1. A method of processing video data, the method comprising:
determining, based at least in part on a syntax element in a scalable nesting supplemental enhancement information (SEI) message encapsulated by an SEI Network Abstraction Layer (NAL) unit, whether a nested SEI message encapsulated by the scalable nesting SEI message is applicable to a default sub-bitstream of an encoded video bitstream, wherein the default sub-bitstream is an operation point representation of an operation point defined by a layer identifier specified in a NAL unit header of the SEI NAL unit and a temporal identifier specified in the NAL unit header; and
when the nested SEI message is applicable to the default sub-bitstream, using the nested SEI message in an operation on the default sub-bitstream.
2. The method of claim 1, wherein a first syntax element in the NAL unit header indicates the layer identifier and a second syntax element in the NAL unit header indicates the temporal identifier.
3. The method of claim 2, wherein the default sub-bitstream is a subset of an encoded video bitstream and the default sub-bitstream does not include video coding layer (VCL) NAL units of the encoded video bitstream that have layer identifiers greater than the layer identifier indicated by the first syntax element of the NAL unit header or have temporal identifiers greater than the temporal identifier indicated by the second syntax element of the NAL unit header.
4. The method of claim 1, wherein the nested SEI message includes a set of hypothetical reference decoder (HRD) parameters.
5. The method of claim 4, wherein using the nested SEI message comprises using the HRD parameters in the nested SEI message in an operation that tests whether the default sub-bitstream conforms to a video coding standard.
6. The method of claim 1, wherein using the nested SEI message comprises using the nested SEI message in a decoding operation on the default sub-bitstream.
7. The method of claim 1, wherein:
the scalable nesting SEI message encapsulates a plurality of nested SEI messages, and
determining whether the nested SEI message is applicable to the default sub-bitstream comprises determining, based at least in part on the syntax element, whether each of the nested SEI messages is applicable to the default sub-bitstream.
8. The method of claim 1, wherein:
the syntax element in the scalable nesting SEI message is a first syntax element, and
the method further comprises determining, based at least in part on a second syntax element in the scalable nesting SEI message indicating that nested SEI messages encapsulated by the scalable nesting SEI message apply to a sub-bitstream extracted from the encoded video bitstream, that the scalable nesting SEI message includes the first syntax element.
9. The method of claim 1, wherein the method further comprises:
determining, based on one or more additional syntax elements in the scalable nesting SEI message, a temporal identifier of a second operation point and a maximum layer identifier of the second operation point; and
using the nested SEI message in an operation on an additional sub-bitstream, the additional sub-bitstream being an operation point representation of the second operation point.
10. A device comprising one or more processors configured to:
determine, based at least in part on a syntax element in a scalable nesting supplemental enhancement information (SEI) message encapsulated by an SEI Network Abstraction Layer (NAL) unit, whether a nested SEI message encapsulated by the scalable nesting SEI message is applicable to a default sub-bitstream of an encoded video bitstream, wherein the default sub-bitstream is an operation point representation of an operation point defined by a layer identifier specified in a NAL unit header of the SEI NAL unit and a temporal identifier specified in the NAL unit header; and
when the nested SEI message is applicable to the default sub-bitstream, use the nested SEI message in an operation on the default sub-bitstream.
11. The device of claim 10, wherein a first syntax element in the NAL unit header indicates the layer identifier and a second syntax element in the NAL unit header indicates the temporal identifier.
12. The device of claim 11, wherein the default sub-bitstream is a subset of the encoded video bitstream and the default sub-bitstream does not include video coding layer (VCL) NAL units of the encoded video bitstream that have layer identifiers greater than the layer identifier indicated by the first syntax element of the NAL unit header or have temporal identifiers greater than the temporal identifier indicated by the second syntax element of the NAL unit header.
13. The device of claim 10, wherein the nested SEI message includes a set of hypothetical reference decoder (HRD) parameters.
14. The device of claim 13, wherein the one or more processors are configured to use the HRD parameters in the nested SEI message in an operation that tests whether the default sub-bitstream conforms to a video coding standard.
15. The device of claim 10, wherein the one or more processors are configured to use the nested SEI message in a decoding operation on the default sub-bitstream.
16. The device of claim 10, wherein:
the scalable nesting SEI message encapsulates a plurality of nested SEI messages, and
the one or more processors are configured to determine, based at least in part on the syntax element, whether each of the nested SEI messages is applicable to the default sub-bitstream.
17. The device of claim 10, wherein:
the syntax element in the scalable nesting SEI message is a first syntax element, and
the one or more processors are further configured to determine, based at least in part on a second syntax element in the scalable nesting SEI message indicating that nested SEI messages encapsulated by the scalable nesting SEI message apply to a sub-bitstream extracted from the encoded video bitstream, that the scalable nesting SEI message includes the first syntax element.
18. The device of claim 10, wherein the one or more processors are further configured to:
determine, based on one or more additional syntax elements in the scalable nesting SEI message, a temporal identifier of a second operation point and a maximum layer identifier of the second operation point; and
use the nested SEI message in an operation on an additional sub-bitstream, the additional sub-bitstream being an operation point representation of the second operation point.
19. A device comprising:
means for determining, based at least in part on a syntax element in a scalable nesting supplemental enhancement information (SEI) message encapsulated by an SEI Network Abstraction Layer (NAL) unit, whether a nested SEI message encapsulated by the scalable nesting SEI message is applicable to a default sub-bitstream of an encoded video bitstream, wherein the default sub-bitstream is an operation point representation of an operation point defined by a layer identifier specified in a NAL unit header of the SEI NAL unit and a temporal identifier specified in the NAL unit header; and
means for using, when the nested SEI message is applicable to the default sub-bitstream, the nested SEI message in an operation on the default sub-bitstream.
20. The device of claim 19, wherein:
a first syntax element in the NAL unit header indicates the layer identifier and a second syntax element in the NAL unit header indicates the temporal identifier, and the default sub-bitstream is a subset of an encoded video bitstream and the default sub-bitstream does not include video coding layer (VCL) NAL units of the encoded video bitstream that have layer identifiers greater than the layer identifier indicated by the first syntax element of the NAL unit header or have temporal identifiers greater than the temporal identifier indicated by the second syntax element of the NAL unit header.
21. The device of claim 19, wherein:
the nested SEI message includes a set of hypothetical reference decoder (HRD) parameters, and
the device comprises means for using the HRD parameters in the nested SEI message in an operation that tests whether the default sub-bitstream conforms to a video coding standard.
22. A computer-readable storage medium that stores instructions that, when executed by one or more processors of a device, configure the device to:
determine, based at least in part on a syntax element in a scalable nesting supplemental enhancement information (SEI) message encapsulated by an SEI Network Abstraction Layer (NAL) unit, whether a nested SEI message encapsulated by the scalable nesting SEI message is applicable to a default sub-bitstream of an encoded video bitstream, wherein the default sub-bitstream is an operation point representation of an operation point defined by a layer identifier specified in a NAL unit header of the SEI NAL unit and a temporal identifier specified in the NAL unit header; and
when the nested SEI message is applicable to the default sub-bitstream, use the nested SEI message in an operation on the default sub-bitstream.
23. The computer-readable storage medium of claim 22, wherein:
a first syntax element in the NAL unit header indicates the layer identifier and a second syntax element in the NAL unit header indicates the temporal identifier, and
the default sub-bitstream is a subset of an encoded video bitstream and the default sub-bitstream does not include video coding layer (VCL) NAL units of the encoded video bitstream that have layer identifiers greater than the layer identifier indicated by the first syntax element of the NAL unit header or have temporal identifiers greater than the temporal identifier indicated by the second syntax element of the NAL unit header.
24. The computer-readable storage medium of claim 22, wherein:
the nested SEI message includes a set of hypothetical reference decoder (HRD) parameters, and
the instructions further configure the device to use the HRD parameters in the nested SEI message in an operation that tests whether the default sub-bitstream conforms to a video coding standard.
