CN102038500A - Method for outputting file and overlapping waveforms of electrocardiograph - Google Patents

Abstract

The invention discloses a method for outputting a file and overlapping waveforms of an electrocardiograph. The method comprises the following steps of: (1) longitudinally compressing the paper size in a memory to form a compression byte array, wherein a bit in the byte presents one output of a thermal head; (2) writing lattice characters to be output in the compression byte array; (3) overlapping the compression byte array and the waveforms data to form the output data of 1 or 0 needed by the thermal head and transmitting the output data to the thermal head; and (4) recording and printing by the thermal head according to the output data. The method provided by the invention can greatly decrease the memory occupied by the whole printing output method and fully overcomes the problem of excessive memory demand generated by memory DC (Dual Channel) direct drawing operation so that an electrocardiograph with small memory can also print and output waveform data on a large piece of paper.

Description

Electrocardiograph output file and waveform stacking method

Technical field

The present invention relates to a kind of recording/output method of electrocardiograph, particularly electrocardiograph output file and waveform stacking method.

Background technology

Current electrocardiograph generally is to adopt heat-sensitive recorder to carry out when the waveform to its detection writes down output.Heat-sensitive recorder be by selectively heat-sensitive paper really on the allocation heating produce corresponding figure, its required data when record and output provide with 1 or 0 form all.

Mostly present heat-sensitive recorder is to utilize the characteristic of GUI when printing output function, the cooperation by internal memory DC realizes.This method is by directly carry out to draw operating on internal memory DC, will finish the data that produced behind the figure then and pass on the monitor printout.This way of output is simple, convenient to be realized, but there is the shortcoming of inefficiency in it, and the size to internal memory also limits, particularly very high to the requirement of internal memory in unrestricted output procedure, under the less situation of machine internal memory, can not realize the monitor Wave data output of big paper well.For the multichannel electrocardiograph, because it generally all needs big paper to realize the complete documentation of multichannel ecg wave form, therefore the existing shortcoming of above-mentioned described heat-sensitive recorder print-out method can be more outstanding on the multichannel electrocardiograph.

Summary of the invention

For addressing the above problem, the invention provides a kind of electrocardiograph output file and waveform stacking method, the method can alleviate the size restriction to internal memory, can be implemented in the Wave data printout of carrying out big paper under the less situation of machine internal memory.

The technical scheme that the present invention is adopted for its problem of solution is:

Electrocardiograph output file and waveform stacking method may further comprise the steps:

(1) in internal memory with paper size laterally with 1 millimeter M byte, vertical 1 millimeter N byte is vertically compressed, and forms the packed byte array, an once output of representing thermal head in one of them byte;

(2) dot matrix character that will be to be exported laterally is written in the packed byte array by byte, vertical step-by-step;

(3) stack of packed byte array and Wave data forms thermal head needed 1 or 0 dateout, and this dateout is sent thermal head;

(4) thermal head writes down printing according to dateout.

Wherein, step (1) in internal memory with paper size laterally with 1 millimeter 8 byte, vertical 1 millimeter 1 byte is vertically compressed.

The invention has the beneficial effects as follows: the present invention is a prerequisite to export 1 or 0 required data of correct thermal head, paper size is carried out the compression of data, and according to the actual features of electrocardiograph, output procedure to dot matrix character and Wave data is optimized, make the committed memory of whole print-out method to reduce greatly, overcome the excessive problem of memory requirements that internal memory DC directly draws and operates and produce fully, make the Wave data printout that also can realize big paper in the less situation of machine internal memory, the advantage that the present invention brought is more obvious on multichannel (as 12 passages) electrocardiograph.

The specific embodiment

Electrocardiograph output file of the present invention and waveform stacking method may further comprise the steps:

(1) in internal memory with paper size laterally with 1 millimeter M byte, vertical 1 millimeter N byte is vertically compressed, form the packed byte array, each state of each byte is 0 or 1 in this packed byte array, represents the once output of thermal head, the numerical value of M and N can be different in different embodiment, in a preferred embodiment, M equals 8, N=1, be in the internal memory with paper size laterally with 1 millimeter 8 byte, vertical 1 millimeter 1 byte is vertically compressed;

(2) dot matrix character that will be to be exported laterally is written in the packed byte array by byte, vertical step-by-step, through the state on the corresponding positions of respective byte in the packed byte array after this step corresponding change can take place, purpose is to make can form corresponding dot matrix character when printing based on this state on printing paper;

(3) stack of packed byte array and Wave data forms thermal head needed 1 or 0 dateout, this dateout is sent thermal head, usually, synergetic process occurs in when the thermal head dateout, Wave data is to carry out layering and synergetic according to the walking speed of waveform and gain, and the combination of 1 or 0 dateout of being exported after this step of process has comprised whole features of required output dot matrix literal and Wave data;

(4) thermal head writes down printing according to dateout, can be had the printout result of literal and waveform on heat-sensitive paper accordingly, and the waveform on this printout result can adopt overlapping or nonoverlapping mode to arrange.

The advantage that the inventive method is brought is more obvious on the multichannel electrocardiograph, with 12 passage electrocardiographs is example, consider the quantity of its passage, must adopt big paper that its result who exports is carried out complete documentation, if it adopts the method for traditional direct internal memory DC to print output, so needed internal memory is very large, and therefore method of the present invention can address the above problem because committed memory can reduce greatly.

Claims (2)

1. electrocardiograph output file and waveform stacking method is characterized in that may further comprise the steps:

(1) in internal memory with paper size laterally with 1 millimeter M byte, vertical 1 millimeter N byte is vertically compressed, and forms the packed byte array, an once output of representing thermal head in one of them byte;

(2) dot matrix character that will be to be exported laterally is written in the packed byte array by byte, vertical step-by-step;

(3) stack of packed byte array and Wave data forms thermal head needed 1 or 0 dateout, and this dateout is sent thermal head;

(4) thermal head writes down printing according to dateout.

2. electrocardiograph output file according to claim 1 recording method, it is characterized in that step (1) in internal memory with paper size laterally with 1 millimeter 8 byte, vertical 1 millimeter 1 byte is vertically compressed.