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EP0453108A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Player for audio disk and memory disk

Assignee: Pioneer Corp
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Filing: 1991-03-27
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Granted: —
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Expires: 2011-03-27
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Abstract

Abstract At the time of playing a disk (2), TOC information in a lead-in area will be read out first after loading of the disk (2) is complete. The player (1) determines whether the disk (2) to be played is an audio disk (CD) or a memory disk (CD-ROM) based on identifying information in the TOC information. If the disk (2) is the memory disk the operation goes directly to a pause mode so that upon reception of a read command transition to the searching for a designated address is promptly executed to quickly read out the desired data. Only when the disk (2) being played is the audio disk, the audio system is changed to the audio disk from another source, thus permitting a user to view a map while listening to the previous source. When playing for an area having a series of group information recorded is complete in special play mode, the mode is quickly changed to the pause mode in the case of the memory disk to wait for the read command, thus ensuring quick reading of designated map data. If the disk discrimination result indicates the memory disk a muting process is performed to inhibit a sound generation from a loudspaker. If in this case there are operation commands originating from erroneous confirmation by the user, at least one of the commands is ignored. Further, transimission of a digital signal acquired by an EFM demodulator (9) to a signal processor including a D/A converter (12) is cut off, thus preventing electirc power from being wastefully consumed in the D/A converter (12).

Inventors

  • 👤 Kiyoshi Pioneer Electronic Corporation Furukawa
  • 👤 Yoichi Pioneer Electronic Corporation Yamazaki
  • 👤 Fumio Pioneer Electronic Corporation Endo
  • 👤 Akira Pioneer Electronic Corporation Hayama
  • 👤 Toshiyuki Pioneer Electronic Corporation Kimura
  • 👤 Junichi Pioneer Electronic Corporation Nishida
  • 👤 Hitoshi Pioneer Electronic Corporation Sato
  • 👤 Kenji Pioneer Electronic Corporation Kaneko

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-03 22:45
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/10; G11B19/00; G11B19/02; G11B19/12; G11B19/20; G11B27/00; G11B27/10; G11B27/102; G11B27/105; G11B27/11; G11B27/19; G11B27/28; G11B27/32; G11B27/327; G11B27/329; G11B27/34; G11B7/00; G11B7/002; G11B7/0037; G11B2220/00; G11B2220/20; G11B2220/21; G11B2220/213; G11B2220/25; G11B2220/2537; G11B2220/2545; G11B2220/60; G11B2220/65

Claims Analysis

Total Claims: 11
Claim 1
Independent Claim 102 words
An audio disk/memory disk player capable of playing both an audio disk and a memory disk, comprising: means for performing such control as to start playing a disk in response to a command; discriminating means for determining if a disk to be played is an audio disk or a memory disk; and means for performing such control as to play a music starting with a predetermined piece of music when the discriminating means judges that the disk to be played is the audio disk, and to set a pause mode when the disk to be played is judged as the memory disk.
Claim 2
Dependent Claim 29 words
An audio disk/memory disk player as claimed in Claim 1, wherein the discriminating means determines the disk based on information read out from a lead-in area on the disk.
Claim 3
Dependent Claim 124 words
An on-vehicle multisource reproducing device including multiple audio sources having a disk player as one audio source and a selecting means for selecting one of reproduction signals from the audio sources and supplying the selected reproduction signal to a loudspeaker, the device comprising: means for detecting that loading a disk to a play position is complete and for generating a loading complete signal; control means for starting playing the disk in response to the loading complete signal; discriminating means for determining if the disk being played is an audio disk or a memory disk; and means for sending a selection command to the selecting means to select the reproduction signal from the disk player only when the disk is judged as the memory disk.
Claim 4
Dependent Claim 29 words
An on-vehicle multisource reproducing device as claimed in Claim 3, wherein the discriminating means determines the disk based on information read out from a lead-in area on the disk.
Claim 5
Dependent Claim 45 words
An on-vehicle multisource reproducing device as claimed in Claim 3, further comprising: an indicator; and drive means for starting blinking the indicator at the beginning of disk loading and changing the indicator from blinking to continuous lighting when discrimination by the discriminating means is complete.
Claim 6
Dependent Claim 26 words
An on-vehicle multisource reproducing device as claimed in Claim 3, further comprising a means for processing a reproduction signal from the disk player as image data.
Claim 7
Dependent Claim 113 words
An audio disk/memory disk player capable of playing both an audio disk and a memory disk, comprising: means for setting a special play mode; discriminating means for determining if a disk being played is an audio disk or a memory disk; detecting means for detecting that playing for a memory area of a series of group information is complete; and control means for performing such control that, with the special play mode set, the mode is changed to a pause mode at a time of playing the memory disk when the detecting means generates a detection output, and the special play mode is enabled only at a time of playing the audio disk.
Claim 8
Dependent Claim 26 words
An audio disk/memory disk player as claimed in Claim 7, wherein the special play mode is an auto repeat play mode or a random play mode.
Claim 9
Dependent Claim 49 words
An audio disk/memory disk player as claimed in Claim 7, wherein the series of group information is audio information for one piece of music in case of the audio disk, and is a group of map data corresponding to a sheet of map in case of the memory disk.
Claim 10
Dependent Claim 76 words
An audio disk/memory disk player operable in an operation mode corresponding an operation command, comprising: discriminating means for determining whether a disk being played is an audio disk or a memory disk; muting means for inhibiting transmission of an acquired reproduction signal to a loudspeaker when the discriminating means judges that the memory disk is being played; and means for ignoring at least one of operation commands based on a discrimination result from the discriminating means.
Claim 11
Dependent Claim 89 words
A digital disk player having signal reading means for reading an information signal by rotating a loaded digital disk, decoding means for decoding the information signal, and signal processing means for reproducing a digital signal from the decoding means as an audio signal, the player comprising: detecting means for detecting that the loaded disk is a memory disk; and stop means for stopping supply of the digital signal from the decoding means to the signal processing means when the detecting means detects that the disk is a memory disk.

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