Method and system for providing memory-based device emulation

• US 6,715,043 B1
• Filed: 06/18/1999
• Issued: 03/30/2004
• Est. Priority Date: 03/19/1999
• Status: Expired due to Term

• Current Assignee: Pegatron Corporation
• Original Assignee: Phoenix Technologies Limited (Pharaoh Acquisition LLC)
• Inventors: Stevens, Curtis E.
• Primary Examiner(s): BATAILLE, PIERRE MICHE
• Application Number:
  US09/336,307
• Time in Patent Office: 1,747 Days
• Field of Search: 703/13, 703/24, 703/27, 711/154, 711/203, 711/151, 711/112, 711/114, 711/111, 711/100, 714/6, 714/11, 709/219, 709/224
• US Class Current: 711/154
• CPC Class Codes: G06F 3/0607 by facilitating the process of upgrading existing storage systems, e.g. for improving compatibility between host and storage device
• CPC Class Codes: G06F 3/0664 at device level, e.g. emulation of a storage device or system
• CPC Class Codes: G06F 3/0679 Non-volatile semiconductor memory device, e.g. flash memory, one time programmable memory [OTP]
• CPC Class Codes: G06F 9/455 Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines

Abstract

The present invention is a method and system for accessing at least one emulated readable storage in a processor-based system. The system comprises a memory for storing instruction sequences by which the processor-based system is processed. The memory has at least one readable emulated storage location. A processor is coupled to the memory, and the stored instruction sequences cause the processor to (a) detect an access to at least one readable storage element; (b) transfer the access to the at least one readable storage element to an access to at least one readable emulated storage location; and (c) process an instruction sequence corresponding to the access to the at least one readable storage element.

Claims

1. In a computer system having a user computer in communication with a remote service computer having access to a database identifying information available to the service computer, a computer implemented method for transferring information to the user computer, comprising:

(a) detecting, using an access monitor program, an access by an application program to at least one readable hardware storage element in the user computer;

(b) transferring, using the access monitor program, the access to the at least one readable hardware storage element to an access to at least one readable emulated storage location of the user computer, where said at least one readable emulated storage location is separate from said at least one readable hardware storage element;

(c) processing an instruction sequence corresponding to the access by the application program to the at least one readable hardware storage element;

(d) transferring, when the access is a read request, data from the readable emulated storage location to a predetermined location on the user computer from which the application program accesses the data;

(e) establishing a communications link between the user computer and the service computer; and

(f) presenting at the user computer, information available to the user computer.

2. The method of claim 1, wherein in (a), the contents of the at least one hardware storage element includes the application program, and wherein the method further comprising:

initiating, by the application program, a transfer of software from the service computer to the user computer; and

receiving, by the user computer, said software, wherein the software comprises at least one program that collects system information regarding the user computer.

3. The method of claim 2, further comprising:

providing the system information to the service computer; and

presenting, by service computer to the user computer, additional information based on the system information.

4. The method of claim 1, wherein in (a), the at least one readable storage element is a memory-based device.

5. The method of claim 4, wherein in (a) the memory-based device is selected from a group consisting of:

a compact disk drive, a digital disk drive, a digital video disk (DVD) drive, a solid state memory device, a floppy disk drive, a hard disk drive, a magneto-optical disk drive, a tape drive, a zip drive, a jazz drive, a high density floppy drive, a high capacity removable media device, a low capacity media device, and a combination high and low capacity removable media device.

6. The method of claim 1, wherein in (b) the at least one readable emulated storage location is an emulated read-only memory.

7. The method of claim 6, wherein in (b) the emulated read-only memory is a flash memory.

8. The method of claim 1, wherein (b) comprises:

(b)(1) generating an access fault in response to the access to the at least one readable hardware storage element; and

(b)(2) transferring, using the access monitor program, the access to the at least one readable hardware storage element to an access to the at least one readable emulated storage location.

