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Memory control method for time deinterleaving in DMB receiver

A storage and de-interleaving technology, which is applied to broadcast receiving circuits, storage systems, and broadcast broadcasting, etc., can solve the problems of ineffective use of storage, idleness, etc.

Inactive Publication Date: 2005-10-12
LG ELECTRONICS INC
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Problems solved by technology

[0039] However, in the case of memory for time interleaving, during 16 frames, only the shaded part of Fig. 2 is used according to the bit-reversal standard of Fig. 3, while the remaining part is free
Therefore, the memory cannot be used effectively

Method used

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  • Memory control method for time deinterleaving in DMB receiver
  • Memory control method for time deinterleaving in DMB receiver
  • Memory control method for time deinterleaving in DMB receiver

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Embodiment Construction

[0062] Reference will now be made in detail to the preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers will be used throughout the drawings to refer to the same or like parts.

[0063] FIG. 4 shows a memory structure for time deinterleaving in a DMB receiver according to an embodiment of the present invention. In FIG. 4 , cells of a memory whose size changes according to the value of "i" are defined as paragraphs as shown in FIG. 3 .

[0064] In the prior art, when sampling data of each frame (i=0 to i=15) needs to be stored, a memory for storing 256 (=16×16) sampling data is usually required.

[0065] However, only memory for storing 120 sample data (segment 0 of size 15 to segment 14 of size 8) is required in the present invention.

[0066] Therefore, the memory size required for temporal deinterleaving is reduced by 53%. For example, segment 0 stores 15 sample data in the sh...

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Abstract

Provided is a method for controlling a memory for time deinterleaving in a DMB receive by using byte addressing. The memory control method includes the steps of constructing the memory by the several segments so as to store only sample data used for actual time deinterleaving during a time period corresponding to M+1 frames from a time point r through a time point r+M; storing a plurality of sample data at one memory address by accessing the memory on a segment basis through byte addressing; and generating a byte-based memory address according to a time deinterleaving rule determined by the i value, and reading one of the sample data stored at the memory address and masking and another sample data stored at the memory address according to what order sample data is to be read from the memory address, thereby making it possible to greatly reduce the complexity of a memory address decoder in the memory.

Description

[0001] This application claims the benefit of Korean Application No. 10-2004-0024533 filed April 9, 2004, which is hereby incorporated by reference in its entirety. technical field [0002] The present invention relates to mobile broadcast receivers, and more particularly to a memory control method for applying byte addressing to time deinterleaving of memory access in a DMB receiver. Background technique [0003] Recently, digital audio equipment providing high-quality sound, such as CD and DVD players, has become popular, and thus consumers have increasingly demanded and demanded to provide digital broadcasting requiring high-quality sound. Accordingly, in order to overcome the limitation of sound quality in currently provided frequency modulation (FM) broadcasting, digital audio broadcasting (DAB) has been carried out in Europe, Canada, the United States, and many other countries. Provides amplitude modulation (AM) broadcasting or frequency modulation (FM) broadcasting, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/015H04H40/18
CPCH04H40/18H03M13/2782H03M13/276H04L27/2647H04L1/0054H04H20/426H03M13/2785H03M13/2732H04L1/0071A63C17/062
Inventor 辛钟雄姜益善
Owner LG ELECTRONICS INC
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