The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2014
Filed:
Sep. 26, 2011
Shulin Tian, Chengdu, CN;
Peng YE, Chengdu, CN;
Lianping Guo, Chengdu, CN;
Jun Jiang, Chengdu, CN;
Duyu Qiu, Chengdu, CN;
Qinchuan Zhang, Chengdu, CN;
Hao Zeng, Chengdu, CN;
Chuanyun Xiang, Chengdu, CN;
Kuojun Yang, Chengdu, CN;
Shulin Tian, Chengdu, CN;
Peng Ye, Chengdu, CN;
Lianping Guo, Chengdu, CN;
Jun Jiang, Chengdu, CN;
Duyu Qiu, Chengdu, CN;
Qinchuan Zhang, Chengdu, CN;
Hao Zeng, Chengdu, CN;
Chuanyun Xiang, Chengdu, CN;
Kuojun Yang, Chengdu, CN;
University of Electronic Science and Technology of China, Chengdu, Sichuan, CN;
Abstract
A method for adjusting the waveform brightness for a waveform formatted to be displayed on a digital three-dimensional (3D) oscilloscope having M brightness gradation levels to display the waveform on a digital 3D oscilloscope having L brightness gradation levels is includes, creating a ROM in an FPGA and storing a look-up table of screen display brightness value of LCD that is corresponding to the waveform occurrence N(T,A) at the current brightness gradation L. The ROM is divided into 2sub ROMs, each sub ROM has the capacity of 2×d bits. A value of round(p·N(T,A) is assigned to waveform brightness value D(T,A) and is stored correspondingly into the subROMof 2×d bits by ascending order of the b bits of binary data of waveform occurrence N(T,A). In this way, using the b bits of binary data of waveform occurrence N(T,A) as the binary address of the subROM, corresponding waveform brightness value D(T,A) at the current brightness gradation L can be obtained through look-up table in the subROM.