Basic encoding and decoding unit, and codec

Abstract

The invention discloses a basic encoding and decoding unit, and a codec. The basic encoding and decoding unit comprises two identical logic circuits, and the two logic circuits are respectively used for encoding and decoding; and the logic circuit comprises the same number of input pins and output pins, and a plurality of XOR gates. The basic encoding and decoding unit in an encoding circuit provided by the invention can use the same circuit for encoding and decoding, thereby reducing the complexity of the circuit design and the manufacturing cost. During digital communication, the parity of the data is not changed in the case of bit flipping, so that a receiver can directly perform parity check on the encoded data, and directly discard the data when the check fails, thereby avoiding decoding invalid data that are flipped to waste the computing resources.

Description

technical field [0001] The present application relates to the field of codec technology, and in particular to a basic codec unit and a codec. Background technique [0002] At present, digital circuits have been widely used. Encoding of raw information is often required for purposes of information hiding, error checking, etc. The coding algorithm can be realized by software program or by hardware circuit. Software implementation of encoding algorithms has higher flexibility, but the required computing time and power consumption are usually much higher than hardware encoding circuits. In power-sensitive applications such as the Internet of Things, it is often necessary to use hardware circuits for encoding. In the hardware implementation of information hiding encoding in the prior art, usually different circuits are required for the encoding function and the decoding function, which increases the complexity of circuit design and manufacturing cost. On the other hand, the e...

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Problems solved by technology

In the hardware implementation of information hiding coding in the prior art, usually different circuits are required for the coding function and the decoding function, which increases the complexity of circuit design and manufacturing cost

On the other hand, the encoded data usually cannot maintain the parity of the original data (that is, when there is an odd number of 1s in the original data, there may be an odd number of 1s or an even number of 1s in the encoded data). After all are received and decoded, the parity check can be used to determine whether a bit flip has occurred. If it is found that a bit flip has occurred, computing resources will be wasted

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