US4205346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Video transition circuitry including transition previewing means
Assignee: Ross Video Ltd
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Filing: 1978-06-09
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Granted: 1980-05-27
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Expires: 1998-06-09
Abstract
Abstract Improved video transition circuitry including circuitry for previewing transitions from an on-air event signal to a next event signal. The circuitry includes a program transition switch responsive to the on-air event and next event signals for outputting the on-air event signal; a preview transition switch respnsive to the on-air event and next event signals for outputting the next event signal; transition control circuitry for either (a) controlling the program transition switch to effect a predetermined transition at the output of the program transition switch from the on-air event signal to the next event signal or (b) controlling the preview transition switch to effect a preview of the predetermined transition at the output of the preview transition switch where the predetermined transition may be, for example, a dissolve, a wipe or a bordered wipe.
Inventors
- 👤 John D. Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:28
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; G; G11; G11B; G11B27/00; G11B27/02; G11B27/031
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
116 words
Improved video transition circuitry including means for previewing transitions from an on-air event signal to a next event signal comprising program transition means responsive to said on-air event and next event signals for outputting the on-air event signal; preview transition means responsive to said on-air event and said next event signals for outputting said next event signal; and transition control means for either (a) controlling said program transition means to effect a predetermined transition at the output of said program transition means from said on-air event signal to said next event signal or (b) controlling said preview transition means to effect a preview of the said predetermined transition at the output of said preview transition means.
Claim 2
Dependent Claim
116 words
Improved video transition circuitry including means for previewing transitions from an on-air event signal to a next event signal comprising program transition means responsive to said on-air event and next event signals for outputting the on-air event signal; preview transition means responsive to said on-air event and said next event signals for outputting said next event signal; and transition control means for either (a) controlling said program transition means to effect a predetermined transition at the output of said program transition means from said on-air event signal to said next event signal or (b) controlling said preview transition means to effect a preview of the said predetermined transition at the output of said preview transition means.
Claim 3
Dependent Claim
80 words
Circuitry as in claim 1 where said transition control means includes (1) means for switching said on-air event signal to the output of said preview transition means in place of said next event signal and (2) means for changing the output at said preview transition means from said on-air event signal back to said next event signal in accordance with said predetermined transition to thereby effect said preview of the predetermined transition at the output of the preview transition means.
Claim 4
Dependent Claim
36 words
Circuitry as in claim 1 or 2 where said transition control means includes means for effecting a dissolve from said on-air event signal to said next event signal at the output of said program transition means.
Claim 5
Dependent Claim
27 words
Circuitry as in claim 3 where said transition control means includes means for effecting a preview of said dissolve at the output of said preview transition means.
Claim 6
Dependent Claim
36 words
Circuitry as in claim 1 or 2 where said transition control means includes means for effecting a wipe from said on-air event signal to said next event signal at the output of said program transition means.
Claim 7
Dependent Claim
27 words
Circuitry as in claim 5 where said transition control means includes means for effecting a preview of said wipe at the output of said preview transition means.
Claim 8
Dependent Claim
37 words
Circuitry as in claim 1 or 2 where said transition control means includes means for effecting a bordered wipe from said on-air event signal to said next event signal at the output of said program transition means.
Claim 9
Dependent Claim
28 words
Circuitry as in claim 7 where said transition control means includes means for effecting a preview of said bordered wipe at the output of said preview transition means.
Claim 10
Dependent Claim
35 words
Circuitry as in claim 2 where said transition control means includes means for maintaining said on-air event at the output of said program transition means while said preview of the predetermined transition is being effected.
Claim 11
Dependent Claim
25 words
Circuitry as in claim 1 including a control panel and where said transition control means includes transition preview switching means disposed at said control panel.
Claim 12
Dependent Claim
19 words
Circuitry as in claim 10 where said transition control means includes transition switching means disposed at said control panel.
Claim 13
Dependent Claim
19 words
Circuitry as in claim 11 where said transition control means includes a fader lever disposed at said control panel.
Claim 14
Dependent Claim
36 words
Circuitry as in claim 12 where said transition control means includes circuit means responsive to said transition switching means and said fader lever for effecting said predetermined transition at the output of the program transition means.
Claim 15
Dependent Claim
44 words
Circuitry as in claim 13 where said circuit means includes further circuit means responsive to said transition preview switching means, said transition switching means and said fader lever for effecting said preview of said predetermined transition at the output of said preview transition means.
Claim 16
Dependent Claim
27 words
Circuitry as in claim 14 where said transition switching means comprises a switch for effecting a dissolve from the on-air event signal to the next event signal.
Claim 17
Dependent Claim
27 words
Circuitry as in claim 14 where said transition switching means comprises a switch for effecting a wipe from said on-air event signal to said next event signal.
Claim 18
Dependent Claim
28 words
Circuitry as in claim 14 where said transition switching means comprises a switch for effecting a bordered wipe from said on-air event signal to said next event signal.
References Cited (Backward Citations)
US3506965A
Cited
US3604849A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-05-27 | 1983-11-26 | 1984-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-05-27 | 1987-11-26 | 1988-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-05-27 | 1991-11-26 | 1992-05-27 | $7700.00 | Window Closed / Lapsed |