9. The method of claim 8, wherein the at least one readable emulated storage location is an emulated read-only memory, the at least one readable hardware storage element is located in a memory-based device, the predetermined location is in a memory of the user computer, and wherein the method further comprises:

allocating space in the memory of the user computer for the emulated read-only memory; and

allocating space in the memory of the user computer to store the data transferred from the emulated read-only memory due to the read request by the application program.

10. An information processing system having a user computer in communication with a remote service computer having access to a database identifying information available to the service computer, comprising:

a memory for storing instruction sequences by which the system is processed, the memory having at least one readable emulated storage location; and

a processor coupled to said memory, the processor executes the stored instruction sequences;

wherein the stored instruction sequences cause the processor to;

(a) detect, using an access monitor program, an access by an application program to at least one readable hardware storage element in the user computer;

(b) transfer, using the access monitor program, the access to the at least one readable hardware storage element to an access to the at least one readable emulated storage location, where said at least one readable emulated storage location is separate from said at least one readable hardware storage element;

(c) process an instruction sequence corresponding to the access by the application program to the at least one readable hardware storage element, to establish a communications link between the user computer and the service computer;

(d) transferring, when the access is a read request, data from the readable emulated storage location to a predetermined location on the user computer from which the application program accesses the data; and

(e) present at the user computer, information available to the user computer.

11. The system of claim 10, wherein in (a), the contents of the at least one readable hardware storage element includes the application program having instruction sequences that further cause the processor to:

initiate, by the application program, a transfer of software from the service computer to the user computer; and

receive, by the user computer, said software, wherein the software comprises at least one program that collects system information regarding the user computer.

12. The system of claim 11, wherein the instruction sequences further cause the processor to:

provide the system information to the service computer; and

to cause the service computer to present additional information to the user computer, based on the system information.

13. The system of claim 10, wherein the at least one readable storage element is a memory-based device.

14. The system of claim 13, wherein the memory-based device is selected from a group consisting of:

a compact disk drive, a digital disk drive, a digital video disk (DVD) drive, a solid state memory device, a floppy disk drive, a hard disk drive, a magneto-optical disk drive, a tape drive, a zip drive, a jazz drive, a high density floppy drive, a high capacity removable media device, a low capacity media device, and a combination high and low capacity removable media device.

15. The system of claim 10, wherein the at least one readable emulated storage location is an emulated read-only memory.

16. The system of claim 15, wherein the emulated read-only memory is a flash memory.

17. The system of claim 10, wherein (b) comprises:

(b)(1) generate an access fault in response to the access to the at least one readable hardware storage element; and

(b)(2) transfer, using the access monitor program, the access to the at least one readable hardware storage element to an access to the at least one readable emulated storage location.

18. The system of claim 17, wherein the at least one readable emulated storage location is an emulated read-only memory, the at least one readable hardware storage element is located in a memory-based device, the predetermined location is in the memory, and wherein the instructions further cause the processor to:

allocate space in the memory for the emulated read-only memory; and

allocate space in the memory to store the data transferred from the emulated read-only memory due to the read request by the application program.

19. An information processing system having a user computer in communication with a remote service computer, the system comprising:

a memory for storing instruction sequences by which the system is processed; and

a processor coupled to said memory, the processor executes the stored instruction sequences to;

allocate space in the memory for an emulated read-only memory;

detect, using an access monitor program;

an access by an application program to at least one readable hardware storage element in the user computer;

transfer the access to the at least one readable hardware storage element to said emulated read-only memory;

establish a communications link between the user computer and the service computer;

transferring, when the access is a read request, data from the emulated read-only memory to a predetermined location on the user computer from which the application program accesses the data; and

present at the user computer, information available to the user computer.

20. The system of claim 19, wherein the at least one readable hardware storage element includes the application program, the method further comprising:

initiating, by the application program, a transfer of software from the service computer to the user computer; and

receiving, by the user computer, said software, wherein the software comprises at least one program that collects system information regarding the user computer.

