JPS6341924A - Keyboard device - Google Patents

Abstract

PURPOSE:To give plural kinds of reports relating to each of keys provided with light emitting diode by providing input keys having light emitting element of which can be changed to plural kinds. CONSTITUTION:Light emitting diodes D1-D8 are provided inside for each of keys 1-8, and their heads are exposed on the upper face of keys 1-8. A pair of sub-light emitting diodes d0, d1 made by connecting cathodes of light emitting diodes D1-D8 are put in a case 9, and respective anode terminal AP0, AP1 and a common cathode terminal are taken out. The sub-light emitting diodes d0, d1 emit light of color different from each other, and color of light emitting diodes D1-D8 is made to be changed. By providing input keys having a light emitting element color of which can be changed to plural kinds and making the elements emit light of colors of plural kinds, plural kinds of reports can be made relating to each of input keys to which the element is attached.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a keyboard device, and particularly to a keyboard device that is provided with an input key provided with a light-emitting element, and that uses light emission from the light-emitting element to notify some kind of information related to the input key to which the element is attached. The present invention relates to a keyboard device that performs the following operations.

[Prior Art] As a conventional keyboard device of this type, a keyboard device equipped with an input key provided with a light emitting diode is known. The light emitting diode is attached to a function key, for example, and emits light when the key is pressed to notify the operator that the function corresponding to the key has been selected.

[Problems to be Solved by the Invention] However, in such a keyboard device, notification is made simply by light emission from a light emitting diode, and therefore, for example, as described above, when the function of the function key to which the light emitting diode is attached is selected, Only one type of notification related to that key could be made, such as being able to notify only that the key was present.

[Means for Solving the Problems] In order to solve the above-mentioned problems, the keyboard device of the present invention adopts a structure in which an input key is provided with a light emitting element whose light emission color can be switched to a plurality of types. .

[Function] According to such a structure, by selecting a luminous color from among a plurality of types and causing the light emitting element to emit light, a plurality of types of notifications are emitted in relation to each of the keys to which the light emitting element is attached. can be done.

[Embodiments] Hereinafter, details of embodiments of the present invention will be described with reference to the attached drawings.

FIG. 1 is a top view of the operating section of the keyboard device according to this embodiment, and this device is configured as a keyboard device for an English electronic typewriter.

In the center of the operation unit, there are 2 keys in groups, each consisting of input keys for inputting alphabets, numbers, and symbols, and function keys such as space, carriage return, and shift, arranged according to a predetermined standard. provided in order.

In addition, above the key group 2 in the figure, there is a display DIS that displays the character string of the sentence being created, and on both the left and right sides of the key group 2, various functions related to editing the sentence to be created are provided. Key group Kl.

K3 is provided.

Furthermore, various changeover switches 5 are provided on the periphery of the operation section.
WI-5W9 are arranged, and through these, switching of underline mode, printing, display, and storage mode, switching of printing pitch, switching of line feed pitch, etc. are performed. .

By the way, the function key group Kl includes a centering key 1 for setting the position of the character string at the center of the printed paper. Layout key 2 to set the tab position, phrase key 3 to store character strings in the typewriter's memory, decimal tab key 4 to align the decimal point position, indent key 5 to set the temporary left margin position, frame when creating a table A frame key 6 for setting text and a text key 7 for storing text in memory are provided. Further, in the function key group 3, a code key 8 is provided for inputting a certain function using a code.

In the device of this embodiment, a light emitting diode DI-08 is provided inside each of the keys 1 to 8, and the head of each key is exposed on the upper surface of each of the keys 1 to 8.

The structure of the light emitting diodes D1 to D8 is as shown in FIG. , the structure has a common cathode terminal. And, for the sub light emitting diodes do and dl, for example, do is red and d! It is designed to emit light in different colors such as green, and the forward voltage is connected to the terminal APO.

By applying the voltage between the terminals KP or between the terminals API and KP, one of them is selected to emit light. That is, the light emitting diodes D1 to D8 have a structure in which the light emitting colors can be switched between two types.

