US4528884A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wave reading apparatus
Assignee: Panasonic Holdings Corp
•
Filing: 1983-07-19
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Granted: 1985-07-16
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Expires: 2003-07-19
Abstract
Abstract A wave reading apparatus includes a wave generator for generating a plurality of wave signals, a read-out frequency generator for generating a plurality of read-out frequencies, a controller for controlling calculation, writing and reading of wave samples, a writing device, a plurality of buffer memories and a plurality of read-out devices. The controller informs requests of wave samples calculation to the wave generator in accordance with the read-out frequencies. The calculated wave samples are written through the writing device to the buffer memories and read out by the read-out device in accordance with the read-out frequencies, at least one of which is different in frequency from the remainder.
Inventors
- 👤 Kinji Kawamoto
- 👤 Kazuhiro Murase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:41
CPC Classifications
G; G10; G10H; G10H7/00; G10H7/02; G10H7/04; G10H7/045
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
136 words
A wave reading apparatus comprising: a wave generator for generating a plurality of wave samples one of which representing a different note from that of the remainder of said samples; a read-out frequency generator for generating a plurality of read-out frequencies at the same time; a controller for controlling calculation and writing, said controller informing requests of wave samples to said wave generator in accordance with said read-out frequencies; a plurality of buffer memories for storing said wave samples, one of said buffer memories storing wave samples of a different note from that of the remainder of said samples; a writing device for writing said wave samples into said plurality of buffer memories; and a plurality of read-out devices for reading out said wave samples from said buffer memories in response to said plurality read-out frequencies.
Claim 2
Dependent Claim
136 words
A wave reading apparatus comprising: a wave generator for generating a plurality of wave samples one of which representing a different note from that of the remainder of said samples; a read-out frequency generator for generating a plurality of read-out frequencies at the same time; a controller for controlling calculation and writing, said controller informing requests of wave samples to said wave generator in accordance with said read-out frequencies; a plurality of buffer memories for storing said wave samples, one of said buffer memories storing wave samples of a different note from that of the remainder of said samples; a writing device for writing said wave samples into said plurality of buffer memories; and a plurality of read-out devices for reading out said wave samples from said buffer memories in response to said plurality read-out frequencies.
Claim 3
Dependent Claim
22 words
A wave reading apparatus as claimed in claim 1, wherein said writing device provides said wave signals to said buffer memories serially.
Claim 4
Dependent Claim
24 words
A wave reading apparatus as claimed in claim 1, wherein said reading device parallelly reads out said wave signals stored in said buffer memories.
Claim 5
Dependent Claim
29 words
A wave reading apparatus as claimed in claim 1, wherein said wave generator operates in time division multiplexed mode and generates wave samples in a predetermined calculation time slot.
Claim 6
Dependent Claim
61 words
A wave reading apparatus as claimed in claim 1, wherein said controller has a plurality of calculation request flag registors which are set by the requests of wave samples in response to said read-out frequencies, inform occurrence of said requests of wave samples generation to said wave generator, and are reset by writing of said wave samples into said buffer memories.
Claim 7
Dependent Claim
36 words
A wave reading apparatus as claimed in claim 1, wherein said wave samples generated by said wave generator are written in said buffer memories as analog signals and said read-out devices read out said analog signals.
Claim 8
Dependent Claim
38 words
A wave reading apparatus as claimed in claim 1, wherein said wave generator generates said wave samples as differential form of data and said wave samples read out from said read-out devices are accumulated by an integrating circuit.
Claim 9
Dependent Claim
104 words
A wave reading apparatus as claimed in claim 1, wherein: said wave generator has a wave signal generator and an envelope generator; said writing device has a digital-to-analog converter and a multiplying digital-to-analog converter, one of output signals of said wave signal generator and said envelope generator being applied to said digital-to-analog converter and the other of said output signals to said multiplying digital-to-analog converter, an output signal of said digital-to-analog converter being applied to said multiplying digital-to-analog converter and multiplied with said the other of said output signals, and an output signal of said multiplying digital-to-analog converter being stored in said buffer memories.
Claim 10
Dependent Claim
36 words
A wave reading apparatus as claimed in claim 1, wherein said writing deive is a digital-to-analog converter for sequentially providing said wave samples from said wave generator to said buffer memories in an analog signal form.
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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) | 1988-07-15 | 1989-01-14 | 1989-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-15 | 1993-01-14 | 1993-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-15 | 1997-01-14 | 1997-07-16 | $7700.00 | Window Closed / Lapsed |