25. A method of encoding video data, the method comprising:
including, in a scalable nesting supplemental enhancement information (SEI) message encapsulated by an SEI Network Abstraction Layer (NAL) unit, a syntax element that indicates whether a nested SEI message encapsulated by the scalable nesting SEI message is applicable to a default sub-bitstream of an encoded video bitstream, wherein the default sub-bitstream is an operation point representation of an operation point defined by a layer identifier specified in a NAL unit header of the SEI NAL unit and a temporal identifier specified in the NAL unit header; and
signaling the scalable nesting SEI message in the encoded video bitstream.
26. The method of claim 25, wherein a first syntax element in the NAL unit header indicates the layer identifier and a second syntax element in the NAL unit header indicates the temporal identifier.
27. The method of claim 26, wherein the default sub-bitstream is a subset of the encoded video bitstream and the default sub-bitstream does not include video coding layer (VCL) NAL units of the encoded video bitstream that have layer identifiers greater than the layer identifier indicated by the first syntax element of the NAL unit header or have temporal identifiers greater than the temporal identifier indicated by the second syntax element of the NAL unit header.
28. The method of claim 25, wherein the nested SEI message includes a set of hypothetical reference decoder (HRD) parameters.
29. The method of claim 28, further comprising using the HRD parameters in the nested SEI message in an operation that tests whether the default sub-bitstream conforms to a video coding standard.
30. The method of claim 25, wherein:
the scalable nesting SEI message encapsulates a plurality of nested SEI messages, and
the syntax element indicates whether each of the nested SEI messages is applicable to the default sub-bitstream.
31. The method of claim 25, wherein:
the syntax element in the scalable nesting SEI message is a first syntax element in the scalable nesting SEI message,
the method further comprises including a second syntax element in the scalable nesting SEI message, the second syntax element indicating whether nested SEI messages encapsulated by the scalable nesting SEI message apply to a sub-bitstream extracted from the encoded video bitstream or whether the nested SEI messages apply to specific layers and sub-layers of the encoded video bitstream, and
the scalable nesting SEI message includes the first syntax element only when the second syntax element indicates that the nested SEI messages apply to the sub-bitstream extracted from the encoded video bitstream.
32. The method of claim 25, wherein:
the operation point identified by one or more syntax elements of a NAL unit header of the SEI NAL unit is a first operation point, and
the method further comprises including, in the scalable nesting SEI message, one or more additional syntax elements that identify a temporal identifier of a second operation point and a maximum layer identifier of the second operation point.
33. A video encoding device comprising one or more processors configured to:
include, in a scalable nesting supplemental enhancement information (SEI) message encapsulated by an SEI Network Abstraction Layer (NAL) unit, a syntax element that indicates whether a nested SEI message encapsulated by the scalable nesting SEI message is applicable to a default sub-bitstream of an encoded video bitstream, wherein the default sub-bitstream is an operation point representation of an operation point defined by a layer identifier specified in a NAL unit header of the SEI NAL unit and a temporal identifier specified in the NAL unit header; and
signal the scalable nesting SEI message in the encoded video bitstream.
34. The video encoding device of claim 33, wherein a first syntax element in the NAL unit header indicates the layer identifier and a second syntax element in the NAL unit header indicates the temporal identifier.
35. The video encoding device of claim 34, wherein the default sub-bitstream is a subset of the encoded video bitstream and the default sub-bitstream does not include video coding layer (VCL) NAL units of the encoded video bitstream that have layer identifiers greater than the layer identifier indicated by the first syntax element of the NAL unit header or have temporal identifiers greater than the temporal identifier indicated by the second syntax element of the NAL unit header.
36. The video encoding device of claim 33, wherein the nested SEI message includes a set of hypothetical reference decoder (HRD) parameters.
37. The video encoding device of claim 36, wherein the one or more processors are further configured to use the HRD parameters in the nested SEI message in an operation that tests whether the default sub-bitstream conforms to a video coding standard.