In the device of this embodiment, such light emitting diodes DI to D
8, and two types of notifications are performed for each of keys 1 to 8. Specifically, when any of keys 1 to 8 is pressed, the light emitting diode attached to that key emits green light to notify the operator that the function corresponding to that key has been selected. inform. On the other hand, depending on the function executed by the electronic typewriter at that time, the light-emitting diode of the key corresponding to the prohibited function is made to emit red light to notify that the function of that key is prohibited.

Next, the configuration of the control system of the device of this embodiment that controls the drive of the light emitting diode DI-08 will be explained.

FIG. 3 shows the configuration of the control system. In the illustrated configuration, the above-mentioned light emitting diodes D1 to D8 are connected to the diode matrix circuit 18.
o ”' d Light emitting diode d surrounded by a dotted line within dT2
, 2, and d72, adjacent pairs of light emitting diodes, one that emits red light and one that emits green light, are used as one set.

The light emitting diode group doo "" dT2 is driven by the vertical and horizontal signal lines 'o-i' of the diode matrix circuit 18.
7 and m'0-m'2, respectively, of the digital transistors TO"T7 and T' of the driver.
, -T' 2 and also through the digital transistor "r
o-T7 is connected to the slave CPU (central processing unit) 13 via the decoder 16 connected via a protection diode.
It is now carried out by

The slave CPU 13 controls the driving of the light emitting diode group doo-dT2 and reads key inputs from the key matrix circuit 17 of the keyboard device under the control of the main CPU 10 which controls the entire electronic typewriter. The slave CPU 13 has a RAM (Random Access Memory) 14 and a ROM (Read Only Memory) 15, a decoder 16 is connected to its output terminals P20 to P23, and a digital transistor T' o-T is connected to the output terminals P25 to P27. '2 is connected.

Further, horizontal signal lines m□-m7 of the key matrix circuit 17 are connected to input terminals PIO to P17 of the slave CPU 13, respectively. Furthermore, key matrix circuit 1
7 is the signal line mo~m7 and the vertical signal line J2o-11
5, and at each of these intersections, the first switch indicated by a circle in the figure serves as a switch that connects and disconnects the signal lines.
It consists of each input key shown in the figure. And signal line j
The output of the decoder 16 is connected to each of 'o''ff1l=s.

On the other hand, the main CPU10 has RAMI1, ROM12
In the ROM 12, in addition to storing the entire control program in a program area PG, data necessary for various controls are also stored. Particularly in this embodiment, this data includes the light emitting diodes D1 to D.
As light emission control data for the light emitting diode group doo-d72 constituting the light emitting diode group 8, the light emitting diode group (t
A lighting data table TB corresponding to the diode matrix is stored for selecting and lighting each diode in oo-d72.

Next, regarding the operation of this embodiment device using the above control system,
This will be explained below.

First, the slave CPU 13 periodically reads key inputs using a known scanning method and generates a key code corresponding to the key inputs.

That is, the slave CPU 13 outputs the output terminals P20 to P
The decoder 16 is driven by the output signal from 23, and the signal i! io” while sequentially applying pulses to J2+5,
In synchronization with each pulse, the signal line m o ” m 7
Read the signal level from input terminals PIO to P17,
Determines key input, generates key code, main CPU
Output to l0.

On the other hand, the main CPU 10 performs the following processing according to the procedure shown in FIG.

First, the main CPU l0 connects the slave CP in step S1.
The key code sent from U13 is read, and then, in step S2, an event corresponding to the read key code is selected.

Next, in step S3, the main CPU 10 refers to the light-emitting diode lighting data table TB in the ROM 12 to obtain lighting data, and in step S4
The data is sent to the slave CPU 13.

Next, in step S5, the main CPU 10 executes the function selected in step S2, and when it is finished, returns to step Sl and repeats the following process.

