US4117347A
Expired / Lapsed
US
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Charged splitting method using charge transfer device
Assignee: HP Inc
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Filing: 1977-09-15
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Granted: 1978-09-26
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Expires: 1997-09-15
Abstract
Abstract A charge-splitting device and method include a plurality of charge cells coupled to receive a charge in response to being simultaneously clocked into a charge receiving state by an applied clock signal. The received charge is split into predetermined charge portions among the plurality of charge cells in proportions dependent upon the total number of cells, their relative capacitance and the magnitude and timing of the applied clock signal. The charge portions are again split and selectively summed to obtain highly accurate charge splitting ratios.
Inventors
- 👤 Thomas Hornak
- 👤 Richard C. Lucas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:00
CPC Classifications
G; G11; G11C; G11C27/00; G11C27/04; G11C19/00; G11C19/28; G11C19/282
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
130 words
A method for splitting charge comprising the steps of: splitting a quantity of charge Q into a charge portion pQ and a charge portion rQ, p being 1/2 (1-ε), r being 1/2 (1+ε), by a charge splitting means having a splitting error of ε, ε being a fraction less than one; splitting the charge portion pQ into a charge portion p 2 Q and a charge portion rpQ by said charge splitting means; splitting the charge portion rQ into a charge portion r 2 Q and a charge portion prQ by said charge splitting means; combining the charge portions p 2 Q and r 2 Q; and applying the combined charge portions p 2 Q and r 2 Q as an output representative of one-half the value of charge Q.
Claim 2
Independent Claim
130 words
A method for splitting charge comprising the steps of: splitting a quantity of charge Q into a charge portion pQ and a charge portion rQ, p being 1/2 (1-ε), r being 1/2 (1+ε), by a charge splitting means having a splitting error of ε, ε being a fraction less than one; splitting the charge portion pQ into a charge portion p 2 Q and a charge portion rpQ by said charge splitting means; splitting the charge portion rQ into a charge portion r 2 Q and a charge portion prQ by said charge splitting means; combining the charge portions p 2 Q and r 2 Q; and applying the combined charge portions p 2 Q and r 2 Q as an output representative of one-half the value of charge Q.
Claim 3
Independent Claim
65 words
A method for splitting charge comprising the steps of: splitting a quantity of charge Q into a first plurality of first charge portions; splitting the first plurality of first charge portions into a second plurality of second charge portions; combining a plurality of the second plurality of second charge portions to form a combined charge portion; and applying the combined charge portion as an output.
Claim 4
Independent Claim
65 words
A method for splitting charge comprising the steps of: splitting a quantity of charge Q into a first plurality of first charge portions; splitting the first plurality of first charge portions into a second plurality of second charge portions; combining a plurality of the second plurality of second charge portions to form a combined charge portion; and applying the combined charge portion as an output.
Claim 5
Dependent Claim
28 words
A method as in claim 2 wherein each of the first plurality of first charge portions is substantially equal to the same nominal fractional portion of charge Q.
Claim 6
Dependent Claim
28 words
A method as in claim 2 wherein each of the second plurality of second charge portions is substantially equal to the same nominal fractional portion of charge Q.
Claim 7
Dependent Claim
21 words
A method as in claim 2 wherein the first and second charge portions are each split by a selected splitting cell.
Claim 8
Independent Claim
130 words
A method for splitting charge comprising the steps of: applying a quantity of charge Q to a charge splitting cell; splitting the charge Q by means of said charge splitting cell into two charge portions pQ and rQ, p and r being splitting coefficients where p = 1/2 (1-ε) and r = 1/2 (1+ ε), ε being a number representing error of said charge splitting cell; splitting the charge portion pQ by means of said charge splitting cell into charge portions p 2 Q and prQ; splitting charge portion rQ by means of said charge splitting cell into charge portions r 2 Q and rpQ; and combining charge portions p 2 Q and r 2 Q to form a quantity of charge representative of one-half the quantity of charge Q.
Claim 9
Independent Claim
130 words
A method for splitting charge comprising the steps of: applying a quantity of charge Q to a charge splitting cell; splitting the charge Q by means of said charge splitting cell into two charge portions pQ and rQ, p and r being splitting coefficients where p = 1/2 (1-ε) and r = 1/2 (1+ ε), ε being a number representing error of said charge splitting cell; splitting the charge portion pQ by means of said charge splitting cell into charge portions p 2 Q and prQ; splitting charge portion rQ by means of said charge splitting cell into charge portions r 2 Q and rpQ; and combining charge portions p 2 Q and r 2 Q to form a quantity of charge representative of one-half the quantity of charge Q.
Claim 10
Dependent Claim
36 words
A method as in claim 6 comprising the additional steps after splitting charge Q of: removing charge portions pQ and rQ from said splitting cell; storing the charge portion pQ; and storing the charge portion rQ.
Claim 11
Dependent Claim
47 words
A method as in claim 6 wherein the step of splitting the charge portion pQ comprises the steps of: applying charge portion pQ to said charge splitting cell; and splitting the charge portion pQ by said charge splitting cell into charge portions p 2 Q and prQ.
Claim 12
Dependent Claim
37 words
A method as in claim 8 comprising the additional steps after splitting charge portion pQ of: removing the charge portions p 2 Q and prQ from said splitting cell; and storing the charge portion p 2 Q.
Claim 13
Dependent Claim
47 words
A method as in claim 9 wherein the step of splitting the charge portion rQ comprises the steps of: applying charge portion rQ to said charge splitting cell; and splitting the charge portion rQ by said charge splitting cell into charge portions r 2 Q and rpQ.
Claim 14
Dependent Claim
38 words
A method as in claim 10 comprising the additional steps after splitting charge portion rQ of: removing the charge portions r 2 Q and rpQ from said charge splitting cell; and storing the charge portion r 2 Q.
Claim 15
Dependent Claim
57 words
A method as in claim 11 wherein the step of combining charge portions p 2 Q and r 2 Q comprises the steps of: applying the charge portions p 2 Q and r 2 Q to a charge summing cell; and combining the charge portions p 2 Q and r 2 Q in the charge summing cell.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |