Patent US3792541A successfully refreshed from Google Patents.
US3792541A
Expired / Lapsed
US
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Electronic perpetual calendar
Assignee: Individual
•
Filing: 1972-10-16
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Granted: 1974-02-19
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Expires: 1992-10-16
Abstract
Abstract A compact electronic perpetual calendar, capable of displaying any given monthly or yearly calendar period for any year from 0 to 9,999 in either the Julian or the Gregorian calendar, is disclosed. The apparatus includes a presettable calendar period selector circuit, and a display system control circuit utilizing the logic outputs of the selector circuit for correspondingly activating the display system. The selector circuit may utilize ''''read only'''' memories, AND gate matrices, calculator circuitry, or the like to provide the desired logic outputs. This abstract is not to be taken either as a complete exposition or as a limitation of the present invention, however, the full nature and extent of the invention being discernible only by reference to and from the entire disclosure.
Inventors
- 👤 R Engle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:21
CPC Classifications
G; G09; G09D; G09D3/00; G09D3/12
Claims Analysis
Total Claims: 44
Claim 1
Independent Claim
329 words
An electronic perpetual calendar capable of displaying at least selected yearly or monthly calendar periods for any year in a given span of years falling between the year 0 and the year 9,999 in either the Gregorian or the Julian calendar, comprising: A. a calendar period display system, including 1. means for providing a visual display of each of a plurality of calendar periods representing at least the seven possible types of regular years, the seven possible types of leap years, the seven possible types of 31-day months, the seven possible types of 30-day months, the seven possible types of 29-day months, and the seven possible types of 28-day months, and 2. means for activating said display means; B. a calendar period selector circuit, including 1. signal generating means for providing electronic input signals corresponding at least to the available span of year numbers and the twelve months of the year, 2. selector switch means settable to respective control positions to provide for the derivation, from said signal generating means, of specific input signals corresponding, for either type of calendar, to the number of the year desired or to the name of the month plus the number of the year desired, and 3. first logic circuit means responsive to said specific input signals for providing corresponding first output signals; and C. a calendar period display system control circuit, including 1. second logic circuit means responsive to said first output signals for providing corresponding second output signals representative of the desired calendar period display and to be applied to said activating means, and 2. operator switch means for enabling said control circuit and said selector circuit, (a) so as to effect the generation of said specific input signals and the resultant first and second output signals and (b) so as to effect the application of said second output signals to said activating means to bring said display means to a predetermined state in which the desired calendar period is displayed.
Claim 2
Dependent Claim
329 words
An electronic perpetual calendar capable of displaying at least selected yearly or monthly calendar periods for any year in a given span of years falling between the year 0 and the year 9,999 in either the Gregorian or the Julian calendar, comprising: A. a calendar period display system, including 1. means for providing a visual display of each of a plurality of calendar periods representing at least the seven possible types of regular years, the seven possible types of leap years, the seven possible types of 31-day months, the seven possible types of 30-day months, the seven possible types of 29-day months, and the seven possible types of 28-day months, and 2. means for activating said display means; B. a calendar period selector circuit, including 1. signal generating means for providing electronic input signals corresponding at least to the available span of year numbers and the twelve months of the year, 2. selector switch means settable to respective control positions to provide for the derivation, from said signal generating means, of specific input signals corresponding, for either type of calendar, to the number of the year desired or to the name of the month plus the number of the year desired, and 3. first logic circuit means responsive to said specific input signals for providing corresponding first output signals; and C. a calendar period display system control circuit, including 1. second logic circuit means responsive to said first output signals for providing corresponding second output signals representative of the desired calendar period display and to be applied to said activating means, and 2. operator switch means for enabling said control circuit and said selector circuit, (a) so as to effect the generation of said specific input signals and the resultant first and second output signals and (b) so as to effect the application of said second output signals to said activating means to bring said display means to a predetermined state in which the desired calendar period is displayed.
