US3699255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for measuring speed-error in a pulse train
Assignee: Susquehanna Corp
•
Filing: 1970-06-24
•
Granted: 1972-10-17
•
Expires: 1990-06-24
Abstract
Abstract A measurement of transmission speed-error can be obtained by utilizing the present inventive concepts with conventional pulse or telegraph distortion measuring apparatus. For each character in the pulse train fed to the apparatus, a period of time is established for making measurements. The transitions which occur during this time period are measured in the normal manner and displayed. The meter or other display apparatus is designed to divide the reading by an appropriate number in order to compensate for the cumulative effect of speed error, and an indication is also made as to whether the speed is faster or slower than normal.
Inventors
- 👤 Jacob L Wallace Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:37
CPC Classifications
H; H04; H04L; H04L1/00; H04L1/24; H04L1/248
Claims Analysis
Total Claims: 45
Claim 1
Independent Claim
144 words
A method for making measurements of speed-error in pulse train transmissions comprising: 1. establishing a period of time for measuring speed-error during which at least one pulse transition can be measured, including: a. initiating said period of time in response to an initially received pulse in the pulse train, and b. terminating said period of time after the passage of a preset interval subsequent to the initiation of said period of time, 2. comparing during the established time period the times of arrival of pulse transitions in the pulse train with the respective ideal times of arrival for such transitions, 3. displaying any difference in time between the receipt of any such transition and its respective ideal time of arrival as a measurement of transmission speed-error, and 4. indicating whether said error in transmission speed is fast or slow with respect to normal speed.
Claim 2
Independent Claim
144 words
A method for making measurements of speed-error in pulse train transmissions comprising: 1. establishing a period of time for measuring speed-error during which at least one pulse transition can be measured, including: a. initiating said period of time in response to an initially received pulse in the pulse train, and b. terminating said period of time after the passage of a preset interval subsequent to the initiation of said period of time, 2. comparing during the established time period the times of arrival of pulse transitions in the pulse train with the respective ideal times of arrival for such transitions, 3. displaying any difference in time between the receipt of any such transition and its respective ideal time of arrival as a measurement of transmission speed-error, and 4. indicating whether said error in transmission speed is fast or slow with respect to normal speed.
Claim 3
Dependent Claim
27 words
comparing during the established time period the times of arrival of pulse transitions in the pulse train with the respective ideal times of arrival for such transitions,
Claim 4
Dependent Claim
27 words
comparing during the established time period the times of arrival of pulse transitions in the pulse train with the respective ideal times of arrival for such transitions,
Claim 5
Dependent Claim
26 words
A method as claimed in claim 1 in which said period of time is established for comparing more than the time of arrival of one transition.
Claim 6
Dependent Claim
35 words
providing a scale on said meter graduated to divide the measurement by the maximum number of transitions, other than the first transition, which can be contained in the pulse train during said period of time.
Claim 7
Dependent Claim
35 words
providing a scale on said meter graduated to divide the measurement by the maximum number of transitions, other than the first transition, which can be contained in the pulse train during said period of time.
Claim 8
Dependent Claim
34 words
means for effecting measurements during said period of time including means for receiving transitions in the pulse trains and comparing the times of arrival of such transitions with their respective ideal times of arrival,
Claim 9
Dependent Claim
34 words
means for effecting measurements during said period of time including means for receiving transitions in the pulse trains and comparing the times of arrival of such transitions with their respective ideal times of arrival,
Claim 10
Dependent Claim
13 words
a flip-flop for controlling said gate and thereby the passage of said transitions.
Claim 11
Dependent Claim
13 words
a flip-flop for controlling said gate and thereby the passage of said transitions.
Claim 12
Dependent Claim
3 words
a counter, and
Claim 13
Dependent Claim
3 words
a counter, and
Claim 14
Dependent Claim
20 words
means for setting said flip-flop in response to said counter attaining a first predetermined level, and said terminating means includes:
Claim 15
Dependent Claim
20 words
means for setting said flip-flop in response to said counter attaining a first predetermined level, and said terminating means includes:
Claim 16
Dependent Claim
5 words
a face for said meter,
Claim 17
Dependent Claim
5 words
a face for said meter,
Claim 18
Dependent Claim
15 words
said face being graduated to display said measurements as a fraction of their measured value.
