Patent US6366545B2 successfully refreshed from Google Patents.
US6366545B2
Expired / Lapsed
US
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Reproducing and recording apparatus, decoding apparatus, recording apparatus, reproducing and recording method, decoding method and recording method
Assignee: Sony Corp
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Filing: 2001-05-15
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Granted: 2002-04-02
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Expires: 2021-05-15
Abstract
Abstract A reproducing and recording apparatus, a decoding apparatus, a recording apparatus, a reproducing and recording method, a decoding method and a recording method are provided in which a computation for changing acoustic characteristics of compressed digital data is effected on a scale factor of each divided band in the compressed digital data including spectrum data band-divided into a plurality of bands on a frequency axis and the scale factor of every divided band.
Inventors
- 👤 Tomohiro Koyata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:34
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B20/00007; G11B20/10527; G11B2020/00014; G11B7/00; G11B7/004
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
163 words
A recording apparatus comprising: MDCT means for processing an inputted digital signal on a time axis in a MDCT fashion to provide spectrum data on a frequency axis; scale factor calculating means for calculating a scale factor of every divided band for normalization by band-dividing said spectrum data on the frequency axis; data compressing means for providing compressed data including a scale factor of every divided band and spectrum data by compressing the spectrum data on said frequency axis calculated by said scale factor calculating means; computation means for receiving compressed digital data including the scale factor of said every divided band and spectrum data from said data compressing means and effecting a computation for changing acoustic characteristics of said compressed digital data on the scale factor of said every divided band; and recording means for recording said compressed digital data in which acoustic characteristics are changed when said computation means computes the scale factor of said every band on a recording medium.
Claim 2
Dependent Claim
163 words
A recording apparatus comprising: MDCT means for processing an inputted digital signal on a time axis in a MDCT fashion to provide spectrum data on a frequency axis; scale factor calculating means for calculating a scale factor of every divided band for normalization by band-dividing said spectrum data on the frequency axis; data compressing means for providing compressed data including a scale factor of every divided band and spectrum data by compressing the spectrum data on said frequency axis calculated by said scale factor calculating means; computation means for receiving compressed digital data including the scale factor of said every divided band and spectrum data from said data compressing means and effecting a computation for changing acoustic characteristics of said compressed digital data on the scale factor of said every divided band; and recording means for recording said compressed digital data in which acoustic characteristics are changed when said computation means computes the scale factor of said every band on a recording medium.
Claim 3
Dependent Claim
30 words
A recording apparatus as claimed in claim 1 , wherein said compressed digital data is volume-controlled by uniformly effecting a computation on all scale factors of said very divided band.
Claim 4
Dependent Claim
32 words
A recording apparatus as claimed in claim 1 , wherein said compressed digital data is filter-processed by effecting a computation on at least one of scale factors of said every divided band.
Claim 5
Dependent Claim
55 words
A recording apparatus as claimed in claim 1 , wherein compressed digital data of a predetermined period is relatively changed with respect to compressed digital data of other period and recorded by effecting a computation for changing the acoustic characteristics of said compressed digital data relative to said compressed digital data of said predetermined period.
Claim 6
Dependent Claim
55 words
A recording apparatus according to claim 1 , further comprising level analyzing means for analyzing level information of said compressed digital data and wherein said computation means effects a computation for changing said acoustic characteristics in accordance with analyzed results of said level analyzing means to thereby limit the level of said compressed digital data.
Claim 7
Dependent Claim
148 words
A recording method comprising the steps of: transforming an inputted digital signal on a time axis into spectrum data on a frequency axis in an MDCT fashion; calculating a scale factor of every divided band for normalization by band-dividing spectrum data on said frequency axis into a plurality of bands; providing compressed digital data including a scale factor of every divided band and spectrum data by compressing said band-divided spectrum data on said frequency axis in response to said calculated scale factor of every divided band; receiving compressed digital data including the scale factor of said every divided band and spectrum data and effecting a computation for changing acoustic characteristics of said compressed digital data on the scale factor of said every divided band; and recording said compressed digital data whose acoustic characteristics are changed on a recording medium by computing the scale factor of said every band.
Claim 8
Dependent Claim
148 words
A recording method comprising the steps of: transforming an inputted digital signal on a time axis into spectrum data on a frequency axis in an MDCT fashion; calculating a scale factor of every divided band for normalization by band-dividing spectrum data on said frequency axis into a plurality of bands; providing compressed digital data including a scale factor of every divided band and spectrum data by compressing said band-divided spectrum data on said frequency axis in response to said calculated scale factor of every divided band; receiving compressed digital data including the scale factor of said every divided band and spectrum data and effecting a computation for changing acoustic characteristics of said compressed digital data on the scale factor of said every divided band; and recording said compressed digital data whose acoustic characteristics are changed on a recording medium by computing the scale factor of said every band.
Claim 9
Dependent Claim
30 words
A recording method as claimed in claim 6 , wherein said compressed digital data is volume-controlled by uniformly effecting a computation on all scale factors of said every divided band.
Claim 10
Dependent Claim
31 words
A recording method according to claim 6 , wherein said compressed digital data is filter-processed by effecting a computation on at least one of scale factors of said every divided band.
Claim 11
Dependent Claim
55 words
A recording method as claimed in claim 6 , wherein compressed digital data of a predetermined period is relatively changed with respect to compressed digital data of another period and recorded by effecting a computation for changing the acoustic characteristics of said compressed digital data relative to said compressed digital data of said predetermined period.
Claim 12
Dependent Claim
50 words
A recording method as claimed in claim 6 , further comprising the step of analyzing level information of said compressed digital data; and wherein said computation changes said acoustic characteristics in accordance with the results of analyzing said level information to thereby limit the level of said compressed digital data.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2005-04-01 | 2005-10-01 | 2006-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2009-04-01 | 2009-10-01 | 2010-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2013-04-01 | 2013-10-01 | 2014-04-02 | $7700.00 | Window Closed / Lapsed |