摘要:
A method and apparatus for managing defect areas of a rewritable optical recording medium. Upon receiving a write or read command from a host, the defect areas management apparatus decodes a PID of a position being currently traced by an optical pickup, generates the resultant physical sector number of the current position and compares it with a physical sector number of a defect area stored in a DMA storage unit. If the two physical sector numbers are the same, the defect areas management apparatus does not write or read data on a sector of the position traced by the optical pickup. Therefore, the defect areas management apparatus is capable of efficiently managing defect areas of the optical recording medium.
摘要:
This invention relates to a system for measuring water quality using a smartphone, and more particularly to a system for measuring water quality using a smartphone, in which, to solve problems of hand-operated and manual water quality measurement methods and in order to increase reliability and accuracy, a water quality meter and a smartphone, which mutually communicate with each other, are utilized, and also, the smartphone is provided with a memory unit, a calculation unit, a GPS unit, etc., thus enabling water quality to be measured in real time and water quality data to be stored and transferred to the outside, so that reliability and accuracy of the measured water quality data may be improved.
摘要:
This invention relates to a system for measuring water quality using a smartphone, and more particularly to a system for measuring water quality using a smartphone, in which, to solve problems of hand-operated and manual water quality measurement methods and in order to increase reliability and accuracy, a water quality meter and a smartphone, which mutually communicate with each other, are utilized, and also, the smartphone is provided with a memory unit, a calculation unit, a GPS unit, etc., thus enabling water quality to be measured in real time and water quality data to be stored and transferred to the outside, so that reliability and accuracy of the measured water quality data may be improved.