Author: claimsbot

1. A monitoring device for a railway vehicle, the vehicle including at least one rotating part and at least one bearing, the device comprising:
an electronic unit configured to attach to the at least one rotating part and including a transducer configured to detect and evaluate at least one parameter, the at least one parameter relating to at least one of rotation of the rotating part and vibration of the bearing, and configured to emit signals representative of the detected and evaluated parameter;
wherein the electronic unit is positioned inside an end cap such that the electronic unit is located completely within an inner wall of the end cap, the end cap being configured to secure the electronic unit outside the rotating part and prevent the positioning of the electronic unit within any recess in the rotating part.
2. The device as claimed in claim 1, wherein a wheel axle includes the at least one bearing on an end thereon.
3. The device as claimed in claim 2, wherein the end cap has a side facing an axle end and a recess extending into the side and the electronic unit is disposed in the recess.
4. The device as claimed in claim 1, wherein the end cap has an inspection opening extending through the end cap and positioned in alignment with a signal means arranged inside the electronic unit.
5. The device as claimed in claim 4, wherein the electronic unit further includes a protective plug configured to detachably close the inspection opening in the end cap.
6. The device as claimed in claim 4, wherein the electronic unit includes an electronic capsule positioned outside of the end cap and a safety washer for retaining the position of the capsule.
7. The device as claimed in a claim 4, wherein the electronic capsule is connected with one of the washer and the end cap.
8. The device as claimed in claim 1, wherein the transducer is adapted to detect temperature.
9. The device as claimed in claim 1, wherein the electronic unit includes analyzing means for evaluating at least one of speed, total mileage run, vibration related to bearing performance, vibration related to wheel condition, bearing operating temperature and structural vibrations.
10. The device as claimed in claim 1, wherein the device includes at least one of a battery, a power generator, and an energy transforming device for powering the electronic unit.
11. The device as claimed in claim 1, wherein the device includes signal means for emitting signals representative of a condition of one of the rotating part and the bearing.
12. The device as claimed in claim 11, wherein the signal means includes at least one light emitting diode.
13. The device as claimed in claim 11, wherein the signal means are configured to emit optical codes readable by a probe.
14. The device as claimed in claim 11, wherein the signal means are configured to wirelessly transmit the signals.
15. A monitoring device for a railway vehicle, the vehicle including at least one rotating part and at least one bearing, the device comprising:
an electronic unit configured to attach to the at least one rotating part and including a transducer configured to detect and evaluate at least one parameter, the at least one parameter relating to at least one of rotation of the rotating part and vibration of the bearing, and configured to emit signals representative of the detected and evaluated parameter;
wherein the electronic unit is positioned in a box located on a wheel axle of the vehicle, the box in which the electronic unit is positioned completely encloses the electronic unit such that a portion of the electronic unit does not extend outwardly from the box, the box being configured to secure the electronic unit outside the wheel axle and to prevent the positioning of the electronic unit within any recess in the wheel axle.
16. The device as claimed in claim 15, wherein the device includes signal means for emitting signals representative of a condition of one of the rotating part and the bearing.
17. The device as claimed in claim 16, wherein the signal means includes at least one light emitting diode.
18. The device as claimed in claim 15, wherein the device is powered by an energy transforming device.
19. A monitoring device for a railway vehicle, the vehicle including at least one rotating part and at least one bearing, the device comprising:
an electronic unit configured to attach to the at least one rotating part and including a transducer configured to detect and evaluate at least one parameter, the at least one parameter relating to at least one of rotation of the rotating part and vibration of the bearing, and configured to emit signals representative of the detected and evaluated parameter;
wherein the electronic unit is positioned in an enclosure positioned on the rotating part the enclosure in which the electronic unit is positioned completely encloses the electronic unit such that a portion of the electronic unit does not extend outwardly from the enclosure, the enclosure being configured to secure the electronic unit outside the rotating part and prevent the positioning of the electronic unit within any recess in the rotating part.

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. An optical pickup actuator for use with a recording medium, the optical pickup actuator comprising:
a swing arm pivoting in a tracking direction with respect to the recording medium;
a first driving unit pivoting the swing arm;
an optical pickup facing the recording medium;
an elastic member having one end fixed to the swing arm and a free end portion elastically deformable in a focus direction with respect to the recording medium, wherein the optical pickup has an electrical connection and is mounted entirely on the free end portion of the elastic member; and
a second driving unit deforming and driving the elastic member;
wherein the second driving unit comprises:
at least one coil provided on an end of the swing arm and functioning as an electromagnet according to a supply of current; and
at least one magnet facing the at least one coil, wherein the at least one magnet is provided on the optical pickup to generate a solenoid force with the corresponding coil;

