JPS62128243A - Digital data subscriber's private equipment - Google Patents

Abstract

PURPOSE:To allow the titled equipment to cope with a small scale medium by allowing outgoing/incoming call via a distribution control section and an exchange control section. CONSTITUTION:A program prepared in advance is read from an FD 32 as an external memory by an FD control section 31, data are sent to a main memory 20 and whether or not each system is normal is checked by a processor 19 and started. Then what is to be operated from the program of a main memory is displayed on a display section 28 via a display control section 27, a key is depressed from a keyboard 34, it is informed to the processor 19, converted into a code and displayed as a character. A DMA control section 21 is operated during this time, interruption is generated to each control section, the program is loaded an operated. A printer control 29 of a printer 30 informs it to the processor 19 according to the command from the keyboard 34 so as to extract a character font memory or dot coordinate provided in the printer controller 29 and to print it out.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention enables so-called /'P computer communication and document communication for communicating data created by a computer, word f processor, etc. The present invention relates to a digital data home device that can be connected to a computer and use various types of media at the same time.

(Prior art) Conventional data home equipment includes those that use analog public telephone lines and dedicated lines, and those that are compatible with networks such as DDX (digital data exchange) networks and Dinotal data transmission networks. . Nowadays, when multimedia communication is desired, devices that use analog lines are being converted to digital devices due to the improvement of communication quality, expansion of line usage, economical cost of communication channels, etc. due to advances in digital transmission technology. Meanwhile, the Dinotal PBX exchange was developed to improve the flexibility and quality of Ilo installation, which uses analog communication lines, and has made it easier to use in-house equipment within the company.

Connections within the company are made under PBX conditions, but connections with the outside world use various lines such as dedicated lines and public lines, and communication speeds and communication procedures also differ depending on the various devices. Recently, various types of personal computers have appeared, and various measures have been taken, such as connecting communication adapters to enable communication between these different models, and standardizing data files to JIS standards to enable communication between files. There is. On the other hand, terminals with communication functions have different communication speeds and line communication procedures depending on the terminal type, so it becomes necessary to have a line for each in-house device, which not only increases facility construction but also increases the use of OA equipment. is having a negative impact on. For this reason, an advanced information and communication system (INS) was developed that uses a digital data transmission network to communicate by converting the communication line into a digital network.64. k
b/s voice and fax, 16 kb/s VCF
A method is used in which terminals are divided into classes for each communication speed, such as AX and data, and ping-pong transmission is performed within a digital network. FIG. 6 shows an embodiment of the current INS. (B) is an example in which two 64 kb/s audio devices (telephone/O1 and data terminal/O2) are installed, and since they cannot be used at the same time, the terminal priority method of line loop ON is used by switching. taking it. (b), (c)
64 kb/s of telephone/O1 and terminals other than 64 kbit/O2. /O・1 (Example 32 kb/s, 16
kb/s or 8 kb/s) to enable simultaneous communication.

These devices have a 4-wire interface between the DSU and the terminal, and their use is limited in the 80 kb/s range, which naturally limits their configuration. In this way, two in-home devices can be used with one line, which improves line usage efficiency and makes line installation work more economical than analog networks, making multimedia possible.

(Problems to be Solved by the Invention) However, if the device having the above configuration is to have, for example, four or more types of terminals of the same model or different models, it is necessary to increase the number of lines accordingly. Currently, digital communication networks include metallic wires (existing networks) and optical fibers, but the former has lower transmission efficiency than the latter. Furthermore, as is well known, the latter method requires more multiplex communication due to data compression than the former method, and the amount of communication is also extremely different. Therefore, the use of optical fibers becomes essential as multimedia increases. Therefore, in order to support multimedia digital communications, the present invention uses optical fibers to multiplex compressed data, freely connects various terminals with terminals in the premises, and utilizes a digital computer. and high-priced dedicated P.
The purpose of the present invention is to provide a digital data in-home device which is a low-cost alternative to a BX exchange, is compatible with small-scale media, and aims to activate the functions of the main unit.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a home device having a data communication function that includes a multi-task processor configuration and a distribution control unit that distributes digital lines and analog lines. , an exchange control function consisting of these lines and an I/O device connection control section, and a mechanism section that has a subprocessor and controls the display section, two key data sets, the printer section, the external memory section, etc., and inputs and outputs data. and the decomposition control section,
It is designed to allow calls to be made and received via the exchange control unit.

(Function) With the above configuration, the present invention has both a dedicated communication system that can be accessed by multitasking and multiple users, and a local system function, so that data created on a digital terminal can be used simultaneously within the premises. , message communication or video connection for on-premises TV service. In addition, it has a 2-wire and 4-wire switching function for current analog terminal connections, and can make multiple connections within the premises and with central office lines, including the ability to connect via software.

(Embodiment) FIG. 1 is a block diagram showing an embodiment of the present invention. In the figure, 1 indicates an analog network, and 2 indicates a digital network. 3
, 4 is an analog network trunk circuit, digital trunk circuit, 5 is a communication switch circuit, 6 is an I/O control section,
7 is a PCM time division control unit, 8 is an I/O control unit, 9 is a switching control unit, loa is a main path circuit, 11 is a main processor, 12 is a clock generator, 13 is a main memory unit, 14 is a processor connection interface unit, 15 is a diagnostic setting unit, 16 is a call time recording control unit, 17 is a terminal device interface, and 18 is a terminal device 18 for in-house use such as a telephone, FAX, ZF computer, etc.
a to 18n are connected. The functions and operations of these will be explained below.

The analog network 1 is a two-wire signal line connected to nine station lines from a main distribution board (not shown), which temporarily enters the A trunk 3 and connects to the I/O control unit 6. The I/O control section 6 is composed of a station line interface module for the digital network 1 and the analog network 2, and performs control of communication procedure level 2 and below. This module is assigned a separate 8-bit processor that can handle each extension.

The connection method with the extension line is a two-pair star-one connection format, and the signal transmission method in the extension connection is the di-notal transmission method. In addition, the I/O control unit 6 is equipped with a co-op and is connected to a known space division call bus, and is connected to the digital line 2 so that it can be used during a telephone call, and is connected to the D trunk 4 by a 4-wire cable. No busy bypass circuit, A/
A 2-wire, 4-wire conversion circuit using a 2-chip circuit, a D/A converter, and a D/A converter is connected to an analog network connection section, making it possible to connect digital and analog signals. The I/O control units 6 and 8 are basically the same, but the former performs incoming call detection, information reception, information output, communication monitoring,
In the case of a station, the controller 8 sends out a busy tone, and in the case of a station, the controller 8 controls the terminal, a line interface circuit (not shown in detail), and a common resource circuit, and detects a call, receives information, receives a ringing signal, monitors communication, and sends out a busy tone in the case of a station. Main processor 1 for sound transmission, etc.
It issues processing requests to the main processor 1 and controls the I/O control units 6 and 8 and the line interface circuit according to instructions from the main processor.

Like the I/O control unit 8, the switching control unit 9 includes a line interface circuit (not shown), a microprocessor for controlling a common resource circuit, a clock counter, and a master clock generation unit, and performs information translation, route selection, and outgoing line processing. Performs selection, called party testing, call path setting, communication speed division control, and call path disconnection recovery.

