EP0940761A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Detection of a unique pattern
Assignee: Sony Corp
•
Filing: 1999-03-01
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Granted: —
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Expires: 2019-03-01
Abstract
Abstract A signal processing apparatus and method and a provision medium arranged to enable detection of a unique pattern in a short time with high accuracy. A value representing a correlation between an input signal and a reference signal is calculated and the calculated correlation value is compared with a predetermined threshold value. The invention makes it possible to detect, for example, a unique word in a short time with high accuracy without influence of noise.
Inventors
- 👤 Yasunari Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 09:32
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/04; H04L7/041; H04L7/042; G; G06; G06F; G06F17/00; G06F17/10; G06F17/15; G11; G11B; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2537; G11B2220/2545; G11B2220/60
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
55 words
A signal processing apparatus which detects a
reference signal from an input signal, said apparatus
comprising: correlation value calculation means for calculating a
value representing a correlation between the input signal
and the reference signal; and comparison means for comparing the correlation value
calculated by the correlation value calculation means with a
predetermined threshold value.
Claim 2
Dependent Claim
77 words
A signal processing apparatus according to Claim 1,
wherein the input signal is formed of a first signal and a
second signal orthogonal to each other, and wherein said correlation value calculation means
includes a first correlation value calculation means for
calculating a value representing a correlation between the
first signal and the reference signal, and a second
correlation value calculation means for calculating a value
representing a correlation between the second signal and the
reference signal.
Claim 3
Dependent Claim
49 words
A signal processing apparatus according to Claim 2,
further comprising addition means for adding together an
output from said first correlation calculation means and an
output from said second correlation value calculation means, wherein said comparison means compares an output from
said addition means with the predetermined threshold value.
Claim 4
Dependent Claim
58 words
A signal processing apparatus according to Claim 2,
further comprising means for calculating the sum of the
second power of an output from said first correlation
calculation means and the second power of an output from
said second correlation value calculation means, wherein said comparison means compares the sum of the
second powers with the predetermined threshold value.
Claim 5
Dependent Claim
57 words
A signal processing apparatus according to Claim 2,
further comprising means for calculating the sum of the
absolute value of an output from said first correlation
calculation means and the absolute of an output from said
second correlation value calculation means, wherein said comparison means compares the sum of the
absolute values with the predetermined threshold value.
Claim 6
Dependent Claim
17 words
A signal processing apparatus according to Claim 1,
further comprising binalization means for binalizing the
input signal.
Claim 7
Dependent Claim
19 words
A signal processing apparatus according to Claim 1,
wherein said correlation value calculation means comprises a
complex digital filter.
Claim 8
Dependent Claim
59 words
A signal processing method in which a reference
signal is detected from an input signal, said method
comprising: a correlation value calculation step of calculating a
value representing a correlation between the input signal
and the reference signal; and a comparison step of comparing the correlation value
calculated in the correlation value calculation step with a
predetermined threshold value.
Claim 9
Dependent Claim
77 words
A signal processing method according to Claim 8,
wherein the input signal is formed of a first signal and a
second signal orthogonal to each other, and wherein said correlation value calculation step
includes a first correlation value calculation step of
calculating a value representing a correlation between the
first signal and the reference signal, and a second
correlation value calculation step of calculating a value
representing a correlation between the second signal and the
reference signal.
Claim 10
Dependent Claim
52 words
A signal processing method according to Claim 9,
further comprising an addition step of adding together an
output from said first correlation calculation step and an
output from said second correlation value calculation step,
wherein, in said comparison step, an output from said
addition step is compared with the predetermined threshold
value.
Claim 11
Dependent Claim
61 words
A signal processing method according to Claim 9,
further comprising a step of calculating the sum of the
second power of an output from said first correlation
calculation step and the second power of an output from said
second correlation value calculation step, wherein, in said comparison step, the sum of the second
powers is compared with the predetermined threshold value.
Claim 12
Dependent Claim
60 words
A signal processing method according to Claim 9,
further comprising a step of calculating the sum of the
absolute value of an output from said first correlation
calculation step and the absolute of an output from said
second correlation value calculation step, wherein, in said comparison step, the sum of the
absolute values is compared with the predetermined threshold
value.
Claim 13
Dependent Claim
17 words
A signal processing method according to Claim 8,
further comprising a step of binalizing the input signal.
Claim 14
Dependent Claim
23 words
A signal processing method according to Claim 8,
wherein, in said correlation value calculation step, a
complex digital filter is used for processing.
Claim 15
Dependent Claim
78 words
A provision medium for supplying a program to an
information processing apparatus which detects a reference
signal from an input signal, the apparatus being made to
execute a process in accordance with the program, the
process including: a correlation value calculation step of calculating a
value representing a correlation between the input signal
and the reference signal; and a comparison step of comparing the correlation value
calculated in said correlation value calculation step with a
predetermined threshold value.
References Cited (Backward Citations)
No citation records indexed.
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