Patent EP0610587B1 successfully refreshed from Google Patents.
EP0610587B1
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Digital signal processing apparatus
Assignee: Sony Corp
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Filing: 1993-12-17
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Granted: 1999-03-17
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Expires: 2013-12-17
Abstract
No abstract record available.
Inventors
- 👤 Masaki C/O Sony Corporation Oguro
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 13:20
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: 26
Claim 1
Independent Claim
99 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 (81, 83, 85) for processing said digital video signal by operating upon said
compressed frequency components of said digital video signal to selectively achieve
fade-in and fade-out effects, wherein said compressed frequency components include
an orthogonally transformed DC component and an AC component and said means
(81, 83, 85) for processing operates upon said DC component and does not affect the
AC component.
Claim 2
Dependent Claim
41 words
The apparatus of claim 1, wherein said compressed frequency components are
framed, digitized video data, and said means for receiving includes means (4) for de-framing
received digitized video data and wherein said means for processing
processes said de-framed digitized video data.
Claim 3
Dependent Claim
28 words
The apparatus of claim 2, wherein said means for receiving further comprises means
(2) for detecting errors in said digitized video data and for correcting said detected
errors.
Claim 4
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 5
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 6
Independent Claim
21 words
The apparatus of anyone of claims 1 to 5, wherein said DC component comprises a
luminance portion and a chrominance portion.
Claim 7
Dependent Claim
58 words
The apparatus of claim 6, wherein said means for processing comprises means (88)
for generating a control value, means (81) for varying said control value, and means
(82) 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 8
Dependent Claim
49 words
The apparatus of claim 7, 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 9
Dependent Claim
96 words
The apparatus of claim 6, wherein said means for processing comprises means (88)
for generating a control value, means (85) for varying said control value, means (86)
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
(86) 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 10
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 11
Dependent Claim
29 words
The apparatus of claim 1, wherein said means for processing operates upon only said
compressed frequency components of said digital video signal to selectively achieve
fade-in and fade-out effects.
Claim 12
Dependent Claim
14 words
The apparatus of claim 1, wherein said digital video signal is an image signal.
Claim 13
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 14
Dependent Claim
11 words
Digital signal reproducing apparatus comprising an apparatus according to claim 1.
Claim 15
Independent Claim
43 words
The apparatus according to anyone of the preceding claims, further comprising
means for selectively scrambling at least a portion of said digital image signal by
scrambling selected ones of said compressed frequency components and transmitting
said scrambled signal to said means for receiving.
Claim 16
Dependent Claim
31 words
The apparatus of claim 15, further comprising means for determining whether the
digital image signal should be scrambled and for controlling said means for
selectively scrambling in accordance with that determination.
Claim 17
Dependent Claim
18 words
The apparatus of claim 15, wherein said means for scrambling scrambles selected
fields of said digital image signal.
Claim 18
Dependent Claim
33 words
The apparatus of claim 15, wherein said compressed frequency components of said
digital image signal comprise a DC component and AC components and wherein said
means for scrambling scrambles only said DC component.
Claim 19
Dependent Claim
19 words
The apparatus of claim 15, further comprising means for recording said scrambled
digital image signal on a recording medium.
Claim 20
Dependent Claim
27 words
The apparatus of claim 15, wherein said means for receiving comprises means for
reproducing said compressed frequency components of said digital image signal from
a recording medium.
Claim 21
Dependent Claim
64 words
The apparatus of claim 20, wherein said recording medium comprises a digital video
tape stored in a housing and having a memory device disposed in said housing, said
memory device storing a tape ID number;
and wherein said means for selectively
scrambling scrambles said digital image signal when said stored tape ID number, retrieved by a means for retrieving,
differs from a predetermined number.
Claim 22
Dependent Claim
37 words
The apparatus of claim 15, further comprising means for determining whether the
received compressed frequency components of said digital image signal are
scrambled; and means for selectively descrambling said compressed frequency
components in response to such determination.
Claim 23
Dependent Claim
26 words
The apparatus of claim 15, wherein said compressed frequency components of said
digital image signal are compressed frequency components of a discrete cosine
transformed image signal.
Claim 24
Dependent Claim
38 words
The apparatus according to claim 15, further comprising
means for selectively descrambling at least a portion of said digital image signal by
descrambling said scrambled compressed frequency components, and outputting said
descrambled signal to said means for receiving.
Claim 25
Dependent Claim
11 words
Digital signal reproducing apparatus comprising an apparatus according to claim 24.
Claim 26
Dependent Claim
37 words
The appparatus of claim 24, further comprising means for determining whether the
scrambled compressed frequency components of said digital image signal should be
descrambled and for controlling said means for selectively descrambling in
accordance with that determination.
References Cited (Backward Citations)
No citation records indexed.
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