What is claimed is:
1. A polynomial coefficient generator, in an optical storage device for generating a plurality of output coefficients according to a plurality of input coefficients and a clock signal, comprising:
an input control device capable of sequentially outputting the input coefficients according to the clock signal; and
a plurality of computational circuits serially connected in serial stages and activated by the clock signal such that each computation circuit produces and stores a corresponding polynomial coefficient of the output coefficients, wherein each computational circuit comprises an adder input terminal, a multiplication input terminal and a computational output terminal, the adder input terminal of a computational circuit at the first stage, coupled to the output terminal of the input control device, each adder input terminal of the computational circuits at following stages coupled to the computational output terminal of the computational circuit at a previous stage, the multiplication input terminal of each computational circuit coupled to the output terminal of the input control device, and hence, when the input control device outputs the input coefficients according to the clock signal, each computational circuit multiplies the value presented to the multiplication input terminal with the stored corresponding polynomial coefficient of the output coefficients and output the resulting value to the output terminal of the computational circuit, then, each computational circuit adds the value presented to the adder input terminal with the stored corresponding polynomial coefficient of the output coefficients and renews the corresponding polynomial coefficient of the output coefficients by the resulting value.
2. The polynomial coefficient generator of claim 1, wherein the input control device comprises a rising edge triggered D-type flip-flop.
3. The polynomial coefficient generator of claim 1, wherein the computational circuit comprises:
an adder unit having a first input terminal, a second input terminal and an output terminal, wherein the adder unit adds the values presented to the first input terminal and the second input terminal so that a coefficient is generated and then output via the output terminal, and that the first input terminal of the adder unit is the adder input terminal of the computational circuit;
a multiplication unit having a first input terminal, a second input terminal and an output terminal, wherein the multiplication unit multiplies the values presented to the first input terminal and the second input terminal and the resulting product is output via the output terminal, and that the first input terminal of the multiplication unit is the multiplication input terminal of the computational circuit;
a storage unit having an input terminal and an output terminal, wherein the input terminal is coupled to the adder output terminal for inputting the computed coefficient from the adder unit and outputting the corresponding polynomial coefficient of the output coefficients through the output terminal, and the output terminal is coupled to the second input terminal of the adder unit and the second input terminal of the multiplication unit; and
a control device having an input terminal and an output terminal, wherein the input terminal is coupled to the output terminal of the multiplication unit so that value presented to the output terminal of the multiplication unit is forwarded to the output terminal according to the clock signal.
4. The polynomial coefficient generator of claim 3, wherein the multiplication unit comprises a rising edge triggered multiplication unit.
5. The polynomial coefficient generator of claim 3, wherein the control device comprises a high potential level triggered D-type flip-flop.
6. The polynomial coefficient generator of claim 3, wherein the adder unit comprises a falling edge triggered adder unit.
7. The polynomial coefficient generator of claim 3, wherein the storage unit comprises a low potential level triggered storage unit.
8. The polynomial coefficient generator of claim 1, further comprising a storage device coupled to the computational output terminal of the last computational circuit in the plurality of computational circuits for storing the highest degree coefficient.
9. A method for generating a plurality of output coefficients according to a plurality of input coefficients and a clock signal, the method used in an optical storage device, comprising the step of:
providing a plurality of computational circuits serially connected and activated by the clock signal such that each computation circuit produces and stores a corresponding polynomial coefficient of the output coefficients, wherein each computational circuit includes an adder input terminal, a multiplication input terminal and a computational output terminal, each adder input terminal of the computational circuits is coupled to the computational output terminal of the previous computational circuit;
outputting the input coefficients to the adder input terminal of the first computational circuit and the multiplication input terminal of each computational circuit sequentially according to the clock signal;
multiplying the value presented to the multiplication input terminal with the stored corresponding polynomial coefficient of the output coefficients and outputting the resulting value to the output terminal of the computational circuit; and
adding the value presented to the adder input terminal with the stored corresponding polynomial coefficient of the output coefficients and renewing the corresponding polynomial coefficient of the output coefficients by the resulting value.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. An apparatus for motorizing a wheelchair for movement on a surface,
comprising;
a. a guide;
b. mounting means for attaching said guide to the wheelchair said guide oriented by said attachment means to the wheelchair to include a vertical component;
c. a support, said support engaging said guide;
d. positioning means for urging movement of said support along said guide and along said vertically component of said track;
e. motive means for propelling the wheelchair; and
f. means for securing at least a portion of said motive means to said support for movement therewith along said guide.
2. The apparatus of claim 1 in which said motive means includes a wheel, said wheel being secured to said support, said positioning means being capable of placing said wheel in at least a first position in contact with the surface and a second position above the surface.
3. The apparatus of claim 2 in which said motive means further includes a motor, said motor linked to said wheel.
4. The apparatus of claim 3 in which said means for securing at least a portion of said motive means to said support further includes means for securing said motor to said support.
5. The apparatus of claim 1 in which said positioning means comprises a line connected to said support and a lever connected to said line to move said support along said guide.
6. The apparatus of claim 5 in which said support is a plate.
7. The apparatus of claim 1 in which said guide comprises a pair of tracks, said pair of tracks being spaced from one another, each of said pair of tracks being fastened to the frame of the wheel chair.
8. The apparatus of claim 7 in which said motive means includes a wheel, said wheel being secured to said support, said positioning means being capable of placing said wheel in at least a first position in contact with the surface and a second position above the surface.
9. The apparatus of claim 8 in which said motive means further includes a motor, said motor linked to said wheel.
10. The apparatus of claim 9 in which said means for securing at least a portion of said motive means to said support further includes means for securing said motor to said support.
11. The apparatus of claim 7 in which said positioning means comprises a line connected to said support and a lever connected to said line to move said support along said guide.
12. The apparatus of claim 8 in which said support is a plate.