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Raw mode for vertical blanking internval (VBI) data

A vertical blanking interval and data technology, applied in the field of communication systems, can solve the problem of not showing VBI data FIFO130 control signaling, etc.

Inactive Publication Date: 2009-01-28
THOMSON LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It should be noted that the control signaling provided to the VBI data FIFO 130 is not shown in FIG. 1 for simplicity

Method used

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  • Raw mode for vertical blanking internval (VBI) data
  • Raw mode for vertical blanking internval (VBI) data
  • Raw mode for vertical blanking internval (VBI) data

Examples

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Embodiment Construction

[0016] Except for the inventive concept, the elements shown in the drawings are well-known and will not be described in detail. In addition, it is assumed that you are familiar with television broadcasting and receivers, and will not be described in detail here. For example, in addition to the inventive concept, it is assumed that you are familiar with current and proposed recommended TV standards, such as NTSC (National Television System Committee), PAL (Phase Alternating Line), SECAM (Sequential Transmission and Storage Color Television System), ATSC (Advanced Television System Committee) and VBI coding. Also, in addition to the inventive concept, it is assumed that you are familiar with transmission concepts such as 8-level vestigial sideband (8-VSB), quadrature amplitude modulation (QAM), and receiver components such as radio frequency (RF) front-ends or low-noise blocks such as , Tuner and demodulator receiver part. Similarly, formatting and encoding methods (such as the Movi...

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PUM

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Abstract

A vertical blanking interval (VBI) encoder for providing VBI encoded data supports a 'RAW mode' of operation. In particular, the VBI encoder comprises a first FIFO (first-in, first-out) buffer for providing service data to be VBI encoded, and a second FIFO for specifying VBI format data.

Description

Technical field [0001] The present invention relates generally to a communication system, and more specifically to a television (TV) system, such as a TV, set-top box (cable, satellite), and the like. Background technique [0002] As is known in the art, television systems can transmit additional (or service) data during the vertical blanking interval (VBI). VBI is spread over 40 horizontal rows. Typically, a VBI encoder is used to encode any service data on a specified line according to a specific format (or standard) such as widescreen signaling (WSS), global teletext system (WST), closed captioning, etc. [0003] Turning now to Figure 1, a prior art VBI encoder is shown. The VBI encoder 150 includes: one or more registers 115; a memory 130 (for example, first-in-first-out (FIFO) 130) for storing service data to be encoded by the VBI (also referred to as VBI data here); and VBI The modulator 140 is used to provide VBI-encoded data 141. As known in the art, the VBI modulator 140...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/088H04N7/035
CPCH04N7/088H04N7/035H04N7/087
Inventor 阿米特·K·辛托马斯·E·霍兰德马修·J·瓦霍斯克
Owner THOMSON LICENSING SA