Patent US4878131A successfully refreshed from Google Patents.
US4878131A
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Reproducing apparatus
Assignee: Canon Inc
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Filing: 1987-08-07
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Granted: 1989-10-31
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Expires: 2007-08-07
Abstract
Abstract Disclosed is a reproducing apparatus having synchronizing signal generating means of the self-running type, means for reproducing a video signal from a medium, and means for adding a synchronizing signal produced by the synchronizing signal generating means to the video signal reproduced by the reproducing means, wherein the synchronizing signal produced by the synchronizing signal generating menas of the self-running type is added to the video signal reproduced from the medium.
Inventors
- 👤 Tsuguhide Sakata
- 👤 Tomishige Taguchi
- 👤 Norio Kimura
- 👤 Kunio Tsuruno
- 👤 Yasutomo Suzuki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:22
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/76; H04N5/91; H04N5/93; H04N5/937
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
160 words
An image reproducing apparatus comprising: (a) reproducing means for reproducing an image signal recorded on a medium; (b) an image memory; (c) an address controller for generating an access address control signal for said image memory in response to a synchronizing signal applied thereto; (d) first synchronizing signal generating means; (e) second synchronizing signal generating means for generating a synchronizing signal synchronized with the image signal reproduced by said reproducing means; and (f) change-over means for selecting either of said first synchronizing signal generating means or said second synchronizing signal generating means to apply a signal to said address controller, said change-over means being arranged to apply the synchronizing signal generated by said second generating means to said address controller at the time of writing the image signal into said image memory and to apply the synchronizing signal generated by said first generating means to said address controller at the time of reading the image signal from said image memory.
Claim 2
Dependent Claim
160 words
An image reproducing apparatus comprising: (a) reproducing means for reproducing an image signal recorded on a medium; (b) an image memory; (c) an address controller for generating an access address control signal for said image memory in response to a synchronizing signal applied thereto; (d) first synchronizing signal generating means; (e) second synchronizing signal generating means for generating a synchronizing signal synchronized with the image signal reproduced by said reproducing means; and (f) change-over means for selecting either of said first synchronizing signal generating means or said second synchronizing signal generating means to apply a signal to said address controller, said change-over means being arranged to apply the synchronizing signal generated by said second generating means to said address controller at the time of writing the image signal into said image memory and to apply the synchronizing signal generated by said first generating means to said address controller at the time of reading the image signal from said image memory.
Claim 3
Dependent Claim
31 words
An apparatus according to claim 1, wherein said reproducing means ncludes: (a) a reproducing head; and (b) driving means for driving said head and said medium to produce relative rotation thereof.
Claim 4
Dependent Claim
54 words
An apparatus according to claim 2, wherein said driving means is arranged to drive said head and said medium to produce the relative rotation thereof so that the synchronizing signal generated by said first synchronizing signal generating means and the synchronizing signal generated by said second synchronizing signal generating means are synchronized in phase.
Claim 5
Dependent Claim
11 words
An apparatus according to claim 1, wherein said medium is disc-shaped.
Claim 6
Dependent Claim
23 words
An apparatus according to claim 1, wherein said memory is arranged to be capable of storing the image signal of one picture plane.
Claim 7
Dependent Claim
26 words
An apparatus according to claim 1, wherein said second synchronizing signal generating means is a separating circuit for separating the synchronizing signal from the reproduced signal.
Claim 8
Dependent Claim
26 words
An apparatus according to claim 1, wherein both of said first and second synchronizing signal generating means are arranged to generate horizontal and vertical synchronizing signals.
Claim 9
Dependent Claim
36 words
An apparatus according to claim 2, further comprising: control means for controlling said change-over means to effect change-over operation in response to an instruction for changing a position of said reproducing head relative to said medium.
Claim 10
Dependent Claim
25 words
An apparatus according to claim 1, wherein said address controller includes a counter which is arranged to be reset by the synchronizing signal applied thereto.
Claim 11
Dependent Claim
158 words
An image processing apparatus in which an image signal recorded on a medium is once stored in an image memory and then processed, comprising: (a) an address controller for generating an access address control signal for said image memory in response to a synchronizing signal applied thereto; (b) first synchronizing signal generating means; (c) second synchronizing signal generating means for generating a synchronizing signal synchronized with said image signal; and (d) change-over means for selecting either of said first synchronizing signal generating means or said second synchronizing signal generating means to apply a signal to said address controller, said change-over means being arranged to apply the synchronizing signal generated by said second generating means to said address controller at the time of writing the image signal into said image memory and to apply the synchronizing signal generated by said first generating means to said address controller at the time of reading the image signal from said image memory.
