Process for separating and characterizing spoken...

Details Process for separating and characterizing spoken... Process for separating and characterizing spoken...

1999-03-18

2001-05-08

Ŝmits, T{overscore (a)}livaldis I. (Department: 2641)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Application

C704S215000, C455S414200, C379S088130

Reexamination Certificate

active

06230134

ABSTRACT:

BACKGROUND INFORMATION
Methods of transmitting and selectively reproducing announcements via the radio data system (RDS) are known. For transmitting messages via the mobile wireless network, the GSM (Global System for Mobile Communication) has been established under the European Digital Cellular Telecommunication System's ETSI standard. The digital signals in the Short Message System (SMS) channel are defined in the pr ETS 300536 draft of August 1995 and the pr ETS 300537 draft of March 1995. The SMS is transmitted simultaneously but asynchronously with the audio stream.
SUMMARY OF THE INVENTION
The method according to the present invention of separating and identifying verbal announcements has the advantage that announcement blocks containing individual announcements are transmitted, with which an identification number is associated and thus unambiguous association of the announcement with the information in the respective digital signal, which conveys the data for selection of the announcement in the receiver, is made possible.
In transmitting announcements and digital signals over the mobile wireless network, the GSM (Global System for Mobile Communication) standard is preferably used. This standard allows verbal traffic announcements to be transmitted via a voice channel, while the digital signals are transmitted simultaneously in a GSM control/signal channel.
The digital signals are advantageously transmitted in the Short Message Service (SMS) channel.
The ID number can advantageously be a sequence of numbers in increasing order of transmission, so that, for example, block
2
corresponds to digital signal
2
, regardless of the time of receipt.
In order to separate an announcement in the receiver, the receiver must recognize the beginning and the end of the announcement, which can be achieved using a detector system.
In doing so, the length of the pause between two verbal announcements is advantageously measured, the length of this pause depending on the duration of the verbal announcement. In order to keep the pause to a minimum, the length of the announcement is multiplied by a factor F, which is known to the transmitter and the receiver.
Thus an announcement can be classified as correct and stored if a pause with the calculated duration follows the end of the announcement.
The beginning and end of the transmission, as well as a transmission error, are advantageously recognized and signaled by a fixed stored signal being sent by the receiver to the transmitter.
It is also advantageous if the transmitter marks the beginning and the end of a verbal announcement by tone signals sent to the receiver.
Communication between transmitter and receiver takes place via a tone marker, for example.
Tone sequences, for example, dual tone multifrequency signals, are sent back to the transmitter as a response and acknowledgment of a correct transmission. The tone signals communicate the ID number of the latest correct announcement. This has the advantage that only correct announcements are thus stored in the receiver; otherwise a new sequence of announcements is sent to the receiver.
Separation of announcements in a fixed time reference represents an advantageous method, where each announcement block is preceded by a digital signal with information concerning the duration of the individual announcements. After communication has been successfully established, the receiver waits for the beginning of the announcement block at the following point in time, which is predefined in the common time reference of the transmitter and the receiver.


REFERENCES:
patent: 5146612 (1992-09-01), Grosjean et al.
patent: 5396497 (1995-03-01), Veltman
patent: 5408686 (1995-04-01), Mankovitz
patent: 5526284 (1996-06-01), Mankovitz
patent: 5561849 (1996-10-01), Mankovitz
patent: 5581576 (1996-12-01), Lanzetta et al.
patent: 5774798 (1998-06-01), Gaskill
patent: 5898732 (1995-03-01), Dapper et al.
patent: 0 686 909 (1995-12-01), None
A. C. Gidlow, “Data Services On PCN”, Colloquium on Roaming with Data, Mar. 6, 1995, pp. 1/03-8/03.

Affiliated with

Also associated with

Rating

Process for separating and characterizing spoken... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for separating and characterizing spoken..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for separating and characterizing spoken... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2553108