Invention Grant
US08641197B2 Acoustical receiver and pen transcription system adapted for rejecting virtual pen images
有权
适用于拒绝虚拟笔图像的声学接收器和笔转录系统
- Patent Title: Acoustical receiver and pen transcription system adapted for rejecting virtual pen images
- Patent Title (中): 适用于拒绝虚拟笔图像的声学接收器和笔转录系统
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Application No.: US13336553Application Date: 2011-12-23
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Publication No.: US08641197B2Publication Date: 2014-02-04
- Inventor: Yao Ding
- Applicant: Yao Ding
- Applicant Address: US CA San Carlos
- Assignee: Luidia Inc.
- Current Assignee: Luidia Inc.
- Current Assignee Address: US CA San Carlos
- Agency: Inventek
- Agent Dov Rosenfeld
- Main IPC: G03B21/00
- IPC: G03B21/00 ; G03B31/00 ; G01S3/80 ; G01S5/18 ; G08B3/02 ; G06F3/033 ; G06F3/041 ; G06F3/043 ; G06K11/06 ; G08C21/00 ; H04B1/06 ; H05K5/00
Abstract:
An acoustical receiver for detecting an acoustical signal characterized by a wavelength and a pen transcription system utilizing the same are disclosed. The receiver includes a detector that generates an electrical signal in response to acoustical signals in a predetermined frequency range including that wavelength, a housing surrounding the detector, and a receiving horn. The housing has a housing aperture having a maximum dimension less than the acoustical signal wavelength. The receiving horn has a first opening that is adjacent to the housing aperture and a second aperture having a dimension that is greater than the acoustical signal wavelength.
Public/Granted literature
- US20130162953A1 Acoustical Receiver and Pen Transcription System Adapted for Rejecting Virtual Pen Images Public/Granted day:2013-06-27
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