Patent US3687529A successfully refreshed from Google Patents.
US3687529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for presenting audio and visual informations
Assignee: Canon Inc
•
Filing: 1971-01-15
•
Granted: 1972-08-29
•
Expires: 1991-01-15
Abstract
Abstract Apparatus capable of selective display in sequence of a series of visual presentations or a selected still visual presentation and reproducing audio information associated with the displayed visual presentations or presentation, comprising a projector head, and control means to present continuously a series of pictures or a still picture, and a magnetic sound head adapted to reproduce audio signals from a magnetic sound track of a film strip when the latter is transported for continuous series picture projection, or to transfer the reproduced audio signals to an endless tape for playback when the film is stopped for still picture projection.
Inventors
- 👤 Takeshi Goshima
- 👤 Yasutaka Iwawaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:18
CPC Classifications
G; G03; G03B; G03B31/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
240 words
An apparatus for presenting audio and visual informations of the type capable of displaying selectively a series of continuous pictures or a still picture and reproducing audio informations associated with said displayed picture or pictures, an improvement comprising means for reproducing video information recorded upon a video information recording medium, said means including a first switching means for selectively permitting the reproduction of a series of continuous pictures or a single still or stationary picture. means for reproducing audio information associated with said reproduced pictures and recorded upon an audio information recording medium and for transferring thus reproduced audio information upon an endless magnetic recording medium, means for selectively reproducing either of the audio information upon said recording medium or the audio information transferred upon said endless magnetic recording medium, said audio information reproducing means having a second switching means for selecting either of said two audio information reproductions, and control means coupled to said audio information transfer means and said first and second switching means for applying them the control signals for controlling said switchings, said control means being such that when the continuous picture display operation is switched to the still picture display operation, said control means actuates said first and second switching means so that said picture reproduction means may display a still picture while said audio information reproduction means may reproduce the audio information transferred upon said endless magnetic recording medium by said second switching means.
Claim 2
Independent Claim
240 words
An apparatus for presenting audio and visual informations of the type capable of displaying selectively a series of continuous pictures or a still picture and reproducing audio informations associated with said displayed picture or pictures, an improvement comprising means for reproducing video information recorded upon a video information recording medium, said means including a first switching means for selectively permitting the reproduction of a series of continuous pictures or a single still or stationary picture. means for reproducing audio information associated with said reproduced pictures and recorded upon an audio information recording medium and for transferring thus reproduced audio information upon an endless magnetic recording medium, means for selectively reproducing either of the audio information upon said recording medium or the audio information transferred upon said endless magnetic recording medium, said audio information reproducing means having a second switching means for selecting either of said two audio information reproductions, and control means coupled to said audio information transfer means and said first and second switching means for applying them the control signals for controlling said switchings, said control means being such that when the continuous picture display operation is switched to the still picture display operation, said control means actuates said first and second switching means so that said picture reproduction means may display a still picture while said audio information reproduction means may reproduce the audio information transferred upon said endless magnetic recording medium by said second switching means.
Claim 3
Dependent Claim
22 words
An apparatus according to claim 1, wherein said picture recording medium and said audio information recording medium are the common recording medium.
Claim 4
Dependent Claim
59 words
An apparatus according to claim 2, wherein a series of a still pictures are continuously recorded upon said common recording medium while the audio information associated with said pictures are recorded upon said common recording medium in such a way that said associated audio information may be reproduced simultaneously when said pictures associated with said audio information are reproduced.
Claim 5
Dependent Claim
33 words
An apparatus according to claim 3, wherein said series of still pictures are optically recorded upon said common recording medium while said associated audio information is magnetically recorded upon said common recording medium.
Claim 6
Dependent Claim
139 words
An apparatus according to claim 1, wherein said control means comprises a counter, a detector connected said counter means for detecting the content thereof, and a control signal generating circuit connected to said detector means for generating a switching control signal in response to the detection of said detector means, said counter means counting the number of revolutions of said endless magnetic recordIng medium, said detecting means generating the output signal when said counter means counts the specified number so as to apply the output signal to said control signal to said control signal generating circuit, said control signal generating circuit being connected to said first and second switching means so as to actuate them in response to the generation of the control signals, thereby reproducing continuous pictures and the audio information recorded upon said audio information recording medium.
Claim 7
Dependent Claim
158 words
An apparatus according to claim 5, wherein said control means further comprises a recording circuit including a magnetic transducer means which is adapted to record upon said endless magnetic recording medium a signal to be counted in synchronism with the actuation of said first switching means for switching the continuous-picture-display operation to the still-picture-display operation, and a signal reproduction circuit including a magnetic transducer means for reproducing said signal to be counted, recorded upon said endless magnetic recording medium and applying this reproduced signal to said counter means so that upon said switching from said continuous-picture-display operation to said still-picture-display operation, said signal to be counted, recorded upon said endless magnetic recording medium is reproduced and the number of revolution of said endless magnetic recording medium is counted by said counter means, whereby said first and second switching means are actuated by said control signal generating circuit when the content of said counter means reaches the specified number.
Claim 8
Dependent Claim
100 words
An apparatus according to claim 6, wherein said counter means has a subtraction input terminal and an addition input terminal so that when said first switching means is so actuated to switch said continuous-picture display operation to said still-picture-display operation, pulses corresponding in number to the number of revolutions of said endless magnetic recording medium are applied to said addition input terminal, while the output of said signal reproducing circuit is connected to said subtraction input terminal, and said detection means detects the specified number zero in said counter means so as to actuate said first and second switching means.
References Cited (Backward Citations)
US3049965A
Cited
US3591266A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |