JPH04919A - Electronic equipment - Google Patents

Abstract

PURPOSE:To omit a signal cable between the electronic equipment and a peripheral equipment by providing a synthesizing separating means for synthesizing/ separating data to be transmitted/received to a power source voltage. CONSTITUTION:At the time of starting up an information processor 100 and a printer 200, printing data prepared by the information processor 100 is outputted to the printer 200. This printing data is led from a CPU 101 through a printer interface 103 to a parallel/serial converter 131 of a modulation/ demodulation circuit 130. The converted printing data is outputted to a synthesizing/separating circuit 120 after being amplifiered by an output amplifier 133. In the synthesizing/separating circuit 120, after being turned to a carrier by a turning circuit, the data is impressed to the power source voltage of a service socket power supply line 121. The printing data impressed to the power supply voltage is outputted to the printer 200 together with the power supply voltage from a service socket 115.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic device capable of transmitting and receiving data to and from peripheral devices.

[Prior Art] As a conventional electronic equipment system, for example, Japanese Patent Laid-Open No. 62
There is one described in Japanese Patent No.-26520.

This electronic device system consists of an electronic device, a peripheral device that sends and receives data to and from the electronic device, and a power source that supplies both of these devices with power taken from a specific power supply system, such as an indoor outlet. It is equipped with a device.

Electronic equipment is provided with data synthesis means for synthesizing power supply voltage taken in from a power supply device with power-on/power-off data of peripheral devices.

A power supply device turns on/off the power supply voltage sent to peripheral devices based on data sent via the power cable of the electronic device.
A switch circuit is provided for disconnecting.

The peripheral device is provided with a power cable connected to this switch circuit. A signal cable for mutually transmitting and receiving data is provided between the peripheral device and the electronic device.

In this electronic device system, the power supply voltage of one peripheral device is turned on/off based on power on/off data sent from the electronic device to the power supply device via the power cable.
Data is transmitted and received between electronic devices and peripheral devices via signal cables.

In addition to the above-mentioned electronic equipment system, examples of this type of equipment include National Se@1conductor
There is a Carp LM1893 carrier current transceiver.

This device is equipped with a synthesis/separation means that combines data with the power supply voltage and separates the data from the power supply voltage.
A power cable is connected to a specific power supply system, and data is transmitted and received via the power cable and the power supply system.

[Problems to be Solved by the Invention] However, in the former electronic device system, only power on/off data is unilaterally output from the electronic device via the power cable, and other data is output via the signal cable. , transmission and reception is performed between electronic devices and peripheral devices, and each electronic device and peripheral device requires a signal cable in addition to its own power cable, and multiple cables are used to connect the electronic device and peripheral devices. Not only do they disturb the aesthetics of the equipment, but it also takes time and effort to install the equipment.
There is a problem that the cable is more likely to get caught. Further, when other equipment is connected to the power supply system to which the electronic equipment system is connected, there is a problem that data may enter the other equipment via the power supply system and cause it to malfunction.

In addition, the latter type can send and receive data via a power cable, so there is no need for a signal cable between the peripheral device and the electronic device, but data is sent and received via a specific power supply system. , as with the former one, has the problem of causing other devices connected to this power supply system to malfunction.

The present invention was made by focusing on these conventional problems, and it is possible to omit signal cables between electronic equipment and peripheral equipment, and to create equipment that draws power from the same power supply system. Electronic devices and information processing equipment that do not malfunction,
and printing devices.

[Means for Solving the Problems] To achieve the above object, the present application provides the following invention.

The invention related to an electronic device provides an electronic device capable of transmitting and receiving data to and from a peripheral device and supplying a power supply voltage from a power supply section, wherein the data is transmitted to and from the power supply voltage supplied from the power supply section. The data is characterized by comprising a combining/separating means for combining and separating from the power supply voltage, and a filter for removing frequency components of the data combined into the power supply voltage from the power supply voltage supplied to the power supply section. It is something to do.

It is preferable that the electronic device is provided with a switching means for switching whether the data is passed through the transmitting/receiving section or the combining/separating means.

Furthermore, the electronic device includes recognition data adding means for adding recognition data to the data that causes the peripheral device to recognize the data transmission source, and recognition data in the data received from the peripheral device to recognize the transmission source. Preferably, a source recognition means is provided.

The invention related to an electronic device connected to the above-mentioned electronic device includes a combining/separating means for combining data with a power supply voltage and separating it from the power supply voltage, and adding recognition data to the data to recognize the data transmission source. The invention is characterized in that it includes recognition data adding means for adding recognition data.

Preferably, this electronic device is also provided with source recognition means for recognizing the source using recognition data in the received data, similar to the electronic device described above.

The above invention related to electronic equipment can also be applied to information processing devices and printing devices. In order to apply it to an information processing device, a juxtaposition conversion means converts parallel data created by a CPU into serial data and outputs the serial data to the synthesis and separation means, and the data separated by the synthesis and separation means. This can be achieved by providing a numeric conversion means for converting into parallel data and outputting the parallel data to the CPU.

[Operation] Data created within the electronic device is synthesized into a power supply voltage supplied to peripheral devices by the synthesis/separation means. On the other hand, peripheral devices that receive power supply voltage from the electronic devices are
Data is also taken in along with the power supply voltage. The synthesis/separation means of the peripheral equipment separates data from the supplied power supply voltage and performs parking based on this data.

Data from the peripheral device is combined with a power supply voltage supplied from the electronic device by a synthesis/separation means of the peripheral device, and is sent into the electronic device via a power supply section of the electronic device. This data is processed by the synthesis and separation means of the electronic device.
It is separated from the power supply voltage and is controlled by the CPU, etc. in electronic equipment.
Predetermined processing is performed.

In this way, the data transmitted and received between the electronic device and the peripheral device is superimposed on the power supply voltage supplied from the electronic device to the peripheral device, so there is no need to provide a signal cable between the electronic device and the peripheral device.

In addition, the transmitted and received data is superimposed on the power supply voltage supplied from the electronic device to the peripheral device, and a filter is provided to remove the carrier wave component of the data from the power supply voltage supplied to the power supply section of the electronic device. Data is not output to anything other than electronic devices and peripherals.

(The following is a blank space) [Examples] Hereinafter, various embodiments of the present invention will be described based on FIGS. 1 to 6. In addition, in explaining various embodiments, the same parts are given the same reference numerals and redundant explanations will be omitted.

A first embodiment will be described based on FIGS. 1 and 2.

The information processing system of the first embodiment is constructed from an information processing device 100 and a printing device 200, as shown in FIG.

Information processing bag! 100 is a CPU l0 that performs a predetermined operation.
I, a memory 102 storing data and programs for operating the CPU I0I, a printer interface 103, and a bus 104 connecting these.
A power supply device 110 that supplies power to these devices is provided.

The power supply device 110 includes an AC plug 111, an AC power cable 112, a power circuit 113 that supplies power to the CPUl01, etc., a service outlet (power supply section) 115 that supplies power to the printing bag W20o, and a printer interface 103. The printing device 2 modulates the data of
A modulation/demodulation circuit 130 that demodulates data from 00, a synthesis/separation circuit 120 that combines data with a power supply voltage and separates data from the power supply voltage, and an AC power cable 112.
and a low-pass filter 114 provided in a power supply line 116 connecting the 98-synthesizing circuit 120.

As shown in FIG. 2, the printer interface 103 is a CPU interface section 103 for the CPU10I.
a, an output interface section 103b for the modulation/demodulation circuit 130, and an input interface 103c for the modulation/demodulation circuit 130 as well.

The combining/separating circuit 120 includes a service outlet power line 121 that leads the power voltage obtained from the power line 116 to the service outlet 115, and a service outlet power line 121 that leads the power voltage obtained from the power line 116 to the service outlet 115.
A transformer 122 connected to one end of the transformer 121, a capacitor 125 connected in series to the primary side 123 of the transformer 122, a capacitor 126 connected in parallel to the secondary side 124 of the transformer 122, A resistor 127 is connected in series to the next side 124.

