Title:
【発明の名称】多重チャネル・テレビジョン音声ステレオおよびサラウンド・サウンド・エンコーダ
Document Type and Number:
Japanese Patent JP2002513529
Kind Code:
A
Abstract:
The present invention provides an apparatus that transmits the stereo and the 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 a surround sound conditioner 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 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 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. Furthermore, a method of transmitting stereo and surround sound in accordance with multichannel television sound protocol includes the steps of preconditioning a L-R signal; synchronizing the preconditioned L-R signal to a reference value to produce a synchronized L-R signal; and mixing the synchronized L-R signal with a L+R signal to produce a composite output signal.
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Inventors:
Avalos seal teal
Ken Kyler
Kyler robert
Kessler robert
Ken Kyler
Kyler robert
Kessler robert
Application Number:
JP53499298A
Publication Date:
May 08, 2002
Filing Date:
February 09, 1998
Export Citation:
Assignee:
Cable Electronics Incorporated
International Classes:
G11B27/10; G11B27/28; H04B1/62; H04H20/89; H04N5/40; H04N5/60; H04N7/08; H04N7/081; H04S3/00; H04N5/14; H04H5/00; (IPC1-7): H04B1/62; H04N5/40; H04N5/60; H04N7/08; H04N7/081
Attorney, Agent or Firm:
Nobuyuki Matsubara (2 others)