Method of and system for file transfer

• US 20050060279A1
• Filed: 09/17/2003
• Published: 03/17/2005
• Est. Priority Date: 09/17/2003
• Status: Abandoned Application

• Current Assignee: Sony Corporation (Sony Group Corp.), Sony Electronics Inc. (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.), Sony Electronics Inc. (Sony Group Corp.)
• Inventors: Xue, Xin
• Application Number:
  US10/665,698
• Publication Number:
  US 20050060279A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/182 Distributed file systems

Abstract

The present invention includes a method and system for transferring files between a personal computer (PC) and a personal digital assistant (PDA). In the absence of the file stream manager of the PDA being available to the conduit, the present invention defines a mechanism to effectuate file conversion and transfer through the conduit without the file stream manager. The present invention includes a method and system that generates a file in the PC and allocates a record size such that the file is read and written into separate data records of the allocated size before transfer to the PDA. An application information block is generated to identify the number of records and the size of each record. Upon receiving the records in the PDA, the method and system of the present invention utilizes the database manager to read and the file stream manager to write each record into a storage heap before the file and the file stream manager are closed.

Claims

1. A method of transferring an application file from a personal computer to a personal digital assistant through a conduit, the method comprising:

a. generating a file corresponding to the application file;

b. reading a portion of the file into a record, wherein the record is a predetermined size;

c. copying the record to a record buffer; and

d. transmitting the records in the record buffer to the personal digital assistant,

wherein reading a portion of the file into a record is repeated until all of the file is read into a set of records.

2. The method according to claim 1 wherein an application information block is transmitted with the contents of the record buffer.

3. The method according to claim 1 further comprising allocating the predetermined record size and calculating the number of records prior to reading a portion of the file into a record.

4. The method according to claim 3 wherein the predetermined record size is less than 64 KB.

5. The method according to claim 2 wherein the application information block includes:

a. size of the records being transmitted; and

b. number of the records being transmitted.

6. The method according to claim 1 wherein when the contents of the record buffer are received in the personal digital assistant, the method further comprising:

a. reading the application information block;

b. opening the records;

c. reading each of the records of the database;

d. writing each of the records of the database to a storage heap; and

e. closing the file.

7. A system for transferring an application file from a personal computer to a personal digital assistant via a conduit, the system comprising:

a. means for generating a file corresponding to the application file;

b. a first means for reading a portion of the file into a record, wherein the record is a predetermined size;

c. means for copying the record to a record buffer; and

d. means for transmitting the records in the record buffer to the personal digital assistant,

wherein the first means for reading operates until all of the file is read into a set of records.

8. The system according to claim 7 wherein an application information block is transmitted with the contents of the record buffer.

9. The system according to claim 7 further comprising means for allocating the predetermined record size and calculating the number of records.

10. The system according to claim 9 wherein the predetermined record size is less than 64 KB.

11. The system according to claim 8 wherein the application information block includes:

a. size of the records being transmitted; and

b. number of the records being transmitted.

12. The system according to claim 7 wherein when the contents of the record buffer are received in the personal digital assistant, the system further comprises:

a. a second means for reading the application information block;

b. means for opening the records with a database manager;

c. a third means for reading each of the records of the file with the database manager;

d. means for writing each of the records of the file to a storage heap with a file stream manager; and

e. means for closing the file and the file stream manager.

13. A system for transferring an application file via a conduit, the system comprising:

a. a personal computer configured to generate a file corresponding to the application file, wherein a portion of the file is read into a record, wherein the record is a predetermined size, and further wherein the file is read until all of the file is read into a set of records; and

b. a record buffer configured to receive the set of records, where the personal computer is configured to transmit contents of the record buffer to a personal digital assistant.

14. The system according to claim 13 wherein an application information block is transmitted with the contents of the record buffer.

15. The system according to claim 13 wherein the predetermined record size is allocated and the number of records is calculated prior to reading the file into the set of records.

16. The system according to claim 13 wherein the predetermined record size is less than 64 KB.

17. The system according to claim 14 wherein the application information block includes:

a. size of the records being transmitted; and

b. number of the records being transmitted.

18. The system according to claim 13 wherein the contents of the record buffer are received in a personal digital assistant, the system further comprising:

a. a database manager configured to read the application information block, and further configured to open each of the set of records; and

b. a storage heap configured to receive each of the set of records wherein each of the set of records is written to the file heap by a file stream manager,

further wherein the file and the file stream manager are closed after the set of records are written to the storage heap.

19. A method of transferring an application file from a personal computer to a personal digital assistant via a conduit, the method comprising:

a. generating a file corresponding to the application file;

b. reading a portion of the file into a record, wherein the record is a predetermined size;

c. copying the record to a record buffer;

d. transmitting the contents of the record buffer to the personal digital assistant, wherein reading a portion of the file into a record is repeated until all of the file is read into a set of records, and further wherein an application information block is transmitted with the contents of the record buffer;

e. receiving the contents of the record buffer in the personal digital assistant;

f. reading the application information block;

g. opening the records with a database manager;

h. reading each of the records of the file with the database manager;

j. writing each of the records of the file to a storage heap with a file stream manager;

and

k. closing the file and the file stream manager.

20. The method according to claim 19 further comprising allocating the predetermined record size and calculating the number of records prior to the reading a portion of the file into a record.

21. The method according to claim 20 wherein the predetermined record size is less than 64 KB.

22. The method according to claim 19 wherein the application information block includes:

a. size of the records being transmitted; and

b. number of the records being transmitted.

23. A system for transferring an application file via a conduit, the system comprising:

a. a personal computer configured to generate a file corresponding to the application file, wherein a portion of the file is read into a record, wherein the record is a predetermined size, and further wherein the file is read until all of the file is read into a set of records;

b. a record buffer configured to receive the set of records, where the personal computer is configured to transmit contents of the record buffer through a conduit, and further wherein an application information block is transmitted with the contents of the record buffer; and

c. a personal digital assistant configured to receive the contents of the second buffer, the personal digital assistant including;

i. a database manager configured to read the application information block, and further configured to open each of the set of records; and

ii. a storage heap configured to receive each of the set of records wherein each of the set of records is written to the file heap by a file stream manager, and further wherein the file and the file stream manager are closed after the set of records are written to the storage heap.

24. The system according to claim 23 wherein the predetermined record size is allocated and the number of records is calculated prior to reading the file into the set of records.

25. The system according to claim 24 wherein the predetermined record size is less than 64 KB.

26. The system according to claim 23 wherein the application information block includes:

a. size of the records being transmitted; and

b. number of the records being transmitted.