38. The video encoding device of claim 33, wherein:
the scalable nesting SEI message encapsulates a plurality of nested SEI messages, and
the syntax element indicates whether each of the nested SEI messages is applicable to the default sub-bitstream.
39. The video encoding device of claim 33, wherein:
the syntax element in the scalable nesting SEI message is a first syntax element in the scalable nesting SEI message,
the one or more processors are further configured to include a second syntax element in the scalable nesting SEI message, the second syntax element indicating whether nested SEI messages encapsulated by the scalable nesting SEI message apply to a sub-bitstream extracted from the encoded video bitstream or whether the nested SEI messages apply to specific layers and sub-layers of the encoded video bitstream, and
the scalable nesting SEI message includes the first syntax element only when the second syntax element indicates that the nested SEI messages apply to the sub-bitstream extracted from the encoded video bitstream.
40. The video encoding device of claim 33, wherein:
the operation point identified by one or more syntax elements of a NAL unit header of the SEI NAL unit is a first operation point, and
the one or more processors are further configured to include, in the scalable nesting SEI message, one or more additional syntax elements that identify a temporal identifier of a second operation point and a maximum layer identifier of the second operation point.
41. A video encoding device comprising:
means for including, in a scalable nesting supplemental enhancement information (SEI) message encapsulated by an SEI Network Abstraction Layer (NAL) unit, a syntax element that indicates whether a nested SEI message encapsulated by the scalable nesting SEI message is applicable to a default sub-bitstream of an encoded video bitstream, wherein the default sub-bitstream is an operation point representation of an operation point defined by a layer identifier specified in a NAL unit header of the SEI NAL unit and a temporal identifier specified in the NAL unit header; and
means for signaling the scalable nesting SEI message in the encoded video bitstream.
42. The video encoding device of claim 41, wherein:
a first syntax element in the NAL unit header indicates the layer identifier and a second syntax element in the NAL unit header indicates the temporal identifier, and
the default sub-bitstream is a subset of an encoded video bitstream and the default sub-bitstream does not include video coding layer (VCL) NAL units of the encoded video bitstream that have layer identifiers greater than the layer identifier indicated by the first syntax element of the NAL unit header or have temporal identifiers greater than the temporal identifier indicated by the second syntax element of the NAL unit header.
43. The video encoding device of claim 41, wherein:
the nested SEI message includes a set of hypothetical reference decoder (HRD) parameters, and
the video encoding device comprises means for using the HRD parameters in the nested SEI message in an operation that tests whether the default sub-bitstream conforms to a video coding standard.
44. A computer-readable storage medium that stores instructions that, when executed by a video encoding device, configure the video encoding device to:
include, in a scalable nesting supplemental enhancement information (SEI) message encapsulated by an SEI Network Abstraction Layer (NAL) unit, a syntax element that indicates whether a nested SEI message encapsulated by the scalable nesting SEI message is applicable to a default sub-bitstream of an encoded video bitstream, wherein the default sub-bitstream is an operation point representation of an operation point defined by a layer identifier specified in a NAL unit header of the SEI NAL unit and a temporal identifier specified in the NAL unit header; and
signal the scalable nesting SEI message in the encoded video bitstream.
45. The computer-readable storage medium of claim 44, wherein:
a first syntax element in the NAL unit header indicates the layer identifier and a second syntax element in the NAL unit header indicates the temporal identifier, and the default sub-bitstream is a subset of an encoded video bitstream and the default sub-bitstream does not include video coding layer (VCL) NAL units of the encoded video bitstream that have layer identifiers greater than the layer identifier indicated by the first syntax element of the NAL unit header or have temporal identifiers greater than the temporal identifier indicated by the second syntax element of the NAL unit header.
46. The computer-readable storage medium of claim 44, wherein:
the nested SEI message includes a set of hypothetical reference decoder (HRD) parameters, and
the instructions further configure the video encoding device to use the HRD parameters in the nested SEI message in an operation that tests whether the default sub-bitstream conforms to a video coding standard.
