Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2005-09-09
2010-06-08
Ho, Duc C (Department: 2465)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S242000, C370S250000, C370S228000
Reexamination Certificate
active
07733918
ABSTRACT:
In a live audio presentation system, a stage rack and a front of house rack are interconnected by a transmission medium that transmits digital audio data and control information between them. Packets of digital audio data and control information are sent at the audio sampling rate. The packets of data are encoded using an encoding technique that provides unique codes that may be detected, thus enabling clock recovery of a clock signal embedded in the data packets. Data packets may include data for error checking. A serial digital transmission medium may be used as the transmission medium. Such a transmission medium uses low voltage signals and supports high bit rates. The system is synchronized by the FOH rack which transmits data to the stage rack according to a local audio sample clock or an external audio sample clock to which it synchronizes. This clock is embedded in data packets sent to the stage rack. The stack rack recovers the audio sample clock from data received from the FOH rack and synchronizes its receive and transmit operations to this recovered clock. The FOH rack recovers the audio sample clock from data received from the stage rack and synchronizes its receive operations to this recovered clock. The FOH rack may include an embedded computer that processes the digital audio data, and may include DSP processing that handles so-called plug-in software. A digital audio workstation or sequencer also may be connected to the FOH rack to either record the live presentation or to inject edited, recorded audio into the live presentation.
REFERENCES:
patent: 5792971 (1998-08-01), Timis et al.
patent: 6353169 (2002-03-01), Juszkiewicz et al.
patent: 6507658 (2003-01-01), Abel et al.
patent: 2003/0050989 (2003-03-01), Marinescu et al.
patent: 2003/0055518 (2003-03-01), Aiso et al.
patent: 2003/0172797 (2003-09-01), Juszkiewicz et al.
patent: 2004/0032883 (2004-02-01), Knapp et al.
patent: WO 03/087980 (2003-10-01), None
Lidbetter, P.S. et al., “A Fibre Optic Multi-Channel Communication Link Developed for Remote Interconnection in a Digital Audio Console”, Audio Engineering Society Reprint 1986, Audio Engineering Society, NY, NY, XP000796837, Mar. 1986, pp. 2-30.
Berenger Georges
Bittle Scott C.
Clementson David D.
Conry Dave
Michael Chris
AVID Technology Inc.
Ho Duc C
Strimpel Oliver
LandOfFree
System for live audio presentations does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for live audio presentations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for live audio presentations will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4235666