1. An image processing system comprising:
a camera for picking up a workpiece; and
an image processing apparatus for capturing image pickup data of the workpiece picked up by said camera and performing image processing, said image processing apparatus including a trigger receiving section for receiving a trigger from an outside to initiate capture of workpiece image pickup data by said camera, a trigger generation section for generating a predetermined number of internal triggers at predetermined intervals via an interval timer after said trigger receiving section receives the trigger from the outside, each of the internal triggers initiating capture of workpiece image pickup data at the predetermined intervals, an image processing section for performing image processing with respect to each of the image pickup data picked up by the camera after receipt of the trigger from the outside and the internal triggers, and a statistical processing section for calculating variations between the image pickup data picked up by the camera after receipt of the trigger from the outside and the image pickup data initiated by the predetermined number of internal triggers and for determining abnormal image pickup data that deviates from a predetermined range and eliminating the abnormal image pickup data from the statistical processing.
2. The image processing system as defined in claim 1, wherein a user can arbitrarily set the number of generations of the internal triggers.
3. The image processing system as defined in claim 1, wherein said image processing apparatus includes a display section for displaying a result calculated by the statistical processing section.
4. The image processing system as defined in claim 1, wherein the statistical processing comprises generating at least one of a maximum value of variation in workpiece position, a minimum value of variation in workpiece position, and an average value of variation in workpiece position.
5. The image processing system as defined in claim 1, wherein the predetermined intervals are set to avoid synchronizing with a period of an edge position of the workpiece.
6. The image processing system as defined in claim 1, wherein the predetermined range has both an upper limit value of data and a lower limit value of data.
7. An image processing method comprising:
receiving an external trigger from the outside to initiate image pickup processing of a workpiece;
generating a predetermined number of internal triggers at predetermined intervals via an interval timer after receiving the trigger from the outside;
picking up workpiece image pickup data by a camera after receipt of each of the external trigger and the internal triggers;
performing image processing with respect to each of the workpiece image pickup data picked up by the camera after receipt of the external trigger and internal triggers; and
performing statistical processing to calculate variations between the image pickup data picked up by the camera after receipt of the external triggers and the internal triggers, and determining abnormal image pickup data that deviates from a predetermined range and eliminating the abnormal image pickup data from the statistical processing.
8. The image processing method as defined in claim 7, further comprising:
setting the number of generations of the internal triggers.
9. The image processing method as defined in claim 7, further comprising:
displaying a result calculated from the statistical processing.
10. The image processing method as defined in claim 7, wherein the statistical processing comprises generating at least one of a maximum value of variation in workpiece position, a minimum value of variation in workpiece position, and an average value of variation in workpiece position.
11. The image processing method as defined in claim 7, further comprising setting the predetermined intervals to avoid synchronizing with a period of an edge position of the workpiece.
12. The image processing method as defined in claim 7, wherein the predetermined range has both an upper limit value of data and a lower limit value of data.
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 base station apparatus for transmitting data in order to determine transmit power of an uplink frame transmitted from a subscriber station to a base station in a mobile communication system in which a downlink frame transmitted from the base station to the subscriber station and the uplink frame are time division-duplexed (TDD), the base station apparatus comprising:
an error detector for determining if an error has occurred in uplink frame received from the subscriber station; and
an upper layer processor for receiving information related to whether or not the error has occurred in an uplink frame from the error detector and generating an ACKNACK message of an upper layer according to the information for transmitting data in order to determine transmit power of the uplink frame transmitted from the subscriber station to the base station.
2. The base station apparatus in claim 1, further comprising a transmitter for performing a transmission processing for the ACKNACK message generated by the upper layer processor.
3. The base station apparatus in claim 1, wherein the base station apparatus transmits a target signal-to-interference ratio (SIR) for determining the transmit power of the uplink frame to the subscriber station.
4. The base station apparatus in claim 1, wherein the base station apparatus transmits reception interference and noise level of the base station for determining the transmit power of the uplink frame to the subscriber station.
