JPH01104247A - Long-time electrocardiogram recording apparatus - Google Patents

Abstract

PURPOSE:To record and regenerate a long-time bio-signal without generating strain, by converting the bio-signal to a digital signal of a definite cycle and using a temporary recording means such as an IC memory in a state coexisting along with a large capacity recording medium such as a digital audiotape. CONSTITUTION:The input terminal IN of the bio-signal taken in through the electrode bonded to a human body is connected to an amplifier 01. The amplifier 01 is connected to an A/D converter 02 and the bio-signal amplified by said amplifier 01 is converted to a digital signal. A change-over device 12 changes over one recorder 106 to the other recorder 107 when the recording of the digital signal reaches predetermined quantity in the recorder 1 to continue recording. A processor 10 confirms that a predetermined quantity of recording is performed by the recorders 1, 2 through a counter 108 or 109 and the recorders are changed over by the change-over device 12 to continue recording. Next, the digital signals of the recorders 1, 2 performing a predetermined quantity of recording and recording is performed to a digital signal recording means 05 in succession to the region where the previous recording is finished.

Description

[Detailed description of the invention] The present invention relates to a long-term biological signal recording device.

Conventionally, long-term biosignal recording devices have recorded biosignals on tape recorders, but in order to perform long-term recording, it was necessary to slow down the running speed of the tape. However, it has been pointed out that it is difficult for a tape recorder to maintain a constant speed when the running speed is slowed down, and that the reproduced waveform when biological signals are recorded is greatly distorted.

The present invention was proposed in view of the above problem, and converts a biological signal into a digital signal with a constant period, and records this in a temporary recording means such as a TC memory when the recording capacity reaches a predetermined value. , the contents can be stored in a large-capacity digital data recording means, such as Digital Audio Chip (DAT).
), the temporary recording means is transferred to an optical disk or the like, and once the transfer has been completed, the temporary recording means is again used for temporary recording of new biological signals.

Hereinafter, an embodiment of the present invention is shown in FIG. 1, and will be described in detail with reference to this figure.

(IN) is an input terminal for biological signals taken in through electrodes attached to the human body, and is connected to an amplifier (Ol). The amplifier (Ol) is connected to an A/D converter (02), and the biosignal amplified here is A/D converted. Hereinafter, the A/D converted signal will be referred to as a digital signal. A/
The D converter (02) is connected to the control means (03).

The control means (03) includes a switch (12) for the digital signal-time recording means (04) consisting of two recorders, and a switch (12) installed for each recorder to indicate that a predetermined amount of digital signals have been recorded. No counter! , 2 (18) (1'9)
This indicates that a predetermined amount of digital signals have been recorded in the digital signal recording means (05), which consists of a counter 3 (11) and a processor (10).

Here, when the recording of digital signals reaches a predetermined amount in one recorder, the switch (12) switches to the other recorder to continue recording.

The processor (10) confirms with counter 1 (08) or counter 2 (09) that the recorder has recorded a predetermined amount, and switches the recorder with the switch (12) to continue recording.

Next, the digital signal of the recorder that has recorded a predetermined amount is read out, and the digital signal recording means (05) continues recording on the area where the previous recording was finished.

The digital signal - time recording means (04) is a recorder + (
06) and recorder 2 (07). Recorder (06
) (07) is composed of an IC memory or a medium capable of temporary storage tα.

The digital signal recording means (05) is a large-capacity digital signal recording means, and is composed of an optical disk, a disk audio tape (DA'l'), or the like.

In the present invention, the biological signal is a digital signal with a constant period, and l
By using a temporary recording means such as a C memory in combination with a large capacity recording medium such as a digital audio tape, it becomes possible to record and reproduce long-term biological signals without distortion.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. IN...Input terminal, Ol......Amplifier, 02...
・・・・・・・・・A/D converter, 03・・・・・・
・・・・・・Control means, 04・・・・・・・・・・・・
...Digital signal - time recording means, 05...
...Digital signal recording means. Patent applicant Advance Co., Ltd. Figure 1

Claims (1)

[Claims] (1) An amplification means for amplifying an electrocardiogram signal, an analog/digital conversion means for converting the amplified analog signal into a digital signal, a temporary recording means for temporarily recording the converted digital signal, and a record for recording the temporarily recorded data. A long-term electrocardiogram recording device having means.