Apparatus for carrying out automatic play in synchronism with playback of data recorded on recording medium

• US 5,313,011 A
• Filed: 11/22/1991
• Issued: 05/17/1994
• Est. Priority Date: 11/29/1990
• Status: Expired due to Term

• Current Assignee: Casio Computer Company Limited
• Original Assignee: Casio Computer Company Limited
• Inventors: Koguchi, Satoru
• Primary Examiner(s): Witkowski, Stanley J.
• Application Number:
  US07/796,456
• Time in Patent Office: 907 Days
• Field of Search: 84/609-614, 84/634-638
• US Class Current: 84/609
• CPC Class Codes: G10H 1/363 using optical disks, e.g. CD, CD-ROM, to store accompaniment information in digital form
• CPC Class Codes: G10H 2240/195 Reed-solomon error detection or correction, i.e. by considering the message symbols as polynomial coefficients
• CPC Class Codes: G11B 19/12 by sensing distinguishing features of or on records, e.g. diameter end mark
• CPC Class Codes: G11B 19/28 Speed controlling, regulating, or indicating G11B19/24 takes precedence
• CPC Class Codes: G11B 20/10527 Audio or video recording; Data buffering arrangements G11B20/12 - G11B20/18 take precedence
• CPC Class Codes: G11B 20/1217 on discs
• CPC Class Codes: G11B 2220/2545 CDs
• CPC Class Codes: G11B 27/005 Reproducing at a different information rate from the information rate of recording for television signals H04N5/783
• CPC Class Codes: G11B 27/105 of operating discs
• CPC Class Codes: G11B 27/3063 Subcodes
• CPC Class Codes: G11B 31/02 with automatic musical instruments
• CPC Class Codes: G11B 7/0037 with discs
• CPC Class Codes: H04H 60/04 Studio equipment; Interconnection of studios

Abstract

When a playback speed of a recording medium such as a compact disc (CD) or the like is changed, the change of this playback speed is reflected in a clock which controls a tempo of automatic play. In the background of music reproduced from the recording medium, playing data provided during the play is written in a memory (211) in a real time fashion. When the automatic play is carried out in accordance with the content stored in the memory (211), the present invention includes a mode (A) in which the changed state of the playback speed of the CD and the tempo/musical sound pitch states of automatic play are automatically reproduced in the same states as those in the recording timing point, and a mode (B) in which the playback speed of the CD is automatically returned to the original speed before being changed and the tempo/musical sound pitch states of automatic play are automatically changed in response thereto.

Claims

1. An apparatus for carrying out a reproduction of performance data in synchronism with a reproduction of automatic playing data by using a recording medium in which performance data is recorded, comprising:

reproducing means for driving said recording medium to reproduce said performance data;

automatic playing data storing means for storing a series of automatic playing data which is reproduced in synchronism with said performance data stored in said recording medium;

automatic playing means coupled to said automatic playing data storing means for reading said automatic playing data from said automatic playing data storing means to sequentially generate corresponding musical sound signals to thereby perform automatic play;

speed data storing means for storing reproducing speed data used when said performance data and said automatic playing data are reproduced in synchronism with each other; and

control means coupled to said reproducing means, to said automatic playing means and to said speed data storing means for controlling the reproduced condition of said performance data and said automatic playing data, and said control means including;

means for controlling a driving speed of said recording medium so that said performance data is reproduced at a set speed corresponding to said speed data stored in said speed data storing means; and

means for controlling a read-out speed of said automatic playing data from said automatic playing data storing means such that said automatic playing data is reproduced at a set speed corresponding to said speed data stored in said speed data storing means.

2. The apparatus according to claim 1, wherein:

said performance data recorded in said recording medium is audio data; and

said reproducing means drives said recording medium to reproduce said audio data so that said automatic playing data and said audio data are reproduced at a same reproducing speed in synchronism with each other under the control of said control means.

3. The apparatus according to claim 1, wherein:

said performance data recorded in said recording medium is audio data and image data; and

said reproducing means drives said recording medium to reproduce said audio data and said image data so that said automatic playing data, said audio data and said image data are reproduced at a same reproducing speed in synchronism with each other under the control of said control means.

4. The apparatus according to claim 1, wherein:

said performance data recorded in said recording medium is image data; and

said reproducing means drives said recording medium to reproduce said image data so that said automatic playing data and said image data are reproduced at a same reproducing speed in synchronism with each other under the control of said control means.

5. The apparatus according to claim 1, wherein:

said control means further includes clock generating means,

said clock generating means generates a clock signal used to determine a read-out speed of said automatic playing data from said automatic playing data storing means, and

a frequency of said clock signal is varied in response to said reproducing speed data stored in said speed data storing means.

