Increased spectral efficiency and reduced synchronization delay with bundled transmissions

摘要

Techniques are provided for increasing spectral efficiency over data channels in a storage or communication system. In some embodiments, data may be encoded and transmitted over multiple channels. The transmitted data from the multiple channels may be considered together as a channel bundle, thereby increasing the edge transitions of the group of signals to improve clock recovery and reduce coding constraints. In some embodiments, the channel bit size is reduced to maximize data rates based on the reduced coding constraints. Furthermore, the channel bundle has only one channel with timing markers, so that a receiver may receive information from the channel bundle and recover clocking based on the timing markers in the one channel.

主权项

1. An optical storage system, comprising:
one or more encoders configured to encode source data into optical data to be recorded on multiple data tracks of an optical storage disk, wherein the source data comprises multiple data streams, the encoders are configured to separately encode the multiple data streams, and each of the multiple data streams is to be recorded to one of the multiple data tracks and wherein one of the encoders is configured to encode a timing marker in only one data stream of the multiple data streams an optical head configured to impinge a beam on each of the multiple data tracks to record the optical data in the multiple data tracks; a multi-head detector comprising multiple detector heads, wherein each of the multiple detector heads is configured to detect recorded data from each of the multiple data tracks; and recovery circuitry configured to process the detected recorded data from each of the multiple data tracks together in parallel to recover the source data, wherein the recovery circuitry is configured to recover the timing marker and use the recovered timing marker to recover clock information for the multiple data streams from the only one data stream.