JPS6158034A - Display device - Google Patents

Abstract

PURPOSE:To improve the input efficiency from a keyboard by storing data transferred from a refresh memory to a computer into a transmission buffer memory. CONSTITUTION:A memory write data from the computer is written in a refresh memory 3 by a processing circuit 2, its output is converrted into a character pattern by a character generator 4, displayed on a display device 5 and the data transmitted from the memory 3 to the computer is stored in a transmission buffer memory 7. After the input data is stored from the keyboard 6 to the memory 3, the transmission switch is depressed, the data is transferred sequentially to the memory 7 to erase the input data of the memory 3. Thus, the input from the keyboard 6 is attained even during the data transfer to the computer.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a display device, and particularly to a display device with improved data transfer method.

[Prior art]

FIG. 1 is a block diagram of a conventional display device, in which (1) is a line control section, (,2) an i2 processing circuit,
(3) is a refresh memory, (11 is a character generator, (5) is a display, and (6) is a keyboard.

Data from the computer (not shown) is sent to the line control unit (/l
The control code for data transfer and the memory write data are determined by the processing circuit 3, and the memory write data is written to the refresh memory (3) by the processing circuit (-). The output of this refresh memory (, 7) is converted into a character pattern by the character generator (gradient) and displayed on one display (3).
and displayed on the CRT.

The data from the computer typically displays guidance to the operator as a format screen.

FIG. 2 shows an example of a format screen displayed using data from a computer. On the other hand, input from the keyboard (6) is determined by the processing circuit (2) as a screen editing code and memory write data, and the memory write data is written into the refresh memory (3).

The data written to the refresh memory (J) is displayed in the same manner as the data written from the computer to the refresh memory <37. keyboard(
The input from A) is usually transferred to a computer as input data.

FIG. 3 shows an example of one display screen when input is made from the keyboard 6) on the format screen shown in FIG.

In this case, the customer code, order date, and number i have been input from the keyboard (6).

After the operator completes the required input, the keyboard
) When the transmission switch provided on Ic is pressed, the processing circuit (2) determines that it is a transmission control code and gives a transmission instruction to the one-time edge sterilization section (1). The line control unit (1) performs preprocessing for data transfer with the computer, and establishes a state in which data transfer is possible. After this,
The input data from the keyboard controller 6) stored in the refresh memory (3) is read out by the processing circuit (2) at a speed pre-arranged with the computer and sent to the first line cutting section (1). sent to the computer via The transmission of the input data from the refresh memory (3) is completed after the send key of the keyboard (6) is pressed. Therefore, the input data from the keyboard (6) must be is locked by the processing circuit (2). When the transmission of the input data to the refresh memory (, 7) is completed, the keyboard (6) is unlocked and new input becomes possible.

Since the conventional display device was configured as described above, input data from the refresh memory could not be input from the keyboard within +2 seconds while the input data was being sent to the computer, and the input efficiency from the keyboard was reduced. This phenomenon is more serious the slower the data transfer speed between the computer and the computer.

[Purpose of the invention]

This invention was made in order to eliminate the drawbacks of the conventional ones as described above, and by providing a sending buffer memory for transferring input data to the refresh memory, data transfer between the computer and the sending buffer memory is performed. The purpose is to provide a display device that allows input from the keyboard even while data is being transferred to and from a computer.

[Embodiments of the invention]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 7 is a configuration diagram showing an embodiment of the present invention. In the figure, (1) to (6) denoted by the same reference numerals as in FIG. 1 have the same functions as in FIG. 7. (7) is a transmission buffer memory that stores data to be transferred from the refresh memory (3) to a computer (not shown). Detailed explanation of the same parts as the conventional device will be omitted.

Only the parts related to this invention will be explained. keyboard (6
) is pressed, the processing circuit (:l) sequentially transfers only the input data of the refresh memory (3) to the transmission buffer memory (wa). When the transfer to the sending rough memory (7) is completed, the input data in the fresh memory (3) is erased and input from the keyboard (6) becomes possible. On the other hand, the transmit buffer memory (7
) is transferred to the computer via the line control unit (1). In this way, input from the keyboard (6) is possible even while data is being transferred to the computer.

〔Effect of the invention〕

As described above, according to the present invention, a transmission buffer memory is added so that data transfer between the computer and the computer, which requires a long transfer time, can be performed between the transmission buffer memory and the keyboard and the refresh memory even while data is being transferred to and from the computer. Since it is possible to input the following information, it is possible to obtain the effect of improving input efficiency.

[Brief explanation of the drawing]

FIG. 7 is a block diagram of a conventional display device, FIGS. 2 and 3 are diagrams showing screen display examples, and FIG. 7 is a block diagram of a display device according to the present invention. (1)...Line control unit, (K)...Processing circuit, (3)...
・Refresh memory, (1) Character generator, (S) Display, (6) Keyboard, (7
)...Transmission buffer memory. In each figure, the same reference numerals indicate the same or corresponding parts. Banknote 2 diagram 3 diagram

Claims (1)

[Claims] A line control unit that controls data transfer with the computer, and a CRT
A display device that displays characters, etc. on the display device, a refresh memory that stores data to be displayed on the display device, a keyboard that is an input means for the operator, and data transfer between the line control unit or the keyboard and the refresh memory. and a character generator that converts the output from the refresh memory into a character pattern and sends it to the display device, the display device further comprising a transmission buffer memory that stores data to be transferred from the refresh memory to the computer. A display device characterized by: