摘要:
The current invention proposes a mechanism that is implemented in the DNG (1.2) so as to allow unicast UDP streams between the DVB-IP server (1.2) and the DVB-IP client (1.6) to pass through the DNG. For that, the invention also proposes a mean for an automatic modification of the RTSP messages in the DNG, in order to have the DVB-IP server discuss only with the DNG and then the DNG retransmits the information from the DVB-IP server to the right DVB-IP client.
摘要:
When the observation point on a PDP screen moves, artefacts will be introduced which are commonly described as "dynamic false contour". A simple way to reduce this effect requires the use of more sub-fields at the expense of panel brightness. A first idea called Bit-Line-Repeat (BLR) makes it possible to exchange vertical resolution with addressing time in order to dispose of more sub-fields for the same brightness. Nevertheless, such a solution introduces some vertical artefacts mostly during movement. Therefore, before the step of sub-field encoding a vertically filtering of the picture divided into pixel blocks is performed, wherein each block includes at least one pixel in horizontal direction and a number of pixels corresponding to the number of common lines in vertical direction. The effect of the pre-filtering step is that the difference of brightness values within each pixel block is limited to a predetermined value. In that case the BLR introduces only a slight vertical loss free from motion artefacts.
摘要:
A subject of the invention is to ensure that a remote display device is only useable for a specific application like advertising or public information. According to the invention, this object is solved by a method for distributing display information to a remote display device, comprising the steps of: - providing (100) the remote display device with a signal comprising an activation key and the display information, - providing (200) the control unit of the remote display device with a locking function using a control key, and - comparing (300) the activation key to the control key and authorizing (400) the displaying of the display information by deactivating the locking function if the activation key is fitting with the control key.
摘要:
L'invention concerne un dispositif de reproduction (21), un dispositif (20) agissant comme une source de services numériques. Elle concerne également une méthode de synchronisation de deux parties d'un service numérique dans un système comprenant un dispositif source selon l'invention et au moins un dispositif de reproduction selon l'invention. Selon l'invention, le dispositif de reproduction (21) comprend des moyens pour recevoir des données constituant au moins une partie d'un service numérique provenant d'un dispositif source de services numériques (20), des moyens pour traiter (210) au moins une partie des données reçues, des moyens (211) pour reproduire une sortie d'au moins une partie du service numérique, le temps de traitement et de reproduction des données introduisant un retard dans la sortie des données reproduites. Ce dispositif comprend en outre des moyens de communication (213) pour informer le dispositif source du retard introduit.
摘要:
The present invention relates to a method for improving grey scale fidelity portrayal of pictures displayed on matrix display screens. The method comprises the following steps :
a) for a given peak white level, distributing the sustain pulses among the sub-fields, the number of pulses corresponding to the sub-field weighting, b) mapping the sub-field codes to luminance codes, c) re-ordering luminance codes in a definite order, d) mapping the video levels to the available luminance codes, e) processing the video levels to achieve intermediate levels of luminance f) then, mapping luminance codes to the output sub-field codes.
The method is used in plasma display panels (P DP).
摘要:
Stereoscopic displaying on a plasma display panel shows the problem of loss of light since each eye will only perceive half of the available plasma luminance. To solve this problem it is proposed to make the displaying based on three components (L',C',R') instead of two, one for the picture commonly seen by the two eyes (C'), one specific to the right eye (R') and one specific to the left eye (L'). In addition, a new kind of encoding algorithm will give the possibility to obtain these three pictures without the need of more sub-fields. According to this algorithm for corresponding pixels of a left picture and a right picture sub-fields code words are determined which have identical entries for a number of sub-fields called common sub-fields.