wherein the at least one magnet is provided on a surface of the optical pickup opposite of the recording medium;
wherein the at least one coil comprises a pair of coils, so that the pair of coils is symmetrically arranged at both sides with respect to a center line of the at least one magnet; and
wherein each coil of the pair of coils provides force in the same direction to provide focus control, and each coil of the pair of coils provides force in opposite directions to provide tilt control.
2. The optical pickup actuator as claimed in claim 1, wherein the elastic member has a width 10 times or more greater than a thickness of the elastic member.
3. The optical pickup actuator as claimed in claim 1, wherein the elastic member is also elastically deformable in the tracking direction.
4. The optical pickup actuator as claimed in claim 1, further comprising a wiring provided in the elastic member electrically connecting the optical pickup and a main circuit.
5. The optical pickup actuator as claimed in claim 4, wherein the elastic member further comprises:
a main body of the elastic member;
an insulation layer insulating the main body and the wiring; and
a protective layer coated on the wiring.
6. The optical pickup actuator as claimed in claim 5, wherein the main body comprises beryllium copper or stainless steel.
7. The optical pickup actuator as claimed in claim 1, wherein at least one slit is formed in the elastic member in a lengthwise direction.
8. The optical pickup actuator as claimed in claim 1, wherein the first driving unit comprises:
a coil provided at an end of the swing arm; and
a magnet generating an electromagnetic force with current flowing in the coil of the first driving unit.
9. An optical pickup actuator for use with a recording medium, the optical pickup actuator comprising:
a swing arm pivoting in a tracking direction with respect to the recording medium;
a first driving unit pivoting the swing arm;
an optical pickup facing the recording medium;
an elastic member having one end fixed to the swing arm and a free end portion elastically deformable in a focus direction with respect to the recording medium, wherein the optical pickup is coupled to the free end portion of the elastic member; and
a second driving unit deforming and driving the elastic member;
wherein the second driving unit comprises:
at least one coil provided on an end of the swing arm and functioning as an electromagnet according to a supply of current; and
at least one magnet facing the at least one coil, wherein the at least one magnet is provided on the optical pickup to generate a solenoid force with the corresponding coil; and

wherein the at least one magnet comprises a magnet provided at a surface of the optical pickup perpendicular to the recording medium.
10. The optical pickup actuator as claimed in claim 9, wherein the at least one magnet further comprises a first magnet provided on a surface of the optical pickup opposite of the recording medium; and
wherein the magnet provided at a surface of the optical pickup perpendicular to the recording medium is a second magnet.
11. The optical pickup actuator as claimed in claim 10, wherein the at least one coil facing the first magnet comprises a pair of coils, so that the pair of coils are symmetrically arranged at both sides with respect to a center line of the first magnet.
12. The optical pickup actuator as claimed in claim 10, further comprising a third magnet provided at a surface of the optical pickup opposite of the second magnet.
13. The optical pickup actuator as claimed in claim 12, wherein the at least one coil facing the first magnet comprises a pair of coils, so that the pair of coils are symmetrically arranged at both sides with respect to a center line of the first magnet.
14. The optical pickup actuator as claimed in claim 1, wherein the elastic member is a leaf spring.

1. A method for storage allocation in a storage system, the method comprising:
generating a request for storage space allocation in a particular storage device by a first node;
determining an owner node associated with the particular storage device by a first allocation client associated with the first node;
sending the request by the first allocation client to a second allocation client associated with the owner node; and
creating a storage device allocation region of the particular storage device, the allocation region comprising an area defined by a height proportional to storage devices the owner node and the second allocation client are coupled with, and a width that is inversely proportional to a number of nodes sharing the particular storage device.
2. The method of claim 1, further comprising:
sending an ownership request for the allocation region from the second allocation client to an allocation manager.
3. The method of claim 2, further comprising:
determining whether the allocation region is available by the allocation manager; and
sending an ownership status message to the second allocation client based on the determination.
4. The method of claim 3, wherein upon the allocation manager determining the allocation region is available, sending an ownership granted message to the second allocation client.
5. The method of claim 4, further comprising:
upon receiving the ownership granted message, the second allocation client reserving the allocation region.
6. The method of claim 5, further comprising:
the second allocation client responding to the first allocation client with the reserved allocation region.
7. The method of claim 1, wherein upon the first node being the owner node, the first allocation client and the second allocation client are the same.
8. The method of claim 7, wherein only one owner node is associated with the particular storage device.
9. The method of claim 1, wherein the storage system comprises a cluster file system, and the particular storage device comprises a storage disk.
10. The method of claim 9, wherein the storage space allocation and free space management is adaptive for node-disk connectivity based on an allocation map layout.
11. The method of claim 10, wherein the allocation map layout includes divided disk regions based on a number of nodes that share a disk and a number of disks connected to a particular node.
12. A storage system comprising:
a plurality of storage devices;
a first compute node that generates a request for storage space allocation in a particular one of the plurality of storage devices;
a first allocation client that determines an owner node that owns the particular storage device, and sends the request for storage space to a second allocation client associated with the owner node; and
a storage allocation manager that creates an allocation region in the particular storage device, wherein the allocation region comprises an area defined by a height proportional to storage devices the owner node and the second allocation client are coupled with, and a width that is inversely proportional to a number of nodes sharing the particular storage device.
13. The system of claim 12, wherein the second allocation client sends an ownership request for the allocation region to the allocation manager, the allocation manager determines whether the allocation region is available, and the allocation manager sends an ownership status message to the second allocation client.
14. The system of claim 13, wherein upon receiving an ownership granted message, the second allocation client reserves the allocation region and responds to the first allocation client with the reserved allocation region.
15. The system of claim 12, wherein the storage system comprises a cluster file system, and the particular storage device comprises a storage disk.
16. The system of claim 15, wherein the storage allocation manager provides adaptive storage space allocation and free space management for node-disk connectivity based on an allocation map layout, wherein the allocation map layout includes divided disk regions based on a number of nodes that share a disk and a number of disks connected to a particular node.
17. A non-transitory computer-useable storage medium for storage allocation in a storage system, the computer-useable storage medium having a computer-readable program, wherein the program upon being processed on a computer causes the computer to implement:
generating a request for storage space allocation in a particular storage device by a first node;
determining an owner node associated with the particular storage device by a first allocation client associated with the first node;
sending the request by the first allocation client to a second allocation client associated with the owner node; and
creating a storage device allocation region of the particular storage device, the allocation region comprising a height proportional to storage devices the owner node and the second allocation client are coupled with, and a width that is inversely proportional to a number of nodes sharing the particular storage device.
18. The program of claim 17, further causing the computer to implement:
sending an ownership request for the allocation region from the second allocation client to an allocation manager;
determining whether the allocation region is available by the allocation manager; and
sending an ownership status message to the second allocation client based on the determination wherein upon the allocation manager determining the allocation region is available, sending an ownership granted message to the second allocation client.
19. The program of claim 18, further causing the computer to implement:
upon receiving the ownership granted message, reserving the allocation region by the second allocation client; and
responding to the first allocation client with the reserved allocation region by the second allocation client.
20. The program of claim 18, further causing the computer to implement:
adaptive the storage space allocation and free space management for node-disk connectivity based on an allocation map layout, wherein the allocation map layout includes divided disk regions based on a number of nodes that share a disk and a number of disks connected to a particular node.

