Transmission, recording and reproduction of digital data and time information in transport packets using a compression ratio
AssigneeSony Corporation
InventorNaofumi Yanagihara
Life of this patent
Estimating the term…
Abstract
A data packet which contains time information is time compressed and the time information is extracted from the time compressed data packet. A system clock is synchronized with the extracted time information and is multiplied by a predetermined compression ratio to produce replacement time information which replaces the time information in the time compressed data packet. The time compressed data packet that now contains the replacement time information is modulated and transmitted or recorded.
Claims12
A data transmitting apparatus, comprising:
- means for time compressing a data packet by a predetermined compression ratio, said data packet containing a first time information;
- means for extracting said first time information from said time compressed data packet;
- means for generating a system clock synchronized with said extracted first time information;
- means for generating a second time information by multiplying said system clock by said predetermined compression ratio;
- means for replacing said first time information in said time compressed data packet with said second time information;
- and
- means for modulating and transmitting said time compressed data packet containing said second time information.
A method of transmitting data, comprising the steps of:
- time compressing a data packet by a predetermined compression ratio, said data packet containing a first time information;
- extracting said first time information from said time compressed data packet;
- generating a system clock synchronized with said extracted first time information;
- generating a second time information by multiplying said system clock by said predetermined compression ratio;
- replacing said first time information in said time compressed data packet with said second time information;
- and
- modulating and transmitting said time compressed data packet containing said second time information.
A data recording apparatus, comprising:
- means for receiving a data packet containing first time information;
- means for time compressing said first time information in the received data packet by a predetermined compression ratio;
- means for extracting said compressed first time information from said data packet;
- means for generating a system clock synchronized with said extracted compressed first time information;
- means for generating second time information by multiplying said system clock by said predetermined compression ratio;
- means for inserting said second time information into said time compressed data packet;
- and
- means for recording said time compressed data packet containing said second time information on a record medium.
A method of recording data, comprising the steps of:
- receiving a data packet containing first time information;
- time compressing said first time information in the received data packet by a predetermined compression ratio;
- extracting said compressed first time information from said data packet;
- generating a system clock synchronized with said extracted compressed first time information;
- generating second time information by multiplying said system clock by said predetermined compression ratio;
- inserting said second time information into said time compressed data packet;
- and
- recording said time compressed data packet containing said second time information on a record medium.
Dependencies are inferred from the claim text.