FAST LAST DIGIT DETECTION OF A DIALED TELEPHONE NUMBER

Patent №

US 5,422,945

Granted

1995-06-06

Filed 1993

Owner

AMERICAN EXPRESS COMPANY

+2 more

Lab

AI components

2

speech · hardware

Assignment

Recorded

Dataset

AIPD

2023_r1 edition

Application

08092756

A method and system for efficiently recognizing the last digit of a computer-dialed DTMF telephone number. The actual gaps between a number of first-dialed successive digits are compared with a standard gap exhibited during computer dialing to determine whether the dialing in progress is manual or automatic. As dialing proceeds, the absence of a digit for a preset time indicates that dialing has been completed. The preset time is set to a small value if it is determined that computer dialing is in progress.

AI classification

AI hardware0.93
Speech0.74
Natural language0.13
Knowledge representation0.01
Vision0.01
Evolutionary computation0.00
Machine learning0.00
Planning0.00

Ownership

AMERICAN EXPRESS COMPANY

assignment · 66580047

AMERICAN EXPRESS TRAVEL RELATED SERVICES COMPANY, INC.

assignment · 173250391

STARGAZER SOFTWARE, LIMITED LIABILITY COMPANY

assignment · 190470594

Assignors

WYATT, JERRY

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

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