TH18963B - "Data word indicator in the system for sending the data set" - Google Patents

Abstract

In digital television signal processing systems, a packet signature (PAF) signal is inserted into the MPEG-compliant bit stream to indicate the presence of a group of images (GOP). Will be before the code word that starts the image. For the "I" picture frame, which is the beginning of the GOP, the dataset follows this structure when the PAF part that appears will end because GOP usually begins at the edge of the period of that series. May cause the dataset to be shortened to less than the specified number of code words. Necessary to complete the dataset. The last word of each signal pack is designed. To facilitate the integration of a sequence of data sets into the signal headers. Incomplete dataset Will be filled with zero words (Zero bit) to complete that dataset with word count. As defined

Claims (8)

1.1. (Fig. 4) for generating the last word indicator signal that Indicates the last word of that number of unpredictable data words contained in the dataset; and A second (15) processing path that responds to the said dataset and connects to the last-word viewer signal to generate the transmitted data set as the matching data. 2. Equipment according to claim 1, which the last word indicator signal is related to Scope of the dataset Dataset moment margin 3. Equipment according to claim 1 also includes A path (15,76 (Fig. 17)) to fill such SHORT dataset with a zero term. As needed in response to the last word viewer signal so that the sent data set, the Go into such a set Will show the number of words as specified 4. Device according to claim 1, in which the code word that initiates the image will work with each such group of images, and the said last-word viewer signals will work with the dataset preceding the code word at Start the image above 5. Device according to claim 4, where such data stream contains MPEG-compliant code words that begin with the image. 6. Device according to claim 1, the second (15) of the aforementioned processing method, is combined with a path (78 (Fig. 17)) for combining the dataset with the headers to form a data set Each set of such signals 7. A device for processing data streams that use the MPEG standard that represents images that Including a group of pictures And the code word that initiates an image associated with each group of such images. The first processing method that responds to the data stream for forming the word of the data. A variable-length stream to a fixed-length dataset. Which the data set will It consists of a certain number of words that change unpredictably. The path for generating the last character signal is related to the last information word of the The number of such unpredictable words in the series preceding the code word that begins the image and A second processing path that responds to that dataset. And connect the indicator signal The last word to create a data set is sent that is the matched data. 8. Equipment according to Clause 7 and in addition to the network. Correct forward tolerance (FEC) for processing the said outgoing dataset.