Browse Prior Art Database

Complex Multi-Function Slider Control

IP.com Disclosure Number: IPCOM000114168D
Original Publication Date: 1994-Nov-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 76K

Publishing Venue

IBM

Related People

Brinson, KO: AUTHOR [+2]

Abstract

A slider control for a windowing environment is disclosed that may be used to control complex multi-function parameters.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 52% of the total text.

Complex Multi-Function Slider Control

      A slider control for a windowing environment is disclosed that
may be used to control complex multi-function parameters.

      Fig. 1 represents a slider commonly used in a computer
windowing environment.  The user manipulates a mouse to move the
slider up and down (or left and right) affecting the represented
parameter between some Minimum and Maximum value.

      Consider a complex multimedia environment where an audio
amplifier has 3-stage amplification between audio-in and audio-out:
  Audio-In ===> Attenuation ===> Volume ===> Gain ===> Audio-Out

      In this case, the volume adjustment is a complex mathematical
relationship between the following parameters:
  o  Attenuation: the reduction in gain of the audio signal by a
      limiting circuit prior to the standard audio amplifier.  This
      reduction is normally 0 (no effect) but may be increased to
      reduce the volume to a very low output volume.
  o  Volume: the amplification of the audio signal by the standard
      audio amplifier.  This is the typical audio volume controlling
      element in a conventional audio system.
  o  Gain: the amplification of the audio signal by an adjustment of
      the signal at the final output stage.  This Gain is normally 1
      (that is, no effect) but may go higher if the user wants a very
      high output volume.

Several cases are considered:
  o  In most situations, Gain = 1, Attenuation = 0, and Volume is
      adjusted as required.
  o  Where increased volume is desired,  Volume = Maximum,
Attenuation
      = 0, and Gain is adjusted as required.
  o  Where a very low volume is desired, Volume = Minimum, Gain = 1,
      and Attenuation is adjusted as required.

      Using conventional slide...