Patent application number | Description | Published |
20080246711 | USING PACKET TRANSFER FOR DRIVING LCD PANEL DRIVER ELECTRONICS - In a digital display device, a packet based method of driving selected pixel elements by way of associated data latches included in a column driver is disclosed. For each frame lines in a video frame, a number of video data packets are provided directly to the column driver at a link rate and each of the number of data latches are populated with appropriate video data based upon video data packets within a line period τ. Selected pixel elements are driven based upon the video data. | 10-09-2008 |
20090010253 | PACKET BASED VIDEO DISPLAY INTERFACE - A packet based display interface arranged to couple a multimedia source device to a multimedia sink device is disclosed that includes a transmitter unit coupled to the source device arranged to receive a source packet data stream in accordance with a native stream rate, a receiver unit coupled to the sink device, and a linking unit coupling the transmitter unit and the receiver unit arranged to transfer a multimedia data packet stream formed of a number of multimedia data packets based upon the source packet data stream in accordance with a link rate between the transmitter unit and the receiver unit. | 01-08-2009 |
20090027401 | METHODS AND APPARATUS FOR LATENCY CONTROL IN DISPLAY DEVICES - Various methods, systems, and apparatus for implementing aspects of latency control in display devices are disclosed. According to aspects of the disclosed invention, a source device commands a display device to minimize the delay between the time that image data enters the display device and the time that it is shown on the display device. In one embodiment, the source device transmits data to the display device that specifies whether the display device should time optimize the image data, such as by transmitting a data packet for this purpose either with the image data or on an auxiliary communication link. In another embodiment, the source device and the display device are coupled via an interconnect that comprises multi-stream capabilities, and each stream is associated with a particular degree of latency optimization. | 01-29-2009 |
20090094658 | METHODS AND SYSTEMS FOR DRIVING MULTIPLE DISPLAYS - Methods and systems are described for providing multimedia streams to a plurality of display devices coupled with a source device. An example method includes mapping a first subset of pixels for display on a first one of the plurality of display devices from a native stream at a source device to a first stream, mapping a second subset of pixels for display on a second one of the plurality of display devices from the native stream to a second stream, and transmitting simultaneously the first and second streams from the source device. | 04-09-2009 |
20090219932 | MULTI-STREAM DATA TRANSPORT AND METHODS OF USE - A method of data transmission in a multimedia network. The network having a source coupled to a sink by a linking unit capable of supporting at least one virtual channel. The method receiving a plurality of source data streams in accordance with a native stream rate and packetizing each stream in accordance with its native rate into a stream of payloads, each associated with its respective source stream. Payloads from each source stream are inserted into a transfer unit such that each transfer unit contains one payload from each stream. A stream of transfer units are transmitted through a virtual channel of the linking unit, thereby transmitting more than one source stream in the same virtual channel. | 09-03-2009 |
20090262667 | SYSTEM AND METHOD FOR ENABLING TOPOLOGY MAPPING AND COMMUNICATION BETWEEN DEVICES IN A NETWORK - Methods and systems are described for discovering network topology in a multimedia network. Further the invention describes methods and systems for establishing synchronization between multiple nodes in a multimedia network. Also, disclosed are message transmission systems and methodology using relative path addressing to guide and direct messages in a multimedia network. | 10-22-2009 |
20100031098 | METHOD OF REAL TIME OPTIMIZING MULTIMEDIA PACKET TRANSMISSION RATE - A method and apparatus of optimizing transmission (both real time and continuous) of a number of multimedia data packets between a multimedia source device and a multimedia display device is disclosed. In the described embodiment, the multimedia source device and the display device are coupled by way of a unidirectional main link arranged to carry the multimedia data packets from the multimedia source device and the multimedia display device and a bi-directional auxiliary channel arranged to transfer information between the multimedia source device and the multimedia display device. The method can be carried out by following at least the following operations. Providing a test pattern by the multimedia source device on the main link, determining a transmission quality factor of the main link based upon the test pattern, and optimizing the transmission of the multimedia data packets based upon the transmission quality factor. | 02-04-2010 |
20100046751 | PACKET BASED HIGH DEFINITION HIGH-BANDWIDTH DIGITAL CONTENT PROTECTION - A packet based high bandwidth copy protection method is described that includes the following operations. Forming a number of data packets at a source device, encrypting selected ones of the data packets based upon a set of encryption values, transmitting the encrypted data packets from the source device to a sink device coupled thereto, decrypting the encrypted data packets based in part upon the encryption values, and accessing the decrypted data packets by the sink device. | 02-25-2010 |
