H - Electricity – 04 – N
Patent
H - Electricity
04
N
350/97
H04N 5/60 (2006.01)
Patent
CA 1288508
ABSTRACT An apparatus and method are provided for receiving and reproducing stereo television sound. A transmitted television signal is received that contains a first component comprising the sum of first and second stereophonically related audio signals and a second component comprising the difference between the first and second stereophonically related audio signals. The first and second components are converted to produce a first sound carrier centered at a first intermediate frequency and a second sound carrier centered at a second intermediate frequency. The first component is detected from the first sound carrier at the first intermediate frequency. The second component is detected from the second sound carrier at the second intermediate frequency. The detected first and second components are combined to produce a left channel audio output and a right channel audio output. By using a standard intercarrier detector for the first (L+R) component and an independent FM detector for the second (L-R) component, distortion caused by interfering harmonics of the television horizontal line frequency with vertical scan frequency sidebands falling within the (L-R) subchannel is prevented. A second audio program ("SAP") signal can also be recovered using the independent FM detector to avoid such distortion.
526568
Marz Daniel J.
Robbins Clyde
General Instrument Corporation
Ridout & Maybee Llp
LandOfFree
Apparatus and method for stereo television sound does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for stereo television sound, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for stereo television sound will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1184609