1. A computer-readable storage medium having stored thereon a computer program executable by a computer so as to instruct, when executed by the computer, the computer perform a method comprising:
receiving NAL units, each NAL unit being of a NAL unit type of a predetermined set of NAL unit types, the set of NAL unit types, at least, comprising
a picture parameter set NAL unit type with the NAL units of this type comprising a respective picture parameter set and a corresponding picture parameter set ID so as to be referable for one or more individual pictures of a video;
a sequence parameter set NAL unit type with the NAL units of this type comprising a respective sequence parameter set, and a sequence parameter set ID so as to be referable by one or more NAL units of the picture parameter set NAL unit type, with each NAL unit of the picture parameter set NAL unit type comprising an identifier referring to a predetermined sequence parameter set ID with the sequence parameter set of the corresponding sequence parameter set ID not being repeated in the respective picture parameter set NAL unit; and
a coded picture NAL unit type with the NAL units of this type comprising syntax elements of slice header data andor syntax elements concerning slice transform coefficients of one or more slices of an individual picture of the video, and an identifier referring to a predetermined picture parameter set ID with the picture parameter set of the corresponding picture parameter set ID not being repeated in the respective coded picture NAL unit;
wherein at least the NAL units of the coded picture NAL unit type are arranged in a data stream comprising consecutive access units of consecutive NAL units; and
reconstructing the video by
using, for each access unit, the NAL units of the coded picture NAL unit type within the respective access unit to compose an individual picture of the video, with NAL units of the coded picture NAL unit type comprising syntax elements of slice header data andor syntax elements concerning slice transform coefficients of the respective individual picture being absent in other access units;
when a picture parameter set ID is referred to by a NAL unit of the coded picture NAL unit type in the data stream, using the picture parameter set corresponding to that picture parameter set ID for the NAL unit of the coded picture NAL unit type and, if not already activated, activating the picture parameter set corresponding to that picture parameter set ID with the respective picture parameter set remaining activated until deactivated by an activation of another picture parameter set ID following in the data stream, wherein, for each picture parameter set ID, at least one NAL unit comprising the picture parameter set corresponding to a respective picture parameter set ID is available to the decoder prior to the activation of the respective picture parameter set ID by a respective NAL unit of the coded picture NAL unit type, and, for each picture parameter set ID being activated, the picture parameter sets of the NAL units of the picture parameter set NAL unit type comprising the respective activated picture parameter set ID are equal to each other unless a NAL unit of the picture parameter set NAL unit type comprising the respective activated picture parameter set ID follows a last NAL unit of a coded picture NAL unit type belonging to any individual picture and precedes a first NAL unit of the coded picture NAL unit type of another individual picture; and
when a sequence parameter set ID is referred to by a NAL unit of the picture parameter set NAL unit type, using the sequence parameter set corresponding to that sequence parameter set ID for the NAL unit of the picture parameter set NAL unit type and, if not already activated, activating the sequence parameter set corresponding to that sequence parameter set ID with the respective sequence parameter set remaining activated until deactivated by an activation of another sequence parameter set ID, wherein, for each sequence parameter set ID, at least one NAL unit comprising the sequence parameter set corresponding to a respective sequence parameter set ID is available to the decoder prior to the activation of the respective sequence parameter set ID by a respective NAL unit of the picture parameter set NAL unit type, and, for each sequence parameter set ID being activated, the sequence parameter sets of the NAL units of the sequence parameter set NAL unit type comprising the respective activated sequence parameter set ID are equal to each other unless a NAL unit of the sequence parameter set NAL unit type comprising the respective activated sequence parameter set ID follows a last access unit of a access unit sequence of the video and precedes a first NAL unit of the coded picture NAL unit type of another access unit sequence of the video.
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 spacer for a rolling bearing, the rolling bearing having an inner ring, an outer ring, and at least one row of contact rollers disposed between raceways provided on the inner and outer rings, the spacer comprising:
opposite inner and outer portions facing one another and a lateral portion extending transversally between the inner and outer portions and connected to said portions, and wherein
the inner and outer portions delimiting together with the lateral portion a pocket configured to receive a contact roller, and wherein
the inner and outer portions each provide a contact surface with an end face of said roller, the pocket being laterally open on the side opposite to the lateral portion.
2. The spacer according to claim 1, wherein the inner and outer portions and the lateral portion have in cross-section the overall shape of a C.
3. The spacer according to claim 1, wherein the lateral portion includes an outer surface provided with at least a rib extending outwards.
4. The spacer according to claim 3, wherein the rib extends transversally on the outer surface.
5. The spacer according to claim 3, wherein the rib has in cross-section a profile in the shape of an arc of circle.
6. The spacer according to claim 3, wherein the outer surface is provided with two spaced ribs.
7. The spacer according to claim 6, wherein the ribs have different thicknesses.
8. The spacer according to claim 1, wherein the lateral portion includes an inner surface forming a bearing surface for an exterior rolling surface of the roller.
9. The spacer according to claim 1, wherein at least one of the outer portion and the inner portion provides, on the side opposite to the lateral portion, at least a retaining hook having an inner surface forming a bearing surface for an exterior rolling surface of the roller.
10. The spacer according to claim 1, further comprising being formed in one part from metal or from a polymer material.
11. A rolling bearing comprising:
an inner ring,
an outer ring,
at least one row of contact rollers disposed between raceways provided on the rings, and
a plurality of spacers comprising:
opposite inner and outer portions facing one another, and
a lateral portion extending transversally between the inner and outer portions and connected to said portions, and wherein
the inner and outer portions delimiting together with the lateral portion a pocket configured to receive a contact roller, and wherein
the inner and outer portions each provide a contact surface with an end face of said roller, the pocket being laterally open on the side opposite to the lateral portion, and wherein
the spacers are disposed circumferentially between the rollers, the pocket of one spacer being laterally open towards the lateral portion of the adjacent spacer.
12. The rolling bearing according to claim 11, wherein the inner and outer rings further comprise a guiding surface in contact with at least one of the inner portion and the outer portion of each spacer.