20100183004 | SYSTEM AND METHOD FOR DUAL MODE COMMUNICATION BETWEEN DEVICES IN A NETWORK - A packet based display interface configured to operate in a multimedia device in a network and methods to train the packet based display interface is disclosed. The packet based display interface includes a media transport block to communicate video packets across a first unidirectional link, a dual data transport block to communicate packet messages to and from client service blocks across a bidirectional link using multiple transport protocols, and a detection block to determine the addition or deletion of a network device using a second unidirectional link. Each transport protocol uses a different message format on the bidirectional link. The training methods include exchanging messages to determine transport protocol capabilities, training the bidirectional link and setting the transport protocols used. The first and second unidirectional links run in opposite directions, and both the unidirectional links and the bidirectional link use separate physical communication lines bundled together in a common cable. | 07-22-2010 |
20100272102 | SYSTEM AND METHOD FOR PACKET MESSAGING AND SYNCHRONIZATION - System and method for packet messaging and synchronization through a packet based display interface includes using a multiple packet transport protocols, translating packet messages between protocols and achieving time code synchronization with a packet protocol between multiple devices in a multimedia network. A packet based display interface includes a dual data transport module to communicate packet messages using first and second packet transport protocols across a bidirectional link and a media transport module to communicate video packets across a unidirectional link. A method for communicating packet messages between source and slave devices in a multimedia network includes translating messages between different packet transport protocols. An apparatus for synchronizing a sink device to a source device includes a counter module configured to be adjusted based on a received source global time code value and a transport module to transmit a sink global time code value to the source device. | 10-28-2010 |
20100289812 | DEVICE, SYSTEM, AND METHOD FOR WIDE GAMUT COLOR SPACE SUPPORT - Methods, chips, systems, computer program products and data structures are described for conducting modification of color video signals from a first color format associated with an originating format to a second format compatible with a display media of a display device. | 11-18-2010 |
20100289945 | METHOD AND APPARATUS FOR POWER SAVING DURING VIDEO BLANKING PERIODS - Methods and systems are described for enabling display system power saving during the operation of display devices. An integrated circuit package includes input interface circuitry configured to receive an audio-video data stream having a video signal and timing information and timing extraction circuitry that can identify blanking patterns for the video signal. The package includes timing control circuitry configured to implement a power saving process during the blanking periods of the video signal. The invention further includes methods that support the operation of power saving processes. | 11-18-2010 |
20100289949 | OPERATION OF VIDEO SOURCE AND SINK WITH TOGGLED HOT PLUG DETECTION - Methods and systems are described for transmitting and displaying video data after a hot plug event during a start-up dead period. In particular, hot plug events occurring when a toggleable hot plug detection mechanism is use. | 11-18-2010 |
20100289950 | OPERATION OF VIDEO SOURCE AND SINK WITH HOT PLUG DETECTION NOT ASSERTED - Methods and systems are described for displaying enabling the transmission, formatting, and display of multimedia data after a hot plug event during a start-up dead period. In particular, approaches for transmission, formatting, and display of multimedia data in the absence or non-operation of a hot plug detect system or signal, so that multimedia information can be displayed in a proper format even during the dead period when no hot plug detect signal is received. | 11-18-2010 |
20100289955 | DATA LINK CONFIGURATION BY A RECEIVER IN THE ABSENCE OF LINK TRAINING DATA - A receiver is enabled to perform self-configuration of the main data link to receive and display video data. A video data signal is received through a data link having multiple channels or lanes at a specific bit rate. No link configuration data normally associated with the video signal is received. It is then determined which one or more of the channels of the data link are active in transmitting the data signal. A symbol pattern in the data signal is then identified. The symbol rate of the data signal is then synchronized with the local clock frequency. The local clock frequency is set to correspond to the actual bit rate of the data signal, thereby creating a signal-based clock frequency. This local clock frequency is set using only the data signal since no link configuration data associated with the signal is received. In this manner, the receiver configures or trains the link itself using only the video data signal and therefore, the receiver may be described as self-sufficient. | 11-18-2010 |
