Contactless volume control device with adjustable gain and multi-output

• US 9,148,102 B2
• Filed: 12/06/2012
• Issued: 09/29/2015
• Est. Priority Date: 12/06/2012
• Status: Active Grant

• Current Assignee: National Chung-Shan Institute of Science and Technology
• Original Assignee: Chung-Shan Institute of Science & Technology Armaments Bureau MND (Government of The Republic of China)
• Inventors: Wu, Ruh-Hua
• Primary Examiner(s): Sniezek, Andrew L
• Application Number:
  US13/707,576
• Publication Number:
  US 20140161284A1
• Time in Patent Office: 1,027 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H03G 1/0088 using discontinuously variable devices, e.g. switch-operated
• CPC Class Codes: H03G 3/001 Digital control of analog signals
• CPC Class Codes: H03G 3/04 in untuned amplifiers
• CPC Class Codes: H03G 3/32 the control being dependent upon ambient noise level or sound level

Abstract

A contactless volume control device with adjustable gain and multi-output is configured as a contactless structure with a magnetic slider and a plurality of magnet sensors. The magnetic field of the magnetic slider is sensed by the plurality of magnet sensors to generate a plurality of sensed signals, which allows an output module to provide a data table to show the position of the magnetic slider and the corresponding output voltage thereof according to the sensed signals. Furthermore, the output module is capable of storing multiple variable data to produce different outputs so as to achieve the objective of gain adjusting. Additionally, a processing unit built in the output module has a plurality of output ends so as to output multiple signals. And the magnetic slider and the plurality of magnet sensors have advantages of simple structure, easy manufacture and low cost.

Claims

1. A contactless volume control device with adjustable gain and multi-output, comprising:

a magnetic slider for generating a magnetic field;

a rail defined to allow the magnetic slider to move therealong;

a plurality of magnetic sensor modules provided along the rail for sensing the magnetic field to produce a plurality of signals; and

an output module including a processing unit and a filter unit, wherein the output module is used to receive and process the plurality of signals to produce at least one output signal to an audio device,

wherein the processing unit loads in multiple matrix data tables at the same time for signal processing, to achieve variable output and multi-output according to an output number of the processing unit, and

a number of the plurality of magnetic sensor modules and length of the slider are varied according to demands.

2. The contactless volume control device with adjustable gain and multi-output as claimed in claim 1, wherein the plurality of magnetic sensor modules are Hall elements.

3. The contactless volume control device with adjustable gain and multi-output as claimed in claim 1, wherein the processing unit loads in at least one set of matrix data table for signal processing.

4. The contactless volume control device with adjustable gain and multi-output as claimed in claim 3, wherein the signal processing is comparing the plurality of signals to the matrix data tables so as to produce the at least one output signal.