Method of accessing a medium with low power consumption and a recording/reproducing apparatus for realizing the same
First Claim
1. A medium access apparatus having low power consumption, comprising:
- a head;
access means for receiving electrical power and reading data from and writing data to a medium by means of said head when the electrical power is supplied thereto, said medium being rotated;
head driving means including a stepping motor for causing said head to seek a destination track on said medium, in accordance with an input drive signal including step pulses, a number of which corresponds to a number of tracks from a track at which said head is currently positioned, to the destination track;
control signal generating means for indicating stopping of supplying of the electrical power to said access means when said head driving means drives said head more than a predetermined number of tracks and for generating a switch control signal in accordance with the number of step pulses of the input drive signal; and
power supply means for supplying the electrical power to said access means to allow operation of the access means and stopping the supply of the electrical power to prevent operation of said access means in response to the switch control signal from said control signal generating means.
1 Assignment
0 Petitions
Accused Products
Abstract
A medium access apparatus having low power consumption includes a head driving section, an access section, a power supply section and a control signal generating section. When a medium is rotated, the head driving section causes a head to seek a destination track on the medium in accordance with an input drive signal including step pulses, the number of step pulses corresponding to a number of tracks from a current track, where the head positions, to the destination track. The access section accesses the medium through the head when power is supplied to the access section. The power supply section supplies the power to the access section and stopping the supply of the power in accordance with an input switch control signal. The control signal generating section selectively generates and outputs the switch control signal to the power supply section in accordance with the number of step pulses of the drive signal.
-
Citations
12 Claims
-
1. A medium access apparatus having low power consumption, comprising:
-
a head; access means for receiving electrical power and reading data from and writing data to a medium by means of said head when the electrical power is supplied thereto, said medium being rotated; head driving means including a stepping motor for causing said head to seek a destination track on said medium, in accordance with an input drive signal including step pulses, a number of which corresponds to a number of tracks from a track at which said head is currently positioned, to the destination track; control signal generating means for indicating stopping of supplying of the electrical power to said access means when said head driving means drives said head more than a predetermined number of tracks and for generating a switch control signal in accordance with the number of step pulses of the input drive signal; and power supply means for supplying the electrical power to said access means to allow operation of the access means and stopping the supply of the electrical power to prevent operation of said access means in response to the switch control signal from said control signal generating means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A medium access apparatus having low power consumption, comprising:
-
a head; medium access means for accessing a medium through said head when operation power is supplied to said medium access means; seeking means for driving said head from a track on the medium to a destination track on the medium in accordance with an input seek instruction; power supply means for supplying the operation power to said medium access means to allow operation of said medium access means; and supply control means responsive to the seek instruction, for inhibiting said power supply means from supplying the operation power to said medium access means when the destination track is more than a predetermined number of tracks away from a currently positioned track of said head and permitting the supply of the power to said medium access means by said power supply means when the destination track is equal or smaller than the predetermined number of tracks away from the currently positioned track. - View Dependent Claims (9, 10, 11, 12)
-
Specification