TWI490780B - Embedded system and accessing data method thereof - Google Patents

Description

Embedded system and its access data method

The present invention relates to an embedded system and a method for accessing the same, and more particularly to an embedded system for an external memory module and a method for accessing the same.

At present, with the rapid development of network communication technology, various embedded systems have gradually become the main tools for people to access data. For example, mobile phones, printers, air conditioners, image sensors, etc. are all embedded systems. Since the image sensor needs to do a series of parameter tests before use, such as signal-to-noise ratio (SNR), pixel linearity, pixel dark current, etc., if it is tested by computerized detection system, there will be a volume. Large, user-operated operations and other shortcomings, so the embedded system that is small in size and can be designed according to user needs to replace the control process. However, the image sensor parameter detection often requires a large amount of memory space for storing image data. For example, when calculating the image sensor noise ratio parameter, the image data is repeatedly captured into the memory space, so that the embedded system memory The volume of the body may be insufficient. In the past, memory management or increased system memory space was used as a solution. Among them, memory management refers to the technology of allocating and using computer memory resources. Its main purpose is how to allocate efficiently and quickly, and release and reclaim memory resources when appropriate; and increase system memory space. The embedded memory module of the embedded system is replaced by another large-capacity embedded memory module. When the control module stores the data in the memory module, it is often stored in a decimal conversion method, so that the number of characters will be Too much to increase the computing time; while the control module reads the data in the memory module, the traditional way is to read all the data, and then grab the required data, which will increase the computing time.

In view of the above problems of the prior art, the object of the present invention is to provide an embedded system and a method for accessing the same to solve the problem of insufficient memory of the embedded system itself.

According to an aspect of the present invention, an embedded system is provided, wherein the embedded system includes a control module and a memory module, and the memory module includes an embedded memory module and an external memory module. The external memory module can be a flash memory or an external hard disk.

According to one aspect of the present invention, a method for storing and reading data by a control module of an embedded system is provided. The control module stores at least one data in a memory module by using a first-order conversion method, wherein The hexadecimal conversion method is a hexadecimal conversion method; the control module reads at least one data into the memory module by the binary conversion method, wherein the binary conversion method is a binary conversion method.

In view of the above, an embedded system in accordance with the present invention may have one or more of the following advantages:

(1) The embedded system can solve the problem of insufficient memory of the embedded system by an external memory module.

(2) The control module of the embedded system can store the data in the memory module by the hexadecimal conversion method, thereby solving the problem that the operation time is increased due to the excessive number of characters in the control module operation.

(3) The control module of the embedded system can be read from the memory module by the binary conversion method, thereby solving the problem that the operation time of the control module is too long.

20‧‧‧ embedded system

200‧‧‧Control Module

201‧‧‧Memory Module

2010‧‧‧Inline Memory Module

2011‧‧‧External Memory Module

S202~S206‧‧‧Steps

1 is an embedded system of the present invention, which includes a functional block diagram of an embodiment of a control module and a memory module; and FIG. 2 is a control module of the present invention stores data in a hexadecimal conversion method. In the memory module, a flow chart of one of the methods for reading data from the memory module by binary conversion method; FIG. 3 is a sequential control method of the control module of the present invention by binary conversion method A flowchart of an operation example of one of the methods of reading data and performing operations; and FIG. 4 is an embodiment of the control module of the present invention for reading data in a memory module by binary conversion method and performing an operation.

Please refer to FIG. 1, which is an embedded system 20 of the present invention. In the figure, the embedded system 20 includes a control module 200 and a memory module 201. The memory module 201 includes an embedded memory module 2010 and an external memory module 2011, wherein the external memory The module 2011 is a flash memory or an external hard disk. The external memory module 2011 can expand the memory of the embedded system 20 to solve the problem of insufficient memory of the embedded system 20 itself.

Referring to FIG. 2, the present invention provides an access method for the embedded system 20, wherein the embedded system includes a control module 200 and a memory module 201. In step S202, the control module 200 stores at least one data in the memory module 201 by using a hexadecimal conversion method. In step S203, the control module 200 compares at least one data into two. The conversion method reads data from the memory module 201. Thus, using the above-described hexadecimal conversion method, the control module 200 has a significant saving effect on the operation time.

The manner in which the control module 200 stores the data in the memory module 201 is conventionally calculated and stored in a decimal conversion method. If the processing data is too large, the operation is increased due to the excessive number of characters. At the time, the control module 200 replaces the traditional decimal conversion method by the hexadecimal conversion method, and stores the data in the memory module 201. For example, if a 2056-bit data is stored in decimal conversion, it will have 4 characters, as shown in the following table:

If it can be stored by the hexadecimal conversion method proposed by the present invention, 2056 bits of data can be converted into 808 bits, and the data will have only 3 characters, as shown in the following table:

So every piece of data will save one character space, and store n data, the festival Saves n character spaces, greatly reducing the computation time.

The control module 200 reads the data from the memory module 201. Traditionally, the control module 200 reads all the data in the memory module 201 and then captures the required data. The present invention proposes that the control module 200 reads the data in the memory module 201 by the binary conversion method. Referring to FIG. 3, in step S204, the control module 200 reads the data in a binary conversion manner and sequentially reads the data. Taking the first, second, third, ..., n data, in step S205, storing the data in the embedded memory module 2010, in step S206, performing the data operation, please refer to FIG. 4, The figure shows an embodiment in which the control module 200 reads the data in the memory module 201 by a binary conversion method and performs an operation. The control module 200 reads the external memory module in a binary conversion method. In 2011, the data is stored in the embedded memory module 2010, and finally the data is calculated. Compared with the conventional reading mode, the present invention proposes a binary conversion method for reading. After capturing the required data, directly reading each data and then doing the operation greatly reduces the computation time.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

20‧‧‧ embedded system

200‧‧‧Control Module

201‧‧‧Memory Module

2010‧‧‧Inline Memory Module

2011‧‧‧External Memory Module

Claims (6)

An embedded system comprising: a memory module connected to the embedded system in an external manner; and a control module connected to the memory module and storing data in a first conversion method, and The second binary conversion method reads the data; wherein the first binary conversion method is a hexadecimal conversion method, and the second binary conversion method is a binary conversion method. The embedded system of claim 1, wherein the memory module is a flash memory or an external hard disk. The embedded system of claim 1, wherein the control module is a central processing unit (CPU). A method for storing and reading data in an embedded system, the system comprising a memory module and a control module, the method comprising: storing, by the control module, the at least one data in a first conversion method In the memory module, and the at least one data is read by the control module from the memory module by using a binary conversion method; wherein the first conversion method is a hexadecimal conversion method, The binary conversion method is a binary conversion method. The method for storing and reading data of the embedded system according to claim 4, wherein the memory module is a flash memory or an external hard disk. Method for storing and reading data of an embedded system as described in claim 4 Wherein the control module is a central processing unit.