← Back to Patent Explorer
US4567531A Expired / Lapsed US ⏱️ 0.0 years remaining

Vertical interval signal encoding under SMPTE control

Assignee: Discovision Associates
•
Filing: 1982-07-26
•
Granted: 1986-01-28
•
Expires: 2002-07-26
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A method and means for vertical interval encoding of a program signal having at least a video program portion with sequential fields separated by vertical intervals, the program signal having associated therewith sequential field related identification code signals, wherein a desired field related identification code at which encoding of the program signal is to commence is selected. Continuously recurring vertical interval code signals are generated at predetermined intervals corresponding to like intervals between groups of fields, for example two or three, of the program signal. The identification code associated with the program signal is then compared with the selected identification code, and upon the occurrence of a match of identification codes, the composite video program signal is signal-mixed with the vertical interval code signal in timed relationship so as to insert the vertical interval code signal in corresponding vertical intervals of the program signal.

Inventors

  • 👤 George K. Tabata

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 17:19
CPC Classifications
G; G11; G11B; G11B27/00; G11B27/005; G11B27/02; G11B27/022; G11B27/029; G11B27/10; G11B27/102; G11B27/105; G11B27/19; G11B27/28; G11B27/30; G11B27/3027; G11B27/3036; G11B27/3054; G11B2220/00; G11B2220/20; G11B2220/90; G11B27/024; G11B27/026

