Buffer allocation to repeated information blocks in data...

H - Electricity – 04 – N

Patent

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Details

H04N 7/50 (2006.01) H04L 1/08 (2006.01) H04L 1/16 (2006.01) H04L 1/18 (2006.01) H04L 1/00 (2006.01) H04N 7/24 (2006.01)

Patent

CA 2133107

Apparatus for transmitting and receiving information blocks, particularly video information, is arranged so that on receiving a corrupted information block it stores a first receiver buffer address at which the data block should be stored if subsequently successfully repeated in a later information block. The apparatus keeps track of the time taken to receive a requested repeat information block and on receiving the later information block at the predicted time, and on determining that it is uncorrupted, stores the data in the receiver buffer at the stored buffer address. Such apparatus can allocate received, repeated and non-repeated data blocks to their correct relative positions within the receiver buffer without the need for numbering of the data blocks on transmission giving a consequential reduction in the size of the data blocks being transmitted.

L'invention est un appareil de transmission et de réception de blocs d'informations, particulièrement d'informations vidéo. L'appareil de l'invention est construit de telle façon qu'à la réception d'un bloc d'informations dégradées, il stocke une adresse tampon de réception à laquelle ce bloc de données devrait être stocké s'il devait réapparaître dans un bloc d'informations ultérieur. L'appareil de l'invention note le temps qu'il faut pour recevoir un bloc d'informations redemandé et, quand il reçoit ensuite ce bloc au moment prévu en constatant qu'il n'est pas dégradé, stocke les données dans le tampon de réception à l'adresse tampon stockée. Cet appareil peut affecter les blocs de données reçus, répétés et non répétés à leurs positions relatives exactes dans le tampon de réception sans qu'il soit nécessaire de les numéroter au moment de la transmission, ce qui permet d'en réduire la taille.

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