21. The system of claim 20, further comprising:

providing the system information to the service computer; and

presenting, by the service computer to the user computer, additional information based on the system information.

22. The system of claim 19, wherein the at least one readable hardware storage element is a memory-based device selected from the group consisting of:

a compact disk drive, a digital disk drive, a digital video disk drive, a solid state memory device, a floppy drive, a hard disk drive, a magneto-optical disk drive, a tape drive, a zip drive, a jazz drive, a high density floppy drive, a high capacity removable media device, a low capacity media device, and a combination high and low capacity removable media device.

23. The system of claim 19, wherein the emulated read-only memory is a flash memory.

24. The system of claim 19, wherein transferring the access to the at least one readable hardware storage element further comprises generating a fault in response to the access to the at least one readable hardware storage location of the user computer.

25. In a computer system having a user computer in communication with a remote service computer, the method comprising:

allocating space in a memory of the user computer for an emulated read-only memory;

detecting, using an access monitor program, an access by an application program to at least one readable hardware storage element in the user computer;

transferring the access to the at least one readable hardware storage element to an access to the emulated read-only memory;

transferring, when the access is a read request, data from the emulated read-only memory to a predetermined location on the user computer from which the application program accesses the data;

allocating space in said memory to store the data transferred from the emulated read-only memory due to the read request by the application program;

establishing a communications link between the user computer and the service computer; and

presenting at the user computer, information available to the user computer.

26. The method of claim 25, wherein the at least one readable hardware storage element includes the application program, the method further comprising:

initiating, by the application program, a transfer of software from the service computer to the user computer; and

receiving, by the user computer, said software, wherein the software comprises at least one program that collects system information regarding the user computer.

27. The method of claim 26, further comprising:

providing the system information to the service computer; and

presenting, by the service computer to the user computer, additional information based on the system information.

28. The method of claim 25, wherein the at least one readable hardware storage element is a memory-based device selected from the group consisting of:

a compact disk drive, a digital disk drive, a digital video disk drive, a solid state memory device, a floppy drive, a hard disk drive, a magneto-optical disk drive, a tape drive, a zip drive, a jazz drive, a high density floppy drive, a high capacity removable media device, a low capacity media device, and a combination high and low capacity removable media device.

29. The method of claim 25, wherein the emulated read-only memory is a flash memory.

30. The method of claim 25, wherein transferring the access to the at least one readable hardware storage element further comprises generating a fault in response to the access to the at least one readable hardware storage location of the user computer.

31. A computer program product, comprising:

a computer usable medium having computer program code embodied therein for accessing at least one readable storage in a processor-based system, the computer program product having;

(a) computer readable program code embodied in an access monitor program, for detecting an access by the application program to at least one readable hardware storage element;

(b) computer readable program code embodied in the access monitor program for transferring the access to the at least one readable hardware storage element to an access to at least one readable emulated storage location, where said at least one readable emulated storage location is separate from said at least one readable hardware storage element;

(c) computer readable program code for processing an instruction sequence corresponding to the access by the application program to the at least one readable hardware storage element;

(d) transferring, when the access by the application program is a read request, data from the readable emulated storage location to a predetermined location from which the application program accesses the data;

(e) computer readable program code for establishing a communications link between the user computer and the service computer; and

(f) computer readable program code for presenting at the user computer, information available to the user computer.

32. The computer program product of claim 31, wherein in (a), the contents of the at least one readable hardware storage element includes the application program, further comprising:

computer readable program code for initiating, by the application program, a transfer of software from the service computer to the user computer; and

computer readable program code for receiving, by the user computer, said software, wherein the software comprises at least one program that collects system information regarding the user computer.

33. The computer program product of claim 32, further comprising:

computer readable program code for providing the system information to the service computer; and

computer readable program code for presenting, by the service computer to the user computer, additional information based on the system information.