Decoding device capable of forwardly and backwardly reproducing

Details Decoding device capable of forwardly and backwardly reproducing Decoding device capable of forwardly and backwardly reproducing

1990-05-15

1991-01-22

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358135, H04N 712

Patent

active

049874900

ABSTRACT:
In a decoding device for decoding an input signal into a decoded signal, a delay circuit delays the decoded signal into a delayed signal with a delay equal to a frame period of a digital video signal which is encoded into an encoded signal by interframe predictive encoding. A forward filter of a predetermined filtering characteristic filters the delayed signal into a first filtered signal. An adder adds the input signal to the first filtered signal to produce an added signal. A subtracter subtracts the input signal from the delayed signal to produce a subtracted signal. An inverse filter filters the subtracted signal into a second filtered signal. Responsive to a mode signal, a selector selects one of the added and the second filtered signals to produce, as the decoded signal, the added and the second filtered signals when the mode signal indicates that the input signal is produced in a forward direction from a leading part to a trailing part of the encoded signal and when the mode signal indicates that the input signal is produced in a backward direction reversed relative to the forward direction, respectively. Another inverse filter may be inserted between the delaying circuit and the subtracter. In this case, the subtracter and the second filter are replaced in position with each other.

REFERENCES:
patent: 4897855 (1990-01-01), Acampora
patent: 4942465 (1990-07-01), Ohta
patent: 4942476 (1990-07-01), Koga et al.

Affiliated with

Also associated with

Rating

Decoding device capable of forwardly and backwardly reproducing does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Decoding device capable of forwardly and backwardly reproducing , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Decoding device capable of forwardly and backwardly reproducing will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1558285