JPS63261113A - Waveform recording device - Google Patents

Abstract

PURPOSE:To know the motion of a waveform recorded before the start of recording in advance and to enable sensitivity adjustment and the position determination of a base line by adding an LED array corresponding to respective thermal heads to a line type recorder. CONSTITUTION:A thermal head 1 consists of 16 thermal heads 101-116 and the LED array 2 consists of four LEDs 201-204. Then a thermal head driver 3 activates signals for driving the heads 103 and 111 so as to drive the heads 103 and 111. An LED driver 4, on the other hand, receives a command from the controller 5 and activates signals for driving the LEDs 201 and 203 responding to the heads 103 and 111. Thus, while some of the heads 101-116 are driven, corresponding LEDs among 201-204 are driven.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a waveform recording device, and particularly to a waveform recording device having a thermal head array.

[Prior Art] Conventionally, as this type of waveform recording device, a pen recorder that records a human-powered voltage waveform using, for example, a thermal pen or an ink pen has been used.

In contrast, recently there has been an increase in the number of line recorders that use thermal head arrays to record waveforms, characters, graphs, etc. A line recorder using this thermal head array has a structure in which an electrical drive signal is applied to a continuous thermal head to perform recording.

[Problems to be solved] The conventional line recorder using a thermal head array as a waveform recording device described above has a structure in which an electrical drive signal is applied to a continuous thermal head to perform recording. Unlike a pen-type recorder, it is not possible to know the movement of the recorded waveform and adjust the sensitivity or adjust the baseline position before starting recording.

[Means for Solving Problems] The present invention has been made to solve the problems of the prior art described above. A waveform recording device comprising a thermal head driver for driving a thermal head driver and a controller for controlling the thermal head driver, an LED array including a plurality of LEDs corresponding to one or more of the thermal heads; an LED that drives the LED array based on an output signal from a controller to the thermal head driver;
The configuration includes a driver.

Embodiments] Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing an embodiment of the present invention.

Reference numeral 1 denotes a thermal head array, which is composed of 16 thermal heads 101 to 116.

2 is an LED array, which is composed of four LEDs 2o1 to 204.

3 is a thermal head driver, which controls each thermal head 101 to 116 by an output signal 51 from the controller 5.
It outputs a signal that drives the.

4 is an LED driver, which receives a signal 51 from the controller 5 to the thermal head driver 3 and outputs the LEDs 201 to 2.
It outputs drive signals 41 to 44 that drive 04.

Here, the LED 201 is connected to the thermal heads 101 to 104.
LEDs 202, 203 and 204 correspond to thermal heads 105-108 and 109-111, respectively.
, 112-115. The LED driver 4 extracts the drive signals for the thermal heads 101 to 104 from the signal 51 sent to the thermal head driver 3 of the controller 5, and outputs the logical sum of the drive signals 41 for the LED 201.

Similarly, the drive signals to the LEDs 202, 203, 204 are as follows:
Thermal heads 105-108 and 109-11 respectively
It is a logical OR signal obtained by extracting the drive signals from 1,112 to 115. This LED driver 4 can be composed of a shift register and an OR circuit.

Now, the controller 5 controls the thermal heads 103 and 11.
When the thermal head driver 3 is commanded 51 to drive the thermal heads 103 and 111, the thermal head driver 3 activates a signal for driving the thermal heads 103 and 111.

On the other hand, the LED driver 4 receives a command from the controller 5 as an output signal 51, and receives a drive signal 41 that drives the LE, D201, 203 corresponding to the thermal heads 103, 111.
．． Activate 43. In this way, when the thermal heads 101 to 116 are driven, the corresponding LEDs 201 to 204 are simultaneously driven.

[Effects of the Invention] As explained above, the present invention adds an LED array corresponding to each thermal head to a line recorder using a thermal head array, so that the waveform to be recorded can be adjusted before starting recording. This has the advantage of being able to adjust the sensitivity and determine the position of the baseline by knowing the movement of the sensor in advance.

Also, using the signal to the thermal head driver, L E
Since the D array is driven, there is no need for extra controllers, software, etc. to light up the LEDs corresponding to the thermal head array, and the control is simple.

Furthermore, the display unit including the LED array and the LED driver is connected only by a signal line to the thermal head driver, which has the effect of greatly simplifying the arrangement and wiring.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a waveform recording device according to an embodiment of the present invention. l: Thermal head array 2: LED array 3: Thermal head driver 4: LED driver 5: Controller 101-116: Thermal head 201-204: LED

Claims (1)

[Claims] A waveform recording device comprising a thermal head array including a plurality of thermal heads, a thermal head driver for driving the thermal head, and a controller for controlling the thermal head driver, which corresponds to one or more of the thermal heads. 1. A waveform recording device comprising: an LED array in which a plurality of LEDs are arranged, and an LED driver that drives the LED array based on an output signal from the controller to the thermal head driver.