Thomson Licensing

Thomson Licensing S.a.

Koninklijke Philips Corporation N.v.

Deutsche Thomson-brandt Gmbh

Scholly Fiberoptic Gmbh

Thomson Multimedia S.a.

Rainer Zwing

Carlos Correa

Sébastien Weitbruch

Didier Doyen

Cédric Thebault

Sebastien Weitbruch

Patrick Morvan

Franck Abelard

Philippe Leyendecker

Ingo Tobias Doser

Gangolf Hirtz

Sébastien Desert

Jurgen Stauder

Bongsun Lee

Paul Daniel Wolf

Michael Allan Sterling

Wolfgang Endress

S&eacute;bastien Weitbruch

Axel Goetzke

Xueming Henry Gu

Norbert N Eigeldinger

David J Woolgar

Ian Michael Simmons

Pierre Jean Ollivier

Mohammed Shameem Hussain

Dimitri Croise

Wolfgang Reinhart

A camera controller () with an image data stream input () and an image data stream output (), wherein a first image data stream path () and a second image data stream path () are formed. An image processing unit () is arranged in the second image data stream path (). A switching unit () is controlled by a comparison unit (). The comparison unit () compares a first checking data stream (), which was diverted from an image data stream () upstream of the image processing unit (), and a second checking data stream (), which was diverted from the image data stream downstream of the image processing unit (). The image data stream paths are switched via the switching unit () if the deviation of the second checking data stream () from the first checking data stream () exceeds a threshold value.

Apparatus and method for processing an image data stream by comparing first and second checking data streams

The invention relates to a reproduction device (), with a device () acting as a source of digital services. It also relates to a method of synchronizing two parts of a digital service in a system including a source device according to the invention and at least one reproduction device according to the invention. According to the invention, the reproduction device () includes means for receiving the data forming at least a part of a digital service originating from a digital service source device (), means for processing () at least some of the data received, means () for reproducing an output of at least a part of the digital service, the time for processing and reproducing the data introducing a delay in the output of the reproduced data. This device also includes communication means () for informing the source device of the delay introduced.

Device and method for synchronizing different parts of a digital service

A method, apparatus and system for providing color grading or color correction for displays includes a plurality of virtual device models where each virtual device model has a virtual model specification (VMS) which controls a display feature. Each display includes a display specification including a display requirement or requirements. An apparatus of the present invention is configured to compare the display feature of at least one VMS against the display requirement of the display specification to determine a best match therebetween to select a virtual device model to control a display picture. Color correction is further provided in post production using the VMS to provide consistency across multiple display types.

Method, apparatus and system for providing color grading for displays

A method and system are provided for look data definition and transmission over a high definition multi-media interface (HDMI). The method includes generating metadata for video content. The metadata is used for altering the video content before display thereof by accounting for variations between different display devices and variations between different creative intents by a content creator. The method further includes preparing the video content and the metadata for transmission over a high definition multimedia interface.

Method and system for look data definition and transmission over a high definition multimedia interface

A method is disclosed to determine the topology of a network comprising a master node and one or more slave nodes interconnected using unidirectional data connections. The master node makes available data to succeeding nodes, and a slave node reads data from a preceding node, the read data comprising information of a path from master node to the slave node. A further method is disclosed to configure the path by sending data from the slave node to all nodes on the path via bi-directional data connections between nodes.

Determining and configuring a communication path in a network

The invention relates to a reproduction device, with a device acting as a source of digital services. It also relates to a method of synchronizing two parts of a digital service in a system including a source device according to the invention and at least one reproduction device according to the invention. According to the invention, the reproduction device includes means for receiving the data forming at least a part of a digital service originating from a digital service source device, means for processing at least some of the data received, means for reproducing an output of at least a part of the digital service, the time for processing and reproducing the data introducing a delay in the output of the reproduced data. This device also includes communication means for informing the source device of the delay introduced.

The invention concerns a video processing for improving the picture quality of picture which are displayed on display devices like plasma display panels and all kind of display devices based on the principle of duty cycle modulation of light emission and for reducing the average power dissipation. The basic idea behind the invention is to generate only the required amount of sustain pulses that effectively produce light and to avoid generating unnecessary sustain pulses. To this end, the video range of the input video is increased in order to be equal to a nominal range, 255 in the case of a 8-bit coding, and a power level mode with a reduced number of sustain pulses is selected to keep constant the brightness of the image. The number of sustain pulses that do not produce light is reduced.

Method and apparatus for power level control of a display device

The invention relates to a method for power level control of a display device and an apparatus for carrying out the method. Classically, a power level mode defining a subfield organization to be used for subfield coding is selected as a function of the average power level of the picture to be displayed for keeping constant the power consumption of the display device. According to the invention, it is proposed to select the power level mode as a function of the input frame frequency in such a way as to have as little as possible deviations from nominal peak white and full white values at the same time that an overloading of the panel power supply is prevented. More particularly, the number of sustain pulses within the video frame and selected by the power level mode is modified as a function of the input frame frequency.

Method and apparatus for power level control in a display device

The invention relates to a new method for power level control of a display device and an apparatus for carrying out the method. Classically, the contrast/brightness control and the power management (based on an average power level control) are made independently. These two controls can be contradictory. According to the invention, the power level mode and more particularly the number of sustain pulses within the video frame is selected as a function of the average power level (APL) of the picture to be displayed and the picture control signal representing the desired contrast and/or brightness value.

Method and apparatus for power control in a display device

A plasma display panel is a pure linear display and does not provide a non-linear gamma behavior like a CRT so that an artificial gamma function has to be applied to the signal in digital form. This gamma function increases the quantization steps in the dark areas whereas the quantization steps will be reduced in the luminous areas. The basic idea is to apply an adaptive noise filtering after the gammatization process. The adaptive filtering is a specific filtering which is adapted to the gammatization quantization noise. In other words, the filtering will be maximum for dark areas and its efficacy will be automatically decreased when the luminance of the area is increasing.

Adaptive noise reduction for digital display panels

The invention relates to a method for processing video pictures data for display on a display device having a plurality of luminous elements corresponding to the pixels of a video picture. The invention is related to every kind of display devices based on the principle of duty cycle modulation (pulse width modulation) of light emission and comprising a data driver. The aim of this method is to reduce the data driver overheating by optimizing the dithering of the pixel values of the video pictures. According to the invention, the pixel values used for dithering are chosen for reducing the state changes between successive bits of subfield code words of adjacent luminous elements.

Method and device for processing video pictures

Phosphor based display technologies show artefacts like 'sticking' or 'ghost' images produced by &#x201c;marking&#x201d; or &#x201c;burn-in&#x201d; effects. In order to remove these artefacts, it is proposed to activate a portion of the display screen as a wiper and to move the wiper at least one time over the complete display screen or a part of the display screen. The wiper will homogenize the complete video screen in order to make the ghost images less visible. Another embodiment is dedicated to the reduction of the short-term burning effect. Here, a dynamic correction of the displayed picture is done. A memorized picture could be subtracted from the current picture in order to reduce the visibility of the short term sticking effect.

Method and device for compensating burn-in effects on display panels

Plasma Display Panels (PDP) are becoming more and more interesting for TV technology. Due to the larger size of PDPs, with larger viewing angle the large area flicker effect will become more serious in the future, in particular when handling 50 Hz video standards. This invention proposes a different sub-field organisation, with different coding, which reduces large area flicker artefact, and which is characterised by:

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Villingen-Schwenningen, Germany

Rainer Zwing