The modulation/demodulation circuit 130 includes an output section that outputs data from the printer interface 103 to the combination/separation circuit 120;
It has an input section that outputs data from the synthesis/separation circuit 120 to the printer interface 103. The output section includes a parallel column converter 131 that converts bit parallel data from the output interface section 103b of the printer interface 103 into bit serial data, and an FSX (
An FSK modulator 132 that applies frequency (5-hift keying) modulation, and an output amplifier 133 that amplifies the modulated data and outputs it to the synthesis/separation circuit 120 are provided. Note that FSX modulation means that bit data of O and 1 are modulated at specific modulation frequencies f. and fl. The input section includes a combination/separation circuit 120.
an input amplifier 134 that amplifies the signal obtained by B E F (Ba
nd Elimination Filter) 1
35, modulation frequency fD, BPF (Ba
nd Pa5s Filter) 136 and BPF1
FSK demodulator 13 that applies FSX demodulation to the output signal of 36
7 is provided.

The parallel-serial converter 131 and the series-parallel converter 138 include
A clock generator 139a is connected to measure the output timing of these. Additionally, the FSK modulator 132
and the FSK demodulator 137 are connected to an Oscillator (SC) 139b for modulating and demodulating them.

The filter 114 removes modulation frequency components f, .

The printing device 200 includes a printer mechanism section 20 that performs printing operations.
1, a printer control circuit 202 that controls the printer mechanism section 201, a printer interface 203, and a power supply device 1210.

The power supply bag fi210 includes an AC plug 211, an AC power cable 212, a power supply circuit 213, and a combination/separation circuit 22.
0 and a modulation/demodulation circuit 230. In addition,
The combination/separation circuit 220 and the modulation/demodulation circuit 230 each have
The above-mentioned information processing device 1, OO synthesis/separation circuit 120
The configuration is similar to that of the modulation/demodulation circuit 230.

Next, the operation of this embodiment will be explained.

First, the AC plug 111 of the information processing device 100 is connected to an indoor AC outlet. The power supply circuit 113 generates the necessary voltage within the information processing bag [100] and supplies it to each part.

Next, the printing device! 200 AC plug 211 is connected to the service outlet (power supply section) 115 of the information processing device 100.
Connect to. The power voltage from the indoor AC outlet is
AC power cable 112, filter 114, and synthesis/separation circuit 12 that constitute the power supply device 110 of the information processing device 100
0, the printing device 20 via the service outlet 115
0, is converted into an appropriate voltage by the power supply circuit 213 of the printing apparatus F200, and then supplied to each part within the apparatus.

When the information processing device 100 and the printing device 200 are activated, print data created by the information processing device 100 is output to the printing device 200.

This print data is output from the CPU 10I to the printer interface 103 via the bus 104, and is output to the output interface section 103 of the printer interface 103.
b to the parallel column converter 131 of the modulation/demodulation circuit 130. In the parallel column converter 131, the output interface section 1
The bit-parallel print data from 03b is.

Converts to bit-serial print data. It O# and 7/1 pp of this bit serial data are F
The SK modulator 132 modulates the signals to modulation frequencies f0 and fl, respectively. The modulated print data is amplified by the output amplifier 133 and then output to the synthesis/separation circuit 120. In the synthesis/separation circuit 120, the carrier wave fc is tuned by a tuning circuit formed by the secondary side 124 of the transformer 122, the capacitor 124, and the resistor 127, and then transmitted to the primary side 123 of the transformer 122, and then connected to the service outlet power source. It is applied to the power supply voltage on line 121. The print data applied to the power supply voltage is output from the service outlet 115 to the printing device 200 together with the power supply voltage.

The print data depends on the power supply voltage in the power line 116 connected to the service outlet power line 121, but since the filter 114 is provided here, the print data is transmitted via the AC power cable 112 and the AC plug 111. It does not flow into the indoor power supply system.

The print data is sent to the AC plug 211 of the printing device 200 and the
It passes through the C power cable 212 and is input into the synthesis/separation circuit 220 of the power supply device t210.

