JPH04274518A - DSP image signal processing program creation device - Google Patents

Abstract

PURPOSE:To enable a user of a digital signal processor(DSP) to easily make desired picture signal processing without having knowledge about simulation and its assembler by only preparing a functional block diagram by combining components by providing a specific program preparing means. CONSTITUTION:A functional block diagram to be used for signal processing is prepared by combining various kinds of components constituting the picture signal processing algorithm executed by a DSP circuit. Then a net list containing the name and number of each component constituting the block diagram and connecting information between each component is prepared. Then each program in which the operation of each kind of component is described in the DSP program language is given to the DSP circuit in a state where the programs are correlated to each other by rearranging the components in accordance with the picture signal processing order based on the net list and adding commands and data required for developing a DSP program language.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] This invention applies to DSP (digital
The present invention relates to an image signal processing system using an image signal processing system (signal processor), and particularly relates to an improvement of an image signal processing program creation device for creating an image signal processing program to be given to the DSP.

0002

[Prior Art] As is well known, in recent years, for example, CAD
(Computer Aided Design), etc., are being actively developed to verify systems that perform algorithm analysis of signal processing. Also, DS
Development of methods for processing image signals using P is also being promoted. Conventionally, algorithms for image signal processing have been verified based on a flowchart as shown in FIG. First, the created algorithm (step S1
) using CAD (step S2), and
The quality is evaluated by the above simulation (step S3) (step S4). If the evaluation result is not good, the algorithm is examined again, and if the evaluation result is good, the operation of the created algorithm is created using the DSP program (
Step S5), and image evaluation is performed on actual hardware (step S6).

FIG. 7 shows the appearance of a general-purpose CAD. The CAD includes a hard disk unit 11 including a CPU (Central Processing Unit) for executing simulations, a memory for storing simulation software, files, etc., a monitor 12, a keyboard 13, a mouse 14, and the like. Here, as shown in FIG. 8, files of a plurality of types of parts (hereinafter referred to as component parts) necessary for configuring an algorithm such as input/output terminals and operators are provided in the CAD.

FIGS. 9 and 10 each show the flowchart shown in FIG. 6 in more detail. first,
In FIG. 9, the user uses the CAD keyboard 13 and mouse 14 to call up a desired component part from the component parts file shown in FIG. By connecting using the editor, as shown in Figure 11(a), monitor 1
Construct a functional block diagram on the screen of 2 (step S7
). Note that FIG. 11(b) is an enlarged view of the functional block diagram configured on the screen of the monitor 12.

Next, the functional block diagram configured as described above is converted into a netlist by netlist conversion (step S8). As shown in Figure 12, this netlist includes each component part name, each component part number automatically generated based on this (hereinafter referred to as ID number), and information on the input/output pins of the component parts. (hereinafter referred to as pin numbers) are described, and numbers (hereinafter referred to as pin numbers) that are automatically generated based on the wiring information connecting each component part in the function block diagram created earlier. The connection information consists of a node number (referred to as a node number) and "connection information" in which the ID number and pin number of each component part connected to each node are described.

[0006] Thereafter, in order to verify the configured functional block diagram on the CAD, the user inputs test data such as the one shown in FIG.
(data described in a binary pattern) is created on CAD (step S9). Then, the created test data and netlist are compiled (step S
10), perform a simulation (step S11)
), verify the functional block diagram.

Next, the processing shown in the flowchart shown in FIG. 10 will be explained. This process, as shown in FIG.
a personal computer 15 equipped with an assembler;
It is executed by image signal processing hardware equipped with a DSP. First, the work on the personal computer 15 will be described. The user uses an assembler to create an assembler program in order to execute the function of the functional block diagram verified using CAD (step S12). Then, a DSP operating language file is created by assembly processing (step S13), and transferred to the DSP hardware by program transfer (step S14), where image signal processing is performed (step S15).

[0008] Here, hardware for image signal processing equipped with the DSP shown in FIG. 14 will be explained. first,
The image signal supplied to the input terminal 16 is converted into a digital signal by an A/D (analog/digital) conversion circuit 17 and continuously sent to a synchronous separation circuit 18 and a DSP circuit 19. The signal synchronously separated by the synchronous separating circuit 18 is sent to a control circuit 20 that includes a program counter. In addition, the D transferred in step S14 of FIG.
The SP operating language program is supplied to and held in a program RAM (read only memory) 21.

