1. An access method for accessing a memory circuit block comprising a memory array in which a plurality of wordlines and a plurality of bitlines are provided in matrix form, said respective wordlines consisting of read wordlines and write wordlines, and memory elements are provided at the intersections of the wordlines and the bitlines, each of said memory element including at least a ferromagnetic layer having a magnetization direction determined by the orientation of a magnetic field generated by an electric current passing through respective bitline; a read wordline driver for providing a read signal to said read wordline; and a read circuit for providing a bitline read signal to said bitline, said access method comprising the steps of:
providing a first read signal onto a first read wordline to activate said first read wordline;
providing said bitline read signal to a first bitline; and
thereafter providing a second read signal onto a second read wordline while said first read signal is falling.
2. The memory circuit block access method according to claim 1, further comprising reading data from a first memory element at the intersection of said first read wordline and said first bitline.
3. The memory circuit block access method according to claim 1, further comprising providing a bitline read signal to a second bitline when providing said second read signal to said second read wordline.
4. The memory circuit block access method according to claim 3 further comprising, after providing said bitline read signal to said second bitline, reading data from a second memory element at the intersection of said second read wordline and said second bitline.
5. A magnetic random access memory (MRAM) array circuit block, comprising:
a memory array in which a plurality of wordlines and a plurality of bitlines are provided in matrix form, said respective wordlines comprising read wordlines and write wordlines, respectively, and memory elements provided at intersections of said wordlines and said bitlines, each said memory element including at least a ferromagnetic layer having a magnetization direction determined by the orientation of a magnetic field generated by an electric current passing through a respective bitline coupled to said memory element;
a read wordline driver adapted to provide a read signal onto a first read wordline and adapted to provide a read signal onto a second read wordline while said first read signal is active; and
a read circuit for providing a bitline read signal to said bitline.
6. The memory circuit block according to claim 5, wherein said read circuit is adapted to provide said bitline read signal to a predetermined bitline while said read signal is provided sequentially to respective ones of said plurality of read wordlines.
7. The memory circuit block according to claim 6, wherein said memory element comprises an MTJ (Magnetic Tunnel Junction) element or a GMR (giant magnetoresistive) element.
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 trailer comprising:
a body having a front end, a back end, an upper surface, a lower surface which is generally parallel to the upper surface and extends from the front end to the back end, a top wall defining the upper surface, a bottom wall defining the lower surface, a front wall adjacent the front end extending from the top wall to the bottom wall, and a back wall adjacent the back end extending from the top wall to the bottom wall so that the walls together define an internal cavity;
a plurality of wheels mounted on and extending downwardly of the body proximate the back end;
a coupling assembly which is mounted on the body adjacent the front end and is adapted to be selectively connected to a towing vehicle; and
a first support beam of the coupling assembly having front and back ends between which the beam is elongated; wherein the first support beam extends through the front wall adjacent and above the bottom wall with the back end of the beam within the internal cavity and the front end of the beam forward of the front wall and external to the internal cavity.
2. The trailer of claim 1 wherein the coupling assembly further comprises a reinforcement plate which is within the internal cavity and rests on the bottom wall directly below the first support beam.
3. The trailer of claim 2 wherein the bottom wall is curved as viewed from the front end; and the reinforcing plate is curved as viewed from the front end so that the reinforcing plate conforms to the bottom wall; the coupling assembly further comprises a horizontal distribution plate which is within the internal cavity and rests on the curved reinforcing plate; and the first support beam rests on the horizontal distribution plate.
4. The trailer of claim 3 wherein the coupling assembly further comprises a second support beam having front and back ends between which the second support beam is elongated; wherein the second support beam extends through the front wall adjacent and above the bottom wall with the back end of the second support beam within the internal cavity and the front end of the second support beam forward of the front wall and external to the internal cavity; the second support beam is spaced apart from the first support beam; and the second support beam rests on the horizontal distribution plate.
5. The trailer of claim 4 wherein the coupling assembly further comprises a top plate which is within the internal cavity and has a horizontal portion which rests on the first and second support beams.
6. The trailer of claim 5 wherein the top plate comprises an angled portion which angles downwardly and rearwardly beyond the back ends of the support beams and contacts the bottom wall rearwardly of the back ends of the support beams.
7. The trailer of claim 6 wherein the angled portion has a curved lower edge which rests on and conforms to the curved bottom wall.
8. The trailer of claim 1 further comprising a kingpin assembly;
and a kingpin which extends downwardly from the kingpin assembly and is adapted to couple with a towing vehicle coupling assembly of the towing vehicle; wherein the kingpin assembly is mounted on the first support beam at a location forward of the front wall external to the internal cavity and extends downwardly therefrom.
9. The trailer of claim 8 further comprising an actuator which is secured to the front end of the trailer body and to the kingpin assembly; and wherein the actuator is extendable to lift the front end of the body.
10. The trailer of claim 8 further comprising a pair of generally horizontal beams secured to the kingpin assembly and extending rearwardly therefrom; and landing gear secured to and extending downwardly from the beams for supporting the front end of the body when not coupled to the towing vehicle.
11. A trailer comprising:
a body having front and back ends and comprising a front wall adjacent the front end, a back wall adjacent the back end, a top wall, a bottom wall and a pair of opposed side walls which together define therewithin an internal cavity;
a plurality of wheels mounted on and extending downwardly of the body proximate the back end;
a through opening formed in the front wall adjacent and higher than the bottom wall:
a trailer coupling assembly secured to the body;
a first portion of the trailer coupling assembly disposed within the cavity adjacent the bottom wall and front end of the trailer body and extending forward through the through opening; and
a second portion of the trailer coupling assembly secured to the first portion and extending forward from adjacent the through opening external to the cavity and adapted for coupling the trailer to a towing vehicle.
12. The trailer of claim 11 wherein the first portion rests on the bottom wall.
13. The trailer of claim 12 wherein the first portion comprises a reinforcing plate which rests on the bottom wall.
14. The trailer of claim 11 wherein the bottom wall is curved as viewed from the front end; and the reinforcing plate is curved as viewed from the front end so that the reinforcing plate conforms to the bottom wall.
15. The trailer of claim 11 wherein the first portion comprises a generally horizontal plate which is spaced upwardly of the bottom wall.
16. The trailer of claim 15 wherein each of the bottom wall and the generally horizontal plate serve as part of a floor of the internal cavity.
17. The trailer of claim 11 further comprising a kingpin assembly; and a kingpin which extends downwardly from the kingpin assembly and is adapted to couple with a towing vehicle coupling assembly of the towing vehicle; wherein the kingpin assembly is mounted on the second portion at a location forward of the front wall external to the internal cavity and extends downwardly therefrom.
18. The trailer of claim 17 further comprising an actuator which is secured to the front end of the trailer body and to the kingpin assembly; and wherein the actuator is extendable to lift the front end of the body.
19. The trailer of claim 17 further comprising a pair of generally horizontal beams secured to the kingpin assembly and extending rearwardly therefrom; and landing gear secured to and extending downwardly from the beams for supporting the front end of the body when not coupled to the towing vehicle.
20. The trailer of claim 1 wherein the trailer is a half round trailer; the bottom wall is curved as viewed from the front; and the front wall has a generally semi-circular shape.
21. The trailer of claim 1 further comprising a first front support having upper and lower ends between which the first front support is elongated; wherein the first front support is secured to the front wall and extends forward therefrom external to the internal cavity with the upper end of the first front support adjacent the top wall and the lower end of the first front support adjacent the bottom wall so that the first front support extends upwardly from the first support beam.
22. The trailer of claim 1 further comprising first and second parallel and spaced apart front supports which are secured to the front wall external to the internal cavity and which extend from adjacent the bottom wall to adjacent the top wall; and a second support beam of the coupling assembly having front and back ends between which the second support beam is elongated; wherein the second support beam extends through the front wall adjacent and above the bottom wall with the back end of the second support beam within the internal cavity and the front end of the second support beam forward of the front wall and external to the internal cavity; the second support beam is spaced apart from the first support beam; and the first and second front supports extend respectively upwardly from the first and second support beams.
23. The trailer of claim 22 further comprising a pin mounted on and extending between the first and second front supports; and an actuator having an upper end secured to the pin; wherein the actuator is extendable to lift the front end of the body of the trailer.
24. The trailer of claim 4 wherein the horizontal distribution plate has first and second opposed side edges; the distribution plate rests on the curved reinforcement plate along the first and second side edges; and the first and second support beams rest on the horizontal distribution plate respectively along the first and second opposed edges.
25. The trailer of claim 4 further comprising first and second parallel and spaced apart front supports which are secured to the front wall external to the internal cavity, which extend from adjacent the bottom wall to adjacent the top wall and which extend respectively upwardly from the first and second support beams.
26. The trailer of claim 11 wherein the trailer is a half round trailer; the bottom wall is curved as viewed from the front; and the front wall has a generally semi-circular shape.
27. The trailer of claim 14 wherein the first portion comprises a horizontal distribution plate which rests on the curved reinforcing plate.
28. The trailer of claim 27 wherein the coupling assembly comprises a first support beam having front and back ends between which the first support beam is elongated; wherein the first support beam is adjacent and above the bottom wall with the back end of the first support beam within the internal cavity and the front end of the first support beam forward of the front wall and external to the internal cavity; and the first support beam rests on the horizontal distribution plate.
29. The trailer of claim 28 wherein the coupling assembly comprises a second support beam having front and back ends between which the second support beam is elongated; wherein the second support beam is adjacent and above the bottom wall with the back end of the second support beam within the internal cavity and the front end of the second support beam forward of the front wall and external to the internal cavity; the second support beam is spaced apart from the first support beam; and the second support beam rests on the horizontal distribution plate.
30. The trailer of claim 29 wherein the coupling assembly further comprises a top plate which is within the internal cavity and has a horizontal portion which rests on the first and second support beams and serves as part of a floor of the internal cavity.
31. The trailer of claim 29 wherein the horizontal distribution plate has first and second opposed side edges; the distribution plate rests on the curved reinforcement plate along the first and second side edges; and the first and second support beams rest on the horizontal distribution plate respectively along the first and second opposed edges.