Title:
DIGITAL SIGNAL REPRODUCER
Document Type and Number:
Japanese Patent JPS61237266
Kind Code:
A
Abstract:
PURPOSE:To restore a good analog signal during reproducing a digital signal by optionally changing a pulse duration of a pulse amplitude modulating signal when converting the digital signal into a analog signal. CONSTITUTION:A PCM signal recorded in a magnetic medium 11 is reproduced by a head 13, and the reproduced PCM signal 15 is inputted to a mono-multi 50 through an amplifier 17, a wave shape equalizing and shaping circuit 19, a digital signal processing circuit 21, and a D/A converting circuit 27. By adjusting and changing a resistance of a variable resistor added to the mono- multi 50, a pulse duration of an output signal 51 is changed. The signal 51 is inputted to a speaker through an LPF29 and an amplifier 33 and the sound is outputted. Since the mono-multi 50 changing the pulse duration is added, a good analog signal can be restored.
Inventors:
MASUI TOSHIYUKI
Application Number:
JP7839485A
Publication Date:
October 22, 1986
Filing Date:
April 15, 1985
Export Citation:
Assignee:
CANON KK
International Classes:
H03K9/02; G11B20/10; H03K5/04; (IPC1-7): G11B20/10; H03K5/04; H03K9/02
Attorney, Agent or Firm:
Hiroyuki Niwa