Data recording method and device
Patent 5239470 Issued on August 24, 1993. Estimated Expiration Date: 
February 7, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 7, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMethod for compressing data of two-value picture image Retro-stroke compression and image generation of script and graphic data employing an information processing system Signal processing system Patent #: 4839649 InventorAssigneeApplicationNo. 651830 filed on 02/07/1991US Classes:701/35, With data recording device708/203Compression/decompressionExaminersPrimary: Chin, GaryAttorney, Agent or FirmForeign Patent References
International ClassG06F 015/74Foreign Application Priority Data1990-02-08 JPAbstractData recording device including a sampling device for sampling data to be recorded at a predetermined period, a permissible error range calculating device for calculating a permissible error range with respect to the data sampled by the sampling device at each sampling timing, and a recording device for deciding a longest straight line intersecting the permissible error range calculated by the permissible error range calculating device and recording a length of the straight line represented by a sampling number obtained by the sampling device and the data at an end point of the straight line, whereby compression processing of the data sampled is carried out, and the data compressed is recorded. The data recording device further includes a device for detecting an inflection point of the data sampled by the sampling device, wherein when the inflection point is detected by the inflection point detecting device, the compression processing is stopped. | |
