Optical disc apparatus and optical pickup unit
A technology for optical pickup and optical discs, which is applied in the manufacture of optical heads, optical recording heads, recording/reproducing with optical methods, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
no. 1 example
[0029] Entire configuration of disc device 1
[0030] The entire configuration of the optical disc device 1 according to the present invention is described with reference to FIGS. 1 and 2 . FIG. 1 is a functional block diagram of an example of the entire configuration of an optical disc apparatus 1 according to the present invention. FIG. 2 is a functional block diagram of an example of the configuration of the photodetector 11 shown in FIG. 1 . The optical disc apparatus 1 shown below will be described as an optical disc apparatus that uses, for example, an astigmatism method as a focus servo for the optical disc 9 and uses, for example, a push-pull method as a tracking servo.
[0031] Components of the optical disc apparatus 1 are described with reference to FIG. 1 . The optical disc device 1 includes an optical pickup unit 2 , a spindle motor 3 , a signal processing unit 4 , a CPU (Central Processing Unit) 5 , a memory (storage unit) 6 , a gain setting unit 7 and a driver...
no. 2 example
[0078] The entire configuration of the optical disc device 23
[0079] The configuration of the optical disc device 23 based on the present invention is described with reference to FIG. 5 . In the optical disc device 23 shown in FIG. 5, the same components as those of the optical disc device 1 shown in FIG. 1 are respectively given the same reference numerals, and descriptions thereof are omitted.
[0080]The optical disc device 23 shown in FIG. 5 is configured with the memory 6 in the optical pickup unit 24 . By providing the memory 6 in the optical pickup unit 24 in this way, when, for example, the optical pickup unit 24 and the optical disc device 23 having a configuration excluding the optical pickup unit 24 are manufactured separately, it is possible to facilitate reduction in the cost of the optical disc device 23 and make the circuit structure Easier to manufacture. The positioning accuracy of the photodetector 11 does not need to be critical, and it can be achieved b...
no. 3 example
[0082] The entire configuration of the optical disc device 25
[0083] The configuration of the optical disc device 25 based on the present invention is described with reference to FIG. 6 . In the optical disc device 25 shown in FIG. 6, the same components as those of the optical disc device 1 shown in FIG. 1 are respectively given the same reference numerals, and descriptions thereof are omitted.
[0084] The optical pickup unit 26 has a memory 21 (first storage unit). For example, there are cases where the corresponding manufacturers of the optical pickup unit 26 and the optical disc device 25 are not the same. In this case, the manufacturer of the optical pickup unit 26 may include the optical pickup unit 26 in an optical disc device having the same configuration as the optical disc device 25 (or the optical disc device 1) to detect the optical pickup unit 26 during the manufacturing process. performance characteristics. The memory 21 stores initial gain data indicating ...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More