: Rohit Ramani, Abhay Karandikar