Sony Corporation

Sony Electronics Inc

Paul Doyle

Peter Rae Shintani

Rafael Calderon

Don L Moore

Eiji Kono

Andrew Bryant

Karl Lang

Matthew C Boyko

Tetsuya Nomura

Martin Kolinek

Roy Bragadeste

Mike McKay

A circuit for detection of an HDMI source device to an HDMI sink device through an HDMI sink connector without regard for the activity state of the HDMI source device has a pull-up resistor having first and second terminals with the first terminal coupled to a DC power source. A switching device is coupled between the pull-up resistor's second terminal and ground at a circuit node. The switching device is switched on to couple the circuit node to ground when power is applied to a control terminal thereof from the HDMI sink connector power pin, and being switched off otherwise. The circuit node is coupled to a DDC/CEC GROUND pin of the HDMI sink connector. The circuit node is readable as a binary signal to indicate the presence of a source device to the HDMI sink connector, wherein the node exhibits a logic low signal when either the node is grounded by the DDC/CEC GROUND pin connection to a source device or when the switching device is switched on. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

HDMI source detection

A TV detects the capabilities of connected components to respond to various function commands. Subsequently, when a non-programmable remote control is used to select a component and then generate a function command, the TV determines if the component can respond to the command and if not, the TV dynamically alters the commanded function or the selected component.

Non-programmable universal remote system and method

A color calibration system includes a visual display terminal (VDT), a color calibration sensor optically coupled to the VDT, and a computer processing unit (CPU) electrically coupled to the VDT and the color calibration sensor. The VDT has a display screen and a plurality of color channels, each color channel having an intensity input, a bias input, and a gain input. The VDT produces an image on the display screen responsive to the intensity input. The color calibration sensor provides values responsive to the chromaticity and luminance of a test patch portion of the image on the display screen. The CPU performs calibration of the VDT including setting the bias of each color channel to reduce the difference between a target black point and the test patch with the intensity input at a minimum value for each color channel.

Color reference system for display monitor

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San Marcos, CA, United States of America

Paul Doyle