Multi-dimensional coding for high-density storage media applications
AssigneeThomson Licensing
InventorsChandra Mohan, James Zhiming Zhang
Life of this patent
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Abstract
An asynchronous transfer mode digital document delivery system is provided. A customer premise unit is configured to permit a customer to order and receive a data stream. A buffer is coupled to the customer premise unit to store the data stream before transmitting the data stream to a customer. A server includes digital documents stored thereon for delivery to customers through a switched ATM network. A control mechanism is employed to control a data rate of the data stream between the server and the buffer to ensure maintenance of a steady data stream from the customer premise unit to a customer during a loss of a physical layer between the server and the customer premise unit.
Claims16
A method for encoding a random bit stream in two-dimensions for storage on a storage medium, comprising the steps of:
- encoding (3310) the random bit stream using Variable Aperture Coding (VAC) so as to generate a constant amplitude, varying pulse-width, VAC encoding that represents the random bit stream by a plurality of pulses separated using only transition widths included in a pre-specified set of transition widths.
A method for storing a random bit-stream on a storage medium, comprising the steps of:
- representing (3310) the random bit stream by a constant amplitude, varying pulse-width, VAC encoding having a plurality of pulses that are separated using only transition widths included in a pre-specified set of transition widths;
- and
- transmitting (3320) the VAC encoding along a data channel for storage on the storage medium.
Dependencies are inferred from the claim text.