Here, from the power supply voltage, the modulation frequency f. , f are separated and output to the modulation/demodulation circuit 230.

In the modulation/demodulation circuit 230, the separated signal is input to the input amplifier 1.
The signal is amplified to a predetermined level at step 34.

From the amplified signal, the commercial power frequency fAc is removed by the BEF 135, other noise frequencies are removed by the BPF 136, and only the modulation frequency is changed to FSKl[1t13
It reaches 7. In the FSK demodulator 137, the modulation frequency f,...
f, respectively bit serial data LL Q II
and LL I IT. The demodulated bit serial data is converted into bit parallel data by the serial/parallel converter 138, and then sent to the printer interface 2.
03 to the printer control circuit 202.

The printer control circuit 202 activates the printer mechanism section 201 according to print data to perform printing.

If a paper break occurs during printing, this data is routed through the opposite route, that is, the modem circuit 230 of the printing device 200, the combining/separating circuit 220, and the AC power cable 212.
．． The signal is output to the information processing device 100 through the AC plug 211. The information processing bag H100 includes a service outlet 115, a synthesis separation circuit 120. C through the modulation/demodulation circuit 130, printer interface 103, and bus 104.
Leads to PUI O1.

In this way, various data such as print data can be transferred to an information processing device! 100 service outlets 115, printed! 20
0 AC plug 211 and AC power cable 212 ways to transmit and receive, so signal cables are unnecessary.
The wiring on the back of the device can be cleaned up and the aesthetics of the office environment can be improved. Furthermore, by simply inserting the AC plug 211 of the printing device 200 into the service outlet 115 of the information processing device 100, all the wiring between the information processing device 100 and the printing device 200 is connected. Forgetting to connect, etc.
It is possible to eliminate the root cause of a large proportion of problems during equipment installation.

Further, since data does not enter the indoor power supply system from the AC plug 111 of the printing apparatus 100, devices connected to the same power supply system will not malfunction.

Next, a modification of the first embodiment will be explained based on FIG.

In this modification, the signal connectors 106 and 206 to which the signal cable 207 is connected are connected to the information processing apparatus 100 and the printing apparatus 1.
200 and printer interface 1, respectively.
03, 203 are provided with changeover switches 105, 205 for switching between outputting the output from the modulation/demodulation circuits 130, 230 or outputting it to the signal connectors 106, 107.

With this configuration, data can be sent and received even if either the information processing device or the printing device is equipped with a composition/separation circuit and the other is not, and compatibility with devices that are not equipped with a composition/separation circuit is achieved. You can maintain your sexuality.

Next, a second embodiment will be described based on FIG. 4.

In this embodiment, the information processing apparatus 100 of the first embodiment includes a plurality of service outlets 115a.

115b and 115c are provided and made to correspond to them.

A plurality of filters 114a, 114b, 114a, synthesis/separation circuits 120a, 120b, 120c, modulation/demodulation circuit 13
0a, 130b, 130c, printer interface 1
03a, 103b, and 103c are provided.

For example, a laser printer is connected to the service outlet 115a, a wire dot printer is connected to the service outlet 115b, and a color printer is connected to the service outlet 115c.

Thereby, each service outlet 115a.

Through 115b and 115c, along with the supply of power supply voltage,
Since data can be transmitted and received, the number of cables connected to the information processing device 100a can be reduced, and the installation environment for OA equipment can be significantly improved.

In this way, when connecting multiple printing devices to one information processing device [100a, each printer interface 10
3a, 103b, 103c and each modulation/demodulation circuit 103a, 1
The specifications of modulation method, data format, etc. in 03b and 103c are unified. Then, either define the communication procedure for each printing device, or add recognition data to the data to be sent to recognize the sender, and have the receiving side recognize the sender based on this recognition data. It is preferable to In the information processing device 100a, a recognition data addition means for adding recognition data to transmission data and a transmission source recognition means for recognizing a transmission source based on the recognition data are a memory 102 and a CPU l01 that operates based on a program in the memory 102. It consists of
In the printing device, C (not shown) in the printer control circuit
It can be configured with a PU and memory.

In this way, by predetermining specifications, communication procedures, etc., a device that receives transmitted data can recognize the source of the transmission. Furthermore, service outlets 115a, 115b.

115c, the user can plug in the AC plug of the printing device without worrying about the positions of the multiple service outlets 115a, 115b, and 115c. , usability can be improved.

Note that in this embodiment as well, a signal connector and a changeover switch may be provided as in the modification of the first embodiment.

Next, a third embodiment of the present invention will be described using FIG.

Printing equipment of this example! 200a is the printing device of the first embodiment! 200 further includes a service outlet 215, a synthesis/separation circuit 220a that outputs data together with the power supply voltage to the service outlet 215, and an AC power cable 2.
A power supply line 216 that leads the power supply voltage from 12 to a synthesis/separation circuit 220a, a low-pass filter 214 provided in the power supply line 216, a modulation/demodulation circuit 230a, and a peripheral interface 203a are provided.

Connect the AC plug 211 of the printing device 200a to the information processing device 1.
．． Connect to the service outlet 115 of OO. It is assumed that, for example, an AC plug of a paper feeding device (not shown) connected to the printing device is connected to the service outlet 215 of the printing device i200a.

Data from the information processing device 100 is sent to the AC plug 211.
and the printing device [20
It is taken into Oa. This data is the combination/separation circuit 2
It is separated from the power supply voltage at 20, passes through a modulation/demodulation circuit 230, a printer interface 203, and is connected to the printer control circuit [20].
Given to 02. The printer control circuit 202 drives the printer mechanism section 201 based on this data to print.

The paper feed data is output from the printer control circuit 202 to the peripheral interface 203a, modulated by the modulation/demodulation circuit 230a, and then output to the combination/separation circuit 220a. In the synthesis/separation circuit 220a, the power supply voltage from which the signal component from the information processing device tloo has been removed by the filter 214 and the modulated wave created by the modulation/demodulation circuit 230a are superimposed,
This is supplied to the service outlet 215. The paper feeding data is output to the paper feeding device via the service outlet 215 together with the power supply voltage. Note that the information processing device 1
The data from 00 to the paper feeder is.

- After being imported into the printer control circuit 202, the peripheral interface 203a and the variable t
The signal is sent to the paper feeder via the R subcircuit 30a, the combination/separation circuit 220a, and the service outlet 215.

In this embodiment, peripheral devices can be connected in cascade to the printing device 200a, so even if the information processing device 100 has a small number of service outlets, additional peripheral devices can be connected in addition to the printing device 200a without increasing the number of signal cables. can do.

Next, a fourth embodiment of the present invention will be described using FIG. 6.

In this embodiment, a plurality of information processing systems A, B, and C are applied to an actual office using the various embodiments described above.

Information processing device A is information processing device 100 of the first embodiment.
and the printing device 200, the information processing system B
shows the information processing device 100a of the second embodiment and its service outlet 115a.

The information processing system C is constructed with a plurality of printing devices 200 of the first embodiment connected to the printers 115b and 115c.
Information processing device 100 of the first embodiment and the printing device 200a and paper feed device 3 of the fourth embodiment connected thereto
00.

Information processing apparatus 100 of each information processing system A, B, C.
100a, AC plug 111 provided in 100,
111, 111 are AC outlets 11 a, 1 l b, 11 provided in the same indoor power supply system 10.
c.

In this way, indoor power supply system #! Even if multiple information processing systems A, B, and C are connected to 1o, each system A,
Since the information processing devices 100, 100a and 100 of B and C are provided with a filter 114, the data is
Through the indoor power supply system 1A10, other systems or
It will not enter other devices connected to the indoor power supply system and will not cause them to malfunction. Also,
As mentioned above, since each device is connected to each other only by an AC power cable, the number of indoor cables can be reduced. Particularly in recent years, when many OA systems have been introduced indoors, the effects of improving the aesthetics of the room by reducing cables, reducing system malfunctions due to poor connections, etc. are significant.

