1. A method for loading and managing a software application in a mobile equipment intended to receive digital data for mobile television services broadcast via a unidirectional mobile network, the mobile equipment comprising a memory for storing the software application the mobile equipment further comprising at least a security module, said software application being associated with broadcast mobile television services, the method comprising:
transmitting, upon connection of the mobile equipment to a bidirectional mobile network different from the unidirectional mobile network, identification data of the mobile equipment and of the security module to a managing center; and
reading by the system software of the mobile equipment a descriptor stored in the security module designating a server of the managing center suitable for providing the mobile equipment with the software application or an update of said software application by downloading into said mobile equipment via the bidirectional mobile network.
2. The method of claim 1, wherein the descriptor stored in the security module corresponds to an IP address of a server of the managing center suitable for providing at least one security application for protecting the data of mobile television services broadcast via the unidirectional mobile network
3. The method of claim 2, wherein the IP address is registered in the security module at manufacturing respectively during personalization steps of said security module.
4. The method of claim 3, wherein the IP address stored in the security module depends on the manufacturer andor of the model andor of the version of said security module.
5. The method of claim 2, wherein the application to be downloaded into the mobile equipment, via the server designated by the IP address of the security module, is specific either to the type andor the version of the security module, or to the model andor the version of the mobile equipment or to both characteristics at once.
6. The method of claim 1, wherein the application is updated after identification of the configuration of the mobile equipment andor of the security module by the managing center via the bidirectional network.
7. The method of claim 1, wherein the application installed in the mobile equipment verifies automatically, at predetermined periods, the availability of the updates, using the IP address stored in the security module, in order to download them if necessary.
8. The method of claim 1, wherein the managing center transmits a message to the mobile equipment containing version information for available updates, the security module compares the version information of the message with version information for the application installed in the mobile equipment in order to initiate downloading, via the server designated by the IP address, if the available version is higher than the version information for the installed software application.
9. The method of claim 1, wherein the security module verifies the loaded update by comparing a signature of said update generated by said security module with a signature provided by the managing center, and in case of a difference, the security module restricts or blocks functionalities of the mobile equipment.
10. The method of claim 9, wherein the security module generates the sending of short messages to the managing center when the comparison shows a difference.
11. A security module for mobile equipment intended to receive digital data corresponding to mobile television services broadcast via a unidirectional mobile network, the security module comprising a memory for storing at least one descriptor designating a server of a managing center suitable for providing the mobile equipment with an application or an update of the application by downloading into said mobile equipment.
12. The security module of claim 11, wherein the descriptor represents an IP address of a server suitable for providing at least one security application for protecting the digital data of mobile television services broadcast via the unidirectional mobile network.
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 rotor body for a variable valve timing system for an engine, comprising
a main body comprising
a front side for engaging with a front side cover and a back side for engaging with a back side cover,
vanes for defining variable oil or air pressure chambers inside a stator housing, having vane tips for engaging with the stator housing,
channels for oil or air transport from one pressure chamber to other pressure chambers, and
a central part comprising an (axial) bore hole running from the front side to the back side for receiving a camshaft or a bolt for fixing to the camshaft,
wherein
the main body is comprised of a fibrous reinforced polymeric material and
the central part comprising the axial bore hole is made of metal,
the rotor body comprises
dynamic sealing elements (i) at the vane tips for engaging with the stator housing, and
dynamic sealing elements (ii) at the front side and the back side for engaging with the front side cover and the back side cover
wherein the dynamic sealing elements (i) and (ii) are made of a non-reinforced plastic material,
and wherein the metallic central part comprises protrusions protruding into the fibrous reinforced polymeric material andor holes filled with a fibrous reinforced material.
2. The rotor body according to claim 1, wherein the central part is made from machined metal, cast metal or sintered metal.
3. The rotor body according to claim 1, wherein the central metal part comprises a cylindrically shaped body with a cylindrical outer surface and protrusions on an outer surface protruding into the main body made of the fibrous reinforced polymeric material.
4. The rotor body according to claim 1, wherein the central part is installed into the rotor body via press fit, or by compression moulding or injection moulding of the polymeric material around the central part.
5. The rotor body according to claim 1, wherein the main body is comprised of an injection mouldable fibrous reinforced thermoplastic or thermosetting polymeric material.
6. The rotor body according to claim 1, wherein the sealing elements (i) and (ii) are made from an engineering polymer, PTFE or PTFE modified polymer.
7. The rotor body according to claim 1, wherein the sealing elements (i) are comprised by pockets at the vane tips.
8. The rotor body according to claim 1, wherein the sealing elements (ii) are comprised by grooves into the front and the back side, respectively.
9. The rotor body according to claim 1, wherein the channels for the oil or air transport are constituted by channels in the main body located at the surface at the front side and the back side of the main body, wherein the channels are covered with dynamic sealing elements (iii).
10. The rotor body according to claim 1, wherein
a. the central metal part comprises a cylindrically shaped body with a cylindrical outer surface and protrusions on an outer surface protruding into the main body made of the fibrous reinforced polymeric material; and
b. the channels for the oil or air transport are constituted by channels in the main body located at the surface at the front side and the back side of the main body, wherein the channels are covered with dynamic sealing elements (iii).
11. Variable valve timing system comprising an assembly of a rotor and a stator receiving the rotor on a camshaft, wherein the rotor is a rotor body according to claim 1, comprising a main body comprising a front side, a back side and vanes tips, made from a fibrous reinforced polymeric material, a central part comprising an (axial) bore hole made of metal, and sealing elements made of a non-reinforced polymeric material at the vain tips and at the front side and back side, wherein an end part of the camshaft andor a fixing element is received in the axial bore hole and the rotor is fixed at the end part of the camshaft with the fixing element.