Information reproducing method and apparatus
AssigneeRicoh Company, Ltd.
InventorYoshiyuki Sasaki
Life of this patent
Estimating the term…
Abstract
An information reproducing method includes the steps o of reading information from an information medium that is rotated, and determining a rotation velocity of the information medium on the basis of a data transfer rate based on a specification of a read request.
Claims18
An information reproducing method comprising the steps of:
- reading information from an information medium that is rotated;
- and
- determining a rotation velocity of the information medium on the basis of a data transfer rate based on a specification of a read request.
An information reproducing method comprising the steps of:
- reading information from an information medium that is rotated;
- and
- measuring an average transfer rate in data read and lowering a rotation velocity of the information medium if the average transfer rate measured is equal to or lower than a predetermined threshold value.
An information reproducing method comprising the steps of:
- reading information from an information medium that is rotated;
- and
- measuring an average transfer rate in data read and raising a rotation velocity of the information medium if the average transfer rate measured is greater than a predetermined threshold value.
An information reproducing method comprising the steps of:
- reading information from an information medium that is rotated;
- measuring an average transfer rate in data read and raising a rotation velocity of the information medium if the average transfer rate measured is greater than a predetermined threshold value;
- and
- lowering the rotation velocity if the average transfer rate is equal to or lower than the predetermined threshold value.
An information reproducing apparatus comprising:
- a motor rotating an information medium;
- an optical pickup reading information from the information medium;
- and
- a part determining a rotation velocity of the information medium on the basis of a data transfer rate based on a specification of a read request.
An information reproducing apparatus comprising:
- a motor rotating an information medium;
- an optical pickup reading information from the information medium;
- a measuring part measuring an average transfer rate in data read;
- a comparing part comparing the average transfer rate measured with a predetermined threshold value;
- and
- a rotation velocity control part lowering a rotation velocity of the information medium by the motor if a result of comparison shows that the average transfer rate measured is equal to or lower than a predetermined threshold value.
An information reproducing apparatus comprising:
- a motor rotating an information medium;
- an optical pickup reading information from the information medium;
- a measuring part measuring an average transfer rate in data read;
- a comparing part comparing the average transfer rate measured with a predetermined threshold value;
- and
- a rotation velocity control part raising a rotation velocity of the information medium by the motor if a result of comparison shows that the average transfer rate measured exceeds a predetermined threshold value.
An information reproducing apparatus comprising:
- a motor rotating an information medium;
- an optical pickup reading information from the information medium;
- a measuring part measuring an average transfer rate in data read;
- a comparing part comparing the average transfer rate measured with a predetermined threshold value;
- and
- a rotation velocity control part lowering a rotation velocity of the information medium by the motor if a result of comparison shows that the average transfer rate measured is equal to or lower than a predetermined threshold value and raising the rotation velocity if the result of comparison shows the average transfer rate measured exceeds the predetermined threshold value.
Dependencies are inferred from the claim text.