Data slicer and receiver
AssigneeLapis Semiconductor Co., Ltd.
InventorTetsuaki Yotsuji
Life of this patent
Estimating the term…
Abstract
A data slicer for converting an envelope signal of an amplitude-modulated wave into a binary signal, comprises: an average level generation circuit configured to generate an average level of the envelope signal by averaging the envelope signal per time; a fixed voltage value generation circuit configured to generate a fixed voltage value; a reference level generation circuit configured to generate a reference level in accordance with the fixed voltage value and the average level of the envelope signal; and a comparison circuit configured to compare a signal level of the envelope signal with the reference level to output a result of the comparison as the binary signal.
Claims7
A data slicer for converting an envelope signal of an amplitude-modulated wave into a binary signal comprising:
- an average level generation circuit configured to generate an average level of said envelope signal by averaging said envelope signal per time;
- a fixed voltage value generation circuit configured to generate a fixed voltage value;
- a reference level generation circuit configured to generate a reference level in accordance with said fixed voltage value and said average level of said envelope signal;
- and
- a comparison circuit configured to compare a signal level of said envelope signal with said reference level to output a result of the comparison as said binary signal,
- wherein said reference level generation circuit generates said reference level by dividing said average level of said envelope signal and said fixed voltage value with a ratio m:n (m and n are natural numbers which are different from each other).
A receiver comprising:
- an antenna unit configured to receive a wireless signal whose amplitude is modulated;
- a detector configured to perform envelope detection to the received wireless signal to generate an envelope signal;
- and
- a data slicer configured to convert said envelope signal into a binary signal;
- and
- a demodulator configured to demodulate said wireless signal in accordance with said binary signal, wherein
- said data slicer includes:
- an average level generation circuit configured to generate an average level of said envelope signal by averaging said envelope signal per time;
- a fixed voltage value generation circuit configured to generate a fixed voltage value;
- a reference level generation circuit configured to generate a reference level in accordance with said fixed voltage value and said average level of said envelope signal;
- and
- a comparison circuit configured to compare a signal level of said envelope signal with said reference level to output a result of the comparison as the binary signal,
- wherein said reference level generation circuit generates said reference level by dividing said average level of said envelope signal and said fixed voltage value with a ratio m:n (m and n are natural numbers which are different from each other).
Dependencies are inferred from the claim text.