| TRANSWITCH CORPORATION Patent applications |
| Patent application number | Title | Published |
|---|
| 20120079140 | Techniques for Achieving Complete Interoperability Between Different Types of Data and Multimedia Interfaces in Handheld Devices - A triple-mode connectivity apparatus for enabling interoperability between a multimedia display interface and a data interface. The apparatus comprises a universal connector installed in a first device and structured to enable connectivity between the multimedia display interface and the data interface of a second device, the first device is connected to the second device using a cable having a first connector compliant with the universal connector and a second connecter compliant with the data interface of the second device; a physical layer interface for processing signals compliant with the multimedia display interface and the data interface; and a detector for detecting an interface type of the second device and setting the apparatus to process signals according to the determined interface type. | 03-29-2012 |
| 20120077384 | APPARATUS FOR ENABLING SIMULTANEOUS CONTENT STREAMING AND POWER CHARGING OF HANDHELD DEVICES - An apparatus for enabling simultaneous multimedia content streaming and power charging of handheld devices, comprises a universal connector installed in a first device and enables connectivity of at least one multimedia display interface and at least one data interface with a second device, the first device is connected to the second device using a charging-streaming cable having, at one end, a first connector compliant with the universal connector, and at the other end, a second connector compliant with a multimedia display interface and a third connector compliant with a data interface of the second device, wherein streaming of the multimedia content is from the universal connector in the first device to the second connector in the second device and power charging of the first device is through the third connector of the second device; and a detector for determining a type of the multimedia display interface of the second device. | 03-29-2012 |
| 20110317751 | ADAPTIVE EQUALIZER FOR HIGH-SPEED SERIAL DATA - An adaptive equalizer for high-speed serial data comprises a programmable equalizer for equalizing an input serial data signal to generate an equalized serial data signal, wherein the equalization is based on an optimal equalization mode; a signal quality meter for computing an eye width indication based on the equalized serial data signal, wherein the eye width indication is an indicative of the quality of the equalized serial data signal; and a decision unit for determining the optimal equalization mode based on the eye width indication. | 12-29-2011 |
| 20110311008 | APPARATUS AND METHOD THEREOF FOR CLOCK AND DATA RECOVERY OF N-PAM ENCODED SIGNALS USING A CONVENTIONAL 2-PAM CDR CIRCUIT - An interface circuit for enabling clock and data recovery (CDR) of N-level pulse amplitude modulation (N-PAM) modulated data streams using a 2-PAM CDR circuit. The circuit comprises a number of N−1 comparators for comparing an input data stream to N−1 configurable thresholds, the input data stream is N-PAM modulated and the N−1 configurable thresholds are N−1 different voltage levels; a number of N−1 of edge detectors respectively connected to the N−1 comparators for detecting transitions from one logic value to another logic value, N is a discrete number greater than two; and a determination unit for determining if the detected transitions is any one of a major transition and a minor transition and asserting a transition signal if only a major transition or a minor transition has occurred, the transition signal is fed into a 2-PAM CDR circuit and utilized for recovering a clock signal of the input data stream. | 12-22-2011 |
| 20110239257 | MULTIMODE PHYSICAL LAYER MODULE FOR SUPPORTING DELIVERY OF HIGH-SPEED DATA SERVICES IN HOME MULTIMEDIA NETWORKS - A multimode physical (MMP) layer circuit for physical (PHY) layer handling of signals transported over a high-definition multimedia interface (HDMI) cable in a home multimedia network, wherein the signals are compliant with at least two different PHY layer modes. The MMP layer circuits comprises a plurality of PHY transceivers respectively coupled to a plurality of TP channels of the HDMI cable through a HDMI connector, wherein each PHY transceiver of the plurality of PHY transceivers handles signals transported over its respective TP channel according to a PHY layer mode of the transported signals; and a controller is coupled to the HDMI connector and to each of the plurality of PHY transceivers, the controller recognizes the PHY layer mode of signals transported over each of the plurality of TP channels and sets each of the plurality of PHY transceivers according to the recognized PHY layer mode. | 09-29-2011 |
| 20110179456 | HOME NETWORK ARCHITECTURE FOR DELIVERING HIGH-SPEED DATA SERVICES - A home multimedia network comprises a plurality of source nodes, wherein each of the source nodes includes an apparatus for concurrently transmitting and receiving high-speed data services; a plurality of sink nodes, wherein each of the sink nodes includes the apparatus for concurrently transmitting and receiving high-speed data services; a switch for connecting a first group of the plurality of source nodes located at one room to one or more sink nodes located at a different room than the first group of source nodes, the first group of source nodes and the one or more sink nodes are connected to the switch through a twisted-pair cable, the high-speed data services are concurrently transported over the twisted-pair cable, wherein the high-speed data services include at least uncompressed multimedia data, Ethernet data, and Universal Serial Bus data | 07-21-2011 |
