1. A trailer apparatus for transporting an elongated utility pole from a loading location to an unloading location, the utility pole having a substantially rigid continuous outer surface extending from a first end to a second end thereof in substantially parallel spaced relation to a pole central axis, the trailer apparatus comprising:
a major frame assembly having a front, the major frame assembly having a rear disposed in opposed relation to the front, the rear being spaced from the front in a rearward direction relative to a trailer frame longitudinal axis, the major frame assembly extending from the front to the rear relative to the trailer frame longitudinal axis, the trailer frame longitudinal axis defining longitudinal extent of a trailer frame longitudinal plane, the trailer frame longitudinal plane extending in a vertical direction, the trailer frame longitudinal plane substantially bisecting the major frame assembly intermediate oppositely disposed lateral halves thereof, the lateral halves including a first half defined on a first side of the trailer frame longitudinal plane in lateral relation thereto, the halves including a second half defined on a second side of the trailer frame longitudinal plane in lateral relation thereto;
a forward trailer hitch component joined to the major frame assembly proximate the front, the forward trailer hitch component being configured for coupling with a compatible drawing hitch component of a truck to enable the trailer apparatus to be drawn by the truck;
the major frame assembly defining an elongated carrying bay, the carrying bay having a carrying bay longitudinal plane extending substantially parallel to the trailer frame longitudinal plane, the carrying bay having a clear span width perpendicular to the carrying bay longitudinal plane, the clear span width being sufficient to permit the utility pole to be received in the carrying bay in a transport position, in the transport position the pole central axis extending in a substantially horizontal orientation, the carrying bay having a clear span height in the vertical direction, the clear span height being sufficient to permit the utility pole to be received in the carrying bay in the transport position with clearance between the utility pole and the ground adequate to permit transport of the utility pole on the trailer apparatus;
the major frame assembly having an upper portion, the upper portion spanning above the carrying bay from the first half to the second half to provide the clear span height thereunder;
the major frame assembly in the first half having a first side portion, the first side portion extending downwardly from the upper portion, the first side portion terminating below the upper portion in spaced relation thereto at a respective first lower portion, the major frame assembly in the second half having a second side portion, the second side portion extending downwardly from the upper portion, the second side portion terminating below the upper portion in spaced relation thereto at a respective second lower portion, the upper portion spanning from the first side portion to the second side portion to join the same in fixed relation, the first side portion being spaced from the second side portion with the carrying bay disposed there between to provide the clear span width there between, the first side portion extending upward from the first lower portion to the upper portion to support the upper portion in the first half at the clear span height, the second side portion extending upward from the second lower portion to the upper portion to support the upper portion in the second half at the clear span height; at least one first rear trailer wheel mounted on a first rear axle at the first lower portion to support the trailer apparatus for rolling movement across the ground, the first rear axle being clear of the carrying bay;
at least one second rear trailer wheel mounted on a second rear axle at the second lower portion to support the trailer apparatus for rolling movement across the ground, the second rear axle being clear of the carrying bay;
the major frame assembly at the rear spanning above the carrying bay to provide a rear opening of the carrying bay, the rear opening permitting clear access from outside the rear to the carrying bay in the direction of the trailer frame longitudinal plane, the rear opening having a respective clear span height sufficient for the major frame assembly to clear the utility pole at rest on the ground in a ground storage position, in the ground storage position the pole longitudinal axis extending in a substantially horizontal direction, such that when the trailer is backed in the longitudinal direction over the utility pole occupying the ground storage position with the trailer frame longitudinal plane substantially coextensive with the pole central axis the rear opening passes around the utility pole as the trailer moves backward for positioning the carrying bay in alignment with a corresponding lengthwise segment of the utility pole, the rear opening having a respective clear span height sufficient for an adjoining second lengthwise segment of the utility pole in the transport position to protrude out of the carrying bay through the rear opening; and
a lifting apparatus supported by the major frame assembly, the lifting apparatus including pole engaging apparatus positionable in the carrying bay, the pole engaging apparatus being configurable to engage the utility pole in lifting relationship therewith, the lifting apparatus being selectively operable for lifting at least the lengthwise segment of the utility pole fitting in the carrying bay from the ground storage position to the transport position, the lifting apparatus being selectively operable for lowering the utility pole from the transport position to the ground storage position,
wherein the lifting apparatus includes at least one hoist and hoist cable combination, the at least one hoist cable cooperating with suitable adjustable rigging to engage the utility pole in a lifting relationship, the at least one hoist being selectively operable to raise the at least one hoist cable to cause the same to lift the utility pole, the at least one hoist including a hoist motor for driving the hoist cable between trained drive gears, the trained drive gears being between the hoist motor and the hoist cable.
2. Trailer apparatus according to claim 1 and further comprising:
at the front the major frame assembly spanning above the carrying bay to provide a forward opening to the carrying bay, the forward opening providing clearance sufficient for the trailer to clear the utility pole at rest in a ground storage position when the trailer is moved forward in the longitudinal direction over the utility pole with the trailer frame longitudinal plane substantially coextensive with the pole longitudinal axis for positioning the carrying bay in alignment with the utility pole.
