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System and method for detecting acquisition capability of waveform acquisition device

A collection device and waveform detection technology, which is applied in the direction of pulse shaping, pulse train generator, digital variable display, etc., can solve the problem that the minimum and maximum pulse width waveforms cannot be measured, and achieve the goal of ensuring stability and reliability Effect

Pending Publication Date: 2019-06-28
AMOLOGIC (SHANGHAI) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The current method is to directly measure the SPDIF digital signal waveform through the oscilloscope, but it is impossible to measure the minimum and maximum pulse width waveforms that the software can identify and process the signal waveform

Method used

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  • System and method for detecting acquisition capability of waveform acquisition device
  • System and method for detecting acquisition capability of waveform acquisition device
  • System and method for detecting acquisition capability of waveform acquisition device

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Embodiment Construction

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0038] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0039] The present invention includes a system for detecting the acquisition capability of a waveform acqui...

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Abstract

The invention relates to the technical field of electronic circuits, and particularly relates to a system and a method for detecting acquisition capability of a waveform acquisition device. The methodcomprises: changing the duty ratio of a digital input signal through a digital signal generation circuit, and the waveform change of a digital output signal displayed by a waveform display device isobserved, so that waveform parameters of the digital output signal are collected through collection software until the collection software cannot identify the waveform of the digital output signal. Beneficial effects are as follows: the device is simple in structure; the duty ratio of a digital output signal is changed; observing the waveform change of the digital output signal; waveform parameters of the digital output signals are collected; until the acquisition software cannot identify the waveform of the digital output signal. The method effectively solves the problem that the duty ratio cannot be determined in the window of the collection software, guarantees the stability and reliability of the system, can well know the allowance of the collection software under the condition that the register of the collection software cannot be changed, guarantees the stability of the collection software, and does not need to increase the cost.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a system and method for detecting the acquisition capability of a waveform acquisition device. Background technique [0002] SPDIF is the abbreviation of SONY, PHILIPS digital audio interface. As far as the transmission mode is concerned, SPDIF is divided into two types: output (SPDIF OUT) and input (SPDIF IN). At present, most sound card chips can support SPDIF OUT, but we need to pay attention, not every product will provide digital interface. As far as the transmission carrier is concerned, SPDIF is divided into coaxial and optical fiber. In fact, the signals they can transmit are the same, but the carrier is different, and the interface and connection appearance are also different. However, optical signal transmission is a popular trend in the future. Its main advantage is that it does not need to consider the interface level and impedance issues, and the interf...

Claims

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Application Information

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IPC IPC(8): H03K3/64H03K5/04G01R13/02
Inventor 李远远张坤冯杰
Owner AMOLOGIC (SHANGHAI) CO LTD
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