Main bus circuit/O a c, system multi/4,
', 4 interfaces, and each of the control units 6, 7.8 is
Connects to the mass circuit/Oa, and after the main processor 11 analyzes various information generated within the system and determines processing procedures, requests execution to the registers in the related I/O control units 6 and 8. do. The control units 6, 8 have an 8-bit microprocessor, include a memory and a programmable timer, and are connected to the main processor 11 via an input register. This timer generates the timing necessary for program processing. A processor that performs a control section of level 2 or lower is connected to a control bus of a main processor 11 (hereinafter referred to as MP) via a register included in the I/O control section 6, and a processor included in the MPll and I/O control section 6 (hereinafter referred to as PP) is activated and executed by an interrupt instruction included in MPII. This MP
II is an interrupt control unit (not shown), a programmable timer,
It consists of O basic parts such as ROM, RAM, etc., and performs operation management related to switching control and call processing. In the example, i-80
286 is used. The communication path system is space-divided for analog systems, and the digital system in general is configured with a single-stage time division switch.The trunk connected to the communication path is a station line module of the I/O control unit 6, and an I/O control unit 8. Each trunk is connected to the switch circuit 5 via a switch bus, and the switch bus consists of 8-pin parallel audio information, a timing clock, etc., and each trunk has a terminal corresponding to a fixed time slot. Transfers assigned audio information. Upstream (transfer from each trunk to the switch circuit unit 5: Read) and downstream (transfer from the switch circuit to each trunk: Write) information is performed on the same bus line in a time-sharing format (ping-pong transmission). . In addition, each module is connected by a bus interface that includes a timing clock supply for specifying time slots. The time slot corresponding to each trunk is determined by decoding the timing clock for each trunk. In this clock system configuration, a master clock included in the switching control section generates a required clock and supplies it to each monolayer.

If there are station lines in communication state, one of them is selected and the master clock is cycled to that station line by phase synchronization, thereby achieving network synchronization with the device 18.

For time-division transmission, a 4-wire cable is used, with two cores used as T wires for transmission signals, control signals, and data signals, and the other two cores as R wires used for reception signals, control signals, and data signals. Transmission loss and frequency distortion when a plurality of analog connections are made are corrected by a trunk correction circuit included in the I/O control unit 8.

Clock 12 is a 16-bit register for timing each highway. Main memory 13
is a control memory for operating each control unit and for storing management data for each terminal, and is a central line interface module for the I/O control unit 6 and an extension line interface for the 1/O control unit 8. 16-byte data is stored via the module's renostar. Also, the input/output ports cannot be connected independently to the system common bus /Oa and the switch bus, /? A distributed control system is programmed to prevent interference between the stations, and this is done using the clock 12. Therefore, MPI
Between the I and the I/O controllers 6 and 8, a scanning system is used for each clock to minimize the waiting time on the transmitting side. The processor connection interface 14 serves as an intermediary between the private processor 19 and MPII. The setting and diagnosis control unit 15 is used for installation or maintenance by inputting setting data for each circuit board (including switches) and performing DMA (direct memory access) to determine the location of faults in communication system circuits (including switches). program runaway, gut lock, data transfer of each port,
The date setting (DTC) board mounting status, each station line status, hold music, and other tones can be diagnosed. These can be executed by a utility program by inserting an F'D (flexible disk), which will be described later, via the local bus/Ob. The call time storage control unit 16 stores Ilo 18 (18a to 18n) of all interfaces.
) It monitors and records the communication time of the terminal, and this value can be retrieved from the memory of the call time storage control section 16 via the print control section 29, which will be described later, and can be printed out. The terminal device ink face 17 is an interface control unit for connecting various terminals 18a to 18n and exchanging communications with the terminals.

Note that a power supply unit (not shown) supplies commercial power (AClooV) to each circuit including the switch system. When an extension telephone is connected, 24 V DC is supplied from this control section. Furthermore, in order to improve the ground balance of the extension signal transmission system, the 5V system used in the switch control system and the 24V system used to supply power to the extension terminals have separate circuit configurations. Although power failure backup is not shown, a changeover switch can be used to switch to a battery backup power supply circuit that uses storage batteries.
In the event of a long power outage, the power supply backup is stopped before over-discharge occurs, and the main channel is cut-through connected to the terminal of the power outage telephone to switch to the local power supply system. .

Note that when the power switch of this device 18 is turned off (normally, the structure is such that power is supplied only to the CPU, but in this case it means the main power switch), battery backup is not performed and the telephone line is turned off. Only station power supply is possible.

