Reproduction of audio data from recording medium
AssigneeYamaha Corporation
InventorsKazunobu Fujiwara, Tadashi Sugiyama, Sadayuki Narusawa
Life of this patent
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Abstract
The present invention provides an audio data recording medium reproducer, wherein CPU 10 which writes audio data read by reader 11 into buffer memory 13 and buffer memory controller 21 which transfers the data to buffer memory 22 and inputs it into DAC 23 at a predetermined data rate are connected by a bus, and furthermore, CPU 20 for controlling a user interface is separately provided. Provision of a plurality of such simple controllers reduces costs to be lower than in the case of providing one high-performance controller. Furthermore, it also becomes possible to separately construct the respective functional parts as units.
Claims5
An audio data recording medium reproducer comprising:
- a medium reader for reading-out digital audio data at a speed faster than the audio data reproducing rate from a medium into which the data has been recorded;
- a first buffer memory for buffering the data read by the medium reader;
- a first controller for controlling the medium reader and controlling reading and writing of the first buffer memory;
- a second buffer memory for buffering data transferred from the first buffer memory;
- a DA converter which receives digital data from the second buffer memory and converts the data into analog audio signals;
- and
- a second controller for controlling reading and writing of the second buffer memory, wherein
- the first controller and second controller are connected via an interface.
An audio data recording medium reproducer comprising:
- a medium reader for reading-out digital audio data from a medium, into which the data has been recorded, at a speed faster than the audio data normal reproducing rate;
- a first buffer memory for buffering data read by the medium reader;
- a first controller for controlling the medium reader and controlling reading and writing of the first buffer memory;
- a second buffer memory for buffering data transferred from the first buffer memory;
- a DA converter which receives data from the second buffer memory and DA-converts it into analog audio signals for normal speed reproduction;
- and
- a second controller for controlling reading and writing of the second buffer memory, wherein
- the first controller and second controller are connected via an interface, and data transfer between the first buffer memory and second buffer memory is intermittently performed.
Dependencies are inferred from the claim text.