| 摘要 |
PURPOSE: A system for storing and reproducing improved volume holographic digital data and a method for controlling a reproducing light angle thereof are provided to control requested bias angle of a reproducing light needed at a reproducing the stored hologram data accurately in a system having a storing medium capable of recording and reproducing hologram data. CONSTITUTION: A reflection mirror(108) is driven through a rotation of a motor(123) in a reproducing mode, thus a reference light separated from a light separation unit(104) is reflected by a reproducing angle proper to a reproducing light of hologram data to be reproduced. At this time, the reproducing light is separated into two lights through a light separation unit(110). A reproducing light inputted to a storing medium(140) among the separated light is cut-off by a shutter(112) for maintaining a closing state in accordance with a control from a control block(118). A memory block(120) stores address information with respect to each data(hologram data) recorded in the storing medium(140) as the unit of page, that is, a reproducing address(angle) information of hologram data stored previously. A control block(118) provides a reproducing angle control signal for creating a reproducing light of hologram data to be reproduced to a motor control block(122) based on reproducing address information stored in a memory block(120) in a reproducing mode in accordance with a user's input from the exterior. A motor(123) is driven in accordance with a motor driving signal from a motor control block(122) responded to the reproducing angle control signal. A reflection mirror(108) is rotated in accordance with the driving of the motor(123). A reproducing reference light inputted from a waist constitution lens(106) is reflected to a reproducing light having a bias angle capable of responding to the hologram data to be reproduced, and the light is inputted to the light separation unit(110).
|
