US3847349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Interpolators
Assignee: ELECTRONIC MUSIC STUDIOS LONDO
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Filing: 1973-12-21
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Granted: 1974-11-12
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Expires: 1993-12-21
Abstract
Abstract An interpolating arrangement comprises a stepper controlled to step between two computer-defined values at instants in dependence upon the difference between the values and the real time interval between the occurrence of the values. Preferably the stepper control which depends upon the real time interval is such that the stepper can step linearly between the values when the real time interval is expressed by ST in the floating-point format expression K.2(ST-1), where the expression is equal to the actual realtime interval between the occurrence of the values.
Inventors
- 👤 P Eastty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:11
CPC Classifications
G; G06; G06F; G06F17/00; G06F17/10; G06F17/17
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
138 words
An interpolating arrangement comprisiNg: stepping means for interpolating in small steps from an initial value, said stepping means having a control input for receiving signals to initiate respective ones of said small steps; comparison means having first input means available to receive a reference value dependent upon a predefined real-time duration of an interpolating operation from said initial value to a further value, second input means and an output for transmitting for said stepping means a possibly step-initiating signal when said comparison means senses a predetermined relationship between the values of signals at said first input means and said second input means of said comparison means; and signal generator means connected to said second input means of said comparison means and being operable to generate a succession of values repeatedly during said predefined duration of said interpolating operation.
Claim 2
Dependent Claim
138 words
An interpolating arrangement comprisiNg: stepping means for interpolating in small steps from an initial value, said stepping means having a control input for receiving signals to initiate respective ones of said small steps; comparison means having first input means available to receive a reference value dependent upon a predefined real-time duration of an interpolating operation from said initial value to a further value, second input means and an output for transmitting for said stepping means a possibly step-initiating signal when said comparison means senses a predetermined relationship between the values of signals at said first input means and said second input means of said comparison means; and signal generator means connected to said second input means of said comparison means and being operable to generate a succession of values repeatedly during said predefined duration of said interpolating operation.
Claim 3
Dependent Claim
46 words
An interpolating arrangement as claimed in claim 1, wherein said signal generator means is adapted so that said values in said succession are such that said comparison means will transmit possibly step initiating signals, if at all, at equal intervals of time whatever said reference value.
Claim 4
Dependent Claim
91 words
An interpolating arrangement as claimed in claim 2, wherein said comparison means is adapted to receive said reference value in the form of a parameter in a predetermined function representing said predetermined duration of said interpolating operation and said signal generator means is adapted so that said values in said succession are such that the frequency of said possibly step-initiating signals transmitted by said comparison means will be inversely proportional to said predetermined duration of said interpolating operation when said reference value is received by said comparison means as said parameter.
Claim 5
Dependent Claim
90 words
An interpolating arrangement as claimed in claim 3, wherein: said comparison means is adapted to receive said reference value at a parameter ST in a function K.2(ST 1) representing said predefined duration of said interpolating operation; said signal generator is such that said values in said succession will represent the number of the most significant digit which was last to change in a binary digital count performed and sampled in said signal generator means; and said predetermined relationship being that the individual value in said succession > or = ST.
Claim 6
Dependent Claim
54 words
An interpolating arrangement as claimed in claim 4, wherein said signal generator means comprises four counting elements, one per digit, such that the maximum possible value of said number is fifteen, and said first input means has a three bit input for receiving ST so that the maximum possible value of ST is seven.
Claim 7
Dependent Claim
85 words
An interpolating arrangement as claimed in claim 1, and comprising logic circuit means coupled to said control input of said stepping means and to said comparison means, there being a further signal generator, also coupled to said logic circuit means, for generating pulses in dependence upon the difference between said initial value and said further value so that said stepping means can receive signals at said control input from said logic means at instants depending upon both said comparison means and said further signal generator.
Claim 8
Dependent Claim
68 words
An interpolating arrangement as claimed in claim 6, wherein said logic circuit means comprises an AND gate and said further signal generator comprises a random numbers generator, said further signal generator being adapted to emit a pulse to said AND gate whenever said difference between said initial value and said further value is greater than the random number generated at a particular instant in said random numbers generator.
Claim 9
Dependent Claim
26 words
An interpolating arrangement as claimed in claim 7, wherein said random numbers generator is adapted to perform a reverse digital count to provide said random numbers.
Claim 10
Dependent Claim
36 words
An interpolating arrangement as claimed in claim 1, and comprising inhibiting means for inhibiting the supply of signals to said control input of said stepping means when an interpolated value becomes equal to said further value.
Claim 11
Dependent Claim
38 words
An interpolating arrangement as claimed in claim 1, wherein said stepping means comprises adding means arranged to change an interpolated value by a constant step amount each time said stepping means receives a signal at said control input.
Claim 12
Dependent Claim
40 words
An interpolating arrangement as claimed in claim 1, and comprising a by-pass path which can be used to by-pass said stepping means for changing the output signal of said interpolating arrangement directly from said initial value to said further value.
Claim 13
Dependent Claim
41 words
An interpolating arrangement as claimed in claim 1, and comprising means for changing an interpolated value directly to a new further value at an instant at which said interpolating arrangement is performing interpolations from said initial value to said further value.
Claim 14
Dependent Claim
42 words
An interpolating arrangement as claimed in claim 1, in combination with a computer programmed to provide said reference value dependent upon said predefined duration of an interpolation operation, and to provide the relative values of said initial value and said further value.
References Cited (Backward Citations)
US3349180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |