JPS5910060A - Method and device for data communication - Google Patents

Abstract

PURPOSE:To transmit and receive plural bit parallel signals directly without converting them into a serial form, by extracting an input signal for each bit circuit and through a bit-based filter having specified frequency which differs for each bit circuit. CONSTITUTION:When the data on the parallel signals of 8 bits and 1 byte is transmitted, an output circuit 10 of each bit is connected to a modulator 11. At the same time, an oscillator 12 of a low frequency of several 100Hz is set between the modulator 11 and each circuit 10. The frequency of the oscillator 12 is set at different value for each circuit 10. Then different specified carrier frequencies are selected for each specified communication device which receives data, and the modulated wave to be transmitted contains both frequency components of a carrier wave and each signal wave. For instance, if the output signal of 8 bits and 1 byte is defined as (00010000)2, a 400Hz signal wave is added to a carrier wave of 27M'''. Then this carrier wave is transmitted in the form of a modulated wave of 27MHz+ or -200Hz.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a 4M5 method and device for data communication, which eliminates the need to reduce the number of bits parallel to the computer processing data into a single column. I am trying to provide a method that can be used to send the wires in parallel, and a device that can perform the above method with a simple method.

Conventionally, computer central processing units and terminal devices
”” The data between jB+ and
Parallel signals of the number of rice grains, such as 8 bits and 1 byte, are once rearranged into each bit signal 1111t (sequence), and this serial signal is transmitted by an appropriate means, and the receiving side are rearranged again to create a multiple-bit parallel signal, which is then processed.

However, in the above method, a parallel signal converter and a serial signal converter are required, and the speed is very high.
There was a large difference in processing speed compared to processing bytes, and there was a lot of waste in terms of overall processing power.

In addition, when communication is carried out using cables, if a separate line is used for each multiple bits, parallel signals for one byte can be transmitted (2).
Although it is possible to communicate at times, the line setup is troublesome and the cost is high, especially when using a portable train keyboard as a terminal device, or when using a large number of terminal devices. ) It was difficult to use and impractical.

Therefore, the present invention solves the above-mentioned conventional problems and develops a method that can simultaneously transmit and receive parallel signals, is inexpensive and easy to use, and its configuration is based on multiple bits. According to the example of each signal wave oscillated with the same specific wave number that differs for each bit signal for the parallel A signal, carrier waves of different specific frequencies are simultaneously modulated and transmitted for each i[1i transmitter, and one reception process is performed. After mixing the received wave with a local oscillation wave of a specific frequency that differs for each communication device, a filter collects only the specific immediate transmission frequency for each communication device, and after detecting this, Specific I
i! It is characterized by extracting the input signal for each bit line using a pit-specific filter with ij wave numbers.

Next, embodiments of the present invention will be illustrated below with reference to the drawings together with equipment used for implementation.

To briefly explain the transmitting section, for example, when transmitting 8-bit 1-byte parallel signal data, - modulators 1111t are connected between the output lines of each bit (between the output lines of each bit), and each output line ( 101 and the modulator 01J
The lil! The il wave number is set to a different value for each output line 001@. For example, in the figure, I
OOHz.

200Hz... is set every 100Hζ.

A carrier wave oscillator 03) is attached to the modulator 011,
From the above oscillator 02), change #,! The high frequency carrier wave is transferred to 7 while the signal waves input in parallel to II unit 01) are mixed.
It is tuned to R and is transmitted wirelessly from antenna 04).

As the frequency of the carrier wave, a different specific frequency is selected for each specific communication device that receives data; for example, in the case of the figure, it is 27 MH.

It is set to . Therefore, the transmitted variable θ1·, 1 wave is in a bad state as it simultaneously contains the frequency components of the carrier wave and each signal wave. For example, if there is number 48 called (00(jlOOOO)2) as an 8-bit 1-byte output signal, wave 48 of 400 Hz is added to the carrier wave of 27 MH2, and it is transmitted as a wave of θ1゛1 of 27 MHz and 200 Hz. be done.

Regarding the frequency of the carrier wave, for example, when transmitting from a terminal device to the central processing unit ff, it is sufficient to set one specific carrier wave number in the central processing unit, but when transmitting from the central processing unit f348 device to a large number of terminal devices, 1 is K. It is necessary for each asthma device toy to be able to transmit a carrier wave oscillator (?lt4) and one (1) wave of different frequencies;
3) may be made to have a structure that allows the same wave number of oscillation to be varied.

Next, the receiving section will be explained. First, it is assumed that carrier waves of different frequencies are mixed in the received waves received around the antenna.

This received wave is introduced into the mixer 2+1, and an output of a specific frequency from a local oscillator (22) consisting of a crystal oscillator in which a crystal is detachably housed is mixed with the received wave in the mixer 20. In the case of the figure, the local oscillation frequency is 17MH.
It's set to z. Therefore, if the received wave is 27MHz, the output wave from mixer t2+1 is 27MHz -17MH7=l
It becomes OMHz.

(It is a 23+Vi filter, which has the function of passing only a certain frequency, and extracts only the modulated wave that contains the data signal for the communication made from among the received waves, in the case of the filter in the figure). The wave number is set to IQMH Otsu. Therefore, if the received wave is Mfj 27 MHz, the output wave from the mixer (21) is IOMHz, so it can pass through the filter, but the received waves with other frequencies are blocked by the filter area and cannot pass through. It will be removed.

The 11 waves of variable δ that have passed through the filter are detected by a detector, and only data signal waves are extracted.