5. The base station apparatus in claim 4, wherein the reception interference measured by the base station is measured in a unit of a frame.
6. The base station apparatus in claim 4, wherein the reception interference measured by the base station is measured in a unit of a time slot.
7. The base station apparatus in claim 1, wherein the base station apparatus transmits transmit power of a pilot or broadcast channel to the subscriber station so that path loss can be measured in the subscriber station, in order to determine the transmit power of the uplink frame.
8. The base station apparatus in claim 1, wherein, when the NACK message is transmitted to the subscriber station, the subscriber station increases the transmit power of the uplink frame.
9. The base station apparatus in claim 1, wherein, when the NACK message is transmitted to the subscriber station, the subscriber station increases the transmit power of the uplink frame as determined by
OffsetperAT=OffsetperAT+UP_STEP if NACK is received,
where OffsetperAT represents a compensation value according to each subscriber station, and UP_STEP represents increase of the OffsetperAT.
10. The base station apparatus in claim 1, wherein when the ACK message is transmitted to the subscriber station the subscriber station decreases the transmit power of the uplink frame.
11. The base station apparatus in claim 1, wherein when the ACK message is transmitted to the subscriber station the subscriber station decreases the transmit power of the uplink frame as determined by
Offset
perAT
=
Offset
perAT
–
1
1
FER
target
–
1
\ue89e
UP_STEP
if ACK is received, where OffsetperAT represents a compensation value according to each subscriber station, UP_STEP represents increase of OffsetperAT, and FERtarget is a target value of a Frame Error Rate (FER).
12. A method for transmitting data by a base station in order to determine transmit power of an uplink frame transmitted from a subscriber station to the base station in a mobile communication system in which a downlink frame transmitted from the base station to the subscriber station and the uplink frame are time division-duplexed (TDD), the method comprising the steps of:
determining if an error has occurred in uplink frame received from the subscriber station;
transmitting information related to whether or not the error has occurred in an uplink frame to an upper layer; and
generating an ACKNACK message of the upper layer according to the information for transmitting data in order to determine transmit power of the uplink frame transmitted from the subscriber station to the base station.
13. The method in claim 12, further comprising a step of performing a transmission processing for the generated ACKNACK message.
14. The method in claim 12, wherein the base station transmits reception interference and noise level of the base station for determining the transmit power of the uplink frame to the subscriber station.
15. The method in claim 12, wherein the reception interference measured by the base station is measured in a unit of a frame.
16. The method in claim 12, wherein the reception interference measured by the base station is measured in a unit of a time slot.
17. The method in claim 12, wherein the base station transmits transmit power of a pilot or broadcast channel to the subscriber station so that path loss can be measured in the subscriber station, in order to determine the transmit power of the uplink frame.
18. The method in claim 12, wherein the base station transmits a target signal strength for determining the transmit power of the uplink frame to the subscriber station.
19. The method in claim 12, wherein, when the NACK message is transmitted to the subscriber station, the subscriber station increases the transmit power of the uplink frame.
20. The method in claim 12, wherein, when the NACK message is transmitted to the subscriber station, the subscriber station increases the transmit power of the uplink frame as determined by
OffsetperAT=OffsetperAT+UP_STEP if NACK is received,
where OffsetperAT represents a compensation value according to each subscriber station, and UP_STEP represents increase of the OffsetperAT.
21. The method in claim 12, wherein, when the ACK message is transmitted to the subscriber station, the subscriber station decreases the transmit power of the uplink frame.
22. The method in claim 12, wherein, when the ACK message is transmitted to the subscriber station, the subscriber station decreases the transmit power of the uplink frame as determined by
Offset
perAT
=
Offset
perAT
–
1
1
FER
target
–
1
\ue89e
UP_STEP
if ACK is received, where OffsetperAT represents a compensation value according to each subscriber station, UP_STEP represents increase of the OffsetperAT, and FERtarget is a target value of a Frame Error Rate (FER).
