Erasure of DTMF signal transmitted as speech data

Details Erasure of DTMF signal transmitted as speech data Erasure of DTMF signal transmitted as speech data

2006-02-13

2010-12-21

Tsang, Fan (Department: 2614)

Telephonic communications

Supervisory or control line signaling

Signal receiver

C379S067100, C379S283000, C379S351000, C704S212000, C704S222000

Reexamination Certificate

active

07856096

ABSTRACT:
A DTMF signal processing apparatus of the present invention comprises a data divider unit, a DTMF signal component analyzer unit, a weighting processing unit, a buffer, a DTMF signal erasure determination unit, and a DTMF signal erasure processing unit. The data divider unit divides speech data into a plurality of divided speech data, and the DTMF signal component analyzer unit analyzes whether or not the divided speech data has a DTMF signal component. The weighting processing unit applies a weighting value to divided speech data analyzed at this time and stores the resultant speech data in the buffer, and also applies a weighting value to past divided speech data previously stored in the buffer when the result of the analysis indicates that the analyzed divided speech data has the DTMF signal component. The DTMF signal erasure determination unit determines based on the weighting value whether or not to erase the divided speech data stored in the buffer. The DTMF signal erasure processing unit replaces the divided speech data with either mute data or noise data, and delivers the replaced data when the result of the determination indicates an erasure.

REFERENCES:
patent: 5889851 (1999-03-01), Hsieh
patent: 7272136 (2007-09-01), Ahmadi et al.
patent: 2005/0105716 (2005-05-01), Das et al.
patent: 2005/0131678 (2005-06-01), Chandran et al.
patent: 62-31241 (1987-02-01), None
patent: 5-207523 (1993-08-01), None
patent: 9-64963 (1997-03-01), None
patent: 9-327047 (1997-12-01), None
patent: 2000-188611 (2000-07-01), None

Affiliated with

Also associated with

Rating

Erasure of DTMF signal transmitted as speech data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Erasure of DTMF signal transmitted as speech data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Erasure of DTMF signal transmitted as speech data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4219751