| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a pure digital medical amplifier for recording clinical or non-clinical biological signals to solve the problems of existing multi-stage amplifiers. <P>SOLUTION: The pure digital medical amplifier for recording clinic or non-clinic biological signals, includes: at least two impedance converters, wherein the input end of one impedance converter inputting high impedance biological signal and the input end of the other impedance converter inputting reference signal; an A/D converter, wherein the input end is connected to the output end of the impedance converter; and a digital signal processor, wherein the input end receives the digital biological signal output from the A/D converter to control, process and output the biological signal according to a preset control program or a user's control command. The invention has a simple circuit structure and yields low internal noise, no distortion of output signal, high interference rejection capability, or the like, and used for recording biological signals in various frequency ranges. <P>COPYRIGHT: (C)2009,JPO&INPIT |
