Title:
MULTICHANNEL TELEVISION SOUND STEREO AND SURROUND SOUND ENCODER
Document Type and Number:
WIPO Patent Application WO1998035495
Kind Code:
A8
Abstract:
The present invention provides method and apparatus for transmitting stereo and surround sound information of the L-R signal without excessive attenuation at the higher frequencies in order to allow transmission of surround sound through a noisy medium. The apparatus includes an audio breakout matrix (20) coupled to receive a left (12) and a right (14) audio inputs; a surround sound conditioner (22) coupled to receive a L-R signal portion of the television signal for pre-emphasizing and companding the L-R signal to produce a conditioned L-R signal; a mixer (26) coupled to the surround sound conditioner for switching the conditioned L-R signal at a predetermined value to produce an amplitude modulated L-R signal; and a synchronizing circuitry (24, 29) coupled to the mixer for maintaining the predetermined value in step with the reference value, wherein the mixed L-R signal is combined with a L+R signal portion of the television signal to produce a composite output signal (18).
Inventors:
AVALOS SEALTIEL
KAYLOR KEN
KAYLOR ROBERT
KESSLER ROBERT
KAYLOR KEN
KAYLOR ROBERT
KESSLER ROBERT
Application Number:
PCT/US1998/002502
Publication Date:
April 15, 1999
Filing Date:
February 09, 1998
Export Citation:
Assignee:
CABLE ELECTRONICS INC (US)
International Classes:
G11B27/10; G11B27/28; H04N5/40; H04B1/62; H04H20/89; H04N5/60; H04N7/08; H04N7/081; H04S3/00; H04N5/14; H04H5/00; (IPC1-7): H04N7/04; H04N7/00
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