Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10687122 | Concept for determining the quality of a media data stream with varying quality-to-bitrate | Michael Keyhl, Matthias Obermann, Roland Bitto | 2020-06-16 |
| 9037435 | Device and method for determining a sample rate difference | Roland Bitto, Michael Keyhl | 2015-05-19 |
| 8228385 | Apparatus for determining information in order to temporally align two information signals | Michael Keyhl, Roland Bitto | 2012-07-24 |
| 7680056 | Apparatus and method for extracting a test signal section from an audio signal | Michael Keyhl, Roland Bitto | 2010-03-16 |
| 7664231 | Method and device for quality evaluation of an audio signal and device and method for obtaining a quality evaluation result | Martin Kastner, Michael Keyhl | 2010-02-16 |
| 6101475 | Method for the cascaded coding and decoding of audio data | Michael Keyhl, Harald Popp, Ernst Eberlein, Karl-Heinz Brandenburg, Heinz Gerhauser | 2000-08-08 |
| 5926553 | Method for measuring the conservation of stereophonic audio signals and method for identifying jointly coded stereophonic audio signals | Michael Keyhl, Jürgen Herre, Karlheinz Brandenburg, Dieter Seitzer | 1999-07-20 |