US5477276A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital signal processing apparatus for achieving fade-in and fade-out effects on digital video signals
Assignee: Sony Corp
•
Filing: 1993-12-14
•
Granted: 1995-12-19
•
Expires: 2013-12-14
Abstract
Abstract Digital signal processing apparatus in which compressed frequency components of a digital signal are processed to selectively achieve fade-in, fade-out and scene change effects and where the digital signal is scrambled (and subsequently descrambled) in whole or in by part scrambling (or descrambling) selected compressed frequency components of the digital signal.
Inventors
- 👤 Masaki Oguro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:28
CPC Classifications
H; H04; H04N; H04N5/00; H04N5/222; H04N5/262; H04N5/265; H04N19/00; H04N19/10; H04N19/134; H04N19/142; H04N19/169; H04N19/179; H04N19/48; H04N19/85; H04N19/87; H04N19/89; H04N19/895; H04N19/90; H04N21/00; H04N21/40; H04N21/43; H04N21/431; H04N21/4318; H04N21/44; H04N21/4405; H04N21/44055; H04N7/00; H04N7/16; H04N7/167; H04N7/1675; H04N7/24; H04N7/52; H04N7/54
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
63 words
Digital signal processing apparatus in which compressed frequency components of a digital video signal are processed to produce special video effects, comprising: means for receiving said compressed frequency components of said digital video signal; and means for processing said digital video signal by operating upon said compressed frequency components of said digital video signal to selectively achieve fade-in, fade-out and scene change effects.
Claim 2
Dependent Claim
63 words
Digital signal processing apparatus in which compressed frequency components of a digital video signal are processed to produce special video effects, comprising: means for receiving said compressed frequency components of said digital video signal; and means for processing said digital video signal by operating upon said compressed frequency components of said digital video signal to selectively achieve fade-in, fade-out and scene change effects.
Claim 3
Dependent Claim
40 words
The apparatus of claim 1, wherein said compressed frequency components are framed, digitized video data, and said means for receiving includes means for de-framing received digitized video data and wherein said means for processing processes said de-framed digitized video data.
Claim 4
Dependent Claim
27 words
The apparatus of claim 2, wherein said means for receiving further comprises means for detecting errors in said digitized video data and for correcting said detected errors.
Claim 5
Dependent Claim
22 words
The apparatus of claim 1, wherein said means for processing selectively achieves white fade-in, white fade-out, black fade-in and black fade-out effects.
Claim 6
Dependent Claim
18 words
The apparatus of claim 1, wherein said means for processing selectively achieves color fade-in and color fade-out effects.
Claim 7
Dependent Claim
75 words
Digital signal processing apparatus in which compressed frequency components of a digital video signal are processed to produce special video effects, comprising: means for receiving said compressed frequency components of said digital video signal, said compressed frequency components including an orthogonally transformed DC component; and means for processing said digital video signal by operating upon only said orthogonally transformed DC component of said digital video signal to selectively achieve fade-in, fade-out and scene change effects.
Claim 8
Dependent Claim
75 words
Digital signal processing apparatus in which compressed frequency components of a digital video signal are processed to produce special video effects, comprising: means for receiving said compressed frequency components of said digital video signal, said compressed frequency components including an orthogonally transformed DC component; and means for processing said digital video signal by operating upon only said orthogonally transformed DC component of said digital video signal to selectively achieve fade-in, fade-out and scene change effects.
Claim 9
Dependent Claim
17 words
The apparatus of claim 6, wherein said DC component comprises a luminance portion and a chrominance portion.
Claim 10
Dependent Claim
55 words
The apparatus of claim 7, wherein said means for processing comprises means for generating a control value, means for varying said control value, and means for adding the varied control value to said luminance portion of the DC component such that said fade-out effect and said fade-in effect are controlled by varying said control value.
Claim 11
Dependent Claim
49 words
The apparatus of claim 8, wherein said means for processing increases the control value from a predetermined minimum value to a predetermined maximum value to achieve said fade-out effect and decreases the control value from said predetermined maximum value to said predetermined minimum value to achieve said fade-in effect.
Claim 12
Dependent Claim
92 words
The apparatus of claim 7, wherein said means for processing comprises means for generating a control value, means for varying said control value, means for adding said control value to said chrominance portion of the DC component when a value of said chrominance portion is below a predetermined value and means for subtracting said control value from said chrominance portion of the DC component when said value of said chrominance portion is above said predetermined value, such that said fade-out effect and said fade-in effect are controlled by varying said control value.
Claim 13
Dependent Claim
20 words
The apparatus of claim 1, wherein said received compressed frequency components comprise a non-compressed DC component and compressed AC components.
Claim 14
Dependent Claim
31 words
The apparatus of claim 11, wherein said means for processing operates upon only said compressed frequency components of said digital video signal to selectively achieve fade-in, fade-out and scene change effects.
Claim 15
Dependent Claim
14 words
The apparatus of claim 1, wherein said digital video signal is an image signal.
Claim 16
Dependent Claim
26 words
The apparatus of claim 1, wherein said compressed frequency components of said digital video signal are compressed frequency components of a discrete cosine transformed video signal.
Claim 17
Dependent Claim
15 words
The apparatus of claim 1, further comprising means for reproducing said processed digital video signal.
References Cited (Backward Citations)
US4635112A
Cited
US4947251A
Cited
JPH01278183A
Cited
EP0346636A2
Cited
US5287187A
Cited
EP0432048A1
Cited
EP0454556A1
Cited
JPH04103271A
Cited
JPH04105475A
Cited
EP0493128A2
Cited
EP0506435A2
Cited
US5355173A
Cited
US5351083A
Cited
US5245436A
Cited
EP0582122A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-12-18 | 1999-06-19 | 1999-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-18 | 2003-06-19 | 2003-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-18 | 2007-06-19 | 2007-12-19 | $7700.00 | Window Closed / Lapsed |