Claim 12
Dependent Claim
158 words
An image processing apparatus in which an image signal recorded on a medium is once stored in an image memory and then processed, comprising: (a) an address controller for generating an access address control signal for said image memory in response to a synchronizing signal applied thereto; (b) first synchronizing signal generating means; (c) second synchronizing signal generating means for generating a synchronizing signal synchronized with said image signal; and (d) change-over means for selecting either of said first synchronizing signal generating means or said second synchronizing signal generating means to apply a signal to said address controller, said change-over means being arranged to apply the synchronizing signal generated by said second generating means to said address controller at the time of writing the image signal into said image memory and to apply the synchronizing signal generated by said first generating means to said address controller at the time of reading the image signal from said image memory.
Claim 13
Dependent Claim
28 words
An apparatus according to claim 10, further comprising: (e) a reproducing head; and (f) driving means for driving said head and said medium to produce relative rotation thereof.
Claim 14
Dependent Claim
54 words
An apparatus according to claim 11, wherein said driving means is arranged to drive said head and said medium to produce the relative rotation therof so that the synchronizing signal generated by said first synchronizing signal generating means and the synchronizing signal generated by said second synchronizing signal generating means are synchronized in phase.
Claim 15
Dependent Claim
11 words
An apparatus according to claim 10, wherein said medium is disc-shaped.
Claim 16
Dependent Claim
23 words
An apparatus according to claim 10, wherein said memory is arranged to be capable of storing the image signal of one picture plane.
Claim 17
Dependent Claim
26 words
An apparatus according to claim 10, wherein said second synchronizing signal generating means is a separating circuit for separating the synchronizing signal from the reproduced signal.
Claim 18
Dependent Claim
26 words
An apparatus according to claim 10, wherein both of said first and second synchronizing signal generating means are arranged to generate horizontal and vertical synchronizing signals.
Claim 19
Dependent Claim
36 words
An apparatus according to claim 16, further comprising: control means for controlling said change-over means to effect change-over operation in response to an instruction for changing a position of said reproducing head relative to said medium.
Claim 20
Dependent Claim
158 words
An image reproducing apparatus, comprising: (a) reproducing means including a movable reproducing head for reproducing an image signal from a medium on which the image signal is recorded, said reproducing means being arranged to produce an on-tract signal every time when said reproducing head is displaced onto a position where the image signal is to be recorded; (b) means for producing a synchronizing signal and causing a phase synchronism to occur between said synchronizing signal and a synchronizing signal of the image signal reproduced by said reproducing means; (c) a memory into which said image signal is written; (d) writing means for writing said image signal into said memory in response to said on-tract signal; (e) reading means for reading the image signal written into said memory upon completion of writing operation of said writing means; and (f) means for adding the synchronizing signal produced by said producing means to the image signal read from said reading means.
Claim 21
Dependent Claim
158 words
An image reproducing apparatus, comprising: (a) reproducing means including a movable reproducing head for reproducing an image signal from a medium on which the image signal is recorded, said reproducing means being arranged to produce an on-tract signal every time when said reproducing head is displaced onto a position where the image signal is to be recorded; (b) means for producing a synchronizing signal and causing a phase synchronism to occur between said synchronizing signal and a synchronizing signal of the image signal reproduced by said reproducing means; (c) a memory into which said image signal is written; (d) writing means for writing said image signal into said memory in response to said on-tract signal; (e) reading means for reading the image signal written into said memory upon completion of writing operation of said writing means; and (f) means for adding the synchronizing signal produced by said producing means to the image signal read from said reading means.
Claim 22
Independent Claim
27 words
A device according to claims 18, further comprising: (g) means for prohibiting said image signal from being outputted when said image signal is written in said memory.
Claim 23
Dependent Claim
40 words
A device according to claim 19, wherein said adding means is a means for allowing the synchronizing signal reproduced by said producing means to be outputted even when the outputting of said image signal is prohibited by said prohibiting means.
Claim 24
Dependent Claim
25 words
A device according to claim 18, wherein said memory is a memory capable of writing a video signal for at least one picture frame therein.
Claim 25
Dependent Claim
41 words
An apparatus according to claim 18, wherein said writing means is arranged to write said input image signal into said memory only after both of said on-track signal and the vertical synchronizing signal of the input image signal have been obtained.
References Cited (Backward Citations)
US4743979A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-10-30 | 1993-05-01 | 1993-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-30 | 1997-05-01 | 1997-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-30 | 2001-05-01 | 2001-10-31 | $7700.00 | Window Closed / Lapsed |