Patent · US Expired

Single or dual message multilevel analog signal recording and playback system containing independently controlled signal storage segments with externally selectable duration capability

US5959876A · kind A · utility

4Cited by
7References
36Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 14, 1998
Grant dateSep 28, 1999
Priority date
Expiry dateJul 14, 2018

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG11C27/005
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

A single chip, single or dual message multilevel analog signal recording and playback system is described. In one embodiment, the system comprises a record circuit, an analog storage array, a playback circuit, and a control circuit that independently controls signal storage segments and duration capability. The record circuit receives an audio signal and generates a filtered signal, which is stored in the analog storage array. The playback circuit is coupled to the storage array for retrieving the stored signal for playback. The system further includes a mixer circuit which receives an auxiliary signal and mixes the auxiliary signal with the stored signal during playback. The control circuit also features a novel audio, visual, and input/output functionality.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.