MPII interrupts include office line signal interrupts, extension signal reception interrupts, timer interrupts, maintenance interrupts, etc. When this digital home device 18 itself communicates, maintenance interrupts are used to interrupt. is generated and made directly readable by MPII.

A plurality of interrupt sources are generated for station line and extension signal reception interrupts, but the interrupt signal lines of each monorail are combined to form an interrupt signal for each group. The selection of interrupt sources within the same group is performed by skinning the input/output renostar of each monoyl individually for each clock. The extension number of each terminal, system data such as service class (terminal class), speed dial number, etc. are stored in a rewritable EEPROM, and the program is stored in the EPROM. Memory capacity is 8KB for the former
, the latter is 48 KB. In addition to the function of creating timing necessary for program processing, the timer for MPII has the function of a runaway prevention timer, and MPII resets the timer at a fixed cycle or less to reduce errors. If this is not executed due to a runaway processor, an interrupt can be generated from the timer.

If the timer overflows due to runaway of the process, an abnormal interrupt is generated, and the abnormality recovery processing program is activated to recover. System data can be registered or changed by entering the registration mode and loading a utility program from the digital home device 18. The counter for the switch circuit 5 is an 8-bit counter that divides the frequency of the I MHz clock in the switching control section 9. The counter output value at each point in time corresponds to the time slot number handled by the switch at that time. The counter initializes its counting operation every time the 8 kHz clock of the master clock in the switching control section 9 rises, and makes the operating frame period of the switch coincide with 8 kHz. One time slot is 1 .mu.s, and the multiplicity of switches is 125 .mu.s in principle. Each time slot period consists of a first half Read cycle and a second half Wr j t e cycle, in which the voice data of the trunk corresponding to the time slot number is transferred to the channel memory included in the switch. In the latter case, voice data is transferred from the call memory to the trunk. Cycle switching between the holding memory and the call memory in each cycle is performed according to the clock of the main processor.

Access from the main sensor to the holding memory is switched according to the output of the switching control section 90 counter.

Reading of held memory data is executed between the child circuit 5 and MP11.

The master clock generates the necessary speed clocks for each terminal. This master clock section is composed of a mask line selection circuit and a phase synchronized oscillation circuit. supply Further, in the former case, a received signal that has been primarily selected by the office line module in the I/O control section 6 is input, and the final selection of the class, etc. for this signal is performed.

It also generates a clock whose speed matches that of the input received signal, thereby realizing network synchronized operation of the device.

If there is no received signal, a predetermined clock is generated.

The master clock generation section uses 5.12 MHz, which is twice the regular clock, to suppress signal transmission loss during switching.
The output is frequency-divided into A.

The office line monoyl consists of a processor input/output register, a transmission control section, a coupling line section, a manual latch section, an output latch section, a serial/parallel conversion section, a timing decoder, a bus buffer, a clock selection section, and an interface section 1.
7. Line-by-line information channel switch has a multiplexing/decomposition function between paths (described above) and a protocol control function at level 2 or below.

The communication path system of the central office line module converts the 64 kb/s serial information supplied from the transmission control section into 8-bit NOC, multiplexes it onto the switch bus of the switch circuit 5, and supplies it to the switch circuit 5 section. Sui again.

The 8-bit parallel information multiplexed on the bus is extracted, converted to 64 kb/s serial information, and supplied to the transmission control section. The time slot in which each line should input and output information to and from the switch circuit section 5 is determined by decoding the color/return output of the switch section in each module.

The office line interface section includes a coupling circuit section that separates/superimposes the transmission signal and the DC signal for starting/receiving calls, and a signal transmission driver/
It consists of a transmission control unit that performs synchronous extraction of receiver transmission signals, frame assembly/separation, communication control signals, and error control of data signals.The transmission control unit is operated in driver/receiver and slave mode, and the operating clock is MpH.
Use a master clock to operate the The transmit CMI signal output from the receiver is supplied to the driver via a register. Signals are taken out from this register so as to always maintain a constant phase with respect to the bit phase of the line received signal, and mask line switching prevents fluctuations in the bit phase of the transmitted signal. These central line modules are connected using balanced double current circuits with transformer coupling.