| 20110096793 | FAST ETHERNET AND HDMI ETHERNET CHANNEL PHYSICAL LAYER CIRCUIT - A Fast Ethernet and HDMI Ethernet channel (HEC) physical layer circuit. The physical layer circuit comprises a Fast Ethernet physical layer module implementing a physical layer specification of a Fast Ethernet communication standard; a hybrid circuit connected to the fast Ethernet physical layer module using a first twisted-pair wire and a second twisted-pair wire and capable of processing transmit and receive HDMI Ethernet channel (HEC) signals concurrently transported over a third twisted-pair wire; a switch for bypassing the hybrid circuit; and a controller for controlling the operation the hybrid circuit and the switch according to the operating mode of the physical layer circuit, wherein the operation mode of the physical layer circuit is any of a fast Ethernet and a HEC. | 04-28-2011 |
| 20110063501 | TECHNIQUES FOR ACHIEVING COMPLETE INTEROPERABILITY BETWEEN DIFFERENT TYPES OF MULTIMEDIA DISPLAY INTERFACES - A multimedia interface cable for achieving complete interoperability between different types of multimedia display interfaces. The cable comprises a first multimedia connector including a plurality of contact pins of at least high-speed multimedia signals and control signals; a second multimedia connector including a plurality of contact pins of least high-speed multimedia signals and control signals; a plurality of un-crossing conducting wires for coupling the plurality of contact pins of the high-speed multimedia signals in the first multimedia connector to the plurality of contact pins of the high-speed multimedia signals in the second multimedia connector; and a plurality of conducting wires for coupling the plurality of contact pins of the control signals in the first multimedia connector to the plurality of contact pins of the control signals in the second multimedia connector. | 03-17-2011 |
| 20110013772 | Method and Apparatus for Fast Switching Between Source Multimedia Devices - A multimedia sink apparatus and method thereof, for fast switching between a plurality of source multimedia devices. The apparatus comprises a plurality of input ports, each of the plurality of input ports is connected to a source multimedia device through a high bandwidth multimedia interface; and a plurality of high-bandwidth digital content protection (HDCP) receivers, each of the plurality of the HDCP receivers is connected to an input port, wherein each of the plurality of the HDCP receivers is adapted to perform a first authentication part of a HDCP authentication process, and upon reception of an indication that a respective source device connected to the respective input was selected, to perform a third authentication part of the HDCP authentication process. | 01-20-2011 |
| 20100107212 | APPARATUS FOR SWAPPING HIGH-SPEED MULTIMEDIA SIGNALS - An apparatus for swapping output high-speed multimedia signals. In one embodiment the apparatus comprises a plurality of inputs coupled to a multimedia transmitter; a plurality of outputs coupled to a plurality of pins of a multimedia interface connector; and a controller for generating a control signal for configuring an order in which the plurality of inputs are routed to the plurality of outputs, wherein the order in which the plurality of inputs are routed to the plurality of outputs is set to enable un-crossing of one or more conducting wires coupling the plurality of inputs to the multimedia transmitter and to enable un-crossing of one or more conducting wires coupling the plurality of outputs and the plurality of pins of the multimedia interface connector. | 04-29-2010 |
| 20100095188 | APPARATUS AND METHOD FOR DETECTING AND CORRECTING ERRORS IN CONTROL CHARACTERS OF A MULTIMEDIA INTERFACE - An apparatus and method for detecting and correcting errors in control characters of a multimedia interface. The apparatus comprises a hamming distance filter for detecting and correcting bits errors in a first subset of bits of an input control character including M bits; a glitch filter for detecting and correcting a second subset of bits being a complementary subset of bits of the control character; and an character alignment unit for detecting and correcting misalignment errors between the corrected first subset of bits and the corrected second subset of bits. | 04-15-2010 |
| 20090327652 | METHOD FOR CONSTRUCTING A VARIABLE BITWIDTH VIDEO PROCESSOR - A method for designing a video processor with a variable and programmable bitwidth parameter. The method comprises selecting logical operations having propagation delay that scales linearly with the bitwidth; determining a desired tradeoff curve; and grouping instances of a logic operation having same properties; for a single instance of each logic operation, matching an actual curve of the logic operation to the desired tradeoff curve, wherein the actual curve is determined by the propagation delay and bitwidth of the logic operation. | 12-31-2009 |
| 20090238212 | SYSTEM AND METHOD FOR TRANSFERRING HIGH-DEFINITION MULTIMEDIA SIGNALS OVER FOUR TWISTED-PAIRS - A system and method for transferring high-definition multimedia signals over four twisted-pairs. The system includes a multimedia source for transmitting multimedia data and source-to-sink management data to a multimedia sink over a first channel, a second channel and a third channel wherein the multimedia source is further being capable of transmitting a clock signal to the multimedia sink over a fourth channel; and a multimedia sink for transferring sink-to-source management data to the multimedia source over the fourth channel. The clock signal and the sink-to-source management data are simultaneously transmitted over the fourth channel. Each of the channels comprises a single twisted-pair, thereby the channels can bounded in a twisted pair type cable comprising at least one of: Category 5, Category 5e, Category 6, and Category 6e. | 09-24-2009 |
