IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0118757
(2002-04-08)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
5 인용 특허 :
8 |
초록
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A decorative pillow with all the individual proportions of the flower represented by the pillow. Each pillow consists of a center (a), individual petals that are fashioned in the shape of the petals of the flower being duplicated (b), leaves which correspond with each flower (c), a potpourri pouch (
A decorative pillow with all the individual proportions of the flower represented by the pillow. Each pillow consists of a center (a), individual petals that are fashioned in the shape of the petals of the flower being duplicated (b), leaves which correspond with each flower (c), a potpourri pouch (d), in which to add potpourri, and a bottom (e).
대표청구항
▼
A decorative pillow with all the individual proportions of the flower represented by the pillow. Each pillow consists of a center (a), individual petals that are fashioned in the shape of the petals of the flower being duplicated (b), leaves which correspond with each flower (c), a potpourri pouch (
A decorative pillow with all the individual proportions of the flower represented by the pillow. Each pillow consists of a center (a), individual petals that are fashioned in the shape of the petals of the flower being duplicated (b), leaves which correspond with each flower (c), a potpourri pouch (d), in which to add potpourri, and a bottom (e). ng together the outputs of said first memory means, said first multiplier means and said second multiplier means to produce an output representing the approximate value of F(x) at the value of x of interest. 2. An apparatus according to claim 1, wherein said first and second multiplier means operate substantially simultaneously in use. 3. An apparatus according to claim 1, wherein the logarithmic function has the form F(x)=log2(1+2x). 4. An apparatus according to claim 1, wherein the adder means is a carry-save-add means cooperating with at least one carry-propagate add means. 5. An apparatus according to claim 1, wherein said first, second, third and fourth memory means are accessed substantially simultaneously in use. 6. An apparatus according to claim 1, wherein the logarithmic function has the form F(x)=log2(1-2x). 7. An apparatus according to claim 1, wherein the logarithmic function has the form F(x)=ln(1+ex). 8. An apparatus according to claim 1, wherein the logarithmic function has the form F(x)=loga(B+Ckx), where a, B, C, and k are constants. 9. A microprocessor including a logarithmic calculating apparatus comprising: first memory means for storing values of the function F(x) for a plurality of discrete values of x; second memory means for storing values of F'(x), the slope of the function F(x), for said plurality of discrete values of x; first multiplier means, for multiplying the value of F'(x) for a said discrete value of x adjacent to the value of x of interest by δ, the difference between said adjacent discrete value of x and the value of x of interest; third memory means for storing values of E(x), the approximate difference between {F(x)+Δ·F'(x)} and F(x+Δ) where x and x+Δ are the adjacent pair of said discrete values of x nearest to the value of x of interest; fourth memory means for storing values of P(δ), the ratio of (i) the difference between F(x+δ) and {F(x)+δ·F'(x)}, to (ii) E(x) for a plurality of values of δ; second multiplier means, for multiplying together the outputs of said third and fourth memory means; and adder means for adding together the outputs of said first memory means, said first multiplier means and said second multiplier means to produce an output representing the approximate value of F(x) at the value of x of interest. 10. A method of determining the approximate value of a logarithmic function F(x) at a value of x of interest in a logarithmic calculating apparatus, the method comprising the steps of: storing values of the function F(x) for a plurality of discrete values of x; storing values of F'(x), the slope of the function F(x), for said plurality of discrete values of x; multiplying the value of F'(x) for a said discrete value of x adjacent to the value of x of interest by δ, the difference between said adjacent discrete value of x and the value of x of interest; storing values of E(x), the approximate difference between {F(x)+Δ·F'(x) } and F(x+Δ) where x and x+Δ are the adjacent pair of said discrete values of x nearest to the value of x of interest; storing values of P(δ), the ratio of (i) the difference between {F(x)+δ·F'(x)} and F(x+δ), to (ii) E(x) for a plurality of values of δ; multiplying together the values of E(x) and P(δ) for the value of x of interest; and adding together said values of F(x), δ·F'(x) and E(x)·P(δ) to provide the approximate value of F(x) for the value of x of interest. 11. A method according to claim 10, wherein the logarithmic function has the form F(x)=log2(1+2x). 12. A method according to claim 10, wherein said multiplication steps are carried out substantially simultaneously. 13. A method according to claim 10, wherein said addition step is carried out by means of a carry-save add stage cooperating with a subsequent carry-propagate-add stage. 14. A method according to claim 10, wherein the stored values
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