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:
Jul. 12, 2005
Filed:
Jul. 30, 2002
Lung-en Cheng, Tainan Hsien, TW;
Lung-En Cheng, Tainan Hsien, TW;
Hanpin Electron Co., Ltd., Tainan, TW;
Abstract
In a sound mixing equipment, an adjusting circuit has reflecting plates joined to a control in opposite directions. The adjusting circuit has a first light emitting diode and a first light transistor disposed to face one of the reflecting plates, and a second light emitting diode and a second light transistor disposed to face other one of the reflecting plates. Distance from the light emitting diodes to the corresponding reflecting plates is changed by means of shifting the control, making the light transistors receive infrared rays reflected by the plates at adjusted distance to have desired amount of electrical currents. Channels and output terminals of the light transistors are connected to input terminals of sound mixing mechanism. Thus, proportion of sound signals of the channels to be mixed is adjusted.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile