摘要:
The invention provides a method for data recording of an optical disk drive. First, raw data is encoded to obtain a plurality of recording units of encoded data to be stored in a memory. The encoded data stored in the memory is then recorded to an optical disk. A predetermined number of recording units of the encoded data is then reserved in the memory as reserved data without being recorded onto the optical disk. The recorded data read from the optical disk is then compared to the corresponding encoded data stored in the memory to verify correctness of the recorded data. The reserved data is then recorded to the optical disk after correctness verification of the recorded data is completed. Finally, the aforementioned steps are repeated until there is no more raw data left as a source for encoding.
摘要:
A light-emitting element detection and classification device includes a rotation unit for transporting a plurality of light-emitting elements, a chip detection unit, and a chip classification unit. The rotation unit includes at least one rotary turntable, a plurality of receiving portions formed on the rotary turntable, and a plurality of suction-exhaust dual-purpose openings respectively disposed in the receiving portions, each receiving portion selectively receives at least one of the light-emitting elements. Each light-emitting element is an LED package chip having a positive electrode pad and a negative electrode pad disposed on the bottom side thereof. The chip detection unit includes at least one chip detection module adjacent to the rotation unit for detecting each light-emitting element. The chip classification unit includes at least one chip classification module adjacent to the rotation unit for classifying the LED package chips that have been detected by the at least one chip detection module.
摘要:
A method and device for error analysis particularly adoptable for a recording medium such as an optical disc are disclosed. The present invention executes an encoding-like operation such as an interleaving operation to error flags during reproducing data from the optical disc, so as to obtain number and distribution of the errors on the disc.
摘要:
A detection system for detecting appearances of many electronic elements includes a rotary module, a feeding module and a detection module. The rotary module has a base structure and a hollow transparent rotary structure disposed on the base structure. The feeding module is disposed beside one side of the hollow transparent rotary structure in order to sequentially guide the electronic elements to the top surface of the hollow transparent rotary structure. The detection module has a plurality of detection units sequentially disposed around the hollow transparent rotary structure. Each detection unit is composed of an image-sensing element for sensing the electronic elements, an image-capturing element for capturing surface images of the electronic elements and a classifying element for classifying the electronic elements.
摘要:
A weighted defect estimating apparatus and a related method for determining a defect estimation value are disclosed. The weighted defect detecting apparatus includes: a defect detecting unit for generating a defect value when a defect in a predetermined region of an optical disc is detected; a weighting circuit, electrically connected to the defect detecting unit, to generate a weighted defect value according to the defect value and a weighting factor corresponding to a location of the defect on the optical disc; and a computing module, electrically connected to the weighting circuit, for computing the defect estimation value according to a plurality of weighted defect values corresponding to the predetermined region.
摘要:
An information recording device and a related method are disclosed. The information recording device and the related method are capable of adjusting a phase error between a first synchronization signal and a second synchronization signal, where the first synchronization signal is synchronous to a location on a recording medium, the second synchronization signal is synchronous to a data pattern to be written onto the recording medium, and the data pattern comprise a sync pattern and a non-sync pattern. The information recording device includes a phase detector for detecting the phase error between the first synchronization signal and the second synchronization signal; and a controller, electrically connected to the phase detector, for adjusting the length of the non-sync pattern of the data pattern according to the phase error, thereby making the second synchronization signal substantially synchronized with the first synchronization signal.
摘要:
An information recording device and related method are disclosed. The information recording device is capable of adjusting a phase difference between a first synchronization signal and a second synchronization signal. The information recording device includes an encoder for generating a run-length of an encoded data; a phase detector for detecting the phase difference between the first and the second synchronous signals; a shift offset controller, electrically connected to the phase detector, for generating a shift information according to the phase difference; and a write pulse generator, electrically connected to the encoder and the shift offset controller, for generating a write pulse signal according to the run-length of the encoded data and the shift information, thereby making the first synchronous signal synchronized with the second synchronous signal.
摘要:
An LED package chip classification system includes a rotation unit for transporting a plurality of LED package chips, a chip test unit, and a chip classification unit. The rotation unit includes a rotary turntable, a plurality of receiving portions formed on the rotary turntable, and a plurality of suction-exhaust dual-purpose openings respectively disposed in the receiving portions. Each LED package chip has a positive electrode pad and a negative electrode pad disposed on the bottom side thereof. The chip test unit includes a chip test module adjacent to the rotation unit for testing each LED package chip. The chip classification unit includes a plurality of chip classification modules adjacent to the rotation unit for classifying the LED package chips. Therefore, the LED package chips can be classified by matching the rotation unit, the chip test unit, and the chip classification unit.
摘要:
An LED package chip classification system includes a rotation unit for transporting a plurality of LED package chips, a chip test unit, and a chip classification unit. The rotation unit includes a rotary turntable, a plurality of receiving portions formed on the rotary turntable, and a plurality of suction-exhaust dual-purpose openings respectively disposed in the receiving portions. Each LED package chip has a positive electrode pad and a negative electrode pad disposed on the bottom side thereof The chip test unit includes a chip test module adjacent to the rotation unit for testing each LED package chip. The chip classification unit includes a plurality of chip classification modules adjacent to the rotation unit for classifying the LED package chips. Therefore, the LED package chips can be classified by matching the rotation unit, the chip test unit, and the chip classification unit.
摘要:
A packaged chip detection and classification device includes a rotation unit for transporting a plurality of packaged chips, a packaged chip detection unit, and a packaged chip classification unit. The rotation unit includes a rotary turntable, a plurality of receiving portions formed on the rotary turntable, and a plurality of suction-exhaust openings respectively formed in the receiving portions. Each receiving portion is used to selectively receive at least one of the packaged chips. The packaged chip detection unit includes a packaged chip detection module adjacent to the rotation unit for detecting each packaged chip. The packaged chip classification unit includes a packaged chip classification module adjacent to the rotation unit for classifying the packaged chips. Therefore, the packaged chip detection and classification device can be used to detect and classify no-lead packaged chips by matching the rotation unit, the packaged chip detection unit, and the packaged chip classification unit.