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 bumper assembly comprising:
a backing, wherein said backing is substantially rigid;
an outer layer, wherein said outer layer semi-flexible, resilient, and non-conductive;
a cushion layer sandwiched between said backing and said outer layer, wherein said cushion layer is resiliently compressible.
2. The bumper assembly recited in claim 1, wherein said outer layer comprises hard plastic and said cushion layer comprises foam rubber.
3. The bumper assembly recited in claim 1, wherein said bumper assembly is installed as a substantially continuous ring about a go-kart.
4. The bumper assembly recited in claim 3, wherein said go-kart comprises a chassis, said chassis comprises said backing, wherein said outer layer comprises hard plastic, and wherein said cushion layer comprises foam rubber.
5. The bumper assembly recited in claim 4 wherein said outer layer comprises an outer lateral surface, and wherein at least one conductive contact is arranged on said outer lateral surface, and wherein said at least one conductive contact is electrically connected to a rechargeable battery of said go-kart.
6. The bumper assembly recited in claim 1, wherein said bumper assembly is arranged on a floor to define a track for vehicles, wherein said outer layer faces said track.
7. The bumper assembly recited in claim 6 further comprising a plurality of rods vertically extending from said floor at spaced intervals behind said backing for rigidly supporting said bumper assembly.
8. The bumper assembly recited in claim 7, wherein each of said rods includes a portion that extends down into said floor.
9. The bumper assembly recited in claim 8, wherein a brittleness of each of said rods enables said rods to shear or break between said backing and said floor if said rods experience a threshold force exerted by said backing
10. The bumper assembly recited in claim 7 further comprising a plurality of ties, wherein each of said ties corresponds with one of said rods, and each tie is operatively arranged for securing said outer layer, said cushion layer, and said backing to one of said rods.
11. The bumper assembly recited in claim 10, wherein said ties comprise plastic tie-wraps.
12. The bumper assembly recited in claim 7, wherein said backing comprises first and second backings, said cushion layer comprises first and second cushion layers, and said outer layer comprises first and second outer layers, wherein said first cushion layer is sandwiched between said first outer layer and said first backing for forming a first bumper portion and wherein said second cushion layer is sandwiched between said second outer layer and said second backing for forming a second bumper portion, and wherein said first and second bumper portions are arranged on oppositely disposed sides of said rods.
13. The bumper assembly recited in claim 12 further comprising a plurality of ties, wherein each of said ties corresponds to one of said rods, and wherein each of said ties is operatively arranged to secure both of said first and second bumper portions to common ones of said rods.
14. A system for electric vehicles comprising:
a track;
a pit area connected to said track and having at least one charging station, said charging station comprising:
a battery charger providing a voltage source;
at least one first contact electrically connected to said charging station, wherein said at least one first contact is arranged on a vertically oriented surface of said charging station; and,
an electric vehicle comprising:
a rechargeable battery;
a bumper having an outer lateral surface; and,
at least one second contact electrically connected to said rechargeable battery for completing a charging circuit between said battery charger and said battery when said second contact is engaged against and electrically connected to said first contact for recharging said battery.
15. The system of claim 14, wherein a cushion layer is provided behind said at least one first contact for enabling said at least one first contact to flex away from said bumper in case of interference between said at least one first contact and said at least one second contact for providing mating engagement of said first and second contacts against each other.
16. The system of claim 14, wherein said at least one first contact comprises two first contacts, said at least one second contact comprises two second contacts, and wherein a charging circuit for recharging said battery is completed only when each first contact is engaged against and conductively connected with respective ones of said second contacts.
17. A charging station comprising:
a battery charger providing a voltage source;
two conductive faceplates, wherein each conductive faceplate is electrically connected to said battery charger, wherein both of said conductive faceplates are arranged on a vertical surface.
18. The charging station recited in claim 17, wherein a cushion layer is provided behind said conductive faceplates for enabling said faceplates to move forward and back with respect to said vertical surface.