Method of reproducing high-speed audio data by a CD-ROM player

Claim 1

A method of reproducing audio data recorded together with digital data in an optical disk for a CD-ROM player, wherein said CD-ROM player comprises an optical pick up device, a signal processing unit including an audio signal processing section and a CD-ROM data storage, said method comprising the steps of: receiving EFM demodulated data sent at a high speed one after the other into the signal processing unit; writing said received data into the CD-ROM data storage as an input buffer for the audio signal processing section; reading out simultaneously said written data from the CD-ROM data storage at a predetermined reproducing speed to transmit to the audio signal processing section; prohibiting the data writing operation while continuing a data reading operation to make empty addresses when all the addresses in the CD-ROM data storage are filled with the EFM data, and the writing operation turns around to reach the address which has not been read out yet; jumping the optical pick up device back for a certain pitch corresponding to a predetermined number of tracks of the optical disk to read in EFM data; and resuming the data writing operation into the CD-ROM data storage starting from the data which was not written due to the previous prohibition thereof when a predetermined number of vacant addresses is made in the CD-ROM data storage by the continued data reading operation which has been advanced during the period the data writing operation was stopped.

Claim 2

A method of reproducing audio data recorded together with digital data in an optical disk for a CD-ROM player, wherein said CD-ROM player comprises an optical pick up device, a signal processing unit including an audio signal processing section and a CD-ROM data storage, said method comprising the steps of: receiving EFM demodulated data sent at a high speed one after the other into the signal processing unit; writing said received data into the CD-ROM data storage as an input buffer for the audio signal processing section; reading out simultaneously said written data from the CD-ROM data storage at a predetermined reproducing speed to transmit to the audio signal processing section; prohibiting the data writing operation while continuing a data reading operation to make empty addresses when all the addresses in the CD-ROM data storage are filled with the EFM data, and the writing operation turns around to reach the address which has not been read out yet; jumping the optical pick up device back for a certain pitch corresponding to a predetermined number of tracks of the optical disk to read in EFM data; and resuming the data writing operation into the CD-ROM data storage starting from the data which was not written due to the previous prohibition thereof when a predetermined number of vacant addresses is made in the CD-ROM data storage by the continued data reading operation which has been advanced during the period the data writing operation was stopped.

Claim 6

A method of reproducing digital data recorded on an optical disk comprising the steps of: receiving first digital data from said optical disk faster than a predetermined reproducing speed; processing said first digital data in a first signal processing unit at a speed faster than said predetermined reproducing speed; providing a buffer memory for temporarily storing said received first digital data when said first signal processor is unable to accept said first digital data; receiving second digital data, which is recorded together with said first digital data on said optical disk, said second digital data being sequentially sent from said optical disk at a speed which is faster than said predetermined reproducing speed; writing said received second digital data into said buffer memory as an input buffer; reading out said written second digital data from said buffer memory at said predetermined reproducing speed and transmitting to a second digital signal processing unit; and reproducing said first digital signal at a speed which is faster than said predetermined reproducing speed and reproducing said second digital signal at a speed which corresponds to said predetermined reproducing speed.

Claim 7

A method of reproducing digital data recorded on an optical disk comprising the steps of: receiving first digital data from said optical disk faster than a predetermined reproducing speed; processing said first digital data in a first signal processing unit at a speed faster than said predetermined reproducing speed; providing a buffer memory for temporarily storing said received first digital data when said first signal processor is unable to accept said first digital data; receiving second digital data, which is recorded together with said first digital data on said optical disk, said second digital data being sequentially sent from said optical disk at a speed which is faster than said predetermined reproducing speed; writing said received second digital data into said buffer memory as an input buffer; reading out said written second digital data from said buffer memory at said predetermined reproducing speed and transmitting to a second digital signal processing unit; and reproducing said first digital signal at a speed which is faster than said predetermined reproducing speed and reproducing said second digital signal at a speed which corresponds to said predetermined reproducing speed.