US3715510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for handling data from a plurality of channels
Assignee: Computer Instruments Corp
•
Filing: 1970-09-25
•
Granted: 1973-02-06
•
Expires: 1990-09-25
Abstract
Abstract A time-multiplexing system wherein a frequency-modulated signal contains the data from a plurality of channels in time-sequential order. Each channel is represented by the same integral number of periods of a sample of the signal therein. Upon reception of this signal, it is converted back to individual channels of data by controlled integration of a constant signal in accordance with the duration of the period of the signals in each sample.
Inventors
- 👤 B Birnbaum
- 👤 D Spier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:58
CPC Classifications
H; H04; H04L; H04L5/00; H04L5/22; H04L5/26; H04J; H04J4/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
85 words
A method of transmitting and receiving analog data from a plurality of channels, comprising converting the analog data in each channel to a frequency-modulated signal wherein the frequency represents the amplitude of said analog data, sequentially transmitting a predetermined number of cycles of the frequency-modulated signal from each of said channels, detecting the period of at least one of said sampled cycles from each channel and producing discrete signals for each channel having an amplitude commensurate with the period of each of said detected cycles.
Claim 2
Independent Claim
85 words
A method of transmitting and receiving analog data from a plurality of channels, comprising converting the analog data in each channel to a frequency-modulated signal wherein the frequency represents the amplitude of said analog data, sequentially transmitting a predetermined number of cycles of the frequency-modulated signal from each of said channels, detecting the period of at least one of said sampled cycles from each channel and producing discrete signals for each channel having an amplitude commensurate with the period of each of said detected cycles.
Claim 3
Independent Claim
85 words
A method of transmitting and receiving analog data from a plurality of channels, comprising converting the analog data in each channel to a frequency-modulated signal wherein the frequency represents the amplitude of said analog data, sequentially transmitting a predetermined number of cycles of the frequency-modulated signal from each of said channels, detecting the period of at least one of said sampled cycles from each channel and producing discrete signals for each channel having an amplitude commensurate with the period of each of said detected cycles.
Claim 4
Independent Claim
85 words
A method of transmitting and receiving analog data from a plurality of channels, comprising converting the analog data in each channel to a frequency-modulated signal wherein the frequency represents the amplitude of said analog data, sequentially transmitting a predetermined number of cycles of the frequency-modulated signal from each of said channels, detecting the period of at least one of said sampled cycles from each channel and producing discrete signals for each channel having an amplitude commensurate with the period of each of said detected cycles.
Claim 5
Dependent Claim
48 words
A method of transmitting and receiving analog data from a plurality of channels according to claim 1, wherein said detecting comprises conversion of each said sampled cycles of frequency-modulated signals to a substantially rectangular waveform, and integrating a known signal over a predetermined portion of said rectangular waveform.
Claim 6
Dependent Claim
49 words
A method of transmitting and receiving analog data from a plurality of channels according to claim 2, including counting said sampled cycles and selectively integrating said known signals, over a predetermined portion of a particular cycle of each sampled group under control of the numbers registered during said counting.
Claim 7
Dependent Claim
35 words
A method of transmitting and receiving a plurality of channels of analog data according to claim 1, including producing a discrete signal and transmitting it at the end of each complete sequence of sampled cycles.
Claim 8
Dependent Claim
138 words
Apparatus for producing a frequency-modulated signal representing signals from a plurality of channels, comprising counting means responsive to triggering pulses to successively register digits in ascending order, a gate for each of said channels having the signal from the associated channel supplied as an input thereto, a decoder for each of said channels and operative in accordance with the digits registered in said counting means to enable selected ones of said gates, modulating means connected to the output of said gates and operative to produce a frequency-modulated signal having a frequency determined by the magnitude of the output from said gates, and means for applying a triggering pulse to said counting means for each period of said frequency-modulated signal, whereby the output of said modulating means sequentially comprises an integral number of periods representing each of said channels.
Claim 9
Dependent Claim
138 words
Apparatus for producing a frequency-modulated signal representing signals from a plurality of channels, comprising counting means responsive to triggering pulses to successively register digits in ascending order, a gate for each of said channels having the signal from the associated channel supplied as an input thereto, a decoder for each of said channels and operative in accordance with the digits registered in said counting means to enable selected ones of said gates, modulating means connected to the output of said gates and operative to produce a frequency-modulated signal having a frequency determined by the magnitude of the output from said gates, and means for applying a triggering pulse to said counting means for each period of said frequency-modulated signal, whereby the output of said modulating means sequentially comprises an integral number of periods representing each of said channels.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-02-06 | 1976-08-07 | 1977-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-06 | 1980-08-07 | 1981-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-06 | 1984-08-07 | 1985-02-06 | $7700.00 | Window Closed / Lapsed |