EP0426162A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A disk player
Assignee: Sharp Corp
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Filing: 1990-10-31
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Granted: —
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Expires: 2010-10-31
Abstract
Abstract A CD player having an improved level search function is disclosed. In a level search, the judgment whether or not an optical pickup can land again on the same song is done before the jump of the pickup. When it is judged that the pickup can land on the same song, the pickup jumps a predetermined number of tracks which is determined for each of selected songs depending upon the playing time of each song. When it is judged that the pickup cannot land on the same song, the pickup jumps to the beginning of the next programmed song so that unwilling playback of non-programmed songs can be avoided. In another CD player, it is successively judged whether or not the pickup can land again on the same song in level search, based on the playing time corresponding a predetermined number of tracks to be skipped. If the pickup can land on the same song, then the predetermined number of tracks are skipped. If the pickup cannot land on the same song, then it is skipped to the beginning of the next programmed song, whereby the pickup is prevented from landing on non-programmed songs. Therefore, level search can be accurately performed.
Inventors
- 👤 Yoichi Tabuchi
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 11:38
CPC Classifications
G; G11; G11B; G11B7/00; G11B7/08; G11B7/085; G11B7/08505; G11B21/00; G11B21/02; G11B21/08; G11B21/081; G11B21/083; G11B21/085; G11B27/00; G11B27/10; G11B27/102; G11B27/105; G11B27/11; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2537; G11B2220/2545; G11B2220/2587
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
146 words
In a disk player for reproducing information from a disk-like information recording medium (2) in which information is recorded in a plurality of sections of said medium and which has time-information related to the lengths of said sections, said disk player comprising a level search function (in 8, 10, 13) in which processes of reproduction and track jump of a reproducing head (1) are alternatingly conducted to detect the output level of information recorded in said recording medium, said disk player further comprises: reading means (10) for reading said time-information from said recording medium; determination means (11) for, depending upon time-information related to one of said sections, determining the degree of the track jump which is to be conducted in said one section; and level search means (14) for conducting the track jump with said determined degree and performing the level search in said one section.
Claim 2
Dependent Claim
146 words
In a disk player for reproducing information from a disk-like information recording medium (2) in which information is recorded in a plurality of sections of said medium and which has time-information related to the lengths of said sections, said disk player comprising a level search function (in 8, 10, 13) in which processes of reproduction and track jump of a reproducing head (1) are alternatingly conducted to detect the output level of information recorded in said recording medium, said disk player further comprises: reading means (10) for reading said time-information from said recording medium; determination means (11) for, depending upon time-information related to one of said sections, determining the degree of the track jump which is to be conducted in said one section; and level search means (14) for conducting the track jump with said determined degree and performing the level search in said one section.
Claim 3
Dependent Claim
33 words
A disk player according to claim 1, wherein said disk player sfurther comprises memory means for storing the designations of selected ones of said sections from which ones information is to be reproduced.
Claim 4
Dependent Claim
43 words
A disk player according to claim 2, wherein said determination means determine the degree of the track jump which is to be conducted in each of said selected sections; and said level search means perform the level search sequentially in said selected sections.
Claim 5
Dependent Claim
22 words
A disk player according to claim 1, wherein said degree of the track jump is the number of tracks to be jumped.
Claim 6
Dependent Claim
24 words
A disk player according to claim 1, wherein said information is two or more pieces of music which are respectively recorded in said sections.
Claim 7
Dependent Claim
218 words
In a disk player for reproducing information from a disk-like information recording medium in which information is recorded in a plurality of sections of said medium and which has time-information related to the lengths of said sections, said disk player comprising a level search function in which processes of reproduction and track jump of a reproducing head are alternatingly conducted to detect the output level of information recorded in said recording medium, said disk player further comprises: memory means for storing the designations of selected ones of said sections from which ones information is to be reproduced; reading means for reading said time-information related to said selected sections, from said recording medium; determination means for determining the degree of the track jump which is to be conducted in each of said selected sections; level search means for conducting the track jump with said determined degree and performing the level search sequentially in said selected sections; judging means for judging whether or not the next track jump with said determined degree can be conducted within the section where the level search is conducted; and long jump means for, when said judging means judges that the next track jump cannot be conducted within said one section, conducting a jump of said reproducing head to the beginning of the next section.
Claim 8
Dependent Claim
218 words
In a disk player for reproducing information from a disk-like information recording medium in which information is recorded in a plurality of sections of said medium and which has time-information related to the lengths of said sections, said disk player comprising a level search function in which processes of reproduction and track jump of a reproducing head are alternatingly conducted to detect the output level of information recorded in said recording medium, said disk player further comprises: memory means for storing the designations of selected ones of said sections from which ones information is to be reproduced; reading means for reading said time-information related to said selected sections, from said recording medium; determination means for determining the degree of the track jump which is to be conducted in each of said selected sections; level search means for conducting the track jump with said determined degree and performing the level search sequentially in said selected sections; judging means for judging whether or not the next track jump with said determined degree can be conducted within the section where the level search is conducted; and long jump means for, when said judging means judges that the next track jump cannot be conducted within said one section, conducting a jump of said reproducing head to the beginning of the next section.
Claim 9
Dependent Claim
22 words
A disk player according to claim 6, wherein said degree of the track jump is the number of tracks to be jumped.
Claim 10
Dependent Claim
24 words
A disk player according to claim 6, wherein said information is two or more pieces of music which are respectively recorded in said sections.
Claim 11
Dependent Claim
56 words
A disk player according to claim 6, wherein said determination means determine the degree of track jump which is to be conducted in one selected section depending upon said time-information related to said selected section, the elapsed period of time for said selected section, and the period of time corresponding said degree of the track jump.
References Cited (Backward Citations)
No citation records indexed.
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