1. A mechanism for fixing together first and second parts and comprising:
first and second guides provided respectively in or attached to the first and second parts; and
first and second magnetic components coupled respectively to the first and second guides such that the first magnetic component is rotatable with the first guide and with the first part and the second magnetic component cannot rotate relative to the second guide, the magnetic components being moveable axially and rotationally with respect to each other and having magnetic poles oriented such that rotation of said first magnetic component causes relative axial movement of the magnetic components between a locking position in which one of the magnetic components straddles the two guides and an unlocking position in which it does not straddle the two guides
wherein one of the magnetic components is fixed axially to the guide to which it is coupled and the other of the magnetic components is able to move axially with respect to the guide to which it is coupled.
2. (canceled)
3. A mechanism according to claim 1, wherein the magnetic component that is able to move axially with respect to the guide to which it is coupled, is said first magnetic component.
4. (canceled)
5. A mechanism according to claim 1, wherein the guides provide internal andor external axial guidance for said first magnetic component.
6. A mechanism according to claim 1, wherein the magnetic components present opposed magnetic faces, each of the faces comprising two or more magnetic poles.
7. A mechanism according to claim 6, one or each of the magnetic components having its magnetic axes aligned linearly with the corresponding guide.
8. A mechanism according to claim 1 and comprising one or more further guides aligned with said first and second guides such that, in said locking position said first magnetic component straddles the or each further guide and in said unlocking position said first magnetic component does not straddle the or each further guide.
9. A mechanism according to claim 1, wherein:
a) said first magnetic component cannot rotate relative to said first guide; or
b) said first magnetic component rotates with said first guide over an angular range of rotation of said first guide.
10. Apparatus comprising first and second parts, the first part being attachable to the second part at two fixing points such that the first part is rotatable with respect to the first part about an axis extending between the two fixing points, at least one of the fixing points being provided by the mechanism of claim 1.
11. Apparatus for locking together first and second parts and comprising:
first and second magnetic components moveable axially and rotationally with respect to each other and having magnetic poles oriented such that relative rotation of one of the magnetic components causes relative axial movement of the magnetic component between a locking and an unlocking position, at least a first of the magnetic components being mounted around, and being moveable along, an axial guide.
12. Apparatus according to claim 11, wherein said first and second magnetic components are coupled respectively to first and second guides such that, in said locking position, one of the magnetic components straddles the two guides and in said unlocking position that magnetic component does not straddle the two guides.
13. An assembly comprising first and second parts each of which defines a linear guide, and a hinge coupling the first and second parts together to allow these parts to be moved relative to each other between a first position in which the guides are in alignment and a second position in which the guides are out of alignment, the assembly further comprising a first magnetic component provided by or with said first guide and a second magnetic component moveable within or around said second guide, the magnetic components being moveable axially and rotationally with respect to each other and having magnetic poles oriented to allow the second magnetic component to be moved between a locking position in which that magnetic component straddles the two guides and an unlocking position in which that magnetic component does not straddle the two guides, wherein said unlocking position allows for relative movement of the parts about said hinge.
14. A set of parts for assembly into a structure, the set of parts including a first part comprising a magnetic component having a plurality of magnetic faces and two or more second parts each comprising a magnetic component having at least one magnetic face, the magnetic components being configured such that each second part can be connected to and disconnected from the first part by relative rotation of the respective opposed magnetic faces causing relative movement of the components, along the axis of rotation.
15. A set of parts according to claim 14, wherein at least certain of the magnetic components are configured such that one or more second parts can be connected to and disconnected from the first part by rotation of a magnetic component about an axis parallel to the plane of the corresponding opposed magnetic faces.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method comprising:
formatting broadcast content into a plurality of segments;
associating a sequential segment identifier with each of the segments;
broadcasting the segments and associated segment identifiers to a plurality of receivers;
communicating, in association with the broadcast content, to the receivers an identifier of a data source from which the receivers retrieve unsuccessfully received broadcasted segments.
2. The method as recited in claim 1 further comprising:
examining the segment identifier associated with each received segment;
determining whether any of the segments are unsuccessfully received;
retrieving unsuccessfully received segments from the identified data source.
3. The method as recited in claim 1 wherein the broadcasting to the receivers is via a wireless communication link.
4. The method as recited in claim 1 wherein the communicating the identifier of the data source is via a wireless link.
5. The method as recited in claim 1 wherein the broadcasting to the receivers and the communicating the identifier of the data source is via a common wireless link.
6. The method as recited in claim 1 wherein the retrieving unsuccessfully received segments from the identified data source is via a wireless communication link.
7. The method as recited in claim 1 wherein the broadcasting to the receivers and communicating the identifier of the data source is via a common wireless link, and wherein the retrieving unsuccessfully received segments from the identified data source is via another wireless link.
8. The method as recited in claim 1 wherein the sequential segment identifiers comprise a series of sequential numbers.
9. The method as recited in claim 1 wherein the sequential segment identifiers comprise a series of transmission timestamps.
10. The method as recited in claim 1 further comprising:
operating the data source identified by the data source identifier in association with operating a broadcast content source for broadcasting the broadcast content for the receivers.
11. The method as recited in claim 1 further comprising:
operating the data source identified by the data source identifier independent of operating a broadcast content source for broadcasting the broadcast content for the receivers.
12. The method as recited in claim 1 wherein the data source identifier identifies an internet web site.
13. The method as recited in claim 1 wherein the broadcast content includes at least one of a program code, multi media content, audio content and video content.
14. The method as recited in claim 2 wherein the retrieving includes automatically transmitting a request to the identified data source for retrieving the unsuccessfully received segments.
15. The method as recited in claim 2 wherein the retrieving includes prompting a user of a unsuccessfully received segment, initiating transmission of a request for retrieving the unsuccessfully received segment, and transmitting the request to the identified data source.
16. The method as recited in claim 2 wherein the retrieving includes receiving the unsuccessfully received segment from the identified data source.
17. The method as recited in claim 2 wherein the retrieving includes transmitting the unsuccessfully received segments from the identified data source.
18. A method comprising:
receiving broadcast content comprising a plurality of segments including a sequential segment identifier for identifying each of the segments;
receiving a data source identifier for identifying a data source for retrieving unsuccessfully received segments.
19. The method as recited in claim 18 further comprising:
examining the segment identifier associated with each received segment;
determining whether any of the segments are unsuccessfully received;
retrieving unsuccessfully received segments from the data source identified by the data source identifier.
20. The method as recited in claim 18 wherein the receiving of the broadcast content is via a wireless communication link.
21. The method as recited in claim 18 wherein the receiving of the data source identifier for identifying the data source is via a wireless communication link.
22. The method as recited in claim 18 wherein the receiving of the broadcast content and the receiving of the data source identifier for identifying the data source is via a common wireless communication link.
23. The method as recited in claim 19 wherein the retrieving unsuccessfully received segments from the data source is via a wireless communication link.
24. The method as recited in claim 19 wherein the receiving of the data source identifier for identifying the data source is via a wireless communication link and the retrieving unsuccessfully received segments from the data source is via another wireless communication link.
25. The method as recited in claim 19 wherein the receiving of the broadcast content and the receiving of the data source identifier for identifying the data source is via a common wireless communication link and the retrieving unsuccessfully received segments from the data source is via another wireless communication link.
26. The method as recited in claim 18 wherein the sequential segment identifiers comprise a series of sequential numbers.
27. The method as recited in claim 18 wherein the sequential segment identifiers comprise a series of timestamps.
28. The method as recited in claim 18 further comprising:
operating the data source identified by the data source identifier in association with operating a broadcast content source for broadcasting the broadcast content for the receivers.
29. The method as recited in claim 18 further comprising:
operating the data source identified by the data source identifier independent of operating a broadcast content source for broadcasting the broadcast content for the receivers.
30. The method of claim 18 wherein the data source identifier identifies an internet web site.
31. The method of claim 18 wherein the broadcast content includes at least one of a program code, multi media content, audio content and video content
32. The method as recited in claim 19 wherein the retrieving includes automatically transmitting a request to the identified data source for retrieving the unsuccessfully received segments.
33. The method as recited in claim 19 wherein the retrieving includes prompting a user of a unsuccessfully received segment, initiating transmission of a request for retrieving the unsuccessfully received segment, and transmitting the request to the identified data source.
34. The method as recited in claim 19 wherein the retrieving includes receiving the unsuccessfully received segments from the identified data source.
35. The method as recited in claim 19 wherein the retrieving includes transmitting the unsuccessfully received segments from the identified data source.
36. An apparatus comprising:
means for formatting broadcast content into a plurality of segments;
means for associating a sequential segment identifier with each of the segments;
means for broadcasting the segments and associated segment identifiers to a plurality of receivers;
means for communicating, in association with the broadcast content, to the receivers an identifier of a data source from which the receivers retrieve unsuccessfully received broadcasted segments.
37. The apparatus as recited in claim 36 further comprising:
means for examining the segment identifier associated with each received segment;
means for determining whether any of the segments are unsuccessfully received; and
means for retrieving unsuccessfully received segments from the identified data source.
38. The apparatus as recited in claim 36 wherein the means for broadcasting to the receivers includes means for broadcasting via a wireless communication link.