Therefore, the program RAM 21 is controlled by the address and timing pulse output from the control circuit 20.
The DSP processing instructions stored in the DSP circuit 19 are read out and supplied to the DSP circuit 19 . The DSP circuit 19 processes the digitized image signal output from the A/D conversion circuit 17 based on the sent command. And DSP circuit 1
The digital image signal processed in step 9 is converted into an analog signal in a D/A (digital/analog) conversion circuit 22,
It is taken out from the output terminal 23.

[0010] However, with the conventional means of creating an image signal processing program to be provided to a DSP, when a user considers an algorithm for image signal processing, the user must first create a program using a signal created by the user on CAD. In order to perform a simulation and then recreate the algorithm in the form of a DSP program before evaluating it,
This requires knowledge of simulation methods and assembler, which poses a problem that is extremely difficult for general users.

[0011]

[Problems to be Solved by the Invention] As described above, with conventional means for creating programs for image signal processing, it is difficult to easily create programs because the user requires knowledge of simulation and assembler. I have a problem.

[0012] The present invention was made in consideration of the above circumstances. By simply configuring a functional block diagram by combining component parts, it is possible to easily create a desired DSP without requiring knowledge of simulation or assembler. An object of the present invention is to provide an extremely good DSP image signal processing program creation device that can create a program for performing image signal processing of a DSP.

[0013]

[Means for Solving the Problems] A DSP image signal processing program creation device according to the present invention is a DSP that performs a predetermined image signal processing operation according to a given program.
It is intended for creating programs to be applied to DSP circuits in image signal processing systems equipped with circuits. and a functional block diagram creating means for creating a functional block diagram for image signal processing by combining various component parts constituting an algorithm for image signal processing executed in the DSP circuit; Based on the created functional block diagram, a network consisting of the name of each component part that makes up the functional block diagram, the part number of each component, and the connection information between each component part is created. Based on the netlist creation means that creates the list and the netlist created by this netlist creation means, component parts are searched in order from those closest to the signal input side, and the component parts are searched in order from those closest to the signal input side. A rearrangement file creation means for creating a rearrangement file in which names and component part numbers are rearranged, a rearrangement file created by this rearrangement file creation means, and a netlist created by a netlist creation means. DSP programming language expansion file creation means adds commands and data necessary for DSP programming language expansion based on the DSP programming language expansion file to create a DSP programming language expansion file; a program creation means for creating a program to be applied to a DSP circuit by associating each component part described in the DSP programming language development file with each program in which the operation of each component part is previously described in a DSP programming language; It is designed to have the following.

[0014]

[Operation] According to the above configuration, the user can automatically create a DSP program by simply combining the component parts and creating a functional block diagram for image signal processing, and can perform simulations. A program to be given to a DSP can be easily created without requiring knowledge of methods or assemblers.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. First, in FIG. 1, the user selects the CAD keyboard 1 as in the conventional example shown in FIG.
3 or the mouse 14 to call up a desired component part from the component parts file shown in FIG. As shown in FIG. 11(b), a functional block diagram is constructed on the screen of the monitor 12 (step S16). Next, the functional block diagram configured in this manner is converted into the netlist shown in FIG. 12 by netlist conversion (step S17).

Then, the component parts in the netlist are rearranged in the order in which they are executed by the DSP program, and a rearrangement file is created (step S18). Creation of this sorted file is performed according to the flowchart shown in FIG. First, when the netlist is read (processing T1), the component part name is searched from the netlist, and the component part name of the input terminal "input" is searched from the netlist.
” (processing 2). Next, find and hold the other component part (in this case, “d
elay”) and holds it (processing T3).

[0017] After that, in process T3, the process of searching for and holding another component part (in this case, "adder") connected to the node number connected to the held part outputs the held part. Terminal component part name “ou
tput" (processing T4). Therefore, in the newly created file, as shown in FIG. 2, the component part names are rearranged in accordance with the order in which the signals flow.

Next, as shown in FIG. 1 again, DSP assembler macro conversion is performed from the created rearranged file and netlist to create an assembler macro file (step S19). This DSP assembler macro conversion adds commands and data necessary for creating a DSP program from the rearranged component parts to the rearrangement file. Specifically, as shown in FIG. 3, a startup command "INCLUDE" at the time of assembler expansion is added in front of the component part names in order from the top of the rearranged file. Also, based on the netlist, node numbers to which each component part is connected are added. In the DSP operating program, the node number is used as it is as a memory address inside the DSP, so it is called an actual argument.

