Control unit for transmitting audio signals over an optical network and methods of doing the same
US7519085B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2003 |
| Grant date | Apr 14, 2009 |
| Priority date | — |
| Expiry date | Jan 19, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/2803
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system and control unit (26) for transmitting and distributing multiplexed audio data over an optical network (32). The control unit (26) comprises an audio sampler (36), a microcomputer (34), and an optical network interface (40). The audio sampler (36) samples a plurality of electrical signals (42A-D) from transducers (22A-D) and generates a plurality of raw audio data streams (54A-D) from the electrical signals (42A-D). The audio sampler (36) is capable of sampling the electrical signals (42A-D) at a fraction of a frame synchronization rate (Fs) of the optical network (32). The microcomputer (34) has an audio processor function (56) and a multiplexer function (58). The audio processor function (56) is capable of processing the raw audio data streams (54A-D) to generate a single processed audio data stream (62) at the frame synchronization rate (Fs) of the optical network (32). The multiplexer function (58) is capable of generating a multiplexed audio data stream (66) having a plurality of frames (70). Each frame (70) has a plurality of time division multiplexed channels wherein a first channel within each frame is assigned to transmit the plurality of raw audio data streams (5…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.