The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 27, 2001
Filed:
Aug. 25, 1998
Petri Haavisto, Tampere, FI;
Nokia Telecommunications Oy, Espoo, FI;
Abstract
A method and an apparatus for implementing the method, which allow a transmitter (,) of a digital telecommunication system transmitting speech to transmit predetermined messages to a receiver (,) over a speech channel (,). Messages (,) are transmitted from the transmitter (,) to the receiver (,) on the speech channel (,) in such a way that they are encoded in some of the speech coding bits, whereby the speech coding bits selected for message transmission have been selected in such a way that they affect the quality of speech as little as possible. Most preferably, the speech coding bits used for transmitting messages are protected by channel coding (,). Speech coding bits are “stolen” for message transmission only for very short periods at a time and only for exactly the time it takes to transmit the messages (,); at other times, the entire speech channel (,) is used normally for speech transmission.