Patent EP0277019A2 successfully refreshed from Google Patents.
EP0277019A2
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EP
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Disk playing method and device
Assignee: Pioneer Corp
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Filing: 1988-01-28
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Granted: —
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Expires: 2008-01-28
Abstract
Abstract A method and apparatus for playing a composite disk containing separate audio-only and video-plus-audio portions (1a,1b) in which the time until the commencement of the playing of the video-plus-audio portion is reduced by determining when playing of only the video-plus-audio portion is designated, and moving a data detection point of the pickup immediately toward the lead-in area of that portion, whereupon reproduction is started immediately. In another embodiment, index data is directly read from the lead-in area of the video-plus-audio portion without reading similar data for the audio-only portion. When the playing of the video-plus-audio portion is completed, the pickup is stopped at a rest position corresponding to the lead-in area of the second region.
Inventors
- 👤 Hidehiro C/O Pioneer Electronic Corporation Ishii
- 👤 Junichi C/O Pioneer Electronic Corporation Yoshio
- 👤 Osamu C/O Pioneer Electronic Corporation Watanabe
- 👤 Takeshi C/O Pioneer Electronic Corporation Izumo
- 👤 Noriyoshi Pioneer Electronic Corporation Takeya
- 👤 Kazuhiko Pioneer Electronic Corporation Katakami
- 👤 Masayori Pioneer Electronic Corporation Shinohara
- 👤 Masao C/O Pioneer Electronic Corporation Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 16:59
CPC Classifications
H; H04; H04N; H04N9/00; H04N9/79; H04N9/80; H04N9/802; G; G11; G11B; G11B19/00; G11B19/02; G11B19/12; G11B19/20; G11B19/28; G11B20/00; G11B27/00; G11B27/002; G11B27/10; G11B27/102; G11B27/105; G11B27/19; G11B27/28; G11B2220/00; G11B2220/20; G11B2220/25; G11B2220/2537; G11B2220/2545
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
96 words
A method for playing a data recording disk (1) having a first region (1a) in which only a digital signal is recorded and a second region (1b) in which a frequency modulated video signal and a digital signal are recorded in multiplexed form; characterized by determining when only the second region (1b) is designated for playing; and when only the second region is designated for playing, immediately moving the data detection point of a pickup (3) towards a lead-in area of the second region and thereafter starting reading data from the lead-in area of the disk.
Claim 2
Independent Claim
96 words
A method for playing a data recording disk (1) having a first region (1a) in which only a digital signal is recorded and a second region (1b) in which a frequency modulated video signal and a digital signal are recorded in multiplexed form; characterized by determining when only the second region (1b) is designated for playing; and when only the second region is designated for playing, immediately moving the data detection point of a pickup (3) towards a lead-in area of the second region and thereafter starting reading data from the lead-in area of the disk.
Claim 3
Dependent Claim
59 words
The method of claim 1, further characterized by attempting to read table-of-contents information recorded in the lead-in region, when the pickup (3) reaches the lead-in area of the second region (1b), and if no table-of-contents information can be read from the lead-in area, terminating playing of the second region and moving the pickup to play the first region (1a).
Claim 4
Dependent Claim
119 words
A spindle servo device for a data recording disk reproducing apparatus in which a spindle motor (102) rotationally drives the disk and for reproducing a disk having a region (1b) in which a frequency modulated video signal and a prescribed digital signal are recorded in multiplex form in a location extending at least partially in the radial direction of the disk; characterized by means (155) for detecting a phase difference between a synchronizing signal contained in a reproduced digital signal and a reference signal (153); means (155) for generating a control signal based on the detected phase difference; and means (111) for controlling the rotational speed of a spindle motor driving the disk in accordance with the control signal.
Claim 5
Dependent Claim
119 words
A spindle servo device for a data recording disk reproducing apparatus in which a spindle motor (102) rotationally drives the disk and for reproducing a disk having a region (1b) in which a frequency modulated video signal and a prescribed digital signal are recorded in multiplex form in a location extending at least partially in the radial direction of the disk; characterized by means (155) for detecting a phase difference between a synchronizing signal contained in a reproduced digital signal and a reference signal (153); means (155) for generating a control signal based on the detected phase difference; and means (111) for controlling the rotational speed of a spindle motor driving the disk in accordance with the control signal.
Claim 6
Dependent Claim
137 words
The spindle servo device of claim 3, further comprising means for indicating whether said disk is a compact disk or a composite disk, and if said disk is a composite disk, whether a portion being played is a first region containing only audio data or a second region, which is said region in which a frequency modulated video signal and a prescribed digital signal are recorded in multiplex form; and means for providing said reference signal as a fixed frequency signal when said indicating means indicates said disk is a compact disk or first region of a composite disk and as a variable frequency when said disk is a composite disk and a portion being played is said second region, said variable frequency being determined in accordance with a frame sync signal contained in said reproduced signal.
