Winbond Electronics Corporation

Windbond Electronics Corp.

Information Storage Devices, Inc.

Carl R Palmer

Aditya Raina

Peter J Holzmann

Lawrence D Engh

Oliver Chihkuang Kao

Geoffrey Bruce Jackson

Saleel V Awsare

Hagop A Nazarian

Ming-Bing Chang

Bruce O Jordan

Hung-Chuan Pai

Peter E Gordon

A multilevel analog recording and playback system is described. The analog recording and playback system provides a variety of analog processing functions to enhance system level integration. The analog recording and playback system is an fully configurable integrated device that includes a plurality of signal paths, a microphone automatic gain control ('AGC') circuit, volume control and filtering circuit, speaker driver circuit, gain selectable analog input, auxiliary input and output paths, configurable summation amplifiers having mixing features, multilevel analog memory storage array, and user selectable programming duration.

Multiple message multilevel analog signal recording and playback system containing configurable analog processing functions

A multilevel analog recording and playback system is described. An analog processing circuit processes analog data. A storage circuit includes a non-volatile memory array, a switching circuit, and a communication interface. The non-volatile memory array stores analog and digital data. The switching circuit transfers the analog and digital data to and from the memory array. The communication interface allows a processor to exchange information with the device.

Multiple message multilevel analog signal recording and playback system having memory array configurable for analog and digital storage and serial communication

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.

Single or dual message multilevel analog signal recording and playback

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Los Gatos, CA, United States of America

Carl R Palmer