US PATENT SUBCLASS 348 / 389
.~.~ Including one conventional or compatible channel (e.g., two channel NTSC systems)


Current as of: June, 1999
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348 /   HD   TELEVISION

384  DF  BANDWIDTH REDUCTION SYSTEM {7}
388  DF  .~ Multiple channel (e.g., plural carrier) {1}
389.~.~ Including one conventional or compatible channel (e.g., two channel NTSC systems)


DEFINITION

Classification: 348/389

Including one conventional or compatible channel (e.g., two channel NTSC systems):

(under subclass 388) Subject matter wherein one channel can be received and utilized by a normal receiver to provide a normal display.

(1) Note. Examples of signals included in the augmentation channels are: Side panels to expand the aspect ratio of the high definition display; high frequency information, both

horizontal and vertical; and extra audio information.

(2) Note. The second or additional channels are often referred to as augmentation channels and normally can not provide a display by themselves. Reception of all channels allows a high definition display.