Process for transmitting and/or storing digital signals of multiple channels

US5706309A · kind A · utility

Assignee

• Max-Planck-Gesellschaft zur Föderung der Wissenschaften e.V. · US

Inventors

• Ernst Eberlein · Erlangen, DE
• Jürgen Herre · Buckenhof, DE
• Bernhard Grill · Lautenbächle, DE
• Dieter Seitzer · Erlangen, DE

Key dates

• Filing date: May 2, 1995
• Grant date: Jan 6, 1998
• Expiry date: May 2, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G11B20/00992
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A process for transmitting and/or storing digital signals of multiple chals. This process is suited, in particular, for transmitting the five channels of 3/2 stereophony as well as for transmitting two stereo channels and three additional commentary channels. In this manner, by way of illustration, television programs with multi-language audio signals can be transmitted. This process is distinguished in that by reduction of the to-be-transmitted data, only a bit rate of 384 kbit/s is required for transmission. The reduction of the data is achieved by the K input channels being imaged in segments onto the N.ltoreq.K virtual spectral data channels, by the spectral data channels being quantized, coded, and transmitted taking into consideration the principles of psychoacoustics, and by K output channels being reproduced from the transmitted bit stream with the aid of a transmitted list from the N.ltoreq.K spectral data channels.