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:
Sep. 09, 2014
Filed:
Sep. 28, 2011
Yong-jun Song, Shenzhen, CN;
Chun-fang Xi, Shenzhen, CN;
Yong-Jun Song, Shenzhen, CN;
Chun-Fang Xi, Shenzhen, CN;
Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Shenzhen, CN;
Hon Hai Precisison Industry Co., Ltd., New Taipei, TW;
Abstract
A digital multimeter includes a single chip processor, a sound chip connected to the single chip processor, a signal amplifying circuit, a speaker connected to the signal amplifying circuit, and a power source for providing electrical energy for the digital multimeter. The single chip processor collects high and low level signals, and converts the signals into codes which the sound chip can recognize, and transmits the codes to the sound chip. The sound chip converts the codes into audio signals and transmits the audio signals to the signal amplifying circuit. The signal amplifying circuit amplifies the audio signals and outputs the amplified audio signals to the speaker. The amplified audio signals reports the measurement values of the digital multimeter.