TH22360A - Methods for compatible transmission of signal-type supplementary information. - Google Patents

Abstract

For integration of the 169 format letterbox format into the existing 4: 3 television standard. The visual information of 16: 9 recordings is displayed with black bars on the top and bottom edges of the image. For the full format display on 16: 9 uniforms. Which allows enhanced picture quality to be transmitted in the black bars of a compatible 4: 3 transmission. So that the 16: 9 receiver can decode the TV signal in the correct manner. Proper identification of the signal type type would be desirable. In order to avoid alternation or degradation of the current allocation of the vertical balancing period. It transmits signal-type supplementary information on one half of the first or last other active picture line of the television, which is independent of the picture signal. Or in the area of the black back Porsche, at least one line per frame; hence, it can form a signal identified by a colored burst beginning before and / or ending implicitly after time. And / or by the information signal supplied under the color Or converge with the implied color burst over time:

Claims (2)

1. A method for the transmission of digital supplemental information in a single line of television signals, where such supplementary information includes warm-up information, start-up information and user information in terms of group information. Where on the receiver side, the warm-up information is provided for restoring the clock pulse of the data for the user information with the correct phase, and the start-up information is provided for the determination. Address, user information, as well as for selective detection of the initiation of the unique user information that the packet is transmitted in half of the active visual curve. The first or last of the television signal independent of the video signal and Where the impulse precedes the warm-up information, whose amplitude corresponds to the highest level of the data and the width of which is combined with multiple periods of the data clock cycle, And that, on the receiver side, the half line occupied by data is selected using the impulse that precedes 2. A unique approach to claim No. 1 is that the user's information is transmitted in such a way that all its non-inversion groups and its inversely derived signal form. They are transmitted sequentially, and that, on the receiver side, the corresponding un-inverse waveforms are added (52) to each of the resulting signal patterns for the examination. Catch transmission faults, where the sum of the resulting signals which is not equal to zero indicates a transmission error.