Title:
【発明の名称】データの圧縮及び圧縮解除方法
Document Type and Number:
Japanese Patent JP3083344
Kind Code:
B2
Abstract:
The invented data compression/decompression methods, device, and resulting data structures, operate by noting likenesses and differences between portions of data, and effecting data storage only with respect to the noted differences. The compression method arranges the data, compares portions of the data, and provides a flag to signal changes between adjacent data portions. The decompression method reads a portion of data, identifies whether the flag signals any changes in the data, and if so, reads a subsequent portion of data; but if no changes are signaled, then the first portion of data is duplicated. The invented device includes memory, a structure for storing data in the memory, data stored in the memory with flags to signal changes in the data, and structure for accessing and using the stored data. The invented data structure includes data divided into predetermined sections, and flags associated with the sections to signal changes within the sections.
More Like This:
| JPH05318843 | TAPE PRINTER |
| JPH06305197 | ELECTRONIC DEVICE HAVING STATUS REGISTER |
| JPH0550655 | PRINTER |
Inventors:
Thomas B. Pritchard
Application Number:
JP14960991A
Publication Date:
September 04, 2000
Filing Date:
May 24, 1991
Export Citation:
Assignee:
HEWLETT-PACKARD COMPANY
International Classes:
B41J2/485; B41J5/30; G06F3/153; G06K15/02; G06T3/40; G06T9/00; G09G5/24; H04N1/415; H04N1/417; (IPC1-7): G09G5/24; B41J2/485; B41J5/30; G06F3/153; G06T3/40; H04N1/415
Attorney, Agent or Firm:
Hideo Ueno