3. Trailer apparatus according to claim 1 and further comprising:
at least one first forward trailer wheel mounted on a first forward axle at the first lower portion to support the trailer apparatus for rolling movement across the ground, the first forward axle being clear of the carrying bay, the first forward axle being spaced forward of the first rear axle in parallel relation thereto;
at least one second forward trailer wheel mounted on a respective second forward axle at the second lower portion to support the trailer apparatus for rolling movement across the ground, the second forward axle being clear of the carrying bay, the second forward axle being spaced forward of the second rear axle in parallel relation thereto.
4. Trailer apparatus according to claim 3 and further comprising:
at least one slave unit first forward trailer wheel substantially identical to the first forward trailer wheel of the trailer apparatus; and
at least one slave unit second forward trailer wheel substantially identical to the second forward trailer wheel of the trailer apparatus.
5. Trailer apparatus according to claim 1 and further comprising:
primary support apparatus mounted on the major frame assembly, the primary support apparatus being selectively positionable relative to the utility pole in the carrying bay to provide primary support for the utility pole during transport of the same.
6. Trailer apparatus according to claim 5 and further comprising:
the primary support apparatus including a movable support element mounted on the major frame assembly for selective movement relative thereto to a supporting position, the movable support element in the supporting position engaging the utility pole in the carrying bay to provide primary support forces against the utility pole during transport of the same.
7. Trailer apparatus according to claim 1 and further comprising:
a rear training connector compatible with a forward training connector of a slave unit trailer apparatus for training the slave unit trailer apparatus with the trailer apparatus according to claim 1;
where the utility pole has a projecting section extending out the rear of the trailer apparatus according to claim 1, the slave unit trailer apparatus having a slave unit carrying bay for receiving therein a portion of the projecting section of the utility pole; the slave unit trailer apparatus comprising:
a slave unit major frame assembly, the slave unit major frame assembly being substantially identical to the major frame assembly of the trailer apparatus according to claim 1;
the forward training connector of the slave unit trailer apparatus joined to the slave unit major frame assembly proximate the front of the same, the forward training component being configured for coupling with the compatible rear training connector of the trailer apparatus preceding the slave unit trailer apparatus to enable the slave unit trailer apparatus to be drawn with the same;
the slave unit carrying bay being substantially identical to the carrying bay of the trailer apparatus according to claim 1; at least one slave unit first rear trailer wheel substantially identical to the first rear trailer wheel of the trailer apparatus according to claim 1;
at least one slave unit second rear trailer wheel substantially identical to the second rear trailer wheel of the trailer apparatus according to claim 1; and
a slave unit lifting apparatus mounted on the slave unit major frame assembly, the slave unit lifting apparatus being substantially identical to the lifting apparatus of the trailer apparatus according to claim 1.
8. Trailer apparatus according to claim 7 and further comprising:
wherein the slave unit trailer apparatus is trained in substantially fixed linear relationship with the preceding trailer apparatus according to claim 1 to enable the slave unit trailer apparatus to be backed in a common direction with the preceding trailer apparatus according to claim 1.
9. A trailer apparatus for transporting an elongated utility pole from a loading location to an unloading location, the utility pole having a substantially rigid continuous outer surface extending from a first end to a second end thereof in substantially parallel spaced relation to a pole central axis, the trailer apparatus comprising:
a major frame assembly having a front, the major frame assembly having a rear disposed in opposed relation to the front, the rear being spaced from the front in a rearward direction relative to a trailer frame longitudinal axis, the major frame assembly extending from the front to the rear;
a forward trailer hitch component joined to the major frame assembly proximate the front, the forward trailer hitch component being configured for coupling with a compatible drawing hitch component of a truck to enable the trailer apparatus to be drawn by the truck;
the major frame assembly defining an elongated carrying bay;
the major frame assembly having an upper portion;
the major frame assembly at the rear spanning above a carrying bay to provide a rear opening of the carrying bay, the rear opening permitting clear access from outside the rear to the carrying bay, the rear opening having a respective clear span height sufficient for the major frame assembly to clear the utility pole at rest on the ground in a ground storage position; and
a lifting apparatus supported by the major frame assembly, the lifting apparatus including pole engaging apparatus positionable in the carrying bay, the pole engaging apparatus being configurable to engage the utility pole in lifting relationship therewith, the lifting apparatus being selectively operable for lifting the utility pole fitting in the carrying bay from the ground storage position to a transport position, the lifting apparatus being selectively operable for lowering the utility pole from the transport position to the ground storage position,
the lifting apparatus including at least one hoist and hoist cable combination, the at least one hoist cable cooperating with suitable adjustable rigging to engage the utility pole in a lifting relationship, the at least one hoist being selectively operable to raise the at least one hoist cable to cause the same to lift the utility pole, the at least one hoist including a hoist motor for driving the hoist cable between trained drive gears, the trained drive gears being between the hoist motor and the hoist cable.