Claims Analysis

Total Claims: 30
Claim 1
Independent Claim 161 words
A method for vertical interval signal encoding of a composite video program signal having at least a video program portion with sequential fields separated by vertical intervals, said program signal having associated therewith sequential field related identification code signals, said method comprising the steps of: generating a desired field related identification code at which encoding of said composite video program signal is to commence; generating continuously recurring vertical interval code signals, signal-compatible with said program signal and synchronous therewith, at predetermined intervals corresponding to like intervals between groups of fields of said program signal; comparing said field related identification code signals associated with said program signal with the selected desired field related identification code; and upon the occurence of a match of identification codes in said comparing step, signal-mixing said composite video program signal and said vertical interval code signals in timed relationship so as to insert said vertical interval code signals in time corresponding vertical intervals of said program signal.
Claim 2
Independent Claim 161 words
A method for vertical interval signal encoding of a composite video program signal having at least a video program portion with sequential fields separated by vertical intervals, said program signal having associated therewith sequential field related identification code signals, said method comprising the steps of: generating a desired field related identification code at which encoding of said composite video program signal is to commence; generating continuously recurring vertical interval code signals, signal-compatible with said program signal and synchronous therewith, at predetermined intervals corresponding to like intervals between groups of fields of said program signal; comparing said field related identification code signals associated with said program signal with the selected desired field related identification code; and upon the occurence of a match of identification codes in said comparing step, signal-mixing said composite video program signal and said vertical interval code signals in timed relationship so as to insert said vertical interval code signals in time corresponding vertical intervals of said program signal.
Claim 3
Dependent Claim 33 words
The method as claimed in claim 1, wherein said vertical interval code signal is a white flag inserted in a prescribed line position of said time corresponding vertical intervals of said program signal.
Claim 4
Dependent Claim 23 words
The method as claimed in claim 2, wherein said recurring vertical intervals are those occurring alternately in a 2-2 pulldown program signal format.
Claim 5
Dependent Claim 20 words
The method as claimed in claim 3, wherein said recurring vertical intervals are those occurring as alternate even vertical intervals.
Claim 6
Dependent Claim 20 words
The method as claimed in claim 3, wherein said recurring vertical intervals are those occurring as alternate odd vertical intervals.
Claim 7
Dependent Claim 43 words
The method as claimed in claim 2, wherein: groups of at least two of said sequential fields define sequential picture frames of said program signals; and said recurring vertical intervals are those associated with the first video field of each new picture frame.
Claim 8
Dependent Claim 38 words
The method as claimed in claim 2, wherein said recurring vertical intervals are those occurring at the beginning of fields other than fields two and four of a five field sequence of a 3-2 pulldown program signal format.
Claim 9
Dependent Claim 28 words
The method as claimed in claim 7, wherein said recurring vertical intervals are those occurring at field positions one and three in a 3-2 pulldown program signal format.
Claim 10
Dependent Claim 49 words
The method as claimed in claim 7, wherein said composite video program signal is derived from a motion picture film medium, and said method includes the step of recording a SMPTE time code on a recording track of a video tape while performing a film-to-tape transfer of the program.
Claim 11
Dependent Claim 38 words
The method as claimed in claim 1, wherein said vertical interval code signal is digital data inserted in a prescribed line position during recurring vertical intervals of the program material, said digital data representing current program address information.
Claim 12
Dependent Claim 33 words
The method as claimed in claim 1, wherein said field related identification code signals are SMPTE code designations individually identifying the first field of each new sequential picture frame of said program signal.
Claim 13
Dependent Claim 27 words
The method as claimed in claim 1, wherein said field related identification code signals are SMPTE code designations recurring at every second field of said program signal.
Claim 14
Dependent Claim 45 words
The method as claimed in claim 1, including the step of recording said composite video program signal onto a recording medium, and said vertical interval code signals identify lead-in and lead-out portions of the program signal before and after, respectively, a recorded main program segment.
Claim 15
Dependent Claim 162 words
Apparatus for vertical interval signal encoding of a composite video program signal housing at least a video program portion with sequential fields separated by vertical intervals, said program signal having associated therewith sequential field related identification code signals, said apparatus comprising: means for generating a desired field related identification code at which encoding of said composite video program signal is to commence; means for generating continuously recurring vertical interval code signals, signal compatible with said program signal and synchronous therewith, at predetermined intervals corresponding to like intervals between picture frames of said program signal; a comparator for comparing said field related identification code signals associated with said program signal with the selected defired field related identification code; and means for signal-mixing, upon the occurrence of a match of identification codes, said composite video program signal and said vertical interval code signals in timed relationship so as to insert said vertical interval code signals in time corresponding vertical intervals of said program signal.
Claim 16
Dependent Claim 162 words
Apparatus for vertical interval signal encoding of a composite video program signal housing at least a video program portion with sequential fields separated by vertical intervals, said program signal having associated therewith sequential field related identification code signals, said apparatus comprising: means for generating a desired field related identification code at which encoding of said composite video program signal is to commence; means for generating continuously recurring vertical interval code signals, signal compatible with said program signal and synchronous therewith, at predetermined intervals corresponding to like intervals between picture frames of said program signal; a comparator for comparing said field related identification code signals associated with said program signal with the selected defired field related identification code; and means for signal-mixing, upon the occurrence of a match of identification codes, said composite video program signal and said vertical interval code signals in timed relationship so as to insert said vertical interval code signals in time corresponding vertical intervals of said program signal.
Claim 17
Dependent Claim 35 words
The apparatus as claimed in claim 14, wherein said vertical interval code signal is defined by a white flag placed in a prescribed line position of said time corresponding vertical intervals of said program signal.
Claim 18
Dependent Claim 23 words
The apparatus as claimed in claim 15, wherein said recurring vertical intervals are those occurring alternately in a 2-2 pulldown program signal format.
Claim 19
Dependent Claim 20 words
The apparatus as claimed in claim 16, wherein said recurring vertical intervals are those occurring as alternate even vertical intervals.
Claim 20
Dependent Claim 32 words
The apparatus as claimed in claim 17, wherein said white flag is inserted by said means for signal-mixing in line position 11 of the first video field of each new picture frame.
Claim 21
