Patents Assigned to MEGACHIPS TECHNOLOGY AMERICA CORPORATION
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Patent number: 10585837Abstract: A data transmission method and system for enhanced channel coding efficiency of a DisplayPort interface is disclosed. One method comprises transmitting a plurality of coding units for each micro-packet in each of one or more lanes of a DisplayPort Main Link from a DisplayPort transmitter, wherein each of the coding units comprises: a group of m symbol chunks, each symbol chunk including four 8-bit symbols, wherein in is 2 or 4; and an n-bit code data indicator that precedes the group of m-symbol chunks, wherein n is 2 or 4, and wherein the n-bit code data indicator indicates a content type of the m symbol chunks.Type: GrantFiled: September 4, 2018Date of Patent: March 10, 2020Assignee: MegaChips Technology America CorporationInventors: Alan Kobayashi, Sujan Valiyaka Thomas, Ramakrishna Chilukuri, Rahul Kumar Agarwal, Iyothsna Nagaraja
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Patent number: 10461918Abstract: A data transmission method includes, detecting an incoming link training sequence that is transmitted from an upstream transmitter, generating a marker indicating a timing location of a word included in the incoming link training sequence, generating a self link training sequence based on a local reference clock, adjusting a time difference in the incoming link training sequence and the self link training sequence, and retransmitting an incoming bit stream based on the self link training sequence being matched to the incoming link training sequence.Type: GrantFiled: August 31, 2018Date of Patent: October 29, 2019Assignee: MEGACHIPS TECHNOLOGY AMERICA CORPORATIONInventors: Alan Kobayashi, Rajanatha Shettigara, Ramakrishna Chilukuri, Rahul Kumar Agarwal, Nobuhiro Yanagisawa, Sujan Valiyaka Thomas, Ryuichi Moriizumi, Satoru Kumashiro
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Patent number: 10429882Abstract: A clock generator outputs a processor clock that serves as an operation reference for a processor for use in a content protection system. The clock generator includes a direct digital synthesis and a random number generator. The direct digital synthesizer includes a phase accumulator and outputs the processor clock. The phase accumulator accumulates a setup value in synchronization with a reference clock. The random number generator generates random numbers. The setup value changes based on the random numbers.Type: GrantFiled: June 28, 2017Date of Patent: October 1, 2019Assignee: MEGACHIPS TECHNOLOGY AMERICA CORPORATIONInventors: Alan Kobayashi, Sujan Thomas, Ramesh Dandapani, Johnny Garrett
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Publication number: 20190114282Abstract: A data transmission method and system for enhanced channel coding efficiency of a DisplayPort interface is disclosed. One method comprises transmitting a plurality of coding units for each micro-packet in each of one or more lanes of a DisplayPort Main Link from a DisplayPort transmitter, wherein each of the coding units comprises: a group of m symbol chunks, each symbol chunk including four 8-bit symbols, wherein in is 2 or 4; and an n-bit code data indicator that precedes the group of m-symbol chunks, wherein n is 2 or 4, and wherein the n-bit code data indicator indicates a content type of the m symbol chunks.Type: ApplicationFiled: September 4, 2018Publication date: April 18, 2019Applicant: MegaChips Technology America CorporationInventors: Alan KOBAYASHI, Sujan Valiyaka THOMAS, Ramakrishna CHILUKURI, Rahul Kumar AGARWAL, Iyothsna NAGARAJA
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Publication number: 20190108148Abstract: A data transmission system includes a transmitter having a first switching re-timer and a receiver having a second switching re-timer. The first switching re-timer is configured to double a link rate per lane and halve the number of lanes, and the second switching re-timer is configured to halve the doubled link rate and double the halved number of lanes.Type: ApplicationFiled: August 31, 2018Publication date: April 11, 2019Applicant: MegaChips Technology America CorporationInventors: Maurizio PAGANINI, Alan KOBAYASHI, Ramakrishna CHILUKURI, Rahul Kumar AGARWAL, Nobuhiro YANAGISAWA, Sujan Valiyaka THOMAS
