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Decoding circuit applied to multimedia device and related decoding method

A decoding circuit and decoding method technology, applied in electrical components, image communication, selective content distribution, etc., can solve problems such as increased decoding errors, decoding errors, and low performance

Inactive Publication Date: 2020-10-20
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the receiver cannot confirm what the 8-bit system information is before decoding, the receiver may encounter errors when decoding the encoded data of the physical layer signal, and it needs to repeat the decoding many times to decode the correct system information ; In addition, when the signal quality is poor, it is more likely to increase the chance of decoding errors, resulting in a decrease in performance

Method used

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  • Decoding circuit applied to multimedia device and related decoding method
  • Decoding circuit applied to multimedia device and related decoding method
  • Decoding circuit applied to multimedia device and related decoding method

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Embodiment Construction

[0030] Please refer to figure 1 , which is a block diagram of a circuit 100 applied to a multimedia device according to an embodiment of the present invention, wherein in this embodiment, the circuit 100 can be set in a TV or a TV upper box, and conforms to the extended second Specifications for next-generation Digital Video Broadcasting (DVB-S2X) systems. refer to figure 1 The circuit 100 includes a frame synchronization circuit 110 , a frame start section determination circuit 120 , a physical layer signal (PLS) encoded data acquisition circuit 130 and a decoding circuit 140 .

[0031] In the operation of the circuit 100, firstly, the frame synchronization circuit 110 receives a received signal through the antenna, wherein the received signal includes a plurality of frames. figure 2 Shown is a schematic diagram of a frame 200, wherein the frame 200 includes a physical layer header and a plurality of data slots (slots), these data slots are used to store encoded data, and ...

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Abstract

The invention provides a decoding circuit applied to a multimedia device, which is used for decoding an encoded data to generate a system information, and the decoding circuit comprises a plurality ofprocessing circuits and a decision circuit. The plurality of processing circuits are respectively used for processing the encoded data to generate a plurality of processed signals; wherein the plurality of processing circuit modules respectively correspond to a plurality of bit combinations of a portion of information of the system information; and the determining circuit is configured to determine the system information according to the plurality of processed signals.

Description

technical field [0001] The present invention relates to a receiving circuit in a multimedia device, in particular to a decoding circuit and a related decoding method applied to a multimedia device. Background technique [0002] In the current second-generation digital video broadcasting (DVB-S2) system, the receiver will decode the received physical layer signal (Physical Layer Signaling, PLS) coded data to obtain a system information containing 7 bits. The system information mainly includes modulation mode, symbol rate, whether there is preamble data, forward error correction (Forward Error Correction, FEC) data length, etc. In the expanded second-generation digital video broadcasting (DVB-S2X) system currently launched, in addition to the different encoding methods, there is one more system information used to distinguish the second-generation digital video broadcasting and the expanded second-generation DVB-S2X system. Bit of Generation Digital Video Broadcasting. Since...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/4385H04N21/4402
CPCH04N21/4385H04N21/4402
Inventor 李冠洲郑凯文童泰来
Owner MEDIATEK INC