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 switched mode power converter adapted for zero-voltage transition operation, wherein the converter comprises
a half-bridge, having a first power switch (206) and a second power switch,
a generator (201) adapted for generating a switching signal (S1) after a first period of time, wherein the first period of time starts at the switching off of the second power switch,
a controller (202) for converting the switching signal (S1) into a control signal (S2), wherein the first power switch (206) is switched on in case of the control signal (S2), wherein
the controller (202) comprises
a detector (205), wherein the detector (205) is adapted to generate a first signal (S3) in case the voltage (U+, U\u2212) over the first power switch (206) is decreasing,
a processor (203), wherein the processor (203) is adapted to generate a trigger signal (S4) in case of a switching signal (S1) and while the first signal (S3) is not present,
a storage element (204), wherein the storage element (204) is adapted to generate the control signal (S2) in case of the trigger signal (S4) and the switching signal (S1), wherein the storage element (204) is adapted to keep the control signal (S2) after disappearing of the trigger signal (S4), wherein the storage element (204) is adapted to terminate the control signal (S2) after disappearing of the switching signal (S1).
2. The converter according to claim 1, wherein the storage element (204) is a latch.
3. The converter according to claim 1, wherein the storage element (204) is a bistable multivibrator, especially a flip-flop.
4. The converter according to claim 1, wherein
the converter comprises
a first delayer for generating a first dead-time such as there is a the period of time between the switching on of the first power switch (206) and the switching off of the second power switch.
5. The converter according to claim 1, wherein
the converter comprises
a second delayer for generating a second dead-time such that the voltage (U+, U\u2212) over the first power switch (206) falls to zero before the first power switch (206) is turned on.
6. The converter according to claim 1 wherein the first period of time
is longer than the time period from a change of the control signal (52) until the first power switch (206) has changed its conduction state,
is shorter than the time period starting with the disappearance of the switching signal (S1) and ending with the first minimum voltage of the first power switch (206) during zero voltage transition operation.
7. The converter according to claim 1 wherein the first period of time is in the range of 10 to 5000 ns.
8. The converter according to claim 1, wherein the converter is a part of a DCAC converter for supplying a resonant circuit and a transformer of a high voltage generator for x-ray applications.
9. A method for controlling a switched mode power converter adapted for zero-voltage transition operation, wherein the converter comprises a half-bridge, having a first power switch (206) and a second power switch, wherein
the method comprises the steps of
generating a switching signal (S1) after a first period of time, wherein the first period of time starts at the switching off of the second power switch,
converting the switching signal (Si) into a control signal (S2), wherein the first power switch (206) is switched on in case of the control signal (S2), wherein
the method comprises the steps of
generating a first signal (53) in case the voltage (U+, U-) over the first power switch (206) is decreasing,
generating a trigger signal (S4) in case of a switching signal (S1) and while the first signal (S3) is not present,
generating the control signal (S2) in case of the trigger signal (S4) and the switching signal (S1), wherein the storage element (204) is adapted to keep the control signal (52) after disappearing of the trigger signal (S4), wherein the storage element (204) is adapted to terminate the control signal (S2) after disappearing of the switching signal (S1).
10. A computer tomography system comprising a converter according to claim 1.
11. A programme element, which, when being executed by a processor, is adapted to carry out the method of claim 9.
12. A computer readable medium having stored the programme element of claim 11.