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Patent number: 10241949Abstract: A transmission device includes a converter and a transmitter. The converter converts a plurality of link symbols in DisplayPort (DP) into a data block in Gen 2 in Universal Serial Bus (USB). The transmitter transmits the data block.Type: GrantFiled: July 7, 2017Date of Patent: March 26, 2019Assignee: MEGACHIPS TECHNOLOGY AMERICA CORPORATIONInventors: Alan Kobayashi, Ramakrishna Chilukuri, Sujan Thomas
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Publication number: 20190028262Abstract: A data transmission method includes, detecting an incoming link training sequence that is transmitted from an upstream transmitter, generating a marker indicating a timing location of a word included in the incoming link training sequence, generating a self link training sequence based on a local reference clock, adjusting a time difference in the incoming link training sequence and the self link training sequence, and retransmitting an incoming bit stream based on the self link training sequence being matched to the incoming link training sequence.Type: ApplicationFiled: August 31, 2018Publication date: January 24, 2019Applicant: MEGACHIPS TECHNOLOGY AMERICA CORPORATIONInventors: Alan KOBAYASHI, Rajanatha SHETTIGARA, Ramakrishna CHILUKURI, Rahul Kumar AGARWAL, Nobuhiro YANAGISAWA, Sujan Valiyaka THOMAS, Ryuichi MORIIZUMI, Satoru KUMASHIRO
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Patent number: 10129019Abstract: A DisplayPort (DP) High-bandwidth Digital Content Protection (HDCP) version converter that converts an HDCP content protection version from input to output includes a receiver and a transmitter. The receiver receives a serial bit stream transmitted from an upstream device, and decrypts link symbols of the received serial bit stream by use of a decryption unit. The transmitter encrypts, by use of an encryption unit, the link symbols decrypted by the receiver, and converts the encrypted link symbols into a serial bit stream and transmits the serial bit stream to a downstream device. The receiver and the transmitter have the same link configuration.Type: GrantFiled: September 28, 2016Date of Patent: November 13, 2018Assignee: MEGACHIPS TECHNOLOGY AMERICA CORPORATIONInventors: Alan Kobayashi, Sujan Thomas, Ali Noorbakhsh
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Publication number: 20170308493Abstract: A transmission device includes a converter and a transmitter. The converter converts a plurality of link symbols in DisplayPort (DP) into a data block in Gen 2 in Universal Serial Bus (USB). The transmitter transmits the data block.Type: ApplicationFiled: July 7, 2017Publication date: October 26, 2017Applicant: MEGACHIPS TECHNOLOGY AMERICA CORPORATIONInventors: Alan KOBAYASHI, Ramakrishna CHILUKURI, Sujan THOMAS
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Publication number: 20170300081Abstract: A clock generator outputs a processor clock that serves as an operation reference for a processor for use in a content protection system. The clock generator includes a direct digital synthesis and a random number generator. The direct digital synthesizer includes a phase accumulator and outputs the processor clock. The phase accumulator accumulates a setup value in synchronization with a reference clock. The random number generator generates random numbers. The setup value changes based on the random numbers.Type: ApplicationFiled: June 28, 2017Publication date: October 19, 2017Applicant: MEGACHIPS TECHNOLOGY AMERICA CORPORATIONInventors: Alan KOBAYASHI, Sujan THOMAS, Ramesh DANDAPANI, Johnny GARRETT
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Publication number: 20170019249Abstract: A DisplayPort (DP) High-bandwidth Digital Content Protection (HDCP) version converter that converts an HDCP content protection version from input to output includes a receiver and a transmitter. The receiver receives a serial bit stream transmitted from an upstream device, and decrypts link symbols of the received serial bit stream by use of a decryption unit. The transmitter encrypts, by use of an encryption unit, the link symbols decrypted by the receiver, and converts the encrypted link symbols into a serial bit stream and transmits the serial bit stream to a downstream device. The receiver and the transmitter have the same link configuration.Type: ApplicationFiled: September 28, 2016Publication date: January 19, 2017Applicant: MEGACHIPS TECHNOLOGY AMERICA CORPORATIONInventors: Alan KOBAYASHI, Sujan THOMAS, Ali NOORBAKHSH