While Compact Disc (CD) Players have gradually become popular, lower power, lower cost and higher performance are required. To solve these problems a signal processing circuit, pre-amplifier, digital to analog (D/A) converter and sample holding circuit have been developed. The pre-amplifier employs AM detection in order to obtain minimal tracking error by using a 3 spot optical pick up. A 1-chip signal processing LSI that includes a digital data strobe circuit and all other function circuits with a fewer number of parts and gives an adjustment free system, has been developed. The D/A converter employs the triple current integration method, so that a higher precision circuit is realized with a lower system clock frequency of 17MHz, distortion rate of 0.002%, 96dB SNR, 2-ch conversion time of 10 microseconds and +-5V power supply.:

Authors: Shibuya, Toshifumi; Arai, Takao; Nakagaki, Harushige; Iso, Yoshimi
Affiliation: Consumer Products Research Center, Hitachi, Ltd., Yokohama, JAPAN
AES Conference: 3rd International Conference: The Present and Future of Digital Audio (June 1985)
Paper Number: 3-023
Publication Date: June 1, 1985
Subject: Digital Audio

Click to purchase paper as a non-member or you can login as an AES member to see more options.

No AES members have commented on this paper yet.

Subscribe to this discussion

To be notified of new comments on this paper you can subscribe to this RSS feed. Forum users should login to see additional options.

Start a discussion!

If you would like to start a discussion about this paper and are an AES member then you can login here:
Username:
Password:

If you are not yet an AES member and have something important to say about this paper then we urge you to join the AES today and make your voice heard. You can join online today by clicking here.