20100289966 | FLAT PANEL DISPLAY DRIVER METHOD AND SYSTEM - Methods and systems are described for enabling display system data transmission during use. An integrated circuit package includes input interface circuitry configured to receive an audio-video data stream having a video signal and timing information and timing extraction circuitry that can identify blanking patterns for the video signal. The package includes input processing circuitry for receiving audio-video signal and converting the audio-video data stream input into a low voltage differential signal (LVDS). The package includes a timing controller having timing extraction circuitry, a set of symbol buffers, a scheduler, and timing control circuitry. All configured to implement LVDS data transfer and in some implementation enable point to point data transfer from data buffers to associated column drivers. | 11-18-2010 |
20100293287 | WIRELESS MULTIMEDIA TRANSPORT METHOD AND APPARATUS - Apparatus and methods for wireless data transmission in a multimedia network are disclosed. Disclosed is a network having a source coupled to a sink using a virtual channel that includes a wireless communication channel. A source end of the system provides a packetizing data stream having a stream of payloads such that each payload is associated with its respective originating source stream. The system configured to encode the packetized data stream for wireless transport. A non-wireless source end of the system receives quality of service information from downstream. Thereby enabling adjustments to the source content and packetized data streams. | 11-18-2010 |
20100293366 | FREQUENCY AND SYMBOL LOCKING USING SIGNAL GENERATED CLOCK FREQUENCY AND SYMBOL IDENTIFICATION - Methods and systems are described for displaying video data after a hot plug event during a start-up dead period. In particular, approaches for receiving data, determining whether link training can be performed and, if not, self-configuring a receiver to display the information in a proper format even during the dead period. | 11-18-2010 |
20100295384 | PC DOCKING STATION SIMPLIFICATION - A simplified docking station arranged to couple together a media source device and a media sink device is disclosed. The docking station is configured to accept power from the media source device for powering the docking station itself and for providing power to the media sink device. | 11-25-2010 |
20100296562 | DATA SIGNAL IMPROVEMENT USING SIGNAL PEAK DETECTORS IN A RECEIVER - Methods and systems are described for improving a data at a receiver using one or more signal peak detectors. A signal is received having an initial signal level from the transmitter, the signal having a long bit and a short bit. The initial signal voltage of the signal is measured using a signal peak detector. A pre-emphasis value is determined using the signal voltage and is communicated to the transmitter, causing the transmitter to transmit the signal using an adjusted signal level. A second signal voltage of the initial signal is measured using a second signal peak detector, the second signal voltage being used to determine the pre-emphasis value. In another embodiment, a state machine having data relating to appropriate pre-emphasis is used in determining the pre-emphasis value. In another embodiment, one peak detector is used to measure the long bit and another peak detector is used to measure the short bit. In another embodiment, the signal does not have associated link training data. | 11-25-2010 |
20100303187 | AUTOMATICALLY SYNCHRONIZING RING OSCILLATOR FREQUENCY OF A RECEIVER - A ring oscillator in a receiver in a multimedia network is adjusted to compensate for factors that may decrease its accuracy over time using a link training signal from a transmitter device in the network. An incoming signal having a known frequency is received at a receiver or sink device from a transmitter, the signal may be a link training signal used for configuring a link between the two devices. In the receiver, an internally generated clock signal is created, the signal having an internal frequency. The incoming signal and the internally generated clock signal are input into a frequency detector which outputs frequency comparison-based data. The internal frequency is based on the comparison-based data such that it is adjusted to be closer to the known frequency of the incoming signal. | 12-02-2010 |
20110145877 | DATA RATE THROTTLING IN AN INTERNAL PACKET-BASED INTERFACE - Methods and systems for transmitting video pixel data from a transmitter component, such as a controller, to a receiver within a monitor are described. Video data is received at a transmitter at an incoming pixel rate based on a pixel clock. The data is transmitted to the receiver at a link symbol clock rate and is drained from the receiver at the pixel clock rate, which is regenerated by the receiver using the link symbol clock frequency, an M video value, and an N video value. The M video value (Mvid) is determined by the transmitter based on the incoming pixel rate and the N video value (Nvid) may be constant. An accumulator is used within the transmitter to ensure that the transmitter and receiver create a balanced system. | 06-16-2011 |
20110191480 | PACKET-BASED DIGITAL DISPLAY INTERFACE SIGNAL MAPPING TO MICRO SERIAL INTERFACE - A passive cable adaptor for connecting a data source device with a display device is described. The adaptor has a packet-based interface connector at one end, the connector having a positive main link pin, a negative main link pin, a positive auxiliary channel pin, and a negative auxiliary channel pin. At the other end is a micro serial interface connector, wherein multimedia content is transmitted over the cable adaptor and electrical power is supplied over the cable adaptor simultaneously. The cable adaptor has an auxiliary and hot plug detect (HPD) controller utilized to map the auxiliary channel and HPD signals of the packet-based digital display to the micro serial interface ID signal. | 08-04-2011 |
