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46 results about "Pit pattern" patented technology

Date recording device, controlling device for data recording device and data recording method

A data recording device, in the case where a data recording operation is suspended, even when a synchronization pattern cannot be detected due to a scratch of an optical disk or the like, a position where the last data is recorded is precisely detected so as to resume the recording operation without causing a joint. For this purpose, in resuming the suspended recording operation in the data recording device of this invention, reproducing pattern data corresponding to a pit pattern having been recorded in the optical disk is first reproduced. A synchronization pattern detection circuit detects a synchronization pattern and outputs a pre-complementation synchronization signal. A synchronization signal complementation circuit detects presence of a synchronization signal (synchronization signal pulse) and outputs a detection/loss signal to a synchronization signal non-detection counter. Also, when the synchronization signal is lost, the synchronization signal complementation circuit complements the synchronization signal and outputs a post-complementation synchronization signal to an address detection/complementation circuit and the like. The synchronization signal non-detection counter outputs a non-complementation signal when synchronization signals are continuously lost, so as to stop the resumption of the recording operation.
Owner:PANASONIC CORP

Method for generating meteorite impact pit pattern effect on porcelain stoneware

InactiveCN102491790ASolve relatively flatSolve the decorativeFritCelestial body
The invention provides a method for generating meteorite impact pit pattern effect on porcelain stoneware, which comprises the following steps: 1) mixing 1 part by weight of borax, 4-6 parts by weight of argil, 4-6 parts by weight of loess and 8-12 parts by weight water, and grinding into pulp as a cladding glaze; 2) spraying the cladding glaze on a porcelain stoneware blank to form a 0.1-0.3mm glaze; 3) firing the porcelain stoneware blank with the cladding glaze at 600-700 DEG C for 6-8 hours to form a cladding glaze surface; 4) mixing 4-6 parts by weight argil, 4-6 parts by weight of loess, 1-3 parts by weight of quartz, 1 part by weight of fusion cake and 9-13 parts by weight of water, and grinding into glaze pulp as an overglaze; 5) spraying the overglaze on the semi-finished product blank to form a glaze surface which is 0.1-0.3mm thick; and 6) firing the porcelain stoneware blank with the cladding glaze and the overglaze at 1150-1180 DEG C for 13-15 hours, and keeping the temperature for 1-1.5 hours to obtain the porcelain stoneware. The invention adopts a glaze low-temperature granular material method, and the low-temperature material is gasified in the firing process to generate the pattern of different sizes of pits formed by meteorite impacts on a celestial body, so that the porcelain stoneware has strong stereo perception and decorative effect; and the invention overcomes the defects of flat glaze surface and single decorative effect in the porcelain stoneware.
Owner:项云生
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