Middleware filter agent between server and PDA

• US 7,925,790 B2
• Filed: 09/17/2003
• Issued: 04/12/2011
• Est. Priority Date: 09/17/2003
• Status: Expired due to Fees

• 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: Sato, Naoyuki, Xue, Xin
• Primary Examiner(s): Nguyen; Van H
• Application Number:
  US10/666,402
• Publication Number:
  US 20050060435A1
• Time in Patent Office: 2,764 Days
• Field of Search: 709/248, 709/203, 709/219, 709/223
• US Class Current: 709/248
• CPC Class Codes: H04L 63/0245 Filtering by information in the payload
• CPC Class Codes: H04L 67/1095 Replication or mirroring of data, e.g. scheduling or transport for data synchronisation between network nodes
• CPC Class Codes: H04L 67/2871 Implementation details of single intermediate entities
• CPC Class Codes: H04L 67/2895 Intermediate processing functionally located close to the data provider application, e.g. reverse proxies
• CPC Class Codes: H04L 67/561 Adding application-functional data or data for application control, e.g. adding metadata
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04L 9/40 Network security protocols

Abstract

A content server provides content to a first network device during a data synchronization between the two devices. A middleware filter selectively filters content provided by the content server such that selected content is provided to the first network device. The middleware filter is included within a second network device coupled between the content server and the first network device. The second network device acts as a proxy for the first network device to receive the content provided by the content server. The content is provided from the content server according to a subscription service between the content server and the first network device. The first network device is preferably a personal digital assistant (PDA) and the second network device is preferably a personal computer. Alternatively, the content server is coupled to the first network device, without the second network device coupled in between. In the alternative case, the middleware filter is included within the content server, and the content is selectively provided from the middleware filter, on the content server, to the first network device.

Claims

1. A network of devices to filter synchronized data, the network of devices comprising:

a. a content server to store content;

b. a first network device;

c. a second network device; and

d. a middleware filter included within the second network device, the second network device coupled to the first network device and to the content server such that during a data synchronization, content is received by the middleware filter from the content server according to the data synchronization and the middleware filter is programmed to selectively filter the content resulting in filtered content and send only the filtered content to the first network device, wherein the middleware filter selectively filters the content in response to meta data within the content, wherein the meta data comprises a data type of the content,

wherein the middleware filter reads the meta data of the content received from the content server and sends the content to the first network device if the data type of the read meta data matches an authorized data type associated with the first network device,

wherein the middleware filter stores the authorized data type of the first network device, and

wherein the meta data is added to the content by the content server.

2. The network of devices of claim 1 wherein the meta data includes an authorized network device type.

3. The network of devices of claim 2 wherein the middleware filter reads the meta data of the content received from the content server and sends the content to the first network device if the authorized network device type of the read meta data matches a network device type associated with the first network device.

4. The network of devices of claim 3 wherein the middleware filter stores the network device type of the first network device.

5. The network of devices of claim 1 wherein the meta data includes data synchronization information corresponding to the data synchronization.

6. The network of devices of claim 5 further comprising a display coupled to the middleware filter to display the data synchronization information.

7. The network of devices of claim 1 wherein the data synchronization is a one-way data synchronization.

8. The network of devices of claim 1 wherein the data synchronization is a bi-directional data synchronization.

9. The network of devices of claim 1 wherein the second network device comprises a personal computer.

10. The network of devices of claim 1 wherein the first network device comprises a personal digital assistant.

11. The network of devices of claim 1 wherein the content server comprises a web server.

12. The network of devices of claim 1 wherein the second network device comprises a server.

13. A network of devices to filter synchronized data, the network of devices comprising:

a. a content server to store content;

b. a personal digital assistant; and

c. a personal computer coupled to the personal digital assistant and to the content server, wherein the personal computer includes a middleware filter programmed such that during a data synchronization, content received by the personal computer from the content server according to the data synchronization is selectively filtered according to the middleware filter, resulting in filtered content, wherein only the filtered content is sent to the personal digital assistant by the personal computer, wherein the middleware filter selectively filters the content in response to meta data within the content, wherein the meta data comprises a data type of the content,

wherein the personal computer reads the meta data of the content received from the content server and sends the content to the personal digital assistant if the data type of the read meta data matches an authorized data type associated with the personal digital assistant,

wherein the personal computer stores the authorized data type of the personal digital assistant, and

wherein the meta data is added to the content by the content server.

14. The network of devices of claim 13 wherein the meta data includes an authorized network device type.

15. The network of devices of claim 14 wherein the personal computer reads the meta data of the content received from the content server and sends the content to the personal digital assistant if the authorized network device type of the read meta data matches a network device type associated with the personal digital assistant.

