Data compression method and data communication system utilizing the same
First Claim
1. A data compression method comprising:
- comparing, in response to input of data to be sent using a text-based protocol, the input data with previously sent data in storage; and
producing, when a data item repeated in the input data and previously sent data is found, a delta data by excluding the repeated data item from the input data.
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Abstract
A data compression method and data communication system utilizing the same includes: a sender apparatus that compares, in response to input of data to be sent, the input data with the previously sent data in storage. The sender apparatus produces, when a data item repeated in the input data and previously sent data is found, delta data by excluding the repeated data item from the input data. The sender apparatus represents the delta data in a transport format, and transmits the delta data. The system includes a receiver apparatus that receives the data in a transport format. The receiver apparatus adds, when delta data is present in the received data, a repeated data item to the delta data, and recovers the original data. The sender apparatus sends and receives data to and from the receiver apparatus through a text-based protocol.
120 Citations
20 Claims
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1. A data compression method comprising:
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comparing, in response to input of data to be sent using a text-based protocol, the input data with previously sent data in storage; and producing, when a data item repeated in the input data and previously sent data is found, a delta data by excluding the repeated data item from the input data. - View Dependent Claims (2, 3, 4, 5)
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6. A data communication system comprising:
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a sender apparatus configured to compare, in response to input of data to be sent, the input data with a previously sent data in storage, wherein the sender apparatus further is configured to produce, when a data item repeated in the input data and previously sent data is found, a delta data by excluding the repeated data item from the input data, represent the delta data in a transport format, and transmit the delta data; and a receiver apparatus configured to receive data in a transport format, the receiver apparatus configured to add, when delta data is present in the received data, a repeated data item to the delta data, and recover an original data, wherein the sender apparatus sends and receives data to and from the receiver apparatus through a text-based protocol. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A data communication apparatus comprising:
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a pattern analyzer configured to analyze input data to identify a type or pattern; a delta generator configured to compare the input data received from the pattern analyzer with a previously sent data, wherein the delta generator further is configured to produce, when a data item repeated in the input data and previously sent data is found, a delta data by excluding the repeated data item from the input data, represent the delta data in a transport format; and a transmitter configured to transmit the delta data through a text-based protocol. - View Dependent Claims (17, 18, 19, 20)
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Specification