Abstract: An electronic apparatus stores in a graphics memory a first and a second graphics object. An OSD processor generates a first digital stream which represents the first graphics object. The second graphics object is converted into picture data, for example by a main controller, and these data are written to a picture memory, from which a second digital stream is generated. A mixer combines the first and the second digital stream into a video signal to be displayed.

Abstract: In a process for controlling an audio/video digital decoder, a digital audio/video stream is acquired continuously, the video part of which is composed of an ordered sequence of images, a video decoding of all the images of the sequence is carried out and a video signal based on only part of the images of the sequence is generated without however interrupting the playing of the audio sequence.

Abstract: A video apparatus has a digital decoder having a first memory on an internal bus and linked to an OSD circuit and to a second memory via a main bus. The video apparatus comprises means for realizing a DMA transfer between the first memory and the second memory. A process for controlling such a video apparatus is also described.

Abstract: In a process for controlling an audio/video digital decoder, a digital audio/video stream is acquired continuously, the video part of which is composed of an ordered sequence of images, a video decoding of all the images of the sequence is carried out and a video signal based on only part of the images of the sequence is generated without however interrupting the playing of the audio sequence.

Abstract: An electronic apparatus stores in a graphics memory a first and a second graphics object. An OSD processor generates a first digital stream which represents the first graphics object. The second graphics object is converted into picture data, for example by a main controller, and these data are written to a picture memory, from which a second digital stream is generated. A mixer combines the first and the second digital stream into a video signal to be displayed.

Abstract: In a method for generating a video signal to be displayed applicable in a video decoder according to which, under a freeze command or a channel switching command, the latest frame received is recorded in the still plane of the decoder then this still plane is activated for display and the video plane is deactivated. This enables the elimination of the display of an intermediate black screen usually displayed during the audio/video synchronization phase at the time of a channel hop or continuation after freeze frame.

Abstract: A video apparatus has a digital decoder having a first memory on an internal bus and linked to an OSD circuit and to a second memory via a main bus.

Abstract: A method of optimizing the compression of image data in accordance with at least one compression objective includes an initialization phase including the steps of compressing a plurality of test samples in accordance with at least two different compression conditions, associating with each test sample at least one item of information characteristic of the content of the sample and at least one measurement of the corresponding compression results and establishing at least one reference function associating at least one of the compression objectives and/or at least one compression result measurement and/or at least one of the items of characteristic information for each of the compression conditions.