Optical disc apparatus
First Claim
1. A disc driving apparatus for reproducing information signals recorded in a series of unit recording areas of a disc type recording medium, a defective area of the series of unit recording areas being substituted by a following unit recording area, said disc driving apparatus comprising:
- reproducing means for reproducing the information signals recorded in said disc type recording medium;
first control means for controlling an operation of said reproducing means;
memory means for temporarily storing the information signals reproduced by said reproducing means;
second control means for controlling an operation of said memory means; and
system control means responsive to a main command signal for supplying a first command signal and a second command signal to said first control means and said second control means, respectively, said first command signal indicating to reproduce all unit areas indicated in said main command signal and all defective areas existing among the unit areas indicated in said main command signal, and said second command signal indicating not to write the information signal reproduced from the defective area into said memory means.
1 Assignment
0 Petitions
Accused Products
Abstract
A disc driving apparatus using SSA (sector slipping algorithm) for defective sectors and LRA (linear replacement algorithm). This disc driving apparatus is simple in arrangement and can reproduce data at high speed in a simple processing on the basis of attribute data representing whether a defective sector is processed by the SSA or the LRA. This disc driving apparatus includes an optical head for reproducing data recorded in an optical disc, a drive controller for controlling operation of the optical head, a memory for temporarily storing reproduced data, a DMA (dynamic memory access) controller for controlling an access to the memory, and a system controller for controlling the drive controller and the DMA controller by supplying first and second command signals thereto in response to a main command signal requesting a write or read operation on a series of sectors.
211 Citations
12 Claims
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1. A disc driving apparatus for reproducing information signals recorded in a series of unit recording areas of a disc type recording medium, a defective area of the series of unit recording areas being substituted by a following unit recording area, said disc driving apparatus comprising:
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reproducing means for reproducing the information signals recorded in said disc type recording medium; first control means for controlling an operation of said reproducing means; memory means for temporarily storing the information signals reproduced by said reproducing means; second control means for controlling an operation of said memory means; and system control means responsive to a main command signal for supplying a first command signal and a second command signal to said first control means and said second control means, respectively, said first command signal indicating to reproduce all unit areas indicated in said main command signal and all defective areas existing among the unit areas indicated in said main command signal, and said second command signal indicating not to write the information signal reproduced from the defective area into said memory means. - View Dependent Claims (2, 3)
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4. A disc driving apparatus for recording information signals in a series of unit recording areas of a disc type recording medium, a defective area of the series of unit recording areas being substituted by a following unit recording area, said disc driving apparatus comprising:
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recording means for recording the information signals to said disc type recording medium; first control means for controlling an operation of said recording means; memory means for temporarily storing the information signals which are to be recorded in said disc type recording medium; second control means for controlling an operation of said memory means; and system control means responsive to a main command signal for supplying a first command signal and a second command signal to said first control means and said second control means, respectively, said first command signal indicating to record all unit areas indicated in said main command signal and all defective areas existing among the unit areas indicated in said main command signal, and said second command signal indicating not to read the information signal corresponding to the position of the defective area. - View Dependent Claims (5, 6)
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7. A disc driving apparatus for recording information signals to a series of unit recording areas of a disc type recording medium, a first defective area of the series of unit recording areas being substituted by a following unit recording area and a second defective area of the unit recording area being substituted by an alternate recording area which is located apart from said series of unit recording areas, said disc driving apparatus comprising:
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recording means for recording the information signals to said disc type recording medium; first control means for controlling an operation of said reproducing means; memory means for temporarily storing the information signals which are to be recorded; second control means for controlling an operation of said memory means; and system control means responsive to a main command signal for supplying a first command signal and a second command signal to said first control means and said second control means, respectively, said first command signal indicating to record all unit areas indicated in said main command signal and all first defective areas existing among the unit areas indicated in said main command signal, and said second command signal indicating not to read out the information signal corresponding to the first defective areas when the first defective area exists in the area indicated by said main command signal, and said first command signal indicating to record all unit areas indicated in said main command signal and all second defective areas existing among the unit areas indicated in said main command signal and to record the information signal corresponding to the second defective area to the alternate recording areas after recording all the unit areas. - View Dependent Claims (8, 9)
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10. A disc driving apparatus for recording information signals to and reproducing from a series of unit recording areas of a disc type recording medium, a first defective area of the series of unit recording areas being substituted by a following unit recording area and a second defective area of the series of unit recording areas being substituted by an alternate recording area which is located apart from said series of unit recording areas, said disc driving apparatus comprising:
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recording and reproducing means for recording the information signals to and reproducing the information signals from said disc type recording medium; first control means for controlling an operation of said recording and reproducing means; memory means for temporarily storing the information signals reproduced from said recording and reproducing means and the information signals which are to be recorded by said recording and reproducing means; second control means for controlling an operation of said memory means; and system control means responsive to a main command signal for supplying a first command signal and a second command signal to said first control means and said second control means, respectively, said first command signal indicating to record or reproduce all unit areas indicated in said main command signal and all first defective areas existing among the unit areas indicated in said main command signal, and said second command signal indicating not to read out or not to store the information signal corresponding to the first or second defective areas when the first or second defective areas exist in the area indicated by said main command signal. - View Dependent Claims (11, 12)
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Specification