1. A method for navigating a plurality of chapters within a video, the method comprising:
presenting, during playback of a video, an on-screen display to a user, the on-screen display including a timeline having a demarcation for a beginning of each of a plurality of chapter of the video and having a marker corresponding to a current position in the video playback, and the on-screen display including at least one image from each of the plurality of chapters displayed in order in a line, wherein a focus identifier marks an image of a chapter corresponding to the current position within the video playback;
receiving a chapter skip input;
moving the at least one image from each chapter one position along the line with respect to the focus identifier, according to the chapter skip input;
resuming playback of the video at a chapter identified by the focus identifier.
2. The method of claim 1, wherein the on-screen display includes a video preview from at least one of the plurality of chapters of the video that is displayed in order in the line with the rest of the at least one images from the rest of the plurality of chapters.
3. The method of claim 1, wherein the video comprises secured media content on a flash memory device.
4. The method of claim 3, further comprising:
initiating playback of the video from the flash memory device;
reading metadata from the flash memory device;
matching the read metadata from the flash memory device with the video; and
assembling the video and the metadata in a memory structure to retrieve for playback and display.
5. The method of claim 1, wherein the metadata comprises chapter titles, chapter start times and location on the flash memory device.
6. A computer readable medium storing instructions thereon, the instructions when executed cause at least one processor to:
present, during playback of a video, an on-screen display to a user, the on-screen display including a timeline having a demarcation for a beginning of each of a plurality of chapter of the video and having a marker corresponding to a current position in the video playback, and the on-screen display including one image from each of the plurality of chapters displayed in order in a line, wherein a focus identifier marks an image of a chapter corresponding to the current position within the video playback;
receive a chapter skip input;
move the at least one image from each chapter one position along the line with respect to the focus identifier, according to the chapter skip input;
resume playback of the video at a chapter identified by the focus identifier.
7. The computer readable computer medium of claim 6, wherein the on-screen display includes a video preview from at least one of the plurality of chapters of the video that is displayed in order in the line with the rest of the at least one images from the rest of the plurality of chapters.
8. The computer readable computer medium of claim 6, wherein the video comprises secured media content on a flash memory device.
9. The computer readable computer medium of claim 8, further comprising instructions that cause the at least one processor to:
initiate playback of the video from the flash memory device;
read metadata from the flash memory device;
match the read metadata from the flash memory device with the video; and
assemble the video and the metadata in a memory structure to retrieve for playback.
10. The computer readable computer medium of claim 6, wherein the metadata comprises chapter titles, chapter start times and location on the flash memory device.
11. An apparatus for navigating a plurality of chapters within a video, the apparatus comprising:
a video screen; and
a processor, the processor configured to execute:
a chapter presentation module, the chapter presentation module for presenting, during playback of a video, an on-screen display on the video screen, the on-screen display including a timeline having a demarcation for a beginning of each of a plurality of chapter of the video and having a marker corresponding to a current position in the video playback, and the on-screen display including at least one image from each of the plurality of chapters displayed in order in a line, wherein a focus identifier marks an image of a chapter corresponding to the current position within the video playback,
a receive module for receiving a chapter skip input,
a move module for moving the at least one image from each chapter one position along the line with respect to the focus identifier, according to the chapter skip input, and
a resume module for resuming playback of the video at a chapter identified by the focus identifier.
12. The apparatus of claim 11, wherein the on-screen display includes a video preview from at least one of the plurality of chapters of the video that is displayed in order in the line with the rest of the at least one images from the rest of the plurality of chapters.
13. The apparatus of claim 11, further comprising a secured digital memory device interface, the secured digital memory device interface for receiving a secured media memory device having the video.
14. The apparatus of claim 13, wherein the processor is further configured to execute:
a playback module for initiating playback of the video from the secured digital memory device;
a reading module for reading metadata from the secured digital memory device;
a match module for matching the read metadata from the secured digital memory device with the video; and
an assembly module for assembling the video and the metadata in a memory structure to retrieve for playback and display.
15. The apparatus of claim 11, wherein the metadata comprises chapter titles, chapter start times and location on the flash memory device
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. Carbon nanotubes according to claim 24, which are capable of being obtained by a process comprising
a) synthesizing alcohol(s) by fermentation of at least one vegetable matter and optionally purifying the product obtained;
b) dehydrating the alcohol or alcohols obtained in a) to produce, in a first reactor, a mixture of alkene(s) and water and optionally purifying the product obtained;
c) introducing, in a second reactor, a powdery catalyst at a temperature ranging from 450 to 850\xb0 C., the catalyst comprising at least one catalytic metal supported by an inert solid substrate, the grains of catalyst having a d50 of less than 300 \u03bcm;
d) bringing the alkene produced in b) into contact with the powdery catalyst of c), optionally in a fluidized bed, to form carbon nanotubes and hydrogen on the surface of said catalyst by catalytic decomposition of said alkene;
e) recovering the carbon nanotubes produced in d).
2. Carbon nanotubes according to claim 1, wherein c), d) and e) are implemented continuously and simultaneously in the second reactor.
3. Carbon nanotubes according to claim 1, wherein the vegetable matter is selected from beet; sugar cane; cereals such as corn, wheat, barley and sorghum; potatoes; biomass; and a of cellulose.
4. (canceled)
5. Carbon nanotubes according to claim 1, wherein the alcohol is ethanol.
6. Carbon nanotubes according to claim 1, wherein b) is carried out by means of a catalyst based on \u03b3-alumina.
7. Carbon nanotubes according to claim 1, wherein c) is carried out at a temperature of 500\xb0 C. to 700\xb0 C.
8. Carbon nanotubes according to claim 1, wherein the alkene is mixed in d) with a flow of hydrogen andor at least part of the water produced during the dehydrating of the alcohol in b).
9. Carbon nanotubes according to claim 1, wherein the hydrogen produced in d) is recycled at least in part into the second reactor.
10. Carbon nanotubes according to claim 1, wherein the catalytic metal is iron.
11. Carbon nanotubes according to claim 1, wherein the powdery catalyst is produced by impregnating the solid substrate with an aqueous solution of said catalytic metal then calcination of the solid substrate thus impregnated.
12. Carbon nanotubes according to claim 11, wherein the calcination is carried out at a temperature of 200\xb0 C. to 400\xb0 C.
13. Carbon nanotubes according to claim 1, wherein the d50 of the grains of powdery catalyst is less than 200 \u03bcm and preferably greater than 100 \u03bcm.
14.-16. (canceled)
17. A method for manufacturing composite materials having improved electrical andor thermal conduction properties andor improved mechanical properties, in particular elongation resistance, comprising the step of introducing the carbon nanotubes according to claim 24 in a macromolecular composition.
18. Macromolecular compositions intended for the packaging of electronic components or the production of fuel lines or antistatic coatings, or in thermistors or electrodes for supercapacitors, comprising carbon nanotubes according to claim 24.
19.-23. (canceled)
24. Carbon nanotubes which contain at least 20% by mass, of carbon of renewable origin relative to the total mass of carbon.
25. Carbon nanotubes according to claim 24, which contain at least 0.2\xd710\u221210% by mass of 14C.
26. Carbon nanotubes according to claim 24, which contain at least 0.6\xd710\u221210% by mass of 14C
27. Carbon nanotubes according to claim 24, wherein the source of cellulose is corn.
28. Carbon nanotubes which contain at least 50% by mass, of carbon of renewable origin relative to the total mass of carbon.