Claim 3
Dependent Claim
13 words
means for activating said display means; B. a calendar period selector circuit, including
Claim 4
Dependent Claim
13 words
means for activating said display means; B. a calendar period selector circuit, including
Claim 5
Dependent Claim
50 words
selector switch means settable to respective control positions to provide for the derivation, from said signal generating means, of specific input signals corresponding, for either type of calendar, to the number of the year desired or to the name of the month plus the number of the year desired, and
Claim 6
Dependent Claim
50 words
selector switch means settable to respective control positions to provide for the derivation, from said signal generating means, of specific input signals corresponding, for either type of calendar, to the number of the year desired or to the name of the month plus the number of the year desired, and
Claim 7
Dependent Claim
66 words
operator switch means for enabling said control circuit and said selector circuit, (a) so as to effect the generation of said specific input signals and the resultant first and second output signals and (b) so as to effect the application of said second output signals to said activating means to bring said display means to a predetermined state in which the desired calendar period is displayed.
Claim 8
Dependent Claim
66 words
operator switch means for enabling said control circuit and said selector circuit, (a) so as to effect the generation of said specific input signals and the resultant first and second output signals and (b) so as to effect the application of said second output signals to said activating means to bring said display means to a predetermined state in which the desired calendar period is displayed.
Claim 9
Dependent Claim
36 words
A perpetual calendar according to claim 1, wherein said first logic circuit means comprises memory means at the addresses of which are located respective code numbers each designating a respective one of the available calendar periods.
Claim 10
Dependent Claim
38 words
selector switch means settable to respective control positions to provide for the derivation, from said signal generating means, of specific input signals corresponding, for either type of calendar, to at least the number of the year desired, and
Claim 11
Dependent Claim
38 words
selector switch means settable to respective control positions to provide for the derivation, from said signal generating means, of specific input signals corresponding, for either type of calendar, to at least the number of the year desired, and
Claim 12
Dependent Claim
66 words
operator switch means for enabling said control circuit and said selector circuit, (a) so as to effect the generation of said specific input signals and the resultant first and second output signals and (b) so as to effect the application of said second output signals to said activating means to bring said display means to a predetermined state in which the desired calendar period is displayed.
Claim 13
Dependent Claim
66 words
operator switch means for enabling said control circuit and said selector circuit, (a) so as to effect the generation of said specific input signals and the resultant first and second output signals and (b) so as to effect the application of said second output signals to said activating means to bring said display means to a predetermined state in which the desired calendar period is displayed.
Claim 14
Dependent Claim
13 words
means for activating said display means; B. a calendar period selector circuit, including
Claim 15
Dependent Claim
13 words
means for activating said display means; B. a calendar period selector circuit, including
Claim 16
Dependent Claim
44 words
selector switch means settable to respective control positions to provide for the derivation, from said signal generating means, of specific input signals corresponding, for either type of calendar, to at least the name of the month plus the number of the year desired, and
Claim 17
Dependent Claim
44 words
selector switch means settable to respective control positions to provide for the derivation, from said signal generating means, of specific input signals corresponding, for either type of calendar, to at least the name of the month plus the number of the year desired, and
Claim 18
Dependent Claim
66 words
operator switch means for enabling said control circuit and said selector circuit, (a) so as to effect the generation of said specific input signals and the resultant first and second output signals and (b) so as to effect the application of said second output signals to said activating means to bring said display means to a predetermined state in which the desired calendar period is displayed.
Claim 19
Dependent Claim
66 words
operator switch means for enabling said control circuit and said selector circuit, (a) so as to effect the generation of said specific input signals and the resultant first and second output signals and (b) so as to effect the application of said second output signals to said activating means to bring said display means to a predetermined state in which the desired calendar period is displayed.
