1. An optical testing port disposed on an integrated circuit, comprising:
a photodetector that receives an optical test signal and that outputs a corresponding electrical test signal, the electrical test signal carrying test input information;
a phototransmitter; and
testing circuitry that receives the electrical test signal from the photodetector, that uses the test input information to test a circuit on the integrated circuit, and that outputs an electrical signal to the phototransmitter such that the phototransmitter transmits an optical signal indicative of a result of the test.
2. The optical testing port of claim 1, wherein the photodetector is a silicon diode, and wherein the phototransmitter is a silicon diode.
3. The optical testing port of claim 1, wherein the testing circuitry is a JTAG circuit, and wherein the optical testing port is an optical JTAG port.
4. An optical test port disposed on an integrated circuit, the optical test port comprising:
a photodetector;
a phototransmitter; and
means for receiving the test input information from the photodetector, for using the test input information to perform a test on at least a portion of the integrated circuit, and for driving the phototransmitter such that a result of the test is output from the phototransmitter in optical form.
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 crop header arranged for cutting and transporting a standing crop comprising:
a header frame;
an elongate metal cutter bar arranged along a front edge of the frame;
a draper assembly mounted on the header frame rearwardly of the cutter bar such that cut crop falls onto the draper assembly for transportation longitudinally of the header;
the draper assembly including a first and a second draper guide roller each arranged at a respective end of the draper assembly spaced apart along the cutter bar with an axis of each guide roller arranged substantially at right angles to the cutter bar;
the draper assembly including a continuous loop of flexible material arranged to be wrapped around the rollers so as to define an upper run of the flexible material on top of the rollers and a lower run of the flexible material below the rollers;
wherein the flexible material includes a front edge of the upper run of the flexible material arranged at a position adjacent to but spaced from the cutter bar;
the elongate metal cutter bar including an upper metal wall extending rearwardly to a position adjacent to and spaced forwardly of the front edge of the flexible material and a depending rear metal wall extending downwardly from the upper wall between the upper wall and the front edge to a height below the front edge;
and a plastics sealing member separate from and attached to the cutter bar so as to extend along the cutter bar;
the sealing member comprising a first portion attached to the cutter bar and a second flexible blade portion which extends rearwardly from the first portion at the cutter bar to lie over and in contact with a front edge portion of the upper run of the flexible material adjacent the front edge;
wherein the sealing member including the first portion and the second flexible blade portion is an integral plastics extrusion;
wherein the first portion of the sealing member includes an upper leg lying along and in contact with the upper wall of the cutter bar and a depending leg extending downwardly from the upper leg along and in contact with the depending wall of the cutter bar at a position between the upper wall and the front edge of the flexible material to a height below the front edge;
and wherein the second flexible blade portion is connected to the first portion at or adjacent a junction between the upper leg and the depending leg.
2. The header according to claim 1
wherein the sealing member has along a full length of the sealing member between the first and second end edges of the sealing member a cross-section which is constant.
3. The header according to claim 2 wherein the first portion and the second flexible blade portion are formed of co-extruded plastic materials, where a plastics material forming the first portion is stiffer for attachment to the cutter bar than a plastics material forming the flexible second portion.
4. The header according to claim 3 wherein the plastics material forming the second flexible blade portion transitions to the plastics material forming the first portion at the cutter bar so that the whole of the second flexible blade portion from the cutter bar can flex upwardly and downwardly.
5. The header according to claim 2 wherein the front edge portion of the flexible material includes a thickened layer of rubber so that an underside of the second flexible blade portion runs along an upper surface of the thickened layer of rubber.
6. The header according to claim 2 wherein the first portion includes an arch shaped portion of the upper leg depending downwardly at a front of the cutter bar so as to cover upper and front surfaces of the cutter bar.
7. The header according to claim 2 wherein the first portion is bolted in place on the cutter bar at spaced positions along the cutter bar.
8. The header according to claim 2 wherein the second flexible blade portion is free to flex upwardly and downwardly at all positions therealong from the cutter bar rearwardly.
9. The header according to claim 2 wherein there is provided a support surface carried on the frame for engaging the flexible material rearwardly of the front edge so that the front edge portion of the flexible material is cantilevered beyond the support surface and wherein the second flexible blade portion contacts the flexible material at the cantilevered front edge portion.
10. The header according to claim 1
wherein the first portion and the second flexible blade portion are formed of co-extruded first and second plastic materials, where the first plastics material forming the first portion is stiffer than the second plastics material forming the second flexible blade portion.
11. The header according to claim 10 wherein the second plastics material forming the second flexible blade portion transitions to the first plastics material forming the first portion at the cutter bar so that the whole of the second flexible blade portion from the cutter bar can flex upwardly and downwardly.
12. The header according to claim 10 wherein the front edge portion of the flexible material includes a thickened layer of rubber so that an underside of the second flexible blade portion runs along an upper surface of the thickened layer of rubber.
13. The header according to claim 10 wherein the first portion includes an arch shaped portion of the upper leg depending downwardly at a front of the cutter bar so as to cover upper and front surfaces of the cutter bar.
14. The header according to claim 10 wherein the first portion is bolted in place on the cutter bar at spaced positions along the cutter bar.
15. The header according to claim 10 wherein the second flexible blade portion is free to flex upwardly and downwardly at all positions therealong from the cutter bar rearwardly.
16. The header according to claim 10 wherein there is provided a support surface carried on the frame for engaging the flexible material rearwardly of the front edge so that the front edge portion of the flexible material is cantilevered beyond the support surface and wherein the second flexible blade portion contacts the flexible material at the cantilevered front edge portion.
17. The header according to claim 1 wherein the front edge portion of the flexible material includes a thickened layer of rubber so that an underside of the second flexible blade portion runs along an upper surface of the thickened layer of rubber.
18. The header according to claim 1 wherein the first portion includes an arch shaped portion of the upper leg depending downwardly at a front of the cutter bar so as to cover upper and front surfaces of the cutter bar.
19. The header according to claim 1 wherein the upper leg of the first portion is bolted in place on the cutter bar at spaced positions along the cutter bar.
20. The header according to claim 1 wherein the second flexible blade portion is free to flex upwardly and downwardly at all positions therealong from the cutter bar rearwardly.
21. The header according to claim 1 wherein there is provided a support surface carried on the frame for engaging the flexible material rearwardly of the front edge so that the front edge portion of the flexible material is cantilevered beyond the support surface and wherein the second flexible blade portion contacts the flexible material at the cantilevered front edge portion.