16. The network of devices of claim 15 wherein the personal computer stores the network device type of the personal digital assistant.

17. The network of devices of claim 13 wherein the meta data includes data synchronization information corresponding to the data synchronization.

18. The network of devices of claim 17 wherein the personal computer displays the data synchronization information.

19. The network of devices of claim 13 wherein the data synchronization is a one-way data synchronization.

20. The network of devices of claim 13 wherein the data synchronization is a bi-directional data synchronization.

21. The network of devices of claim 13 wherein the content server comprises a web server.

22. A method of filtering synchronized data, the method comprising:

a. determining content to be sent from a content server to a first network device during a data synchronization;

b. sending the content from the content server to a second network device coupled between the content server and the first network device, wherein the second network device includes a middleware filter;

c. selectively filtering the content according to the middleware filter in response to meta data contained within the content, wherein the meta data comprises a data type of the content; and

d. sending only the filtered content from the second network device to the first network device,

wherein selectively filtering the content includes reading the meta data of the content received from the content server by the middleware filter, matching the data type of the read meta data to an authorized data type associated with the first network device, and sending the content to the first network device if the data type of the read meta data matches the authorized data type associated with the first network device,

wherein the middleware filter stores the authorized data type of the first network device, and

wherein the meta data is added to the content by the content server.

23. The method of claim 22 wherein the meta data includes an authorized network device type.

24. The method of claim 23 wherein selectively filtering the content includes reading the meta data of the content received from the content server by the middleware filter, matching the authorized network device type of the read meta data to a network device type associated with the first network device, and sending the content to the first network device if the authorized network device type of the read meta data matches the network device type associated with the first network device.

25. The method of claim 24 wherein the middleware filter stores the network device type of the first network device.

26. The method of claim 22 wherein the meta data includes data synchronization information corresponding to the data synchronization.

27. The method of claim 26 further comprising displaying the data synchronization information.

28. The method of claim 22 wherein the data synchronization is a one-way data synchronization.

29. The method of claim 22 wherein the data synchronization is a bi-directional data synchronization.

30. The method of claim 22 wherein the second network device comprises a personal computer.

31. The method of claim 22 wherein the first network device comprises a personal digital assistant.

32. The method of claim 22 wherein the content server comprises a web server.

33. The method of claim 22 wherein the second network device comprises a server.

34. A method of filtering synchronized data, the method comprising:

a. determining content to be sent from a content server to a first network device during a data synchronization, wherein the content server includes a middleware filter;

b. selectively filtering the determined content according to the middleware filter in response to meta data contained within the content, wherein the meta data comprises a data type of the content; and

c. sending only the filtered content from the content server to the first network device,

wherein selectively filtering the determined content includes reading the meta data of the determined content by the middleware filter, matching the data type of the read meta data to an authorized data type associated with the first network device, and sending the determined content to the first network device if the data type of the read meta data matches the authorized data type associated with the first network device,

wherein the middleware filter stores the authorized data type of the first network device, and

wherein the meta data is added to the content by the content server.

35. The method of claim 34 wherein the meta data includes an authorized network device type.

36. The method of claim 35 wherein selectively filtering the determined content includes reading the meta data of the determined content by the middleware filter, matching the authorized network device type of the read meta data to a network device type associated with the first network device, and sending the determined content to the first network device if the authorized network device type of the read meta data matches the network device type associated with the first network device.

37. The method of claim 36 wherein the middleware filter stores the network device type of the first network device.

38. The method of claim 34 wherein the meta data includes data synchronization information corresponding to the data synchronization.

39. The method of claim 38 further comprising displaying the data synchronization information.

40. The method of claim 34 wherein the data synchronization is a one-way data synchronization.

41. The method of claim 34 wherein the data synchronization is a bi-directional data synchronization.

42. The method of claim 34 wherein the first network device comprises a personal digital assistant.

43. The method of claim 34 wherein the content server comprises a web server.

44. An apparatus including at least one processor to filter synchronized data, the apparatus comprising:

a middleware filter programmed such that during a data synchronization, content is received by the apparatus from a content server according to the data synchronization, and the received content is selectively sent to a network device by the apparatus according to the middleware filter, wherein the received content is selectively filtered by the middleware filter and wherein only the filtered content is sent to the network device in response to meta data within the received content, wherein the meta data comprises a data type of the received content,

wherein the middleware filter reads the meta data of the content received from the content server and sends the content to the network device if the data type of the read meta data matches an authorized data type associated with the network device,

wherein the middleware filter stores the authorized data type of the network device, and

wherein the meta data is added to the content by the content server.

45. The apparatus of claim 44 wherein the meta data includes an authorized network device type.

46. The apparatus of claim 45 wherein the middleware filter reads the meta data of the content received from the content server and sends the content to the network device if the authorized network device type of the read meta data matches a network device type associated with the network device.

