1. A mobile communication device storing a file to be printed, the mobile communication device comprising:
a communication unit to receive printer information of a printer;
a network interface unit to connect to a printer server corresponding to the printer information received through the communication unit; and
a control unit to transmit the file to be printed to the printer through the printer server according to the received printer information.
2. The mobile communication device as claimed in claim 1, wherein the communication unit receives the printer information through Bluetooth communication with a Bluetooth adapter that is connected to the printer.
3. The mobile communication device as claimed in claim 2, wherein the communication unit requests the printer information through the Bluetooth communication with the Bluetooth adapter.
4. The mobile communication device as claimed in claim 1, further comprising:
a storage unit to store a list comprising the file to be printed; and
a display unit to display the list,
wherein the control unit transmits the file to be printed to the printer server when the file to be printed is selected from the displayed list.
5. The mobile communication device as claimed in claim 1, further comprising a display unit,
wherein the control unit receives information regarding an operational state of the printer from the printer server, and displays the information regarding the operational state of the printer using the display unit.
6. The mobile communication device as claimed in claim 1, further comprising a display unit,
wherein the control unit receives information regarding a printing status of the file to be printed from the printer server, and displays the information regarding the printing status using the display unit.
7. The mobile communication device as claimed in claim 1, wherein the printer information is an Internet Protocol (IP) address of the printer.
8. The mobile communication device as claimed in claim 1, wherein the network interface unit broadcasts a search signal to search for the printer server.
9. The mobile communication device as claimed in claim 1, wherein the network interface unit uses an IP address of the printer server to connect to the printer server.
10. The mobile communication device as claimed in claim 1, wherein the mobile communication device does not install or store a printer driver for the printer.
11. The mobile communication device as claimed in claim 1, wherein the mobile communication device does not store an application corresponding to a file type of the file to be printed.
12. A method of controlling a printing operation of a mobile communication device, the method comprising:
receiving printer information of a printer;
connecting to a printer server corresponding to the received printer information; and
transmitting a file to be printed to the printer through the printer server according to the received printer information, and carrying out the printing operation.
13. The method as claimed in claim 12, wherein the receiving of the printer information comprises:
receiving the printer information through Bluetooth communication with a Bluetooth adapter that is connected to the printer.
14. The method as claimed in claim 13, wherein the receiving of the printer information further comprises:
requesting the printer information through the Bluetooth communication with the Bluetooth adapter.
15. The method as claimed in claim 12, wherein the transmitting of the file to be printed comprises:
displaying a list of files stored in the mobile communication device, the list of files comprising the file to be printed; and
transmitting the file to be printed to the printer server when the file to be printed is selected from the displayed list.
16. The method as claimed in claim 12, further comprising:
receiving information regarding an operation state of the printer from the printer server; and
displaying the information regarding the operational state of the printer.
17. The method as claimed in claim 12, further comprising:
receiving information regarding a printing status of the file to be printed from the printer server; and
displaying the information regarding the printing status of the file to printed.
18. The method as claimed in claim 12, wherein the printer information is an Internet Protocol (IP) address of the printer.
19. A method of connecting a printer to a mobile communication device in order to print a file from the mobile communication device, the method comprising:
connecting an adapter to the printer;
reading out printer information from the printer to the adapter; and
transmitting the printer information from the adapter to the mobile communication device in order for the mobile communication device to transmit the file to be printed by the printer.
20. The method as claimed in claim 19, wherein the adapter is a Bluetooth adapter that transmits the printer information to the mobile communication device through a Bluetooth communication.
21. The method as claimed in claim 19, wherein the mobile communication device does not install or store a printer driver for the printer.
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 valve train for an internal combustion engine comprising a camshaft and a variable cam phaser connected to said camshaft for driving said camshaft, said engine comprising a crankshaft providing a drive torque for said variable cam phaser through a drive member coaxial with said camshaft, wherein said variable cam phaser comprises:
an input shaft rotationally coupled to said drive member;
an output shaft rotationally coupled to said camshaft and coaxial with said input shaft;
an adjusting means drivingly connecting said input and output shafts enabling said input and output shafts to be selectively, angularly adjusted while maintaining driving engagement therebetween, wherein the adjusting means comprise an electric actuator for selectively operating an angular adjustment;
wherein said input and output shafts are coupled to said drive member and camshaft via respective, rotationally stiff, flexible coupling means.
2. The valve train according to claim 1, wherein at least one of the rotationally stiff, flexible coupling means between said input shaft and drive member and between said output shaft and said camshaft is implemented as a curved teeth coupling.
3. The valve train according to claim 2, wherein one of said input or drive shaft is provided at its inner or outer periphery with axially extending teeth having curved ends that engage in-between splined teeth on the outer or inner periphery of the other of the input or drive shaft; and one of said output shaft or camshaft comprises, at its inner or outer periphery, axially extending teeth having curved ends that engage in-between splined teeth on the outer or inner periphery of the other of said output shaft or camshaft.
4. The valve train according to claim 1, wherein said adjusting means comprises a harmonic drive or planetary gearing system.
5. The valve train according to claim 4, wherein said adjusting means comprises a planetary gearing system having a ring gear coupled to said input shaft, a sun gear rotatable by an electric motor and planet gears supported by a carrier coupled to said output shaft.
6. The valve train according to claim 4, wherein said camshaft comprises an adapter portion at a front end thereof, to which said output shaft is coupled.
7. The valve train according to claim 1, wherein said variable cam phaser is arranged in a housing.
8. The valve train according to claim 7, wherein said variable cam phaser is fixed by means of an annular rubber block surrounding said housing.
9. The valve train according to claim 1, comprising a return spring associated with said cam phaser.
10. The valve train according to claim 1, comprising a stroke limiter system associated with said cam phaser.
11. An internal combustion engine comprising:
a camshaft and a variable cam phaser connected to said camshaft for driving said camshaft, said engine comprising a crankshaft providing a drive torque for said variable cam phaser through a drive member coaxial with said camshaft, wherein said variable cam phaser comprises:
an input shaft rotationally coupled to said drive member;
an output shaft rotationally coupled to said camshaft and coaxial with said input shaft;
an adjusting means drivingly connecting said input and output shafts enabling said input and output shafts to be selectively, angularly adjusted while maintaining driving engagement therebetween, wherein the adjusting means comprise an electric actuator for selectively operating an angular adjustment;
wherein said input and output shafts are coupled to said drive member and camshaft via respective, rotationally stiff, flexible coupling means.