Transmission device and reception device

Patent metadata

Field	Value
Publication number	US-9900653-B2
Application number	US-201615345977-A
Country	US
Kind code	B2
Filing date	Nov 8, 2016
Priority date	Mar 5, 2008
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

An external device may recognize, in the case of including a communication unit that executes communication via a communication path made up of a pair of differential transmission paths included in a transmission path, information relating to the communication unit thereof.
A disk recorder transmits function information indicating that a communication unit (high-speed data line I/F 213 ) configured to execute communication with an external device via a communication path made up of a reserve line and an HPD line of an HDMI cable to a television receiver via a CEC line that is a control data line of the HDMI cable. The television receiver receives function information, whereby whether or not the disk recorder is an eHDMI-compatible device can be determined, and in the case of an eHDMI-compatible device, a compatible transmission format (application) can be recognized.

First claim

The invention claimed is:

1. A reception method for a reception device comprising the steps of:
receiving video signals from a transmission device in accordance with an HDMI standard via one or more channels interconnected to an HDMI terminal;
communicating with said transmission device via a pair of differential transmission paths interconnected to said HDMI terminal;
receiving first function information from said transmission device, the first function information for notifying said reception device that said transmission device includes a high-speed data line interface that supports transmission of at least one of an Ethernet signal and a digital audio signal, said first function information being received via a control data line interconnected to said HDMI terminal;
transmitting second function information via the control data line from said reception device, said second function information indicating that said reception device also includes a respective high-speed data line interface configured to communicate the at least one of an Ethernet signal and a digital audio signal with said high-speed data line interface of the transmission device via the pair of differential transmission paths interconnected with said HDMI terminal; and
receiving communication information indicating a communication shutoff state with said transmission device via the control data line interconnected to said HDMI terminal, and
wherein the pair of differential transmission paths includes a reserve line and an HPD line interconnected to the HDMI terminal, and at least one of said pair of differential transmission paths further includes a function for providing a connection state of said external device using a DC bias potential, and
wherein the received video signals are transported as packetized video data.

2. A reception device comprising:
a processor configured to:
receive video signals from the reception device in accordance with an HDMI standard via one or more channels interconnected to an HDMI terminal;
communicate with said transmission device via a pair of differential transmission paths interconnected to said HDMI terminal;
receive first function information from said transmission device, the first function information notifying said reception device that said transmission device includes a high-speed data line interface that supports transmission of at least one of an Ethernet signal and a digital audio signal, said first function information being transmitted via a control data line interconnected to said HDMI terminal;
transmit second function information via the control data line from said reception device, said second function information indicating that said external device also includes a respective high-speed data line interface configured to communicate the at least one of an Ethernet signal and a digital audio signal with said high-speed data line interface of the transmission device via the pair of differential transmission paths interconnected with said HDMI terminal; and
receive communication information indicating a communication shutoff state with said external device via the control data line interconnected to said HDMI terminal,
wherein the pair of differential transmission paths includes a reserve line and an HPD line interconnected to the HDMI terminal, and at least one of said pair of differential transmission paths further includes a function for providing a connection state of said external device using a DC bias potential, and
wherein the received video signals are transported as one or more packets of video data.

Assignees

• Sony Corp

Inventors

• Kitano Masaki
• Kondo Kazumoto
• Hayashi Toshihide
• Ichimura Gen

Classifications

• H04N21/4147

  PVR [Personal Video Recorder] (H04N5/76 takes precedence {; arrangements for broadcast with accumulation-type receivers H04H20/40}) · CPC title

• H04N5/781

  on disks or drums · CPC title

• H04N21/43622

  Interfacing an external recording device · CPC title

• G09G2370/12

  Use of DVI or HDMI protocol in interfaces along the display data pipeline · CPC title

• H04N21/44227

  Monitoring of local network, e.g. connection or bandwidth variations; Detecting new devices in the local network (configuring of peripheral devices in general G06F9/4411; monitoring connectivity in data switched networks H04L43/0811) · CPC title