JPS6141416B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a display device that displays a plurality of different displays using the same code.

Conventionally, in order to reduce the number of code types, the same code was used for uppercase and lowercase letters of the alphabet, one type of special information code was provided to distinguish between uppercase and lowercase letters, and each character was coded with 5 bits.
There are 31 types, and there is one that creates all the codes, but when editing the text, when the original text is separated in the middle, the beginning of the second half of the original text may be lowercase.
Since no special information code is provided for the lowercase letter at the beginning of the sentence, the beginning of the sentence may be displayed as it is in lowercase.

In view of the above circumstances, the present invention provides a display device configured to use the same code signal for uppercase and lowercase letters of the alphabet, and to automatically decode the code signal corresponding to the alphanumeric character at the beginning of a sentence into an uppercase letter.

Hereinafter, one embodiment of the present invention will be described in detail using the drawings.

FIG. 1 is a circuit block diagram of an embodiment of a display device according to the present invention, and FIG. 2 is a signal waveform diagram.

The embodiment of the display device shown in FIGS. 1 and 2 is for displaying English text, and uppercase and lowercase letters of the alphabet are represented by the same code.

Reference numeral 1 denotes a storage device for storing a plurality of English sentences, in which coded characters or symbols and special information codes are stored. Reference numeral 2 denotes a storage device that stores one English sentence outputted from the storage device 1 by a key operation or the like. 3 is a control circuit which outputs a signal S ₁ for outputting the code signal stored in the storage device 2 one digit at a time, and a signal generated when the first character is output from the storage device 2. S ₂ , a signal S ₃ for resetting the flip-flop 4 every time a one-digit code signal is output from the storage device 2;
is what is output. The above-mentioned flip-flop 4 is a J-K type flip-flop, 5 is an inverter, and 6 is a flip-flop when the code signal from the storage device 2 is special information (that is, information indicating that the next code signal should be displayed in uppercase letters). , is a detection circuit that sets the flip-flop 4 when outputting the next character code. 7 is a decoder that displays character codes in uppercase letters, 8 is a decoder that displays character codes in lowercase letters, and 9 is a display body. Also OR1
and OR2 indicate an OR gate, and AND1 and AND2 indicate an AND gate.

Next, the operation will be described. By performing a predetermined key operation, a specific sentence is selected from the storage device 1 and transferred to the storage device 2. After that, since the signal S ₁ is output from the control circuit 3, the code signal for the first character is output from the storage device 2, and the signal S ₂ is output from the control circuit 3 at the same time as the signal S ₁ , so an AND gate is output. AND2 does not open and gate
AND1 is opened, the code signal for the first character is input to the decoder 7, and the uppercase character is displayed.

Next, when the second pulse of signal S ₁ is applied to storage device 2, signal S ₂ is not output and signal
Since the flip-flop 4 is in the reset state by _S3 , no output signal is output from the OR gate OR1, and the AND gate is output by the inverter 5.
Since AND2 is open and AND gate AND1 is closed, the character code signal output from storage device 2 is displayed as a lowercase letter by decoder 8.

Next, when the third pulse of the signal _S1 is applied to the memory device 2, it is assumed that special information is output from this memory device. At this time, the decoder 8 does not decode the special information as characters, so no characters are displayed. Further, the detection circuit 6 detects the special information and outputs a set signal to set the flip-flop 4 at the fourth pulse of the signal _S1 . Therefore, when a character code is output from the storage device by the fourth pulse of the signal _S1 , an output signal is generated from the OR gate OR1, so the character code is input to the decoder 7, and an uppercase letter is displayed.

Since the control circuit 3 outputs the signal _S3 every time a character code is output, the flip-flop 4 is in a reset state when the fifth pulse of the signal _S1 is output, and eventually the fifth pulse of the signal _{S1 is} output. After the th pulse, lowercase letters are displayed.

As explained above, according to the present invention, there is provided a storage means for storing a code signal of display information of alphanumeric characters constituting a sentence, and a first and a first and a second decoder for decoding the code signal outputted from the storage means into uppercase and lowercase letters. 2 decoders and introduction means for introducing the same code signal of display information stored in the storage means into either the first or second decoder, Since the control means is provided for inputting the code signal to the first decoder when the corresponding code signal is output, the code signal corresponding to the alphanumeric character at the beginning of the sentence is
Even if there is no information indicating that it should be displayed in uppercase, it will be decoded into uppercase, and when editing the text, if the original sentence is separated in the middle, even if the beginning of the second half of the original sentence is a lowercase letter, the lowercase letter will be displayed when displayed. It is output in uppercase letters, which improves writing efficiency.

[Brief explanation of the drawing]

FIG. 1 is a circuit block diagram of a display device according to the present invention, and FIG. 2 is a waveform diagram of each part of FIG. 1. In the figure, 1, 2: storage device, 3: control circuit, 4:
Flip-flop, 5: inverter, 6: detection circuit, 7, 8: decoder, 9: display.

Claims (1)

[Scope of Claims] 1. Storage means for storing a code signal of display information of alphanumeric characters constituting a sentence; first and second decoders for decoding the code signal output from the storage means into uppercase and lowercase letters; and introduction means for introducing the same code signal of display information stored in the storage means into either the first or second decoder, wherein a code signal corresponding to an alphanumeric character at the beginning of a sentence is transmitted from the storage means to the first or second decoder. A display device comprising control means for inputting the code signal to the first decoder when the code signal is output.