6. The apparatus according to claim 1, wherein said speed data storing means stores input data inputted by the user as said reproducing speed data.

7. The apparatus according to claim 1, wherein said control means controls said reproducing means and said automatic playing means to selectively execute a first control operation for controlling the driving speed of said recording medium and a read-out speed of said automatic playing data from said automatic playing data storing means such that said performance data and said automatic playing data are reproduced at a same set speed in synchronism with each other corresponding to said reproducing speed data stored in said speed data storing means, and a second control operation for controlling the driving speed of said recording medium and the read-out speed of said automatic playing data from said automatic data storing means such that said performance data and said automatic playing data are reproduced at a predetermined normal speed in synchronism with each other.

8. The apparatus according to claim 1, wherein:

said performance data recorded in said recording medium is audio data,

said reproducing means drives said recording medium to reproduce said audio data,

a pitch of said reproduced audio data is changed in response to a reproducing speed,

said automatic playing means includes pitch varying means for varying a pitch of said musical sound signal, and

said control means controls said automatic playing means such that said automatic playing data and said audio data are reproduced at a same set speed in synchronism with each other, and said control means also controls said pitch varying means so that the pitch of said musical sound signal based on said automatic playing data is varied in response to the change of a pitch of said audio data.

9. The apparatus according to claim 1, wherein:

said performance data recorded in said recording medium is audio data,

said reproducing means includes pitch varying means for returning a reproducing pitch of said audio data to the original pitch by an amount changed in association with the reproducing speed, and

said control means controls said automatic playing means such that said automatic data and said audio data are reproduced at a same set speed in synchronism with each other.

10. An apparatus for carrying out a reproduction of performance data in synchronism with a reproduction of automatic playing data by using a recording medium in which performance data is recorded, comprising:

reproducing means for driving said recording medium to reproduce said performance data;

playing input means for carrying out a playing operation in unison with said performance data reproduced by said reproducing means to thereby output automatic playing data corresponding to the playing operation;

automatic playing data storing means for storing automatic playing data output from said playing input means;

automatic playing means coupled to said automatic playing data storing means for reading said automatic playing data from said automatic playing data storing means to sequentially generate corresponding musical sound signals to thereby perform automatic play;

speed data storing means for storing reproducing speed data used when said performance data and said automatic playing data are reproduced in synchronism with each other; and

control means coupled to said reproducing means, to said automatic playing means and to said speed data storing means for controlling the reproduced condition of said performance data and said automatic playing data, and said control means including;

means for controlling a driving speed of said recording medium so that said performance data is reproduced at a set speed corresponding to said speed data stored in said speed data storing means; and

means for controlling a read-out speed of said automatic playing data from said automatic playing data storing means such that said automatic playing data is reproduced at a set speed corresponding to said speed data stored in said speed data storing means.

11. The apparatus according to claim 10, wherein:

said performance data recorded in said recording medium is audio data; and

said reproducing means drives said recording medium to reproduce said audio data so that said automatic playing data and said audio data are reproduced at a same reproducing speed in synchronism with each other under the control of said control means.

12. The apparatus according to claim 10, wherein:

said performance data recorded in said recording medium is audio data and image data; and

said reproducing means drives said recording medium to reproduce said audio data and said image data so that said automatic playing data, said audio data and said image data are reproduced at a same reproducing speed in synchronism with each other under the control of said control means.

13. The apparatus according to claim 10, wherein:

said performance data recorded in said recording medium is image data; and

said reproducing means drives said recording medium to reproduce said image data so that said automatic playing data and said image data are reproduced at a same reproducing speed in synchronism with each other under the control of said control means.

14. The apparatus according to claim 10, wherein:

said control means further includes clock generating means, said clock generating means generates a clock signal used to determine a read-out speed of said automatic playing data from said automatic playing data storing means, and

a frequency of said clock signal is varied in response to the reproducing speed data stored in said speed data storing means.

15. The apparatus according to claim 10, wherein said speed data storing means stores input data inputted by the user as said reproducing speed data.

16. The apparatus according to claim 10, wherein said control means controls said reproducing means and said automatic playing means to selectively execute a first control operation for controlling the driving speed of said recording medium and a read-out speed of said automatic playing data from said automatic playing data storing means such that said performance data and said automatic playing data are reproduced at a same set speed in synchronism with each other corresponding to said reproducing speed data stored in said speed data storing means, and a second control operation for controlling the driving speed of said recording medium and the read-out speed of said automatic playing data from said automatic playing data storing means such that said performance data and said automatic playing data are reproduced at a predetermined normal speed in synchronism with each other.

