Compact Disc player and a compact disc

• US 6,088,318 A
• Filed: 08/26/1994
• Issued: 07/11/2000
• Est. Priority Date: 04/26/1991
• Status: Expired due to Fees

• Current Assignee: Yamaha Corporation
• Original Assignee: Yamaha Corporation
• Inventors: Sone, Takurou
• Primary Examiner(s): EDUN, MUHAMMAD N
• Application Number:
  US09/362,339
• Time in Patent Office: 2,146 Days
• Field of Search: 369/47, 369/48, 369/49, 369/50, 369/54, 369/58, 369/59, 369/60, 369/32, 360/48, 360/51, 360/53
• US Class Current: 369/53.31
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 20/1251 for continuous data, e.g. digitised analog information signals, pulse code modulated [PCM] data
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/3063 Subcodes
• CPC Class Codes: G11B 27/34 Indicating arrangements indicating means incorporated in magazine or cassette G11B23/046 and G11B23/0875; indicating measured values in general G01D
• CPC Class Codes: G11B 33/10 Indicating arrangements; Warning arrangements G11B15/04, G11B19/04, G11B27/34, G11B27/36 take precedence

Abstract

A Compact Disc player having a display device includes a reproducing circuit for reading out digital data which includes digital audio data and specific information recorded on a Compact Disc, a specific information identifying circuit for identifying both character code information and modifying information from the specific information, a character decoder for decoding the identified character code information to character information on the basis of code converting information such as ASCII character code information, and a modifying circuit for modifying the decoded character information on the basis of the identified modifying information. Thus, the Compact Disc player can display the character information modified by the modifying information on the display device. The Compact Disc player is also capable of displaying image information on the basis of image contour co-ordinates data recorded in a subcoding area of a Compact Disc.

Claims

1. A Compact Disc player capable of displaying character information comprising:

reproducing means for reading out digital data recorded on a compact disc, the digital data including digital audio data and specific information;

specific information identifying means for identifying specific information from digital data read out by said reproducing means, the specific information having character code information and character modifying information, the character modifying information being included in an escape sequence of a Q-channel information;

the specific information identifying means comprising converting means for converting the character code information into character information, and modifying means for modifying character information converted by said converting means on the basis of the character modifying information; and

display means for displaying character information modified by said character modifying means.

2. A Compact Disc player as defined in claim 1 further comprising audio signal reproducing means for identifying digital audio data from digital data read out by said reading means and generating an audio signal corresponding to the identified digital audio data.

3. A Compact Disc player as defined in claim 1 wherein said character code information comprises basic character code information.

4. A Compact Disc player as defined in claim 3 wherein said basic character code information consists of ASCII character code information.

5. A Compact Disc player as defined in claim 3 wherein said character code information further comprises optional character code information.

6. A Compact Disc player as defined in claim 1, wherein said escape sequence is provided only when it is necessary to modify character information.

7. A Compact Disc player as defined in claim 6 further comprising audio signal reproducing means for identifying digital audio data from digital data read out by said reading means and generating an audio signal corresponding to the identified digital audio signal.

8. A Compact Disc player as defined in claim 6 wherein said character code information comprises basic character code information.

9. A Compact Disc player as defined in claim 8 wherein said basic character code information consists of ASCII character code information.

10. A Compact Disc player as defined in claim 8 wherein said character code information further comprises optional character code information.

11. A Compact Disc player capable of displaying image information comprising:

image data reproducing means for reading out image contour co-ordinates data recorded in a subcoding region of a Compact Disc, the image contour coordinates data being for forming a contour of desired image information;

image information producing means for producing variable bit map data on the basis of image contour co-ordinates data from said image data reproducing means; and

display means for displaying variable image information corresponding to bit map data produced by said image information producing means.

12. A Compact Disc player as defined in claim 11 further comprising:

reproducing means for reading out digital audio data recorded on a compact disc; and

audio signal generating means for generating an audio signal corresponding to digital audio data read out by said reproducing means.

13. A Compact Disc player as defined in claim 11 further comprising:

reading means for respectively reading out digital audio data and specific information recorded on a Compact Disc; and

specific information identifying means for identifying specific information from digital data read out by said recorded data reproducing means, the specific information having character code information and character modifying information,

said specific information identifying means comprising converting means for converting the character code information into character information, and character modifying means for modifying character information converted by said converting means in accordance with the character modifying information; and

said display means for displaying the image information and character information modified by said character modifying means.

14. A Compact Disc player as defined in claim 11 further comprising:

reading means for respectively reading out digital audio data and specific information recorded on a compact disc;

audio signal generating means for identifying digital audio data from digital data read out by said recorded data reproducing means and generating an audio signal corresponding to the identified digital audio data;

specific information identifying means for identifying specific information from digital data read out by said recorded data reproducing means, the specific information having character code information and character modifying information,

said specific information identifying means comprising converting means for converting the character code information into character information, and character modifying means for modifying character information converted by said converted means in accordance with the character modifying information; and

said display means for displaying the image information and character information from said modifying means concurrent with generation of the audio signal by said audio signal generation means.

15. A Compact Disc player as defined in claims 11 wherein said image information consists of a train of co-ordinate points defining an image contour recorded in R to W subcodings.

16. A Compact Disc player as defined in claim 11 wherein the character modifying information is included in an escape sequence of Q-channel information whenever it is necessary to modify character information on the basis of character code information or display image information.

17. A Compact Disc wherein character code information and character modifying information for modifying a displayed character based on the character code information are recorded in a subcoding Q-channel data frame of a program region.

18. A Compact Disc as defined in claim 17 wherein said modifying information is included in an escape sequence of the subcoding Q-channel data frame.

19. A Compact Disc wherein variable image information in the form of image contour co-ordinates data is recorded on subcoding channels other than the Q-channel.

20. A Compact Disc as defined in claim 19 wherein the image information consists of a train of co-ordinate points defining an image contour recorded in R to W subcodings.