Claim 7
Independent Claim
159 words
A method for playing a composite data recording disk having a first region (1a) in which only a digital data signal is recorded and a second region (1b) in which a video data signal and a digital signal are recorded in superimposed form, in which index data indicative of recording contents is recorded in a lead-in area of each of the first and second regions, characterized by detecting when a play designation of only the second region of said composite data recording disk is detected; and when play designation of only the second region is detected, directly reading the index data from the lead-in area of the second region with a pickup (3) without reading the index data from the lead-in area of said first region; detecting when playing of the second region is terminated; and when playing of the second region is terminated, stopping the pickup at a position corresponding to the lead-in area of the second region.
Claim 8
Independent Claim
159 words
A method for playing a composite data recording disk having a first region (1a) in which only a digital data signal is recorded and a second region (1b) in which a video data signal and a digital signal are recorded in superimposed form, in which index data indicative of recording contents is recorded in a lead-in area of each of the first and second regions, characterized by detecting when a play designation of only the second region of said composite data recording disk is detected; and when play designation of only the second region is detected, directly reading the index data from the lead-in area of the second region with a pickup (3) without reading the index data from the lead-in area of said first region; detecting when playing of the second region is terminated; and when playing of the second region is terminated, stopping the pickup at a position corresponding to the lead-in area of the second region.
Claim 9
Dependent Claim
54 words
The method of claim 5, further comprising the initial steps of: detecting whether or not the disk is a composite disk; and when the disk is a composite disk, immediately moving the pickup to the lead-in area of the second region, and otherwise moving the pickup to the lead-in area of the first region.
Claim 10
Dependent Claim
57 words
The method of claim 5, further comprising the steps of: determining whether the index data of the lead-in area of the second region indicates that the disk is a composite disk; and, if the disk index data indicates that the disk is not a composite disk, moving the pickup to the lead-in area of the first region.
Claim 11
Dependent Claim
214 words
A reproducing method for a disk reproducing device capable of reproducing a data recording disk having a first region (1a) in which only a first digital signal is recorded and a second region (1b) in which a frequency modulated video signal and a second digital signal are recorded in a superimposed manner, the device having a plurality of accommodating positions for accommodating plural disks (D₁...D N ) and detection means for detecting when a data detection point of a pickup reaches a position in the vicinity of a boundary of the first and second regions and generating a detection signal at that instant, the method comprising the steps of: selecting one (D x ) the plurality of data recording disks accommodated in said plurality of accommodating positions; conveying the selected disk to a reproducing position; immediately moving the data detection point of the pickup (405) to a position on the disk corresponding to a predetermined portion within the second region in response to the detection signal; judging whether an output of the pickup contains predetermined data recorded in the predetermined portion within the second region; and after reproducing recording data from the entirety of the second region in accordance with the result of the judgment, selecting another data recording disk to be subsequently reproduced.
Claim 12
Dependent Claim
214 words
A reproducing method for a disk reproducing device capable of reproducing a data recording disk having a first region (1a) in which only a first digital signal is recorded and a second region (1b) in which a frequency modulated video signal and a second digital signal are recorded in a superimposed manner, the device having a plurality of accommodating positions for accommodating plural disks (D₁...D N ) and detection means for detecting when a data detection point of a pickup reaches a position in the vicinity of a boundary of the first and second regions and generating a detection signal at that instant, the method comprising the steps of: selecting one (D x ) the plurality of data recording disks accommodated in said plurality of accommodating positions; conveying the selected disk to a reproducing position; immediately moving the data detection point of the pickup (405) to a position on the disk corresponding to a predetermined portion within the second region in response to the detection signal; judging whether an output of the pickup contains predetermined data recorded in the predetermined portion within the second region; and after reproducing recording data from the entirety of the second region in accordance with the result of the judgment, selecting another data recording disk to be subsequently reproduced.
Claim 13
Dependent Claim
102 words
Apparatus for reproducing data on a recording disk (1) having a first region (1a) in which only a digital signal is recorded and a second region (1b) in which a frequency modulated video signal and a digital signal are recorded in multiplexed form; characterized by means (21) for determining when only the second region (1b) is designated for playing; and when only the second region is designated for playing causing the data detection point of a pickup (3) to be moved immediately to a lead-in area of the second region and thereafter starting reading data from the lead-in area of the disk.
Claim 14
Dependent Claim
102 words
Apparatus for reproducing data on a recording disk (1) having a first region (1a) in which only a digital signal is recorded and a second region (1b) in which a frequency modulated video signal and a digital signal are recorded in multiplexed form; characterized by means (21) for determining when only the second region (1b) is designated for playing; and when only the second region is designated for playing causing the data detection point of a pickup (3) to be moved immediately to a lead-in area of the second region and thereafter starting reading data from the lead-in area of the disk.
References Cited (Backward Citations)
No citation records indexed.
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