47. The apparatus of claim 46 wherein the middleware filter stores the network device type of the network device.

48. The apparatus of claim 44 wherein the meta data includes data synchronization information corresponding to the data synchronization.

49. The apparatus of claim 48 further comprising a display to display the data synchronization information.

50. The apparatus of claim 44 wherein the data synchronization is a one-way data synchronization.

51. The apparatus of claim 44 wherein the data synchronization is a bi-directional data synchronization.

52. The apparatus of claim 44 wherein the apparatus comprises a personal computer.

53. The apparatus of claim 44 wherein the network device comprises a personal digital assistant.

54. The apparatus of claim 44 wherein the content server comprises a web server.

55. The apparatus of claim 44 wherein the apparatus comprises a server.

56. An apparatus for filtering synchronized data comprising:

a. means for determining content to be sent from a content server to a first network device during a data synchronization;

b. means for sending the content from the content server to a second network device coupled between the content server and the first network device, wherein the second network device includes a middleware filter;

c. means for selectively filtering the content in response to meta data contained within the content, wherein the meta data comprises a data type of the content; and

d. means for sending only the filtered content from the second network device to the first network device,

wherein selectively filtering the content includes reading the meta data of the content received from the content server by the middleware filter, matching the data type of the read meta data to an authorized data type associated with the first network device, and sending the content to the first network device if the data type of the read meta data matches the authorized data type associated with the first network device, wherein the middleware filter stores the authorized data type of the first network device, and

wherein the meta data is added to the content by the content server.

57. A network of devices to filter synchronized data, the network of devices comprising:

a. a content server to store content;

b. a first network device, wherein a communications channel is established for communicating content from the content server to the first network device; and

c. a middleware filter coupled to the first network device and to the content server such that during a data synchronization, all content sent over the communications channel from the content server is received by the middleware filter according to the data synchronization and the middleware filter is programmed to selectively filter the content in response to meta data containing device specifications within the content resulting in filtered content and send only the filtered content to the first network device, wherein the meta data comprises a data type of the content,

wherein the middleware filter reads the meta data of the content received from the content server and sends the content to the first network device if the data type of the read meta data matches an authorized data type associated with the first network device,

wherein the middleware filter stores the authorized data type of the first network device, and

wherein the meta data is added to the content by the content server.

58. A network of devices to filter synchronized data, the network of devices comprising:

a. a content server to store content;

b. a first network device; and

c. a second network device coupled between the first network device and the content server, the second network device comprising a middleware filter, such that during a data synchronization, content is received by the middleware filter from the content server according to the data synchronization and the middleware filter is programmed to selectively filter the content in response to meta data within the content, the metadata comprising an attribute-value pair, resulting in filtered content and send only the filtered content to the first network device, wherein the meta data comprises a data type of the content, and further wherein the first network device and the second network device are local and the content server is remote from the first network device and the second network device,

wherein the middleware filter reads the meta data of the content received from the content server and sends the content to the first network device if the data type of the read meta data matches an authorized data type associated with the first network device, wherein the middleware filter stores the authorized data type of the first network device, and

wherein the meta data is added to the content by the content server.

59. A method of filtering synchronized data, the method comprising:

a. determining content to be sent from a content server to a first network device during a bi-directional data synchronization;

b. sending the content from the content server to a second network device coupled between the content server and the first network device, wherein the second network device includes a middleware filter;

c. selectively filtering the content according to the middleware filter in response to meta data contained within the content, wherein the meta data comprises a data type of the content; and

d. sending only the filtered content from the second network device to the first network device,

wherein selectively filtering the content includes reading the meta data of the content received from the content server by the middleware filter, matching the data type of the read meta data to an authorized data type associated with the first network device, and sending the content to the first network device if the data type of the read meta data matches the authorized data type associated with the first network device,

wherein the middleware filter stores the authorized data type of the first network device, and

wherein the meta data is added to the content by the content server.

60. A network of devices to filter synchronized data, the network of devices comprising:

a. a content server to store content;

b. a first network device; and

c. a middleware filter coupled to the first network device and to the content server such that during a bi-directional data synchronization, content is received by the middleware filter from the content server according to the bi-directional data synchronization and the middleware filter is programmed to selectively filter the content resulting in filtered content and send only the filtered content to the first network device, wherein the middleware filter selectively filters the content in response to meta data within the content, wherein the meta data comprises a data type of the content,

wherein the middleware filter reads the meta data of the content received from the content server and sends the content to the first network device if the data type of the read meta data matches an authorized data type associated with the first network device,

wherein the middleware filter stores the authorized data type of the first network device, and

wherein the meta data is added to the content by the content server.