Claim 20
Dependent Claim
13 words
means for activating said display means; B. a calendar period selector circuit, including
Claim 21
Dependent Claim
13 words
means for activating said display means; B. a calendar period selector circuit, including
Claim 22
Dependent Claim
26 words
first logic circuit means responsive to said specific input signals for providing corresponding first output signals; and C. a calendar period display system control circuit, including
Claim 23
Dependent Claim
26 words
first logic circuit means responsive to said specific input signals for providing corresponding first output signals; and C. a calendar period display system control circuit, including
Claim 24
Dependent Claim
26 words
first logic circuit means responsive to said specific input signals for providing corresponding first output signals; and C. a calendar period display system control circuit including
Claim 25
Dependent Claim
26 words
first logic circuit means responsive to said specific input signals for providing corresponding first output signals; and C. a calendar period display system control circuit including
Claim 26
Dependent Claim
26 words
first logic circuit means responsive to said specific input signals for providing corresponding first output signals; and C. a calendar period display system control circuit, including
Claim 27
Dependent Claim
26 words
first logic circuit means responsive to said specific input signals for providing corresponding first output signals; and C. a calendar period display system control circuit, including
Claim 28
Dependent Claim
70 words
A perpetual calendar according to claim 1, wherein said first logic circuit means comprises a pair of ''''read only'''' memories, respective code numbers each designating a respective one of the fourteen possible yearly calendars being located at the addresses of one of said memories, and respective code numbers each designating a respective one of the twenty-eight possible monthly calendars being located at the addresses of the other of said memories.
Claim 29
Dependent Claim
81 words
A perpetual calendar according to claim 1, wherein said signal generating means comprises first and second pairs of decade counters, each with 10 coded decimal outputs, connected so as to have each pair able to count from 0 to 99 to represent, in the one case a first number constituted by the thousands and hundreds digits of any selected year number, and in the other case a second number constituted by the tens and units digits of any selected year number.
Claim 30
Dependent Claim
141 words
A perpetual calendar according to claim 4, wherein said first logic circuit means comprises first and second counters arranged to divide said first number by 4 and by 7, respectively, a third counter arranged to divide said second number by 28, and a first memory having first and second address registers and 203 addresses at each of which is located a respective code number designating a respective one of the fourteen available yearly calendar periods, said first and second counters being connectEd to apply their outputs to said first register, and said third counter being connected to apply its output to said second register, and said selector switch means comprising a calendar type selector switch arranged to enable said first counter for a Gregorian calendar period display only and to enable said second counter for a Julian calendar period display only.
Claim 31
Dependent Claim
206 words
A perpetual calendar according to claim 5, wherein said first logic circuit means further comprises a second memory having third and fourth address registers and 168 addresses at each of which is located a respective code number designating a respective one of the twenty-eight available monthly calendar periods, said first memory being connected to apply its code number output to said second logic circuit means and said third address register, a source of twelve binary number signals each corresponding to a respective one of the months of the year connected to said fourth address register, and said selector switch means further comprising a month/year selector switch arranged either, if a monthly calendar period display is desired, to effect the application of the code number output of said first memory to said third address register jointly with the application of the output of said binary number signal source to said fourth address register for providing a monthly calendar period code number output from said second memory to be applied to said second logic circuit means, or, if a yearly calendar period display is desired, to effect the application of the yearly calendar period code number output of said first memory exclusively to said second logic circuit means.
Claim 32
Dependent Claim
105 words
A perpetual calendar according to claim 6, wherein said first logic circuit means further comprises a permanent register connected to apply an output, representing a fixed number other than any of the numbers available from said third counter, to said second address register for accessing the addresses of code numbers designating only century years, and gate means responsive, upon said calendar type selector switch being set for the Gregorian calendar, to signals from said second pair of decade counters corresponding to said second number being ''''00'''' for enabling said permanent register and concomitantly blocking the output of said third counter from said second address register.
Claim 33
Dependent Claim
117 words
A perpetual calendar according to claim 7, wherein said display means comprises a series of graphic representations of the available calendar periods, and means for selectively visualizing each of said representations, said activating means comprises a stepping motor for moving said graphic representations sequentially through a common viewing position therefor, and said second logic circuit means comprises binary downcounter means operable to effect the application of said second output signals to said stepping motor in response to the application of said first output signals from said first logic circuit means to said binary downcounter means for driving said stepping motor to move said graphic representations until the one depicting the desired calendar period reaches the viewing position.
