Sample rate conversion of non-audio AES data channels
US6226758A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1997 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Sep 30, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/10527
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An sample rate converter for non-audio AES data channels is presented. Channel status (C) information is transferred in 192-bit blocks. Access to received C channel data blocks is allowed, before the blocks are re-transmitted at the output sample rate. This enables users to modify the data, alleviating the effect of data loss caused by different input and output sample frequencies. For U channel status information, U channel status information is transferred as 2.times.192 bit blocks like the channel status (C) scheme above, as individual information units (IUs), or as messages consisting of 129 IUs. In the latter 2 schemes, the lengths of output inter-IU filler segments or output intemessage filler segments are varied relative to the lengths of inputs inter-IU filler segments or input inter-IU message segments respectively, to compensate for the difference between the input sample frequency and the output sample frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.