JPH0563448A - Waveform generator - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a waveform generator capable of switching output waveforms in an arbitrary order. In a waveform generator capable of sequentially outputting various waveforms, control information of an external control signal and transfer destination address information by it are added to a memory or the like for storing sequence information. A transfer destination address can be input, and a function is provided for selecting transfer destination address information in the memory and external input according to the control information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waveform generator, and more particularly to a waveform generator capable of controlling a waveform sequence by an external signal.

[0002]

2. Description of the Related Art For control by an external signal (trigger) in a conventional waveform generator, a sequence program is started or paused as shown in FIG. 3, or a current output is made as shown in FIG. There are two modes: interrupting the inner waveform element and outputting the next waveform element.

[0003]

In the above-mentioned conventional waveform generator, the next command (element) is generated by the trigger input.
However, it is not possible to move to any waveform element by trigger input. Therefore, there is a problem that the diversification of the generated waveform is considerably limited.

The present invention has been made in view of these problems, and an object thereof is to provide a waveform generator capable of switching output waveforms in an arbitrary order.

[0005]

According to the present invention, in a waveform generator capable of sequentially outputting various kinds of waveforms, a control information of an external control signal and a transition due to the control information are stored in a memory or the like for storing sequence information. You can add destination address information and input the destination address from the outside.
According to the control information, a function of selecting the transfer destination address information in the memory and the external input is provided.

[0006]

By setting the jump destination by an external control signal and allowing the jump destination address to be externally input, the output waveform can be switched in any order.

[0007]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 is a diagram showing the configuration of an embodiment of the waveform generator of the present invention.

In this embodiment, the sequence memory 1
Is element information A that gives the waveform memory address generator 2 an area in which waveform data to be output is stored.
And trigger control information C having a control command by an external trigger
And the destination address D of which address on the sequence memory 1 is to be moved to the external trigger, and the next sequence memory address B of which address is to be moved to when the trigger control is not performed. Is stored.

The address generator 2 gives an address to a waveform memory (not shown) according to the element information A described above. The selector 4 uses the external input control unit 3 and the sequence control unit 6 to select which address of the sequence memory is to be accessed next.

The latch 5 temporarily holds an address given from the outside. The sequence control unit 6 controls the entire sequence. next,
The operation will be described. (1) First, various information A to D is output assuming that a certain address is given to the sequence memory 1 as an initial state. (2) The address generator 2 to which the information A is given sequentially gives the addresses of the memory areas to be output to the waveform memory. (3) During this period, the external input control unit 3 uses the given trigger control information C, for example, the information B if the trigger is not used, and the information D if the trigger jumps to the address designated in the sequence memory, Further, when an address is designated by an external input, a select signal S is sent to the selector 4 so that the information E is selected. (4) When the sequence control unit 6 is watching the address output state in the address generation unit 2 and the memory area to be output is finished and it is time to give the next sequence memory address, (3) The address prepared in 1 is loaded into the sequence memory 1. (5) Further, in the above (3), if the trigger is not input, the select signal S is forcibly transmitted so as to forcibly select the information B. After (6), this operation is repeated.

FIG. 2 is a flowchart showing an operation example. As in step 13, in the present embodiment, when there is a trigger input, it is possible to move to the address designated by the external input.

[0012]

As described above, according to the present invention, a sequence, that is,
You can change the output order of the output waveform elements,
Further, even if the jump destination address is not specified in the sequence program, the jump destination address itself can be given from the outside, so that a more complicated output waveform can be obtained with a simple waveform element.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of an embodiment of a waveform generator of the present invention.

FIG. 2 is a flowchart showing an operation example of the embodiment of FIG.

FIG. 3 is a diagram for explaining an external trigger control function of a conventional example.

FIG. 4 is a diagram for explaining another external trigger control function of the conventional example.

[Explanation of symbols]

 1 Sequence Memory 2 Address Generator 3 External Input Controller 4 Selector 5 Latch 6 Sequence Controller

Claims (1)

[Claims] 1. A sequence memory (1) and a plurality of addresses are received in parallel, a specific address is selected from the plurality of addresses according to an instruction by a select signal (S), and a read address is stored in the sequence memory. , An external input control unit (3) that receives an external trigger and sends the select signal (S) to the selector, and an address of a waveform memory in which waveform data is stored is generated. A waveform memory address generating section (2), a sequence program is stored in the sequence memory (1), and a predetermined address of the waveform data to be output to the waveform memory address generating section. The element information (A) indicating the stored area and the next step when control by an external trigger is not performed Address (B) in the sequence memory, control command information (C) for responding to the external trigger, and the address (D) in the sequence memory to be transferred next when the external trigger is given. Is stored in the selector (4), and the element information (A) is stored in the selector (4).
When the control by the external trigger is not performed, the address (B) in the sequence memory to be transferred next and the sequence memory address (E) given from the outside are input as the plurality of addresses. Further, the external input control unit (3) is provided with control command information (C) for responding to the external trigger, and the external input control unit (3) is configured to perform the control. A waveform generator characterized in that the select signal (S) is given to the selector (4) in accordance with instruction information (C) to perform necessary address selection.