TWI453441B - Signal decoding method - Google Patents

Description

Signal decoding method

The present invention relates to digital signal processing, and more particularly to a signal decoding method.

With the advancement of digital technology, such as electronic wafers, liquid crystal display (LCD) image processing chips, Complementary Metal-Oxide Semiconductor (CMOS), and Charge Coupled Device (CCD), etc. Electronic devices for transmitting data have become increasingly popular.

When the R&D personnel develops the above-mentioned electronic device, the logic analyzer is usually used to capture the digital signal output by the electronic device, and the display device displays the digital signal for the developer to analyze the digital signal. In order to determine whether the design of the above electronic products is normal.

In the existing logic analyzers, the technology of interpreting signals is mainly to interpret a data type by a signal, and often there may be more than two types of data at the same time, please refer to Figure 1, when logic analysis When the digital signal P2 captured by the instrument decodes the data values R2 and D2 of two or more data types (Response and Data in the figure) in the same time zone, only one of the data is used in the prior art. The data value R2 of the type (Response in the figure) is the main decoding object, and then the data value of the data type based on R2 is displayed, and the data value D2 of the other data type (Data in the figure) is R2. After the data is interpreted and displayed, the remaining part of the data value D2 will be displayed, so that the data value D2 will be covered by the data value R1 of the main data type, and the details cannot be known.

Therefore, when the developer wants to know the value of the covered data, he must set the data type that was originally covered as the main decoding target, and re-interpret the digital signal P2 captured by the logic analyzer from the beginning ( As shown in Figure 2), you can get the data value D2 you want to know.

However, with the advancement of technology, the digital resources transmitted by the above-mentioned electronic devices are becoming more and more large, and the number of digital signals that the logic analyzer needs to analyze each time is becoming larger and larger, and the above-mentioned conventional use The data decoding method is not only time-consuming, but also increases the workload of the R&D personnel, which in turn makes the comparison and analysis work less effective.

In view of this, the main purpose of the present invention is to provide a signal decoding method capable of interpreting and displaying data values of various data types, thereby improving the efficiency of comparison and analysis by developers.

In order to achieve the above object, the signal decoding method provided by the present invention is used to interpret the signal of the sample to be tested when a logic analyzer captures a signal of the object to be tested; the signal decoding method includes the following Steps: A. loading a decoding means corresponding to the communication protocol of the object to be tested; B. capturing a plurality of signal packets of the object to be tested; C. Interpreting the signal packet captured in step B by using the decoding method selected in step A; D. when step C interprets the data values of two or more different data types in the same time segment, first obtain the interpretation The data value of one of the data types; E. The interpretation of the signal packet selected in step B by the decoding means selected in step A to obtain the data value of another data type; F. simultaneously display all the different interpretations The data type of the data type is on a display device.

According to the above concept, according to the sequence decomposed in step C, the data values of different data types are obtained by interpreting in steps D and E.

According to the above concept, when step C decodes the data value of three or more different data types, in step E, after obtaining the data value of another data type, step E is repeated until the data of all data types is obtained. Value.

According to the above concept, in step F, the data values of different data types are displayed in different display manners.

According to the above concept, the different display modes refer to displaying data values of different data types in different colors.

According to the above concept, in step F, the waveform of the signal packet captured by step B is displayed at the same time.

In this way, through the above-mentioned interpretation and display of the data values of various data types, the interpretation process is not only detailed and fast, but also greatly improves the efficiency of the comparison and analysis of the research and development personnel.

In order that the present invention may be more clearly described, the preferred embodiments are illustrated in the accompanying drawings.

The image signal decoding method provided by the present invention is used to decode and display the signal of the sample to be tested when a logic analyzer captures a signal of the object to be tested; please refer to FIG. 3 to FIG. The signal decoding method includes the following steps:

A. Load the decoding means of the communication protocol corresponding to the object under test. Generally speaking, the communication protocol is stored in a dynamic link library (DLL) corresponding to the image signal generating device in the computer, and the dynamic link database is statically linked to the Microsoft basic category. Dynamic Linking Database for Microsoft Foundation Classes (MFC). In this way, the decoding method of the communication protocol can be obtained by loading the corresponding dynamic link database.