[0019] After that, component programs that correspond one-to-one with each component part prepared on the CAD are expanded in the order of the component parts written on the assembler macro file, and an assembler macro expansion file is created. (Step S20). This component program, as shown in FIG. 4, controls the operation of each component part on the DSP.
This is a program written in assembler language, which is an SP programming language, and includes a statement that declares the component part name and the memory address value of the DSP used in the program as a temporary value (formal argument), and an assembler code that uses the formal argument. It consists of a program.

In this case, actual arguments are passed to formal arguments used in each component program when the assembler macro file is expanded. The assembler macro file is expanded using the command “IN” added in step S19.
CLUDE” is executed by reading each component program. Then, as shown in FIG.
At the beginning of the file expanded as above, a statement to notify the start of the program and a statement to loop are added,
At the end, a jump command statement to the loop and a program termination statement are added.

The assembler macro expansion file created as described above is converted into the DSP operating language by assembly processing to create a DSP operating language file (step S21), and the program is transferred (step S22). ) is transferred to the DSP circuit 19 and subjected to image signal processing (step S23).

Therefore, according to the above embodiment, the user can automatically create a DSP program simply by performing the drawing input process in step S16 and creating a functional block diagram, and the user can automatically create a DSP program using a simulation method or an assembler. A program to be given to a DSP can be easily created without requiring any knowledge.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and can be implemented with various modifications without departing from the gist thereof.

[0024]

[Effects of the Invention] As detailed above, according to the present invention,
By simply configuring a functional block diagram by combining the component parts, you can easily create a program that allows the DSP to perform the desired image signal processing without requiring any knowledge of simulation or assembler. A DSP image signal processing program creation device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a flowchart for explaining one embodiment of the present invention.

FIG. 2 is a flowchart showing details of rearrangement processing in the same embodiment.

FIG. 3 is a diagram showing an assembler macro file of the same embodiment.

FIG. 4 is a diagram showing component programs of the same embodiment.

FIG. 5 is a diagram showing an assembler macro expansion file of the same embodiment.

FIG. 6 is a flowchart showing a conventional program creation procedure.

FIG. 7 is an external view of CAD.

FIG. 8 is a diagram showing a component part file.

FIG. 9 is a flowchart showing detailed procedures for creating a conventional program.

FIG. 10 is a flowchart showing a detailed procedure for creating a conventional program.

FIG. 11 is a diagram showing a functional block diagram created using CAD.

FIG. 12 is a diagram showing a netlist.

FIG. 13 is a diagram showing test data.

FIG. 14 is a block diagram showing an image signal processing system using a DSP.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 11...Hard disk part, 12...Monitor, 13...Keyboard, 14...Mouse, 15...Personal computer, 16...Input terminal, 17...A/D conversion circuit, 18...Synchronization separation circuit, 19...DSP circuit, 20...Control Circuit, 21...
Program RAM, 22...D/A conversion circuit, 23...Output terminal.

Claims (1)

[Claims] 1. An image signal processing program creation device for creating a program to be applied to a DSP circuit of an image signal processing system equipped with a DSP circuit that performs a predetermined image signal processing operation according to a given program, comprising:
a functional block diagram creating means for creating a functional block diagram for image signal processing by combining various component parts constituting an algorithm for image signal processing executed by the DSP circuit; and a functional block diagram creating means for creating a functional block diagram for image signal processing; Based on the functional block diagram, a netlist is created that includes the name of each component part that makes up the functional block diagram, the part number of each component, and the connection information between each component part. Based on the netlist created by this netlist creation means, the component parts are searched in order from those closest to the signal input side, and the component parts are searched in order from those closest to the signal input side, and the component parts are searched in the order of processing of the image signal. A reordering file creation means for creating a reordering file in which part names and component part numbers are rearranged, a reordering file created by the reordering file creation means, and a netlist created by the netlist creation means. a DSP programming language development file creation means that adds commands and data necessary for development of the DSP programming language based on the DSP programming language development file to create a DSP programming language development file; A program that creates a program to be applied to the DSP circuit by associating each component component described in the DSP programming language expansion file with each program in which the operation of each component component is previously described in the DSP programming language. 1. A DSP image signal processing program creation device, comprising: creation means.