发明名称 |
Optical disc audio reproduction device having track playback monitoring system |
摘要 |
Apparatus and method for monitoring audio track playbacks by an optical disc audio reproduction device. A track number corresponding to an audio track encoded on an optical disc is selected to initiate playback of the selected audio track and a corresponding track number is stored in a first memory device. A series of data frames, each having an audio data block and a non-audio subcode block containing a single Q data bit, which define the selected audio track are then read from the optical disc. The data frames are transmitted to a demodulator circuit where the non-audio subcode block is separated from the audio data block. The non-audio subcode block is then transmitted to a microprocessor where the single bit of Q data subcode from each frame is assembled into a Q data subcode block. A portion of the Q data subcode block which contains a UPC code identifying the optical disc is transmitted to a second memory device. The contents of the first and second memory device are then combined in a third memory device to provide a record of audio track playbacks performed by the optical disc audio reproduction device. |
申请公布号 |
AU6103094(A) |
申请公布日期 |
1994.08.29 |
申请号 |
AU19940061030 |
申请日期 |
1994.02.14 |
申请人 |
ROWAN T. HAMILTON |
发明人 |
ROWAN T. HAMILTON;REBECCA E HAMILTON |
分类号 |
G11B19/02;G11B27/00;G11B27/10;G11B27/11;G11B27/30 |
主分类号 |
G11B19/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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