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Data acquisition method and device

A data acquisition and data technology, applied in the direction of electrical digital data processing, instruments, etc., can solve the problems of data transmission speed reduction, system performance degradation, etc.

Inactive Publication Date: 2011-03-30
ACTIONS ZHUHAI TECH CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lowering the clock frequency will result in lower data transmission speed and lower system performance.

Method used

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  • Data acquisition method and device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] Embodiment 1 of the present invention provides a data collection method, such as Figure 4 shown, including:

[0069] Step S401, using N clocks with period T to collect received data signals.

[0070] Among them, N is an integer satisfying N≥2; and the clock i in the N clocks delays the clock 1 in the N clocks, and the delay is w i-1 , i respectively take an integer satisfying 1≤i≤N; by the corresponding time of N clocks jumping in the same direction, one cycle of the clock is divided into N intervals [w i-1 ,w i ].

[0071] Step S402, according to the collection results of the data signal by N clocks, determine the interval [w j-1 ,w j ], j is an integer satisfying 1≤j≤N.

[0072] Step S403, according to the determined interval [w j-1 ,w j ], determine that the clock whose delay of delay clock j is W is the acquisition clock; among them, Y+w j -w j-1 ≤W≤T-X, X is the minimum value of the hold time that needs to be satisfied during data collection, and Y is th...

Embodiment 2

[0112] Embodiment 2 of the present invention also provides a data collection method, such as Figure 7 shown, including:

[0113] Step S701 , collecting N data signals with a collection clock whose period is T.

[0114] Among them, N is an integer satisfying N≥2; and the data signal 1 in the N data signals is the received data signal; the data signal i in the N data signals is the delayed data signal 1w i-1 For the generated data signals, i takes integers satisfying 1≤i≤N respectively; N delays w corresponding to N data signals i-1 , divide the acquisition clock cycle into N intervals [w i-1 ,w i ].

[0115] Step S702, according to the collection results of the N data signals by the collection clock, determine the interval [w j-1 ,w j ]; j is an integer satisfying 1≤j≤N.

[0116] Step S703, according to the determined interval [w j-1 ,w j ], it is determined that the data whose delay time is W is the collected data; where, Y-w j-1 ≤W≤T-X-w j or T+Y-w j-1≤W≤2T-X-w ...

Embodiment 3

[0160] Based on the same inventive concept, according to the data collection method provided by the first embodiment of the present invention, correspondingly, the third embodiment of the present invention also provides a data collection device, the schematic diagram of which is as follows Figure 10 shown, including:

[0161] The first collection unit 1001 is used to collect the received data signal with N clocks with a period of T; wherein, N is an integer satisfying N≥2; and clock i in the N clocks is delayed by clock 1 in the N clocks delay is w i-1 , i respectively take an integer satisfying 1≤i≤N; by the corresponding time of N clocks jumping in the same direction, one cycle of the clock is divided into N intervals [w i-1 ,w i ];

[0162] The interval determination unit 1002 is used to determine the interval [w] where the jump time of the data signal is located according to the collection results of the data signal by N clocks j-1 ,w j ]; j is an integer satisfying ...

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Abstract

The invention discloses data acquisition method and device. The method comprises the following steps of: dividing the cycle of a clock into N intervals; determining the interval of the leaping time of a data signal according to the acquisition result of N clocks, including the current clock, to the data signal; determining an acquisition clock according to the determined interval; and acquiring received data by using the determined acquisition clock. The data acquisition method of the embodiment of the invention can also comprises the following steps of: determining the interval of the leaping time of the data signal according to the acquisition result of the clock to N data signals, including the data signal; determining acquired data according to the determined interval; and acquiring the determined acquired data by using the clock. The method and device provided in the invention can avoid failing to reach requirements on establishing time and holding time during data acquisition and improve stability under the condition of not reducing data transmission speed.

Description

technical field [0001] The invention relates to the field of data collection, in particular to a data collection method and device. Background technique [0002] At present, when performing data interaction between the master device and the slave device (such as a memory card, etc.), the data interaction diagram is as follows figure 1 shown. When the master device writes the stored data into the slave device, the master device uses the output clock to drive the data output to the slave device, and at the same time outputs the synchronous clock or the synchronization signal generated using the synchronous clock to the slave device, and the slave device uses the received synchronous clock or synchronous Signal acquisition and received data; when the master device reads the data stored by the slave device, the master device first outputs a synchronous clock or a synchronous signal generated using a synchronous clock to the slave device, and the slave device uses the received s...

Claims

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Application Information

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IPC IPC(8): G06F13/38
Inventor 马义方
Owner ACTIONS ZHUHAI TECH CO
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