That is, in order to compensate for the embodiment, the output of IOMH2- is detected by a detector (2
), the 10 MHz carrier wave component is cut.

The output from the detector is sent to an input line installed for each bit, but each human-powered line (25
) and the detector (equipment), there are filters for each pit)
and a pulse oscillator are provided, among which only the signal waves corresponding to the frequencies of the respective oscillators 02+ of the transmitter are passed in the bit order of the bit-specific filter CIIE If'i (each input line), and the bit-specific filter Pulse oscillator □□□
A pulse signal, which becomes computer processing data, is output from. For example, in the case of the embodiment, in order from the input line of the upper bit (bit filter α provided with 25 HC),
Only eight wave number components of 100Hz, 200Hz, . . . are allowed to pass through.

The Naohals oscillator @ is designed so that even if the signal wave of other bits leaks into the signal wave of the bit selected by the bit-specific filter α), it will not oscillate a pulse unless a signal wave of a certain strength or higher is input. This prevents interference and ensures complete data reception.

As described above, according to the method of this invention! Since multiple bits of parallel signals in bytes are simultaneously mixed and sent and received wirelessly, the communication speed is much faster than that via a conventional parallel-to-self-effect conversion device, and the processing capacity of the computer itself is greatly increased. This makes it possible to eliminate waste.

In addition, each bit signal part is converted into a specific frequency component and transmitted, and the receiving part uses a bit-specific filter provided for each bit to reseparate it into individual bit signals and input it, so the transmitted data and received data are correct. a((), and there is no need to worry about interference between each bit signal. Therefore, data processing inside each terminal device and within the central processing unit can be performed in exactly the same way as before, and no additional equipment is required. It is.

Furthermore, the carrier frequency at the time of transmission is the other party's communication device? ? Since each carrier is set to a specific value and the receiving communication device selects and extracts only the carrier wave with a specific frequency, even when many terminal devices are used at the same time, it is possible to You can receive and pass data precisely.

And the device i which implements the above method! Even if it is a conventional AM transceiver such as a transceiver +? Compared to I, it does not require a very complicated structure, can be made smaller, has lower manufacturing costs, and is very convenient because data communication can be performed by simply adding it to a part of the terminal device light.

In addition, if the frequencies of the carrier wave oscillator 03) in the transmitting section and the local oscillator in the receiving section 8 can be recorded, the parties for transmission and reception can be freely selected and changed, especially for the local oscillator C2). If a crystal oscillator is used, the same wavenumber can be easily changed by simply replacing the crystal, which is very convenient. Furthermore, even if the number of communication devices used simultaneously increases, this can be easily handled by simply changing or adding the above-mentioned allocation of the number of insertions and the like.

A specific example of the use of the above-mentioned method and device is, for example, aggregation of data from a questionnaire survey.

That is, a large number of examiners can be accommodated in a certain venue, and the communication device 1 of the present invention can be installed in a terminal device such as a calculator-like keyboard for one central processing unit. ＝Prepare a large number of J beasts and keep one for each person surveyed.Then, the answers to the questionnaire items are entered into each terminal device at the same time, and the data is transmitted wirelessly and compiled in the central processing bag. Along with processing, if necessary, it is also possible to transmit instruction data from the central processing unit to each KM examiner to the appropriate display section of the terminal device via IUI.Moreover, data lines are connected to each of a large number of terminal devices. Since there is no need to set up a terminal device and the terminal device can be carried freely, the survey venue can be set freely and can be suitably applied to questionnaire surveys outdoors or on the street.In this case, the radio waves used are subject to the Radio Law. A type with low output strength that is not subject to such regulations shall be used.

[Brief explanation of drawings]

The figure exemplifies the embodiment of this origin.
The figure is a block diagram of the transmitter, and FIG. 2 is a block diagram of the receiver. 001...Output line [11]...
・Modulator 021... Oscillator 03;...
・・・・Radio transmitter optical oscillator t21+・・・・・・Mixer
In...Local oscillator tube)...Filter (Foundation)...Detector tube)...Input line...Pit-specific filter ( 2
)...Pulse oscillator. Patent applicant: Hudson Shokai Co., Ltd.

Claims (1)

[Claims] 1. Each ping for multiple-bit parallel signals ] and send 5 waves at the same time.
: Respectfully sent (M L, received wave for each parent) A,
After mixing with a local oscillation wave of different Q and 1 constant LJjl waves in the 5' unit, a filter outputs only the specific 41HB transmission frequency for each jiJ1 color (Ilx), and after detecting this, each Bit cycle 7:?, 46- is a bit-by-bit filter with a specific 1?'il wave number, input for each bit line. , For transmission (S), multiple pits are parallel (, f is provided with a shield with a specific 1-11 wave number that differs for each bit, and a can (outside wave) is input simultaneously from each wire). Piece 1
゛11 vessels include 1 for each use (1 for each use)
Legs 1. ! ,,1)+number 41. A transmitter oscillator is installed, and the first part is a mixer that combines the power from the local oscillator with a different specific IWI wave number with the first E wave. In the filter that handles the mixed wave, only the 1] wave is passed, and a detector for this modulation, and a detector for each bit, and A data coloring device characterized in that a bit filter and a pulse vibrator are installed between each pitch Hυ゛ to trace only a different specific Hυ′ signal.3. g city), -゛nol; 1 tatsuki from IS, 1 intersection
Apparatus i consisting of a crystal oscillator that oscillates the crystal oscillator at will
'=I'.