Partial permanent write protection of a memory card and partially permanently write protected memory card
DC
First Claim
Patent Images
1. A method comprising:
- write protecting at least one part of a memory by a command;
setting at least one bit in a data register configured to indicate that permanent write protection of the at least one part of the memory is allowed in order to redefine the command to allow permanent write protection, that cannot be un-protected by a command, of the at least one part of the memory; and
executing the command in order to permanently write protect said at least one part of the memory.
3 Assignments
Litigations
2 Petitions
Accused Products
Abstract
This invention relates to a method permanently write protecting a portion of a memory card. According to the invention a bit indicating permanent write protection or permanent write protection of a portion of the memory card is set in the specific data register of the memory card to indicate that all the write protect groups protected with write protecting command are permanently write protected. In another embodiments of the invention special commands are used to control the write protection of the portion of the memory card. This invention also relates to a partially permanently write protected memory card. The invention further relates to an electronic device, a software, a system and a module utilizing the method of the invention.
16 Citations
25 Claims
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1. A method comprising:
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write protecting at least one part of a memory by a command; setting at least one bit in a data register configured to indicate that permanent write protection of the at least one part of the memory is allowed in order to redefine the command to allow permanent write protection, that cannot be un-protected by a command, of the at least one part of the memory; and executing the command in order to permanently write protect said at least one part of the memory. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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write protecting a first part of a memory by a first command; setting a second command to only allow access to a second part of the memory based on a bit in a data register configured to indicate that permanent write protection of the first part of the memory is allowed; and executing the second command in order to permanently write protect said first part of the memory. - View Dependent Claims (9, 10, 11)
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12. An apparatus comprising:
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an interface controller arranged to write protect at least one part of a memory of said apparatus by a command; a data register arranged to define at least one bit to indicate that permanent write protection of the at least one part of the memory is allowed; a controller arranged to set the at least one bit in order to redefine the command to allow permanent write protection, that cannot be un-protected by a command, of the at least one part of the memory of said apparatus, and the controller arranged to execute the command in order to permanently write protect said at least one part of the memory. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19)
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20. An apparatus comprising:
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an interface controller arranged to write protect a first part of a memory of said apparatus by a first command; a data register arranged to define at least one bit to indicate that permanent write protection of the first part of the memory is allowed; a controller arranged to set a second command to only allow access to a second part of the memory, and the controller arranged to execute the second command in order to permanently write protect the first part of the memory. - View Dependent Claims (21)
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22. An apparatus comprising:
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a user interface; a central processor; an internal memory; an interface controller arranged to write protect at least one part of the internal memory by a command; a data register arranged to define at least one bit to indicate that permanent write protection of the at least one part of the internal memory is allowed; a controller arranged to set the at least one bit in order to redefine the command to allow permanent write protection, that cannot be un-protected by a command, of the at least one part of the internal memory, and the controller arranged to execute the command in order to permanently write protect said at least one part of the internal memory. - View Dependent Claims (23, 24)
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25. A memory device having stored thereon instructions that, when executed, perform:
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write protecting at least one part of a memory by a command; setting at least one bit in a data register configured to indicate that permanent write protection of the at least one part of the memory is allowed in order to redefine the command to allow permanent write protection, that cannot be un-protected by a command, of the at least one part of the memory; and executing the command in order to permanently write protect said at least one part of the memory.
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Specification
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Litigation Data
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Current AssigneeMemory Technologies LLC (Pendrell Corporation)
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Original AssigneeNokia Corporation
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InventorsAhvenainen, Marko T, Mylly, Kimmo, Hyvonen, Jani
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Primary Examiner(s)Bragdon, Reginald G
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Assistant Examiner(s)CARDWELL, ERIC
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Application NumberUS11/176,669Publication NumberTime in Patent Office1,943 DaysField of SearchNoneUS Class Current711/163CPC Class CodesG06F 12/1433 for a module or a part of a...
