1. A blade which is a part of a binding device forming a binding hole and a cut hole and binding a plurality of sheet bodies together by using a cut and raised piece cut and raised out of the binding hole and the cut hole, the blade comprising:
a core;
an outer covering comprising a sheet metal and covering an outside of the core; and
a cutting edge including a curved portion having a curved arc shape in a bottom view and liner portions extending from both ends of the curved portion in the bottom view, the cutting edge being continuous in a U shape and formed at a tip end of the outer covering, the curved portion comprising:
a blade tip end portion which first comes in contact with a sheet bodies, a portion of which includes substantially a point, in starting to form a hole before sharply stuck into the sheet bodies; and
an adjacent portion adjacent to the blade tip end portion and formed concave curve in a front view, the cutting edge except the blade tip end portion and the adjacent portion being formed liner in the front view.
2. The blade according to claim 1, wherein the cutting edge is sharpest at the blade tip end portion.
3. The blade according to claim 1, wherein the binding device includes a punching plate for forming the binding holes in the sheet bodies in cooperation with the blade, and the cutting edge is inclined at an entry angle, which one face of the sheet bodies supported on the punching plate makes with the cutting edge immediately before entering the sheet bodies, and the entry angle is set to gradually reduce as the blade penetrates.
4. The blade according to claim 1, wherein the binding device includes a punching plate for forming the binding holes in the sheet bodies in cooperation with the blade, and the cutting edge is inclined for the blade tip end portion first comes in contact with the portion of the sheet bodies, which includes substantially the point, and then punching is carried out while a punching distance by the cutting edge increases with respect to their penetrating distance.
5. The blade according to claim 1, wherein the binding device includes a cutting blade for forming the cut hole and comprising a window for receiving the blade in a turning attitude.
6. The blade according to claim 5, wherein the window receives a portion of a blade main body with the cutting edge which has turned to the turning attitude.
7. The blade according to claim 5, wherein the binding device includes an actuating handle to cause the blade and the cutting blades to penetrate the sheet bodies, turning from a punching attitude to the turning attitude by operating the actuating handle.
8. The blade according to claim 5, further comprising:
a shelter space for allowing the cut and raised piece cut and raised by the blade main body with the cutting edge to shelter in an upper space surrounded with the cutting edge; and
a pushing-out portion for inserting the cut and raised piece into the window above the shelter space.
9. The blade according to claim 8, wherein the pushing-out portion is recessed in a partial arc shape in a plan view and preferentially biases opposite side edges of the cut and raised piece.
10. The blade according to claim 8, further comprising:
a protrusion for pressing a base end portion of the cut and raised piece prior to the pressing by the pushing-out portion.
11. The blade according to claim 8, wherein the core comprises a resin, the outer covering comprises a sheet metal and covering a resin, the outer covering comprises a sheet metal and covering an outside of the core, and the pushing-out portion is formed by the core.
12. The blade according to claim 1, further comprising:
a resin contact portion provided to the tip end upper edges of the outer covering and coming in contact with the cut and raised piece before the tip end upper edges.
13. A binding device, comprising:
the blade according to claim 1, including the core, the outer covering, the cutting edge, the curved portion, the liner portions, the blade tip end portion, and the adjacent portion.
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 method, comprising:
providing a filter and an adaptive control element that is operable to communicate with the filter, the adaptive control element configured to control an equalizer;
measuring, over a period, a data correlation matrix and an uncompensated error correlation vector using first and second low pass filters; and
implementing a data-pattern compensation matrix online to control the equalizer, whereby the data-pattern compensation matrix is obtained online dynamically from the data correlation matrix, wherein if the data correlation matrix is not invertible, an adaptive control is skipped, and then a next measurement is taken.
2. The method of claim 1, wherein the low pass filters measure correlation of a data sequence such that the measured correlation is compensated for.
3. The method of claim 1, wherein the filter further includes a linear combiner, a filter bank, a filter input, and recovered data.
4. The method of claim 1, wherein after the period ends, the data-pattern compensation matrix is calculated as the inverse of the data correlation matrix and multiplied with the uncompensated error correlation vector to yield a compensated error correlation vector.
5. The method of claim 4, wherein the compensated error correlation vector is multiplied with an adaptation matrix and a loop constant and then integrated to generate tap weights.
6. The method of claim 1, wherein the method is used with a general Zero Forcing (\u201cZF\u201d) adaptation scheme using a constant adaptation matrix.
7. The method of claim 1, wherein the method is used with a fast steepest-descent method using a variable adaptation matrix.
8. The method of claim 1, wherein a compensated error correlation vector is the same as the uncompensated error correlation vector for uncorrelated sequences.
9. The method of claim 1, wherein the measurement of the data correlation matrix and the error correlation vector are done simultaneously such that dynamic changes in data correlation are tracked.
10. A non-transitory computer-readable medium embedded with logic and operable to:
provide a filter and an adaptive control element that is operable to communicate with the filter;
measure, over a period, a data correlation matrix and an uncompensated error correlation vector using first and second low pass filters; and
implement a data-pattern compensation matrix online, whereby the data-pattern compensation matrix is obtained online dynamically from the data correlation matrix, wherein if the data correlation matrix is not invertible, an adaptive control is skipped, and then a next measurement is taken.
11. The non-transitory computer-readable medium of claim 10, wherein the low pass filters measure correlation of a data sequence such that the measured correlation is compensated for.
12. The non-transitory computer-readable medium of claim 10, wherein after the period ends, the data-pattern compensation matrix is calculated as the inverse of the data correlation matrix and multiplied with the uncompensated error correlation vector to yield a compensated error correlation vector.
13. The non-transitory computer-readable medium of claim 12, wherein the compensated error correlation vector is multiplied with an adaptation matrix and a loop constant and then integrated to generate tap weights.
14. The non-transitory computer-readable medium of claim 10, wherein the method is used with a general Zero Forcing (\u201cZF\u201d) adaptation scheme using a constant adaptation matrix.
15. The non-transitory computer-readable medium of claim 10, wherein a compensated error correlation vector is the same as the uncompensated error correlation vector for uncorrelated sequences.
16. A system, comprising:
an equalizer;
a filter; and
an adaptive control element that is operable to communicate with the filter to control the equalizer, wherein over a period, a data correlation matrix and an uncompensated error correlation vector are measured using first and second low pass filters, whereby a data-pattern compensation matrix is processed online, the data-pattern compensation matrix being obtained online dynamically from the data correlation matrix, wherein if the data correlation matrix is not invertible, an adaptive control is skipped, and then a next measurement is taken.
17. The system of claim 16, wherein the low pass filters measure correlation of a data sequence such that the measured correlation is compensated for.
18. The system of claim 16, wherein the filter further includes a linear combiner, a filter bank, a filter input, and recovered data.
19. The system of claim 16, wherein after the period ends, the data-pattern compensation matrix is calculated as the inverse of the data correlation matrix and multiplied with the uncompensated error correlation vector to yield a compensated error correlation vector.
20. The system of claim 19, wherein the compensated error correlation vector is multiplied with an adaptation matrix and a loop constant and then integrated to generate tap weights.
21. The system of claim 16, wherein the method is used with a general Zero Forcing (\u201cZF\u201d) adaptation scheme using a constant adaptation matrix.
22. The system of claim 16, wherein the method is used with a fast steepest-descent method using a variable adaptation matrix.
23. The system of claim 16, wherein a compensated error correlation vector is the same as the uncompensated error correlation vector for uncorrelated sequences.