Data access apparatus and method and magnetic resonance device
A data access device and data technology, which is applied in the field of data access devices and magnetic resonance equipment, can solve the problems of unidentifiable column addresses, uncertain memory operation delay, etc., and achieve low cost, less resource occupation, and simple implementation Effect
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no. 1 example
[0040] refer to figure 1 , the data access device according to the first embodiment includes a data transmission network 11 and a cache module 12 . Wherein, the data transmission network 11 includes a storage module, and the delay of the read operation of the storage module is not fixed, such as a DDR storage module or other storage modules with a read operation delay of not fixed. In addition, the data transmission network 11 may also include various appropriate peripheral circuits used in cooperation with the storage module, such as read and write circuits.
[0041] Furthermore, the storage module can store a plurality of data through a write operation. For example, the write data, write address and write valid signal may be transmitted to the storage module, so that the storage module writes the write data into the corresponding address. Wherein, the width of the written data may be consistent with the width of the column data interface of the storage module, that is, the...
no. 2 example
[0052] refer to figure 2 , the data access device according to the second embodiment includes a storage module 21 , a FIFO memory 22 and a selector 23 . The data access device can be used in a multi-channel nuclear magnetic resonance spectrometer, such as a multi-channel nuclear magnetic resonance spectrometer in magnetic resonance equipment, to realize read and write operations of functional data of multiple channels. Wherein, the storage module 21 may be a DDR memory, or other storage modules whose data transmission delay is not fixed.
[0053] The functional data of each channel of the multi-channel nuclear magnetic resonance spectrometer is written into the corresponding address of the storage module through the selector.
[0054] Furthermore, in the write operation, the row address can be used to distinguish different channels, and the column address can be used to distinguish different functional data in each channel. For example, one channel can correspond to one row...
no. 3 example
[0061] refer to image 3 , the data access method according to the third embodiment includes the following steps:
[0062] Step S31, storing data, and writing the data into a preset address of the storage module;
[0063] Step S32, outputting row data and a feedback signal according to the row address of the target data in response to the received read command for reading the target data;
[0064] Step S33, cache the column address information in response to the read command;
[0065] Step S34, outputting the cached column address information in response to the feedback signal;
[0066] Step S35, parsing the target data from the row data according to the column address information.
[0067] As a non-limiting example, the column addresses can be buffered and output in a first-in-first-out manner using various appropriate buffer modules, such as FIFO memory, but not limited thereto.
[0068] For more detailed information about the method, please refer to the relevant descrip...
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