On the other hand, the lighting data sent to the slave CPU 13 in Stella 7'S4 is written into a predetermined lighting data storage area set within the RAM 14. The format of the lighting data in the RAM 14 is, for example, a pit matrix corresponding to the matrix of the light emitting diode group doo-d72 is set in the RAM 14, and each bit of "1" or "O" indicates on or off of each diode. The format is as follows.

Then, the slave CPU 13 drives (emits light) the light emitting diode group doo'' d72 in accordance with this lighting data.

Specifically, the driving of the light emitting group dOO'=d72 is performed in parallel with the scanning of key input reading, and the output terminal is activated every time a low level pulse is applied to the signal lines 10 to -a15. The lighting data of the vertical diode array P25 to P27 is "l".

It is output in the form of "0", that is, in the form of high level or low level.

For example, if we consider a case where the signal lines J112 and ff113 are scanned and low-level pulses are sequentially applied to them, the digital transistor T6 turns on and its output terminal is connected to a predetermined positive power supply voltage Vcc. I can do it. At this time, when the output level of the output terminal P27 is set to high level, the differential transistor T'o is turned on and its output terminal is grounded. And the signal lineffl
'6. The power supply voltage Vc is applied to the light emitting diode d62 between m'2.
c is applied, and this diode emits light.

Furthermore, when the signal lines 114 and 115 are scanned and the output terminal P27 is set to a high level, the light emitting diode d72 similarly emits light.

In this way, for example, the light-emitting diode 'd62 emits red light or the light-emitting diode dT2 emits green light. That is, one of the light emitting diodes DI-D8 constituted by the light emitting diodes d, 2, d, 2 emits red or green light.

As mentioned above, when any of keys 1 to 8 is pressed, the light emitting diode Di attached to that key is
- Light up one of the D8's in green to notify that the function corresponding to that key is selected, and at the same time make one of the keys corresponding to the function prohibited by the function selected and executed at that time. The light emitting diode is made to emit red light to notify that the functions of these keys are prohibited.

For example, when creating a text, the light emitting diodes of layout key 2, phrase key 3, and frame key 6 are
, D3 and D6 are each emitted in red,
The prohibition of these keys will be announced.

As described above, according to the device of this embodiment, keys 1 to 8
For each of the attached light emitting diode DI-D8
By lighting up each key in green or red, it is possible to notify the operator that the function of that key has been selected or that the function is prohibited.

Note that in the above configuration, the light emitting diodes D1 to D8
Although the emitted light color can be switched between two types, if a device that can switch between three or more types is used, three or more types of notification can be performed.

Moreover, it goes without saying that the light emitting diodes D1 to D8 may be replaced by other suitable light emitting elements that can emit light in a plurality of colors.

[Effects] As is clear from the above description, the keyboard of the present invention employs a structure including an input key equipped with a light emitting element whose luminescent color can be switched to a plurality of types. By emitting light in different colors, it is possible to perform a plurality of types of notifications in relation to each input key to which the element is attached.

[Brief explanation of the drawing]

Fig. 1 is a top view of the Keepo 1 device according to the embodiment of the present invention, Fig. 2 is an explanatory diagram of the light emitting diode in Fig. 1, Fig. m3 is a block circuit diagram of the control system of the device of this embodiment, and Fig. 4 is a flowchart of the processing procedure by the main CPU in FIG. 3; 1 to 8...Key DIND8...Light emitting diode 10...Main CPU 13...Slave CPU 15...Decoder 16...Key matrix circuit 17...Diode matrix circuit Dl-D8 meeting 8■ Diode I is generated and Fioto says eft mua Fig. 2 The main CPU's g is tshi IIQ's 5 points @ Fig. 4

Claims (1)

[Scope of Claims] 1) A keyboard device comprising an input key provided with a light emitting element whose light emission color can be switched to a plurality of types. 2) The keyboard device according to claim 1, further comprising a control means for selecting a light emitting color of the light emitting element in response to a key input and causing the light emitting element to emit light.