17. The apparatus according to claim 10, wherein;

said performance data recorded in said recording medium is audio data,

said reproducing means drive said recording medium to reproduce said audio data,

a pitch of said reproduced audio data is changed in response to a reproducing speed,

said automatic playing means includes pitch varying means for varying a pitch of said musical sound signal, and

said control means controls said automatic playing means such that said automatic playing data and said audio data are reproduced at a same set speed in synchronism with each other, and said control means also controls said pitch varying means so that the pitch of said musical sound signal based on said automatic playing data is varied in response to the change of a pitch of said audio data.

18. The apparatus according to claim 10, wherein:

said performance data recorded in said recording medium is audio data,

said reproducing means includes pitch varying means for returning a reproducing pitch of said audio data to the original pitch by an amount changed in association with said reproducing speed, and said control means controls said automatic playing means such that said automatic playing data and said audio data are reproduced at a same set speed in synchronism with each other.

19. A reproducing method for carrying out a reproduction of performance data and a reproduction of automatic playing data in synchronism with each other by using a recording medium in which said performance data is recorded and an automatic playing data storing means in which said automatic playing data is stored, comprising the steps of:

storing reproducing speed data used when said performance data and said automatic playing data are reproduced in synchronism with each other;

controlling a playing speed of said recording medium such that said performance data is reproduced at a set reproducing speed corresponding to said stored reproducing speed data; and

a performance reproducing step which includes controlling a read-out speed of said automatic playing data from said automatic playing data storing means such that said automatic playing data is reproduced at a set reproducing speed corresponding to said stored reproducing speed data.

20. The reproducing method according to claim 19, wherein said performance data recorded in said recording medium comprises at least one of audio data and image data.

21. The reproducing method according to claim 19, wherein said reproducing speed data is input data input by the user as reproducing speed data.

22. The reproducing method according to claim 19, wherein:

said performance data recorded in said recording medium is audio data,

the pitch of said audio data is changed in association with said set reproducing speed, and

said performance reproducing step includes varying a pitch of a musical sound signal based on said automatic playing data in response to the change of pitch of said audio data.

23. The reproducing method according to claim 19, wherein:

said performance data recording in said recording medium is audio data, and

the pitch of said audio data is changed in association with said set reproducing speed,

said performance reproducing step includes returning the pitch of reproduced audio data to the original pitch by an amount changed in response to said set reproducing speed.

24. A reproducing method for carrying out a reproduction of performance data and a reproduction of automatic playing data in synchronism with each other by using a recording medium in which said performance data is recorded and an automatic playing data storing means in which said automatic playing data is stored, comprising the steps of:

playing said recording medium to reproduce said performance data so that said automatic playing data is sequentially stored in said automatic playing data storing means by the playing operation of said recording medium in unison with the reproduction of said performance data;

storing reproducing speed data used when said performance data and said automatic playing data are reproduced in synchronism with each other;

controlling a playing speed of said recording medium such that said performance data is reproduced at a set reproducing speed corresponding to said stored reproducing speed data;

a performance reproducing step which includes controlling a read-out speed of said automatic playing data from said automatic playing data storing means such that said automatic playing data is reproduced at a set reproducing speed corresponding to said stored reproducing speed data.

25. The reproducing method according to claim 24, wherein said performance data recorded in said recording medium comprises at least one of audio data and image data.

26. The reproducing method according to claim 24, wherein said reproducing speed data is input data input by the user as reproducing speed data.

27. The reproducing method according to claim 24, wherein:

said automatic playing data is stored in said automatic playing data storing means and playing speed data of said recording medium is stored at a timing point in which said playing operation is carried out in said automatic playing data storing means, and

said step of storing said reproducing speed data includes setting said playing speed data stored in said automatic playing data storing means as reproducing speed data to be used when said performance data and said automatic playing data are to be reproduced in synchronism with each other.

28. The reproducing method according to claim 24, wherein:

said performance data recorded in said recording medium is audio data,

the pitch of said audio data is changed in association with said set of reproducing speed, and

said performance reproducing step includes varying a pitch of a musical sound signal based on said automatic playing data in response to the change of the pitch of said audio data.

29. The reproducing method according to claim 24, wherein:

said performance data recorded in said recording medium is audio data,

the pitch of said audio data is changed in association with said set reproducing speed, and

said performance reproducing step includes returning the pitch of reproduced audio data to the original pitch by an amount changed in response to said set reproducing speed.