Claim 34
Dependent Claim
69 words
A perpetual calendar according to claim 8, wherein said binary downcounter means comprises first and second binary downcounters arranged to operate in sequence, one to drive said stepping motor so as to move said graphic representations to an initial state, and the other to drive said stepping motor so as to move the desired one of said graphic representations out of said initial state and to said viewing position.
Claim 35
Dependent Claim
45 words
A perpetual calendar according to claim 1, wherein said first logic circuit means comprises electronic calculator means programmed to perform a series of mathematical operations to transform said specific input signals into respective code numbers each designating a respective one of the available calendar periods.
Claim 36
Dependent Claim
81 words
A perpetual calendar according to claim 10, wherein said signal generating means comprises first and second pairs of decadE counters each with 10 decoded decimal outputs, connected so as to have each pair able to count from 0 to 99 to represent, in the one case a first number constituted by the thousands and hundreds digits of any selected year number, and in the other case a second number constituted by the tens and units digits of any selected year number.
Claim 37
Dependent Claim
117 words
A perpetual calendar according to claim 11, wherein said display means comprises a series of graphic representations of the available calendar periods, and means for selectively visualizing each of said representations, said activating means comprises a stepping motor for moving said graphic representations sequentially through a common viewing position therefor, and said second logic circuit means comprises binary downcounter means operable to effect the application of said second output signals to said stepping motor in response to the application of said first output signals from said first logic circuit means to said binary downcounter means for driving said stepping motor to move said graphic representations until the one depicting the desired calendar period reaches the viewing position.
Claim 38
Dependent Claim
69 words
A perpetual calendar according to claim 12, wherein said binary downcounter means comprises first and second binary downcounters arranged to operate in sequence, one to drive said stepping motor so as to move said graphic representations to an initial state, and the other to drive said stepping motor so as to move the desired one of said graphic representations out of said initial state and to said viewing position.
Claim 39
Dependent Claim
68 words
A perpetual calendar according to claim 1, wherein said display means comprises a motion picture film strip movable longitudinally past a viewing position and depicting in respective frames the images of the available calendar periods, and means for visualizing each of said images at said viewing position, and said activating means comprises a sprocket drivingly engaging said film strip, and a stepping motor drivingly connected with said sprocket.
Claim 40
Dependent Claim
94 words
A perpetual calendar according to claim 14, wherein said second logic circuit means comprises means operable, upon activation of said control circuit by said operator switch means, in sequence to first drive said stepping motor for moving said film strip so as to bring a reference frame thereof into said viewing position and then to drive said stepping motor for moving said film strip so as to bring into said viewing position that one of said frames depicting the calendar period image corresponding to said specific input signals derived from said signal generating means.
Claim 41
Dependent Claim
47 words
An electronic perpetual calendar capable of displaying at least selected yearly calendar periods for any year in a given span of years falling between the year 0 and the year 9,999 in either the Gregorian or the Julian calendar, comprising: A. a calendar period display system, including
Claim 42
Dependent Claim
47 words
An electronic perpetual calendar capable of displaying at least selected yearly calendar periods for any year in a given span of years falling between the year 0 and the year 9,999 in either the Gregorian or the Julian calendar, comprising: A. a calendar period display system, including
Claim 43
Dependent Claim
47 words
An electronic perpetual calendar capable of displaying at least selected monthly calendar periods for any year in a given span of years falling between the year 0 and the year 9,999 in either the Gregorian or the Julian calendar, comprising: A. a calendar period display system, including
Claim 44
Dependent Claim
47 words
An electronic perpetual calendar capable of displaying at least selected monthly calendar periods for any year in a given span of years falling between the year 0 and the year 9,999 in either the Gregorian or the Julian calendar, comprising: A. a calendar period display system, including
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) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |