Multi-format data transmission system

A data transmission system and format data technology, applied in the field of aerospace remote sensors, can solve the problems of inability to adapt to different formats of data transmission and application, reliability decline, cost increase, etc., to reduce the number of interface chips, improve reliability, and reduce costs. Effect

Active Publication Date: 2014-03-26
BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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Problems solved by technology

At present, the data format transmitted by LVDS is usually multi-bit parallel, which requires the use of a large number of cables and interface chips. Many data transmission interfaces also require primary and backup da

Method used

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Embodiment Construction

[0021] Such as figure 1 Shown is a schematic structural diagram of the multi-format data transmission system of the present invention, including a clock selection controller, a parallel-to-serial conversion controller, a data splicing module, a data selection controller, and a data transmission circuit; the clock selection controller is used for different data output formats Next, the clock signal is selected and output, and the applied clock signal is selected according to the instruction; the parallel-serial conversion controller includes an 8-bit parallel-serial conversion unit, a 10-bit parallel-serial conversion unit and a 14-bit parallel-serial conversion unit, which are used to parallelize data with different bit widths. Serial conversion, the 8-bit parallel-serial conversion unit is used to convert application data and auxiliary data from 8-bit parallel to 1-bit serial, and the 10-bit parallel-serial conversion unit is used to convert image data from 10-bit parallel to ...

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Abstract

The invention relates to a multi-format data transmission system which comprises a clock selection controller, a parallel/serial conversion module, a data splicing module, a data selection controller and a data transmission circuit. The clock selection controller selectively outputs clock signals in different data output formats, and selects applied clock signals according to instruction; the parallel/serial conversion module comprises a 8bit parallel/serial conversion unit, a 10bit parallel/serial conversion unit and a 14bit parallel/serial conversion unit, and carries out different bit widths of parallel/serial conversion on data; and the data transmission circuit outputs different formats of data in correspondence to clock and synchronization signals to the next level of circuit. The multi-format data transmission system uses the same interface to send different formats of serial data, meets application requirement of multi-format data transmission, effectively improves the flexibility and data rate of data transmission, decreases the number of application interface chips and the number of connecting signals, saves the cost, and improves the reliability of data transmission.

Description

technical field [0001] The invention belongs to the technical field of aerospace remote sensors, and relates to a multi-format data transmission system, which can be used for a data transmission interface of an aerospace camera video electronic system. Background technique [0002] With the continuous development of remote sensing technology, the types and quantities of remote sensing cameras are constantly increasing, and the types and quantities of CCDs used are also increasing. While the performance of remote sensing cameras continues to improve, the requirements for their data transmission rate and data volume of transmission channels are also getting higher and higher. Usually, the data transmission interface of the remote sensing camera adopts LVDS signal. Compared with the traditional single-ended signal transmission, LVDS signal has higher transmission capacity. At present, the data format transmitted by LVDS is usually multi-bit parallel, which requires the use of ...

Claims

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Application Information

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IPC IPC(8): H04N21/643H04L25/02H04L29/06
Inventor 王鹏程芸刘琦马飞
Owner BEIJING RES INST OF SPATIAL MECHANICAL & ELECTRICAL TECH
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