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Hologram recording apparatus, hologram reconstructing apparatus and hologram recording method

A technology for recording equipment and recording methods, which is applied in the field of communication systems and can solve problems such as inefficiency

Inactive Publication Date: 2009-01-21
MEDIATEK INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The 8:12 balanced barcode has an encoding rate of 3 / 4, and the encoding rates of the 6:8 balanced blockcode and the 9:12 pseudo-balanced blockcode are relatively inefficient

Method used

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  • Hologram recording apparatus, hologram reconstructing apparatus and hologram recording method
  • Hologram recording apparatus, hologram reconstructing apparatus and hologram recording method
  • Hologram recording apparatus, hologram reconstructing apparatus and hologram recording method

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Embodiment Construction

[0030] 1 shows a block diagram of a hologram (hologram) data storage system according to an embodiment of the present invention, including an ECC encoder 100, a modulation unit 102, a pre-encoder 104, an HDS channel 120, an equalization and detection unit 140, and a channel estimation unit. Measurement unit 142, demodulation unit 144, and ECC decoder 146. The ECC encoder 100 is coupled to the modulation unit 102 , the pre-encoder 104 , the HDS channel 120 , the equalization and detection unit 140 and the channel estimation unit 142 , the demodulation unit 144 , and finally coupled to the ECC decoder 146 .

[0031] ECC encoder 100 receives 1-dimensional (1-dimensional, 1D) data stream D in to the 1D data stream D in By adding parity bit (parity bit) for error correction code (error correction code, ECC) encoding, so that the data stream D in Data integrity can be maintained in environments with noisy channels and unreliable storage media. The modulation unit 102 then obtains...

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Abstract

Hologram recording and reconstruction apparatuses and method thereof are provided. The hologram recording apparatus comprises a laser source, a spatial light modulator, and a Fourier lens. The laser source provides a coherent light beam. The spatial light modulator receives m-bits data to only determine a (pxq) block comprising ON-pixels less than OFF-pixels, and receives the coherent light beam to modulate with the (pxq) block to generate the signal beam. The Fourier lens focuses the signal beam on the hologram recording medium, so that when the focused signal beam and a focused reference beam is modulated together, the hologram data is generated to be recorded on the hologram recording medium.

Description

technical field [0001] The present invention relates to a communication system, in particular to a method for zooming input data and a mobile device in the communication system, in particular to a hologram recording device, a hologram reconstruction device, and a hologram recording method. Background technique [0002] Hologram data storage system (Hologram Data Storage, HDS) provides a promising next-generation digital data storage system, which has high storage density and each HDS disc can store more than 200GB of data at a data transfer rate of more than 160Mb / sec. The HDS system is a page-based system that encodes information in a 2-dimensional (2-dimensional, 2D) format, and records encoded data in a 3-dimensional (3-dimensional, 3D) space of the HDS storage system. The HDS stores The system consists of photorefractive substances. [0003] Typically, HDS data is encoded in a 2-dimensional format for recording on HDS discs using a 6:8 balanced block code and an 8:12 ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B7/0065G03H1/12G03H1/22
CPCG11B2220/2504G11B2020/1442G11B7/0065G11B20/10009
Inventor 陈季昀阙志达
Owner MEDIATEK INC
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