HANDSFREE CIRCUIT FOR TELEPHONE INSTRUMENT

Patent №

US 4,497,980

Granted

1985-02-05

Filed 1983

Owner

ITT CORPORATION

Lab

AI components

1

speech

Assignment

Recorded

Dataset

AIPD

2023_r1 edition

Application

06505428

A handsfree or loudspeaking telephone circuit employing loudest speaker comparison for controlling the direction of transmission of speech signals. The circuit employs the speech network for the handset to provide gain and hybrid functions. The circuit contains logic for controlling the switching between handset operation, handsfree operation and call announcing operation.

SpeechH04M 1/6033H04M 9/10

AI classification

Speech0.62
Natural language0.02
Machine learning0.00
Knowledge representation0.00
Evolutionary computation0.00
Vision0.00
Planning0.00
AI hardware0.00

Ownership

ITT CORPORATION

assignment · 41430715

Assignors

GORMAN, PATRICK R., STOTTLEMYER, WILLIAM O.

On an employer assignment, the assignors are typically the inventors.

© 2026 NYSGPT2525 LLC