Claim 19
Dependent Claim
15 words
said face being graduated to display said measurements as a fraction of their measured value.
Claim 20
Dependent Claim
15 words
means for clearing said flip-flop in response to said counter attaining a second predetermined level.
Claim 21
Dependent Claim
15 words
means for clearing said flip-flop in response to said counter attaining a second predetermined level.
Claim 22
Dependent Claim
14 words
means for clearing said flip-flop in response to said counter attaining a predetermined level.
Claim 23
Dependent Claim
14 words
means for clearing said flip-flop in response to said counter attaining a predetermined level.
Claim 24
Dependent Claim
12 words
means for displaying said measurements as a fraction of their value, and
Claim 25
Dependent Claim
12 words
means for displaying said measurements as a fraction of their value, and
Claim 26
Dependent Claim
21 words
A method as claimed in claim 2 wherein said period of time is initiated upon receipt of said initially received pulse.
Claim 27
Dependent Claim
26 words
displaying any difference in time between the receipt of any such transition and its respective ideal time of arrival as a measurement of transmission speed-error, and
Claim 28
Dependent Claim
26 words
displaying any difference in time between the receipt of any such transition and its respective ideal time of arrival as a measurement of transmission speed-error, and
Claim 29
Dependent Claim
16 words
indicating whether said error in transmission speed is fast or slow with respect to normal speed.
Claim 30
Dependent Claim
16 words
indicating whether said error in transmission speed is fast or slow with respect to normal speed.
Claim 31
Dependent Claim
26 words
A method as claimed in claim 3 further comprising the step of inhibiting the first transition received during said period of time from said comparison step.
Claim 32
Dependent Claim
22 words
means responsive to the receipt of said transitions for indicating whether the displayed measurements are faster or slower than the normal speed.
Claim 33
Dependent Claim
22 words
means responsive to the receipt of said transitions for indicating whether the displayed measurements are faster or slower than the normal speed.
Claim 34
Dependent Claim
12 words
A method as claimed in claim 4 further comprising the steps of:
Claim 35
Dependent Claim
46 words
A method as claimed in claim 4 wherein the pulse train transmissions are grouped into characters and said period of time is initiated upon receipt of the first transition of each character in the pulse train and is terminated prior to the end of said character.
Claim 36
Dependent Claim
26 words
A method as claimed in claim 1 wherein said period of time is initiated at a preset time subsequent to receipt of said initially received pulse.
Claim 37
Dependent Claim
27 words
A method as claimed in claim 7 in which said period of time is established for comparing no more than the time of arrival of one transition.
Claim 38
Dependent Claim
32 words
A method as claimed in claim 8 in which said displaying step includes dividing any measurement of time difference by the numerical position of said transition with reference to a start transition.
Claim 39
Dependent Claim
13 words
Apparatus for measuring errors in the speed of transmission of pulse trains comprising:
Claim 40
Dependent Claim
13 words
Apparatus for measuring errors in the speed of transmission of pulse trains comprising:
Claim 41
Dependent Claim
12 words
Apparatus as claimed in claim 10 in which said establishing means comprises:
Claim 42
Dependent Claim
12 words
Apparatus as claimed in claim 11 in which said initiating means includes:
Claim 43
Dependent Claim
13 words
Apparatus as claimed in claim 11 in which said establishing means further includes:
Claim 44
Dependent Claim
36 words
Apparatus as claimed in claim 10 further comprising means responsive to said initially received pulse in a pulse train for generating signals corresponding to the ideal times of arrival for the transitions in such pulse train.
Claim 45
Dependent Claim
12 words
Apparatus as claimed in claim 14 in which said displaying means comprises:
References Cited (Backward Citations)
US2732441A
Cited
US2435258A
Cited
US2857484A
Cited
US3136900A
Cited
US3243526A
Cited
US3189733A
Cited
US3420950A
Cited
US3585508A
Cited
US3599014A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-17 | 1976-04-17 | 1976-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-17 | 1980-04-17 | 1980-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-17 | 1984-04-17 | 1984-10-17 | $7700.00 | Window Closed / Lapsed |