Dependent Claim 20 words
The apparatus as claimed in claim 16, wherein said recurring vertical intervals are those occurring as alternate odd vertical intervals.
Claim 22
Dependent Claim 43 words
The apparatus as claimed in claim 15, wherein: groups of at least two of said sequential fields define sequential picture frames of said program signal; and said recurring vertical intervals are those associated with the first video field of each new picture frame.
Claim 23
Dependent Claim 38 words
The apparatus as claimed in claim 15, wherein said vertical interval code signal is digital data inserted in a prescribed line position during recurring vertical intervals of the program material, said digital data representing current program address information.
Claim 24
Dependent Claim 37 words
The apparatus as claimed in claim 15, wherein said recurring vertical intervals are those occurring at field positions other than field positions two and four of a five field sequence in a 3-2 pulldown program signal format.
Claim 25
Dependent Claim 28 words
The apparatus as claimed in claim 22, wherein said recurring vertical intervals are those occurring at field positions one and three in a 3-2 pulldown program signal format.
Claim 26
Dependent Claim 29 words
The apparatus as claimed in claim 14, wherein said field related identification code signals are SMPTE code designations individually identifying each new sequential picture frame of said program signal.
Claim 27
Independent Claim 171 words
A method for vertical interval signal encoding of a composite video program signal recorded on a recording medium and having at least a video program portion with sequential fields separated by vertical intervals, said method comprising the steps of: depositing on said recording medium sequential identification code signals field related to, and in synchronization with, said program sequential fields; selecting a desired field related identification code at which encoding of said composite video program signal is to commence; generating continuously recurring vertical interval code signals, signal-compatible with said program signal, at predetermined intervals corresponding to like intervals between groups of fields of said program signal; comparing said field related identification code signals associated with said program signal with the selected desired field related identification code; and upon the occurrence of a match of identification codes in said comparing step, signal-mixing said composite video program signal and said vertical interval code signals in timed relationship so as to insert said vertical interval code signals in corresponding vertical intervals of said program signal.
Claim 28
Independent Claim 171 words
A method for vertical interval signal encoding of a composite video program signal recorded on a recording medium and having at least a video program portion with sequential fields separated by vertical intervals, said method comprising the steps of: depositing on said recording medium sequential identification code signals field related to, and in synchronization with, said program sequential fields; selecting a desired field related identification code at which encoding of said composite video program signal is to commence; generating continuously recurring vertical interval code signals, signal-compatible with said program signal, at predetermined intervals corresponding to like intervals between groups of fields of said program signal; comparing said field related identification code signals associated with said program signal with the selected desired field related identification code; and upon the occurrence of a match of identification codes in said comparing step, signal-mixing said composite video program signal and said vertical interval code signals in timed relationship so as to insert said vertical interval code signals in corresponding vertical intervals of said program signal.
Claim 29
Dependent Claim 292 words
Apparatus for vertical interval signal encoding of a composite video program signal housing at least a video program portion with sequential fields separated by vertical intervals, said program signal having associated therewith sequential field related identification code signals, said apparatus comprising: means for generating a desired field related identification code at which encoding of said composite video program signal is to commence; means for generating continuously recurring vertical interval code signals, signal compatible with said program signal and synchronous therewith, at predetermined intervals corresponding to like intervals between picture frame of said program signal; a comparator for comparing said field related identification code signals associated with said program signal with the selected desired field related identification code; and means for signal-mixing, upon the occurrence of a match of identification codes, said composute video program signal and said vertical interval code signals in timed relationship so as to insert said vertical interval code signal in time corresponding vertical intervals of said program signal, and wherein: said vertical interval code signal is defined by a white flag placed in a prescribed line position of said time corresponding vertical intervals of said program signal; and said means for generating continuously recurring vertical interval code signals comprises a modulo counter selectably setable between a modulo-2 configuration and a modulo-5 configuration, said vertical interval code signal being a white flag placed in a designated line position of alternate vertical intervals under the control of said means for generating when said counter is selectably set to a modulo-2 configuration, said vertical interval code signal being a white flag placed in a designated line position of every first and third vertical intervals under control of said means for generating when said counter is selectably set to a modulo-5 configuration.
Claim 30
Dependent Claim 292 words
Apparatus for vertical interval signal encoding of a composite video program signal housing at least a video program portion with sequential fields separated by vertical intervals, said program signal having associated therewith sequential field related identification code signals, said apparatus comprising: means for generating a desired field related identification code at which encoding of said composite video program signal is to commence; means for generating continuously recurring vertical interval code signals, signal compatible with said program signal and synchronous therewith, at predetermined intervals corresponding to like intervals between picture frame of said program signal; a comparator for comparing said field related identification code signals associated with said program signal with the selected desired field related identification code; and means for signal-mixing, upon the occurrence of a match of identification codes, said composute video program signal and said vertical interval code signals in timed relationship so as to insert said vertical interval code signal in time corresponding vertical intervals of said program signal, and wherein: said vertical interval code signal is defined by a white flag placed in a prescribed line position of said time corresponding vertical intervals of said program signal; and said means for generating continuously recurring vertical interval code signals comprises a modulo counter selectably setable between a modulo-2 configuration and a modulo-5 configuration, said vertical interval code signal being a white flag placed in a designated line position of alternate vertical intervals under the control of said means for generating when said counter is selectably set to a modulo-2 configuration, said vertical interval code signal being a white flag placed in a designated line position of every first and third vertical intervals under control of said means for generating when said counter is selectably set to a modulo-5 configuration.

References Cited (Backward Citations)

US4115819A Cited
US4134130A Cited
FR2376486A1 Cited
US4460927A Cited
DE2809490A1 Cited
US4417285A Cited
US4402018A Cited
US4214278A Cited
US4338629A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-01-27 1989-07-29 1990-01-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-01-27 1993-07-29 1994-01-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-01-27 1997-07-29 1998-01-28 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag