JPH0685950A - Personal computer communication equipment - Google Patents

Abstract

PURPOSE:To attain personal computer communications immediately by having only to connect a telephone set and a television receiver by providing a key board and an output circuit for the connection of a color television receiver in an interface circuit of a CPU. CONSTITUTION:A central processing unit(CPU) 1 of a microcomputer has a microprocessor, a memory, and an interface circuit (I/O) in its inside, and to the I/O, a key board 2 as an entry device, a modulation demodulation circuit 4 modulating a digital signal of the CPU 1 connecting to a telephone line 3 into an analog signal and demodulating the analog signal transmitted through the telephone line 3 into a digital signal, an output circuit 6 used to output a video signal and an audio signal to a color television receiver 5, and a printer 7 printing out received information and input information are connected respectively. Thus, a home use color television receiver is utilized without modification and personal computer communications are immediately and very simply executed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to so-called personal computer communication in which a personal computer is connected to a telephone line, data in a database stored in a large computer is retrieved, and information is exchanged with other personal computers. The present invention relates to a personal computer communication device which can be easily operated by a very simple operation without using a personal computer.

[0002]

2. Description of the Related Art Conventionally, when personal computer communication is attempted, a personal computer communication modem is connected to the personal computer, and a telephone line is connected to this modem.
There is a problem that it is not easy to do if you are not familiar with the handling of personal computers, such as preparing a separate software for personal computer communications and requiring complicated operations just for personal computer communications. In addition, a product with a communication function has been proposed as the performance of the word processor has improved, but this is also because, as with a personal computer, it is necessary to familiarize yourself with the operation of the word processor first and then use the software for personal computer communication. It is considered that personal computer communication itself is completely out of reach for generations who are over 40 years old and are not accustomed to operating information devices, and it is not possible to utilize the huge amount of database that has been accumulated. It was desired to propose a product that can communicate with a personal computer with a simple device and with a simple operation.

[0003]

SUMMARY OF THE INVENTION The present invention is intended to solve these problems of the prior art and to provide a device which enables anyone to easily communicate with a personal computer. In the present invention, attention is particularly paid to the fact that telephones and color televisions are already prevalent in every home, and personal computer communication devices are provided so that personal computer communication can be achieved immediately by simply connecting the telephone and television. Is proposed.

[0004]

Next, the structure of the present invention will be described. Reference numeral 1 is a central processing unit (hereinafter, CPU) of a microcomputer, which is a microprocessor inside,
It has a memory and an interface circuit (hereinafter referred to as I / O), which is connected to a keyboard 2 as an input device and a telephone line 3 to modulate a digital signal of the CPU 1 into an analog signal and through the telephone line 3. Modulator / demodulator circuit 4 for demodulating an analog signal transmitted as a digital signal, an output circuit 6 for outputting a video signal and an audio signal to a color television 5, and a printer for printing out received information and input information. 7 are connected to each other. The output circuit 6 is composed of a CRT controller 8 connected to the I / O of the CPU 1 and an NTSC encoder 9 for converting the RGB signal and the synchronizing signal output from the CRT controller 8 into an NTSC system video signal. . A communication procedure such as a communication protocol is programmed in the memory of the CPU 1 together with a management procedure of each input / output circuit connected to the I / O in advance, and data and a telephone number relating to the communication procedure defined in each PC communication center. Is remembered. Further, in this embodiment, the keyboard 2 of the input device is constructed by a cordless remote control system using infrared LEDs, and the input of the full keyboard can be transmitted to the I / O cordlessly.

[0005]

Next, the operation of the present invention will be described. When the power is turned on, the CPU 1 operates according to a preset procedure, and first outputs a signal to the I / O to output the menu screen stored in the memory. A menu screen is displayed on the color television 5 as an NTSC video signal via the CRT controller 8 and the NTSC encoder 9. Follow the instructions on this menu screen for keyboard 2
From, for example, to access the PC communication center (host station), enter the host station number, etc.
The CPU 1 outputs a digital signal to the modulation / demodulation circuit 4 together with a preset communication procedure, and the modulation / demodulation circuit 4 is connected as an analog signal to the host station via the telephone line 3 to transmit necessary data. On the other hand, the host station side recognizes the other party by this data and starts the connection, and transmits the guide information such as the top menu and the like to start the personal computer communication. Then, the information from the host station is received by the modulation / demodulation circuit 4 via the telephone line 3, and the output circuit 6 is operated by the processing of the CPU 1 to be displayed as an image on the color television 5.
If necessary, the printer 7 is operated by an instruction input from the keyboard 2 to print out the received information or the input information. FIG. 2 is a perspective view showing a state in which the personal computer communication device of the present invention is actually used. A user who has obtained this device connects the cord of the output circuit 6 of the device to the video terminal of the hand-held color television 5 and holds it. All you have to do is to connect the modular code of your telephone to the modem circuit 4 of this unit and turn on the power.

[0006]

As described above, if the personal computer communication device of the present invention is used, a color television for general household use can be utilized as it is, and personal computer communication can be performed very easily immediately after the device is obtained. Because you can
For the general user who is not familiar with PCs, it will bring the good news. Further, since a color television for general household is used as it is, it can be provided at an extremely low cost.

[Brief description of drawings]

FIG. 1 is a block diagram of the present invention.

FIG. 2 is a perspective view showing a usage state of the present invention.

[Explanation of symbols]

 1 is a central processing unit 2 is a keyboard 3 is a telephone line 4 is a modem circuit 5 is a color television 6 is an output circuit 7 is a printer 8 is a CRT controller 9 is an NTSC encoder

Claims (1)

[Claims] 1. An interface circuit of a central processing unit in which a communication procedure and a management procedure of an interface circuit are preset, a modulation / demodulation circuit connected to a telephone line, a keyboard for inputting information, a CRT controller and an NTSC encoder. A personal computer communication device configured by connecting an output circuit that connects to a Nari color television.