39. The apparatus as recited in claim 36 wherein the means for communicating the identifier of the data source includes means for communicating via a wireless link.
40. The apparatus as recited in claim 36 wherein the means for retrieving unsuccessfully received segments from the identified data source includes means for retrieving via a wireless communication link.
41. The apparatus as recited in claim 36 further comprising:
means for associated operations of the identified data source and a broadcast content source for the means for broadcasting the broadcast content for the receivers.
42. The apparatus as recited in claim 36 further comprising:
means for independent operations of the identified data source and a broadcast content source for broadcasting the broadcast content for the receivers.
43. The apparatus as recited in claim 37 wherein the means for retrieving includes means for automatically transmitting a request for retrieving the unsuccessfully received segments.
44. The apparatus as recited in claim 37 wherein the means for retrieving includes means for prompting a user of unsuccessful reception of a segment, initiating transmission of a request for retrieving the unsuccessfully received segments, and transmitting the request to the data source.
45. The apparatus as recited in claim 37 wherein the means for retrieving includes means for receiving the unsuccessfully received segments from the data source.
46. The apparatus as recited in claim 37 wherein the means for retrieving includes means for transmitting the unsuccessfully received segments from the data source.
47. An apparatus comprising:
means for receiving broadcast content comprising a plurality of segments including a sequential segment identifier for identifying each of the segments;
means for receiving a data source identifier for identifying a data source for retrieving unsuccessfully received segments.
48. The apparatus as recited in claim 47 further comprising:
means for examining the segment identifier associated with each received segment;
means for determining whether any of the segments are unsuccessfully received;
means for retrieving unsuccessfully received segments from the data source identified by the data source identifier.
49. The apparatus as recited in claim 47 wherein the means for receiving of the broadcast content includes means for receiving via a wireless communication link.
50. The apparatus as recited in claim 47 wherein the means for receiving of the data source identifier for identifying the data source includes means for receiving via a wireless communication link.
51. The apparatus as recited in claim 47 wherein the means for receiving of the broadcast content and the means for receiving of the data source identifier for identifying the data source include means for receiving via a common wireless communication link.
52. The apparatus as recited in claim 47 wherein the means for retrieving unsuccessfully received segments from the data source includes means for retrieving via a wireless communication link.
53. The apparatus as recited in claim 47 wherein the means for receiving of the data source identifier for identifying the data source includes means for receiving via a wireless communication link and the means for retrieving unsuccessfully received segments from the data source includes means for receiving via another wireless communication link.
54. The apparatus as recited in claim 47 wherein the means for receiving of the broadcast content and the means for receiving of the data source identifier for identifying the data source includes means for receiving via a common wireless communication link and the means for retrieving unsuccessfully received segments from the data source includes means for retrieving via another wireless communication link.
55. The apparatus of claim 47 wherein the means for retrieving includes means for retrieving from an internet web site.
56. The apparatus as recited in claim 47 wherein the means for retrieving includes means for automatically transmitting a request to the identified data source for retrieving the unsuccessfully received segments.
57. The apparatus as recited in claim 47 wherein the means for retrieving includes means for prompting a user of a unsuccessfully received segment, initiating transmission of a request for retrieving the unsuccessfully received segment, and transmitting the request to the identified data source.
58. The apparatus as recited in claim 47 wherein the means for retrieving includes means for receiving the unsuccessfully received segments from the identified data source.
59. The apparatus as recited in claim 47 wherein the means for retrieving includes means for transmitting the unsuccessfully received segments from the identified data source.
60. A method comprising:
broadcasting broadcast content to a plurality of receivers;
communicating, in association with the broadcast content, to the receivers an identifier of a data source from which the receivers retrieve unsuccessfully received broadcasted content.
61. The method as recited in claim 60 further comprising:
retrieving unsuccessfully received broadcasted content from the identified data source.
62. The method as recited in claim 60 wherein the broadcasting to the receivers is via a wireless communication link.
63. The method as recited in claim 60 wherein the communicating the identifier of the data source is via a wireless link.
64. The method as recited in claim 60 wherein the broadcasting to the receivers and the communicating the identifier of the data source is via a common wireless link.
65. The method as recited in claim 60 wherein the retrieving unsuccessfully received segments from the identified data source is via a wireless communication link.
66. The method as recited in claim 60 wherein the broadcasting to the receivers and communicating the identifier of the data source is via a common wireless link, and wherein the retrieving unsuccessfully received broadcasted content from the identified data source is via another wireless link.
67. The method as recited in claim 60 wherein the retrieving includes receiving the unsuccessfully received broadcasted content from the identified data source.
68. The method as recited in claim 60 wherein the retrieving includes transmitting the unsuccessfully received segments from the identified data source.