In the above embodiments, an information processing device and a printing device have been used as an example, but any device that sends and receives data to and from each other can be used, for example, an amplifier and a tuner of audio equipment, an amplifier and a cassette deck, etc. The present invention can be applied to:
Needless to say.

[Effects of the Invention] According to the present invention, since a synthesis/separation means for synthesizing and separating data to be transmitted and received into a power supply voltage is provided, a signal cable between an electronic device and a peripheral device can be omitted. Furthermore, since a filter is provided to remove the data carrier wave component from the power supply voltage supplied to the power supply section, equipment that receives power from the same power supply system will not malfunction.

[Brief explanation of the drawing]

1 and 2 are shown in the first embodiment, and the first embodiment is shown in FIG.
The figure is a block diagram of the information processing system, FIG. 2 is a block diagram of the synthesis/separation circuit and the modulation/demodulation circuit, FIG. 3 is a block diagram of the information processing system of a modification of the first embodiment, and FIG. FIG. 5 is a block diagram of an information processing apparatus according to an embodiment, FIG. 5 is a block diagram of a printing apparatus according to a third embodiment, and FIG. 6 is a block diagram of an information processing system according to a fourth embodiment. 10... Indoor power supply system, lla, llb, llc.
...AC outlet, 100,100a...Information processing device, 101-CPU, 101-.Memo lJ, 111°121...AC plug, 112,212...AC power cable, 113,213... Power supply circuit, 114° 114 a, 114 b, 114 c, 2
14-Filter, 115. 115a
, 115b, 115c. 215...Service outlet, 116...Power line, 120.120a, 120b, 120c, 220°2
20a...Synthesis/separation circuit, 124...Transformer, 1
30.130a, 130b, 130c, 230°230
a... Modulation/demodulation circuit, 131... Parallel column converter, 13
2...FSK modulator, 137...FSK demodulator, 1
38...Serial-to-parallel converter, 200, 200a...Printing device, 201...Printer mechanism section, 202...Printer control circuit section.

Claims (1)

[Claims] 1. In an electronic device capable of transmitting and receiving data to and from a peripheral device and supplying a power supply voltage from a power supply unit, the power supply voltage to which the data is supplied from the power supply unit; and a filter for removing frequency components of the data combined with the power supply voltage from the power supply voltage supplied to the power supply unit. and electronic equipment. 2. In an electronic device including a transmitting/receiving unit that transmits and receives data to and from a peripheral device, and a power supply unit that supplies a power supply voltage, the data is combined with the power supply voltage supplied from the power supply unit. a filter that removes frequency components of the data combined with the power supply voltage from the power supply voltage supplied to the power supply unit; and a filter that allows the data to pass through the transmitting/receiving unit. and a switching means for switching whether to pass the route through the synthesis/separation means or the synthesis/separation means. 3. The electronic device according to claim 1 or 2, further comprising recognition data adding means for adding recognition data to the data for causing the peripheral device to recognize the data transmission source. 4. In an electronic device capable of transmitting and receiving data to and from a peripheral device, the data is synthesized into a power supply voltage and is separated from the power supply voltage by means of synthesis and separation, and the peripheral device recognizes a data transmission source. An electronic device comprising recognition data adding means for adding recognition data to the data. 5. The electronic device according to claim 1, 2, 3, or 4, further comprising a source recognition means for recognizing a source based on recognition data in data received from the peripheral device. 6. The electronic device according to claim 1, 2, 3, 4 or 5, further comprising: a CPU that performs predetermined calculations and outputs parallel data; and converts the parallel data into serial data and converts the serial data into the combination and separation. Information characterized in that it is provided with a parallel conversion means for outputting the data to the CPU; and a serial-parallel conversion means for converting the data separated by the combining and separating means into parallel data and outputting the parallel data to the CPU. Processing equipment. 7. A printing device, characterized in that the electronic device according to claim 1, 2, 3, 4, or 5 is provided with printing means for printing based on the data transmitted from the peripheral device.