System and method for error correction in high definition TV signal
AssigneesSony Corporation, Sony Electronics Inc.
InventorsKenichi Kawasaki, Ryuichi Iwamura
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Abstract
An input signal such as a HDTV signal is split into a primary signal, which can be decoded if desired, and an secondary signal, which can remain compressed. The primary signal may be delayed and then both signals are transmitted to a receiver. If no error in the primary signal is detected, the primary signal is used to display data. Otherwise, the secondary signal, which arrives before the primary signal and consequently which is available for substitution, is displayed.
Claims19
A system for error correction in a source signal, comprising:
- at least one source signal input;
- a first path electrically connected to the input and decoding the source signal and sending a decoded signal to a first encoder for generating a primary signal stream;
- a second path electrically connected to the input, the second path including a second encoder for generating an encoded compressed signal stream;
- and
- a multiplexer combining the encoded compressed signal stream with the primary signal stream for transmission thereof, whereby lost data in the primary signal stream can be replaced at a receiver by information in the encoded compressed signal stream.
A method for displaying data, comprising:
- transmitting first and second versions of the data to a receiver;
- and
- displaying information carried in the first version until errors above a threshold are detected in the first version, at which point displaying information carried in the second version.
A receiver of wirelessly transmitted data to be displayed, comprising:
- radio signal processing components for processing signals representing the data to be displayed, the signals including at least a first signal representing the data to be displayed and a second signal representing the data to be displayed;
- a delay component temporarily holding the second signal;
- and
- logic for determining whether the first signal violates an error condition, and if so, substituting information carried in the second signal for information affected by error in the first signal.
Dependencies are inferred from the claim text.