A transmitting device for communicating via a multimedia communication link includes a compression circuitry that receives blanking period data corresponding to blanking states of video blanking periods. The compression circuitry compresses the blanking period data into compressed blanking period data. The transmitting device also includes an interface that transmits signals corresponding to the compressed blanking period data via one or more multimedia channels of the multimedia communication link.

A transmitting device for communicating via a multimedia communication link includes a compression circuitry that receives blanking period data corresponding to blanking states of video blanking periods. The compression circuitry compresses the blanking period data into compressed blanking period data. The transmitting device also includes an interface that transmits signals corresponding to the compressed blanking period data via one or more multimedia channels of the multimedia communication link.

Systems, methods, apparatuses, and computer program products which generate a Precision Time Protocol (PTP) timestamp associated with a first video frame of a serial digital interface (SDI) signal and insert the PTP timestamp into at least one of a Vertical Ancillary (VANC) data space and a Horizontal Ancillary (HANC) data space of the first video frame.

Systems, methods, apparatuses, and computer program products which generate a Precision Time Protocol (PTP) timestamp associated with a first video frame of a serial digital interface (SDI) signal and insert the PTP timestamp into at least one of a Vertical Ancillary (VANC) data space and a Horizontal Ancillary (HANC) data space of the first video frame.

Aspects relate to transmission of metadata from a source to a sink device, and optionally through one or more intermediaries. A source device encodes metadata into what would have been a blanking area of a field to be transmitted, according to a current video format. The source device encodes a timing for an active video data signal that is modified from a timing that would be used only for transmission of video data at a current resolution. A separate indicator from the source, or a negotiation between source and sink allows the sink to determine what part of the data indicated as being active video data is metadata, and to use that metadata for controlling aspects of the video display, and to use other parts of the received video data as video data for display. A sink can signal supported capabilities to a source.

Video systems with video receivers for receiving video signals transmitted in analog format over a video link are described. An example video receiver includes an interferer identification circuit and an interferer removal circuit. The interferer identification circuit is configured to identify a periodic interference signal (e.g., from one or more of vertical blanking intervals (VBIs)) of a received video signal. The interferer removal circuit is configured to generate a filtered video signal, where generation of the filtered video signal includes, for each line of a given frame of the received video signal, generating an adjusted interference signal by adjusting a phase of the identified interference signal to match a phase of a periodic noise signal in at least a portion of a horizontal blanking interval (HBI) associated with the line, and subtracting the adjusted interference signal from a plurality of active pixel values of the line.

Video systems with video receivers for receiving video signals transmitted in analog format over a video link are described. An example video receiver includes an interferer identification circuit and an interferer removal circuit. The interferer identification circuit is configured to identify a periodic interference signal (e.g., from one or more of vertical blanking intervals (VBIs)) of a received video signal. The interferer removal circuit is configured to generate a filtered video signal, where generation of the filtered video signal includes, for each line of a given frame of the received video signal, generating an adjusted interference signal by adjusting a phase of the identified interference signal to match a phase of a periodic noise signal in at least a portion of a horizontal blanking interval (HBI) associated with the line, and subtracting the adjusted interference signal from a plurality of active pixel values of the line.

Video systems with video receivers for receiving video signals transmitted in analog format over a video link are described. An example video receiver includes an interferer identification circuit and an interferer removal circuit. The interferer identification circuit is configured to identify a periodic interference signal (e.g., from one or more of vertical blanking intervals (VBIs)) of a received video signal. The interferer removal circuit is configured to generate a filtered video signal, where generation of the filtered video signal includes, for each line of a given frame of the received video signal, generating an adjusted interference signal by adjusting a phase of the identified interference signal to match a phase of a periodic noise signal in at least a portion of a horizontal blanking interval (HBI) associated with the line, and subtracting the adjusted interference signal from a plurality of active pixel values of the line.

Video systems with video receivers for receiving video signals transmitted in analog format over a video link are described. An example video receiver includes an interferer identification circuit and an interferer removal circuit. The interferer identification circuit is configured to identify a periodic interference signal (e.g., from one or more of vertical blanking intervals (VBIs)) of a received video signal. The interferer removal circuit is configured to generate a filtered video signal, where generation of the filtered video signal includes, for each line of a given frame of the received video signal, generating an adjusted interference signal by adjusting a phase of the identified interference signal to match a phase of a periodic noise signal in at least a portion of a horizontal blanking interval (HBI) associated with the line, and subtracting the adjusted interference signal from a plurality of active pixel values of the line.

Disclosure herein includes descriptions of a method for transmission of digital audio over analog video data with a single cable. The method comprising receiving, by a video transmitter, a digital video signal and one of a digital or an analog audio signal. Sampling, by an audio analog-to-digital converter (ADC), the audio signal if it is an analog audio signal. Storing, in a First-in-First-Out (FIFO) buffer, digital audio data corresponding to the sampled analog audio signal; reading, by an arbiter, the digitized audio samples, in response detecting an availability of data in the FIFO buffer and formatting the serialized audio bits with a digital start code; inserting the serialized audio bits and the digital start code into a blanking period of the digital video signal, thereby generating a combined digital audio and video signal and converting, by a digital-to-analog converter (DAC), the combined digital audio and video signal to analog, thereby generating a combined analog audio and video stream including audio data in a native form; and transmitting the combined analog audio and video stream to a receiver in one direction. In another embodiment, an analog signal is transmitted in the opposite direction.