10. The trailer apparatus according to claim 9 and further comprising:
primary support apparatus mounted on the major frame assembly, the primary support apparatus being selectively positionable relative to the utility pole in the carrying bay to provide primary support for the utility pole during transport of the same.
11. The trailer apparatus according to claim 10 and further comprising:
the primary support apparatus including a movable support element mounted on the major frame assembly for selective movement relative thereto to a supporting position, the movable support element in the supporting position engaging the utility pole in the carrying bay to provide primary support forces against the utility pole during transport of the same.
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 disk device, comprising:
an optical pickup unit to be driven by a supplied write pulse string to record data on an optical disk;
an optical pickup driving unit to generate and supply the write pulse string to the optical pickup unit;
an energy level calculator to calculate an energy level of the write pulse string generated by the optical pickup driving unit; and
a controller to control the generation of the write pulse string of the optical pickup driving unit, so that the calculated energy level is proximate to a predetermined reference energy level.
2. The device according to claim 1, wherein the controller controls the optical pickup driving unit to adjust the write pulse string in response to an absolute value of a difference between the calculated energy level and the reference energy level exceeding a predetermined threshold level.
3. The device according to claim 1, wherein the energy level calculator comprises:
a write pulse power measuring part to measure power levels of write pulses forming the write pulse string;
a write pulse width measuring part to measure pulse widths of the write pulses forming the write pulse string;
a multiplier to multiply the power levels provided from the write pulse power measuring part by the write pulse widths provided from the write pulse width measuring part, respectively; and
an adder to add all of the multiplication results to calculate the energy level.
4. The device according to claim 1, wherein the energy level calculator integrates the write pulse string, and outputs the integration result as the energy level.
5. The device according to claim 1, wherein the write pulse string comprises at least one of a multi-type write pulse string, a non-multi type write pulse string, a castle type write pulse string, or a combination thereof.
6. A method of optimizing a write pulse string, the method comprising:
generating a write pulse string to use in recording data on an optical disk;
calculating an energy level of the generated write pulse string; and
controlling the generation of the write pulse string to approximate the calculated energy level to a predetermined reference energy level.
7. The method according to claim 6, wherein the write pulse string is adjusted in response to an absolute value of a difference between the calculated energy level and the reference energy level exceeding a predetermined threshold level.
8. The method according to claim 6, wherein the calculation of the energy level of the generated write pulse string comprises:
measuring power levels of write pulses of the write pulse string;
measuring write pulse widths of write pulses of the write pulse string;
multiplying the measured power levels by the measured write pulse widths, respectively; and
adding all of the multiplication results to calculate the energy level.
9. The method according to claim 6, wherein the energy level is calculated by integrating the write pulse string, and the integrated value is outputted as the energy level.
10. The method according to claim 6, wherein the write pulse string comprises at least one of a multi-type write pulse string, a non-multi type write pulse string, a castle-type write pulse string, or a combination thereof.
11. An optical disk device, comprising:
an energy level measuring unit to measure an energy level of a write pulse string used in recording data on an optical disk; and
a controller to control a generation of the write pulse string so that the energy level is within a predetermined range above or below a reference energy level.
12. The device according to claim 11, further comprising a write pulse string generation unit to generate the write pulse string, wherein the controller controls the write pulse string generation unit to adjust the energy level of the write pulse string to within the predetermined range.
13. The device according to claim 11, wherein the energy level measuring unit measures power levels of write pulses of the write pulse string, measures pulse widths of the write pulses, multiplies the power levels by the respective pulse widths, and sums the multiplication results to measure the energy level.
14. The device according to claim 11, wherein the write pulse string is adjusted in response to an absolute value of a difference between the measured energy level and the reference energy level being larger than a predetermined value.
15. The device according to claim 11, wherein the energy level is adjusted by changing a timing of write pulses of the write pulse string, a width of the write pulses, intervals between the write pulses, or a combination thereof.
16. A method of generating a write pulse string, the method comprising:
measuring an energy level of the write pulse string used in recording data on an optical disk; and
controlling a generation of the write pulse string so that the energy level is within a predetermined range above or below a reference energy level.
17. The method of claim 16, wherein the measuring the energy level comprises:
measuring power levels of write pulses of the write pulse string;
measuring pulse widths of the write pulses;
multiplying the power levels by the respective pulse widths; and
summing the multiplication results.
18. The method of claim 16, further comprising adjusting the write pulse string in response to an absolute value of a difference between the measured energy level and the reference energy level being larger than a predetermined value.
19. The method of claim 16, wherein the energy level is adjusted by changing a timing of write pulses of the write pulse string, a width of the write pulses, intervals between the write pulses, or a combination thereof.
20. The method of claim 16, further comprising finely adjusting the write pulse string through error rate measurement in response to the energy level being within the predetermined range.