Audio trigger devices

• US 6,788,983 B2
• Filed: 02/07/2001
• Issued: 09/07/2004
• Est. Priority Date: 02/07/2001
• Status: Active Grant

• Current Assignee: Hong Kong Polytechnic University
• Original Assignee: Hong Kong Polytechnic University
• Inventors: Zheng, Yong Ping
• Primary Examiner(s): Harvey, Minsun Oh
• Application Number:
  US09/778,040
• Publication Number:
  US 20020106089A1
• Time in Patent Office: 1,308 Days
• Field of Search: 381/61, 381/58, 381/85, 381/77, 700/94, 345/158
• US Class Current: 700/94
• CPC Class Codes: H03G 1/02 Remote control of amplification, tone or bandwidth combined with remote tuning or selection of resonant circuits H03J
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F

Abstract

An audio trigger device has a number of buttons that can be depressed to create different audio signals with 5 different features. The audio signals are used to remotely control a computer running slide presentation software that has an audio channel to collect sound signals. The features of the audio signals are detected by the computer as commands for controlling the progress of the slide presentation by simulating keystrokes, mouse actions, or their combinations for the control commands of the presentation software.

Claims

1. A trigger computer presentation control system comprising:

an audio trigger device having a number of buttons that can be depressed to create different audio signals with different features, and

a computer running a slide presentation software that has an audio channel to collect sound signals, in which the features are detected by the computer as commands for controlling the progress of the slide presentation by simulating keystrokes, mouse actions, and their combinations for the control commands of the presentation software.

2. A trigger computer control system comprising:

laser pointing means, and

audio trigger generating means having a number of buttons, one of which can be depressed to activate the laser pointing means to generate a laser beam for pointing, and others of which can be depressed to activate audio trigger generating means to create audio signals with different features for the computer, in which the signals act as command signals for altering or controlling operation of the computer.

3. An audio trigger control system including:

a microphone for receiving aural presentation sounds of a user,

a main equipment including an amplifying circuit and a loudspeaker,

an audio trigger device generating trigger signals with different features in response to depressing a number of buttons mounted on a surface of the microphone, and

a communication channel connecting the microphone to the main equipment for transmitting the aural presentation and the trigger signals to the main equipment, in which the trigger signals transmitted are detected and act as command signals for altering or controlling operation of the main equipment, including altering or controlling amplification to adjust presentation sound outputs of the loudspeaker.

4. The audio trigger control system according to claim 3, in which the communication channel is a radio channel.