20110191814 | PACKET-BASED DIGITAL DISPLAY INTERFACE SIGNAL MAPPING TO BI-DIRECTIONAL SERIAL INTERFACE SIGNALS - A passive cable adaptor for connecting a data source device with a display device is described. The adaptor has a packet-based interface connector at one end, the connector having a positive main link pin, a negative main link pin, a positive auxiliary channel pin, and a negative auxiliary channel pin. Also at the same end is a serial interface connector, such as a serial interface connector. At the other end is an upgraded serial interface connector (e.g., enhanced serial interface) connector having high-speed transmission pins, high-speed receiving pins, and a ground pin, wherein multimedia content is transmitted over the cable adaptor and electrical power is supplied over the cable adaptor simultaneously. | 08-04-2011 |
20110292059 | VIDEO FRAME SELF-REFRESH IN A SINK DEVICE - A sink device having a display panel capable of performing a video frame self-refresh as directed by a source device is described. A source determines that a video frame will persist (i.e., remain the same). In this situation, the frame data does not need to be repeatedly transmitted over a main link between the source and sink devices. The main link can be turned off and transmission can cease for a certain time thereby reducing power usage by the devices or system as a whole. The source ensures that the last frame transmitted to the sink is correct by performing CRC checks and then instructs the sink, via certain bit settings in a video status indication symbol, to store the last transmitted frame in the sink's local buffer and use that frame to refresh the panel. The source can then disable the self-refresh when the frame changes. | 12-01-2011 |
20110293035 | LEVEL SHIFTING CABLE ADAPTOR AND CHIP SYSTEM FOR USE WITH DUAL-MODE MULTI-MEDIA DEVICE - Methods and systems are described for enabling improved interface between a dual-mode multimedia source that supports a pair of data formats and a sink device operable using inputs in a third data format. An adaptor device enabling improved connectivity as well as backward compatibility with legacy devices is disclosed. The system enables the transmission of sideband channel configured in an I | 12-01-2011 |
20110298982 | DE-ROTATION ADAPTOR AND METHOD FOR ENABLING INTERFACE OF HANDHELD MULTI-MEDIA DEVICE WITH EXTERNAL DISPLAY - Methods, systems and circuit elements that enable improved interface between a source electronic devices that generate rotatable image frames and an external sink device. In particular, aspects of the invention enable image de-rotation and/or improved speed in horizontal and V-scaling of image data supplied to an external sink device. | 12-08-2011 |
20120120205 | ACCELERATED BLACK FRAME INSERTION FOR DISPLAYING 3D CONTENT - An accelerated black frame is inserted into an output vertical blanking period, keeping the output VBI at the same length or shorter than the input VBI. The output VBI is not extended. Input video data is received at a frame memory at a first transmission rate during an input active frame period. The video data is transmitted from the frame memory to a display at a second transmission rate during an output active frame period. The second transmission rate is faster than the first rate, which would normally lead to an extended output VBI. The transmitting (pouring in of data into the frame buffer) ends at the same time as all the data has been received at the monitor (drained). A black data frame which consists of meaningless data is inserted into the output VBI such that the output VBI is not longer than the input VBI. | 05-17-2012 |
20120163188 | WIRELESS MULTIMEDIA TRANSPORT METHOD AND APPARATUS - Apparatus and methods for wireless data transmission in a multimedia network are disclosed. Disclosed is a network having a source coupled to a sink using a virtual channel that includes a wireless communication channel. A source end of the system provides a packetizing data stream having a stream of payloads such that each payload is associated with its respective originating source stream. The system configured to encode the packetized data stream for wireless transport. A non-wireless source end of the system receives quality of service information from downstream. Thereby enabling adjustments to the source content and packetized data streams. | 06-28-2012 |
20120229486 | Compact Packet Based Multimedia Interface - A packet based display interface arranged to couple a multimedia source device to a multimedia sink device is disclosed that includes a transmitter unit coupled to the source device arranged to receive a source packet data stream in accordance with a native stream rate, a receiver unit coupled to the sink device, and a linking unit coupling the transmitter unit and the receiver unit arranged to transfer a multimedia data packet stream formed of a number of multimedia data packets based upon the source packet data stream in accordance with a link rate between the transmitter unit and the receiver unit. | 09-13-2012 |
20130007432 | Frequency and Symbol Locking Using Signal Generated Clock Frequency and Symbol Identification - Methods and systems are described for displaying video data after a hot plug event during a start-up dead period. In particular, approaches for receiving data, determining whether link training can be performed and, if not, self-configuring a receiver to display the information in a proper format even during the dead period. | 01-03-2013 |