23. A base station apparatus for transmitting data in order to determine transmit power of an uplink frame transmitted from a subscriber station to a base station in a mobile communication system in which a downlink frame, transmitted from the base station to the subscriber station, and the uplink frame are time division-duplexed (TDD), the base station apparatus comprising:
an error detector and an acknowledgenon-acknowledge (AN) symbol generator for determining if an error has occurred in uplink frame received from the subscriber station, and generating an ACKNACK symbol according to whether or not the error has occurred in uplink frame;
an AN encoder for encoding the generated ACKNACK symbol; and
a modulator for modulating the encoded ACKNACK symbol and generating a dedicated control channel.
24. The base station apparatus in claim 23, further comprising a multiplexer for multiplexing the dedicated control channel generated by the modulator and physical channels different from the dedicated control channel.
25. The base station apparatus in claim 23, wherein the base station apparatus transmits a target signal strength for determining the transmit power of the uplink frame to the subscriber station.
26. The base station apparatus in claim 23, wherein, when the NACK message is transmitted to the subscriber station, the subscriber station increases the transmit power of the uplink frame.
27. The base station apparatus in claim 23, wherein, when the NACK message is transmitted to the subscriber station, the subscriber station increases the transmit power of the uplink frame as determined by
OffsetperAT=OffsetperAT+UP_STEP if NACK is received,
where OffsetperAT represents a compensation value according to each subscriber station, and UP_STEP represents increase of the OffsetperAT.
28. The base station apparatus in claim 23, wherein, when the ACK message is transmitted to the subscriber station, the subscriber station decreases the transmit power of the uplink frame.
29. The base station apparatus in claim 23, wherein, when the ACK message is transmitted to the subscriber station, the subscriber station decreases the transmit power of the uplink frame as determined by
Offset
perAT
=
Offset
perAT
–
1
1
FER
target
–
1
\ue89e
UP_STEP
if ACK is received, where OffsetperAT represents a compensation value according to each subscriber station, UP_STEP represents increase of the OffsetperAT, and FERtarget is a target value of a Frame Error Rate (FER).
30. A method for transmitting data by a base station in order to determine transmit power of an uplink frame transmitted from a subscriber station to the base station in a mobile communication system in which a downlink frame transmitted from the base station to the subscriber station and the uplink frame are time division-duplexed (TDD), the method comprising the steps of:
determining if an error has occurred in uplink frame received from the subscriber station;
generating an ACKNACK message of a physical layer according to whether or not the error has occurred in uplink frame; and
encoding and modulating the generated ACKNACK message of the physical layer and generating a dedicated control channel.
31. The method in claim 30, further comprising a step of multiplexing the generated dedicated control channel and physical channels different from the dedicated control channel.
32. The method in claim 30, wherein the base station apparatus transmits a target signal strength for determining the transmit power of the uplink frame to the subscriber station.
33. The method in claim 30, wherein, when the NACK message is transmitted to the subscriber station, the subscriber station increases the transmit power of the uplink frame.
34. The method in claim 30, wherein, when the NACK message is transmitted to the subscriber station, the subscriber station increases the transmit power of the uplink frame as determined by
OffsetperAT=OffsetperAT+UP_STEP if NACK is received,
where OffsetperAT represents a compensation value according to each subscriber station, and UP_STEP represents increase of the OffsetperAT.
35. The method in claim 30, wherein, when the ACK message is transmitted to the subscriber station, the subscriber station decreases the transmit power of the uplink frame.
36. The method in claim 30, wherein, when the ACK message is transmitted to the subscriber station, the subscriber station decreases the transmit power of the uplink frame as determined by
Offset
perAT
=
Offset
perAT
–
1
1
FER
target
–
1
\ue89e
UP_STEP
if ACK is received, where OffsetperAT represents a compensation value according to each subscriber station, UP_STEP represents increase of the OffsetperAT, and FERtarget is a target value of a Frame Error Rate (FER).