System for the exchange of data between an electronic object coupled to a transfer device with distinct data bit rates, insertable object and corresponding transfer device
First Claim
1. A system for the exchange of data between at least one movable, insertable electronic object and at least one transfer device,said insertable object comprising an electronic memory associated with an access circuit and coupling means enabling the temporary coupling of said insertable object with said transfer device;
- said transfer device comprising means for the transfer of data between the memory of the insertable object and the transfer device;
said insertable object emulating a magnetic recording support with respect to a magnetic read/write head of the transfer device, the data exchange bit rate of the transfer device being greater than that of the access circuit of the memory of the insertable object, wherein said system comprises means to limit the bit rate of useful data in the apparent bit rate of data entering and leaving the transfer device, so that it is compatible with the bit rate leaving and entering the access circuit of the memory of the insertable object, said means to limit the bit rate consisting of at least one means belonging to the group including the redundant coding and the n times (n≧
2) replication of at least certain of said useful data, in the flow of data entering and leaving and the transfer device.
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Accused Products
Abstract
A system for the exchange of data between a transfer device and an "intelligent insertable object" that comprises an electronic memory associated with an access circuit and emulates a magnetic recording support with respect to a magnetic read/write head of the transfer device, the data exchange bit rate of the transfer device being greater than that of the circuit providing access to the memory of the insertable object, the system comprising means to limit the bit rate of useful elements in the apparent bit rate of data elements entering and leaving the transfer device, so that it is compatible with the bit rate leaving and entering the circuit providing access to the memory of the insertable object. The system can be applied notably to the exchange of data elements between a microcomputer and an electronic card that can be inserted into the disk drive of the microcomputer or into a memory card reader.
43 Citations
13 Claims
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1. A system for the exchange of data between at least one movable, insertable electronic object and at least one transfer device,
said insertable object comprising an electronic memory associated with an access circuit and coupling means enabling the temporary coupling of said insertable object with said transfer device; -
said transfer device comprising means for the transfer of data between the memory of the insertable object and the transfer device; said insertable object emulating a magnetic recording support with respect to a magnetic read/write head of the transfer device, the data exchange bit rate of the transfer device being greater than that of the access circuit of the memory of the insertable object, wherein said system comprises means to limit the bit rate of useful data in the apparent bit rate of data entering and leaving the transfer device, so that it is compatible with the bit rate leaving and entering the access circuit of the memory of the insertable object, said means to limit the bit rate consisting of at least one means belonging to the group including the redundant coding and the n times (n≧
2) replication of at least certain of said useful data, in the flow of data entering and leaving and the transfer device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An insertable object used in a system for the exchange of data between said insertable object and a transfer device, comprising an electronic memory associated with an access circuit and coupling means enabling the temporary coupling of said insertable object with said transfer device, and emulating a magnetic recording support with respect to a magnetic read/write head of the transfer device, the data exchange bit rate of the transfer device being greater than that of the access circuit of the memory of the insertable object, wherein said insertable object comprises means to limit the bit rate of useful data in the apparent bit rate of data entering and leaving the transfer device, so that it is compatible with the bit rate leaving and entering the access circuit of the memory of the insertable object, said means to limit the bit rate consisting of at least one means belonging to the group including the redundant coding and the n times (n≧
- 2) replication of at least certain of said useful data, in the flow of data entering and leaving the transfer device.
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12. A transfer device usable in a system for exchange between said transfer device and an insertable object, comprising means for the transfer of data between a memory of the insertable object and the transfer device, the data exchange bit rate of the transfer device being greater than that an access circuit of the memory of the insertable object, wherein said transfer device comprises means to limit the bit rate of useful data in the apparent bit rate of data entering and leaving the transfer device, so that it is compatible with the bit rate leaving and entering the access circuit of the memory of the insertable object, said means to limit the bit rate consisting of at least one means belonging to the group including the redundant coding and the n times (n≧
- 2) replication of at least certain of said useful data, in the flow of data entering and leaving the transfer device.
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13. A system for the exchange of data between at least one movable, insertable electronic object and at least one transfer device,
said insertable object comprising an electronic memory associated with an access circuit and coupling means enabling the temporary coupling of said insertable object with said transfer device; -
said transfer device comprising means for the transfer of data between the memory of the insertable object and the transfer device; said insertable object emulating a magnetic recording support with respect to a magnetic read head of the transfer device, the data exchange bit rate of the transfer device being greater than that of the access circuit of the memory of the insertable object, wherein said system comprises means to limit the bit rate of useful data in the apparent bit rate of data entering and leaving the transfer device, so that it is compatible with the bit rate leaving and entering the access circuit of the memory of the insertable object, said means to limit the bit rate consisting of at least one means belonging to the group including the redundant coding and the n times (n≧
2) replication of at least certain of said useful data in the flow of data entering and leaving the transfer device.
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Specification