3909512 is referenced by 117 patents and cites 4 patents.

A sound information reproducing apparatus for use in a still picture broadcasting system, which comprises auxiliary memory means of small capacity, which is operated in such a way that writing-in the portion of the digitized sound information for description of a related still picture, which sound information is compressed with respect to the time base, and reading-out the contents stored in the auxiliary memory means are performed alternately. These alternate write-in and read-out operations are performed continuously over a frame of sound information, whereby the original sound information is reproduced.

Title
Sound information reproducing apparatus for use in a still picture broadcasting system
Application Number
05/403,967
Publication Number
3909512
Application Date
October 5, 1973
Publication Date
September 30, 1975
Inventor
Kubo Morihiro
Omori Yoshitaka
Agent
Staas & Halsey
Assignee
Sanyo Electric
IPC
H04N 05/78
H04N 07/04
H04N 01/00
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