B. Capture a plurality of signal packets P1 of the object to be tested.

C. The signal packet P1 captured in step B is interpreted by the decoding means selected in step A.

D. When step C decodes the data values of two or more different data types in the same time segment, first obtain the data value of one of the data types. For example, when step C decodes the signal packet P1 captured in step B and has the data value of the Response data type and the data data type in the same time zone, the number of data of the Response data type is first interpreted. The value is R1 (see Figure 4).

E. The signal packet P1 captured in step B is reinterpreted by the decoding means selected in step A to obtain the data value of another data type. In this embodiment, this step is to interpret the data value D1 of the Data data type (see FIG. 5).

F. Display the waveform of the signal packet P1 captured in step B, and simultaneously display the data values of all the interpreted different data types on a display device, and display the data values of different data types in different display manners. Referring to FIG. 6, in the embodiment, the data value R1 of the Response data type is displayed in white, and the data value D1 of the Data data type is displayed in gray. Therefore, by implementing the method, the logic can be made. The analyzer simultaneously displays data values of various data types to avoid the use of traditional logic analyzers that can only display a single data type.

In addition, the above description is based on the example of interpreting the data values of the two data types. When the data value of three or more different data types is interpreted in step C, the data type can be interpreted by repeatedly performing step E. Data value.

Furthermore, the above decoding method is to obtain the data values of different data types by sequentially interpreting in steps D and E in the order decomposed according to step C. Through the order of interpretation, directly as the order of interpretation, not only can the situation of signal interpretation be avoided, but also the speed of interpretation can be greatly improved.

In this way, through the signal decoding method described above, the developer can interpret and display the number of data of multiple data types without having to manually perform multiple signal interpretations. Value can not only improve the efficiency of comparison and analysis, but also greatly reduce the workload of R&D personnel.

The above description is only for the preferred embodiments of the present invention, and the equivalent method variations of the present invention and the scope of the patent application are intended to be included in the scope of the present invention.

P1‧‧‧ signal packet

R1, D1‧‧‧ data values

P2‧‧‧ digital signal

R2, D2‧‧‧ data values

1 and FIG. 2 are diagrams showing the interpretation of the conventional signal decoding method; FIG. 3 is a flowchart of the signal decoding method of the present invention; and FIGS. 4 to 6 disclose the decoding process of the signal decoding method of the present invention.

Claims (6)

A signal decoding method is used for interpreting the signal of the object to be tested when a logic analyzer captures a signal of the object to be tested; the signal decoding method comprises the following steps: A. loading corresponding Decoding means of the communication protocol of the object to be tested; B. extracting a plurality of signal packets of the object to be tested; C. interpreting the signal packet captured by step B by using the decoding means selected in step A; D. when step C When the data values of two or more different data types are interpreted in the same time segment, the data values of one of the data types are first interpreted; E. The decoding method selected in step A is used to re-interpret step B. The signal packet is obtained to obtain the data value of another data type; and F. simultaneously displays the data values of all the interpreted different data types on a display device. The signal decoding method according to claim 1, wherein the data values of different data types are obtained by sequentially interpreting in steps D and E in accordance with the sequence decoded in step C. The signal decoding method of claim 1, wherein when the data value of the three different data types is decoded by the step C, in step E, after obtaining the data value of another data type, the step E is repeated until the step E is performed. Interpret the data values for all data types. The signal decoding method according to claim 1, wherein in step F, Different display modes display the data values of different data types. The signal decoding method of claim 4, wherein the different display modes refer to displaying data values of different data types in different colors. The signal decoding method of claim 1, wherein in step F, the waveform of the signal packet captured by step B is displayed at the same time.