Information storage apparatus

Abstract

There is disclosed an information storage apparatus in which even when a remaining power of a battery or a galvanic cell is little, an information recording medium can safely be taken out. An MPU 12 , a spindle motor driver 38 , and a spindle motor 40 constitute a decelerator for decelerating rotation of the information recording medium, and as a deceleration mode, a first deceleration mode with a relatively large power consumption and a second deceleration mode with a relatively small power consumption are disposed. The MPU 12 monitors a voltage of a power supply line 13 via a DSP 16 , decelerates the rotation of the information recording medium in the first deceleration mode when the voltage exceeds a predetermined level, and decelerates the rotation of the information recording medium in the second deceleration mode when the voltage indicates the predetermined level or less.

1 . An information storage apparatus, operated by electric power, for holding an information recording medium in a predetermined position and rotating the information recording medium in a predetermined direction to perform at least information reproduction with respect to the information recording medium, said information storage apparatus comprising: 
 a recognition section for recognizing whether or not said electric power is a power of a predetermined level or more;    a decelerator for decelerating rotation of said information recording medium in a first deceleration mode which consumes a relatively large amount of power, or decelerating the rotation of said information recording medium in a second deceleration mode which consumes a relatively small amount of power, depending upon whether said recognition section recognizes that said electric power is the power of the predetermined level or more, or that said electric power is less than the predetermined level; and    a driver for receiving a signal indicating a rotation speed, and driving the information recording medium in said predetermined direction in such a manner that said information recording medium rotates at the rotation speed indicated by the signal,    wherein said decelerator employs, as said second deceleration mode, a deceleration mode for inputting a signal indicating a rotation speed lower than the rotation speed of said information recording medium to said driver to decelerate the rotation of the information recording medium.    
   
   
       2 - 6 . (canceled)  
   
   
       7 . The information storage apparatus according to  claim 1 , further comprising a driver for receiving a signal indicating a rotation speed, and driving the information recording medium in said predetermined direction in such a manner that said information recording medium rotates at the rotation speed indicated by the signal, 
 wherein said decelerator employs a deceleration mode for inputting a signal indicating a rotation speed lower than the rotation speed of said information recording medium to said driver to decelerate the rotation of the information recording medium and subsequently inputting a signal indicating a rotation speed further lower than the rotation speed indicated by the signal to said driver to further decelerate the rotation of said information recording medium as said second deceleration mode.    
   
   
       8 . The information storage apparatus according to  claim 1 , further comprising: 
 a driver for receiving a signal indicating a rotation speed, and driving the information recording medium in said predetermined direction in such a manner that said information recording medium rotates at the rotation speed indicated by the signal; and    a brake for applying a brake force to said information recording medium to decelerate the rotation,    wherein said decelerator employs a deceleration mode for inputting a signal indicating a rotation speed lower than the rotation speed of said information recording medium to said driver to decelerate the rotation of the information recording medium and subsequently operating said brake to further decelerate the rotation of the information recording medium as said second deceleration mode.    
   
   
       9 - 10 . (canceled)  
   
   
       11 . An information storage apparatus for holding an information recording medium in a predetermined position and rotating the information recording medium in a predetermined direction to perform at least information reproduction with respect to the information recording medium, said information storage apparatus comprising: 
 a driver for receiving a signal indicating a rotation speed, and driving the information recording medium in said predetermined direction in such a manner that said information recording medium rotates at the rotation speed indicated by the signal;    a signal controlling decelerator for inputting a signal indicating a rotation speed lower than the rotation speed of said information recording medium to said driver to decelerate rotation of the information recording medium; and    a brake for applying a brake force to said information recording medium to decelerate the rotation;    wherein said signal controlling decelerator inputs the signal indicating the rotation speed lower than the rotation speed of said information recording medium to said driver to decelerate the rotation of the information recording medium, and subsequently operates said brake to further decelerate and stop the rotation of the information recording medium.    
   
   
       12 . The information storage apparatus according to  claim 11  wherein said signal controlling decelerator inputs the signal indicating the rotation speed lower than the rotation speed of said information recording medium to said driver to decelerate the rotation of the information recording medium, and subsequently inputs a signal indicating a rotation speed further lower than the rotation speed indicated by the signal to said driver to further decelerate the rotation of said information recording medium.  
   
   
       13 . (canceled)