Abstract:
Various techniques are provided for implementing a hybrid electrical-optical interface. In one example, the hybrid electrical-optical interface includes a connector body configured to mate with a high-definition multimedia interface (HDMI) component in accordance with a predetermined mechanical misalignment tolerance, a plurality of electrical conduits at least partially disposed within a central region of the connector body and configured to pass electrical signals, and first and second optical conduits at least partially disposed within first and second peripheral regions of the connector body adjacent to the central region, wherein the optical conduits are configured to pass optical signals through a free space gap formed while the connector body is mated with the HDMI component and configured to maintain communication of the optical signals through the free space gap while the connector body and the HDMI component are within the misalignment tolerance. Additional implementations and related methods are also provided.
Abstract:
A source device and a sink device perform a link training process on a multimedia interface cable. The sink device includes one or more request registers. During the link training process, the sink device stores request codes in the request registers. Each request code is a request for the source device to perform a certain action. The source device reads the request codes and performs the corresponding actions. For example, if the source device reads request codes to send one or more training pattems, then the source device sends the training patterns over the multimedia link. In response to receiving the training patterns, the sink device can selects one or more updated request codes (e.g., to send different training patterns or to adjust link parameters, such as the link rate or a pre-emphasis level).
Abstract:
Various techniques are provided for implementing a hybrid electrical-optical interface. In one example, the hybrid electrical-optical interface includes a connector body configured to mate with an universal serial bus (USB) component in accordance with a predetermined mechanical misalignment tolerance, a plurality of electrical conduits disposed within the connector body and configured to pass electrical signals, and an optical conduit disposed within the connector body between at least two of the electrical conduits, wherein the optical conduit is configured to pass optical signals through a free space gap formed while the connector body is mated with the USB component, and configured to maintain communication of the optical signals through the free space gap while the connector body and the USB component are within the misalignment tolerance. Additional implementations and related methods are also provided.
Abstract:
Embodiments of the present disclosure are related to identifying the orientation of a multimedia link connected between a source device and a sink device. A sink device includes a plurality of pins that are configured to interface with a plurality of pins of the multimedia link. The sink device identifies based on the values of one or more pins of the plurality of pins of the sink device whether the multimedia link is connected to the sink device. Further, the sink device determines an orientation of the multimedia link connected to the sink device. The multimedia link can be in one of two orientations, straight or flipped. The sink device may communicate the orientation of the multimedia link to the source device. The source device may perform lane mapping based on whether the multimedia link is in the straight or flipped orientation.
Abstract:
Embodiments relate to half-duplex bidirectional transmission of data compliant with a first standard (e.g., Universal Serial Bus (USB) standard) over a physical channel of a multimedia link for transmitting audio/video ("A/V") data compliant with a second standard (e.g., Mobile High-Definition Link (MHL) standard) between a source device and a sink device using time division multiplexing (TDM). The source device sends units of data including A/V data and forward data compliant with the first standard at first times whereas the sink device sends units of data including backward data compliant with the first standard at second times between transmissions from the source device. The first times do not overlap with the second times. Synchronization signals may be added to the first and second units of data to align character symbols embedded in the first and second units of data.
Abstract:
A source device includes a forward error correction encoder circuit to generate error correction protected blocks from video data packets. Each error correction protected block includes data words and error correction words. An encoder circuit encode X-bit words of the error correction protected blocks into Y-bit encoded words for transmission to a sink device over one or more multimedia lanes of a multimedia communication link, where X is smaller than Y.