The extension interface unit provides an internal terminal interface function, a multiplexing/decomposition function of information between the line string information channel and the switch bus, and a protocol control function of level 2 or below. Protocol terminals can be accommodated at any terminal. The extension terminal interface has the same configuration as the central office line module section except for the clock selection section described above. The transmission interface section includes a dedicated transmission LSI, driver/receiver, and hybrid I (not shown).
DC (HIC-≠) and a line transformer are used, and direct current is applied to the interface line via a choke coil. This dedicated LSI is operated in master mode, and the master clock is used as the operating clock for this LSI. The current supplied to the terminal in this device is 20 mA or less, and the power is supplied from between the center taps of the line-side winding of the line transformer.

The switch bus that connects the switch circuit unit 5 and each trunk circuit in the extension communication path system has a complete path configuration including timing information. The time slot in which the switch bus and voice data should be input to the office line and extension line interface is determined by decoding and determining the received signal from the address information in each module, and the received signal from that line is supplied to the master clock generator. A comparison of synchronization between extension lines and central office line interfaces is shown below.

In other words, the matching period of the wiring and address information at the module insertion position is assigned to that module and becomes a time slot, and the time slot used by each module is automatically changed when the module is inserted into the card slot. Uniquely determined.

A master clock used for signal transmission control is generated by a master clock generation section and supplied to the extension office line and switch section.

This clock generator is in a free-running state where it simply divides the original clock when there is no communication with the office line, but when there are office lines, it selects one of the office lines and Generates a clock synchronized with the received signal from the central office line.

For mask line selection, initial selection is made for each line and final selection is made using the master clock. Whether or not a line is in communication is determined based on the synchronization state output signal of the transmission LSI of each line.

The selection logic is that a counter is provided in the master clock section for each line accommodated in the central office line, and each line is scanned according to the counter output, and if communication is in progress, the counter operation is stopped at this point, and these main clock lines are scanned. In this configuration, it has a communication terminal connection function, does not process the contents after connection, but performs monitoring etc. as shown in the connection diagram at the time of incoming call in Figure 2, is controlled by software, and is connected via switch memory. have a function. Data transmission is performed digitally. Internal transmission is 5,
80kb of data using 12 MHz highway
/see, the multiplexing of this system is done in two layers: the first layer is the local highway, and the second layer is the /l-sou-zo-highway. Eight local highways were converted to parallel PCM, a total of 128 channels were multiplexed, and this equipment was used to enable extension connections. Third
The figure shows the highway transmission format. The transmission signal uses a known CMI code.

When connecting multiple types of digital terminals, data is compressed and transmitted in proportion to the terminal class. The format is an /O bit structure (not shown), and the first pit is a frame bit, and one multiframe consists of several frames. The data is an 8-bit PCM signal, and the remaining 1 bit is used in a time-division manner for signals and information from the terminal. Call processing for input data is performed by a program, divided into various terminal classes, and controlled using tables. Fourth, the structure of the analysis table for each terminal is shown. These tables include a system table and a management table, and the former includes file storage of various necessary conditions such as user registration area, boat type, and time. The latter is an area for registering the call status of each port, dial accumulation, incoming calls, outgoing calls, connections, etc. This table is mainly used for call processing and exchange switch connection processing.

FIG. 5 shows a call control sequence in this embodiment, and communication is performed in such a sequence.

Having described the communication system above, the configuration and functions of the in-home equipment will now be described with reference to FIG.

19 is a local processor, and in this embodiment, 1-801
I am using 86. 20 is a 512KB memory section, 2
1 is a DMA control section, 22 is an interrupt control section, 23 is a date and time setting control section, 24 is a timer section, 25 is an LED control section, 26 is a speaker control section, 26' is a speaker, 27 is a display control section, and 28 is a In this embodiment, a 12-color display is used in the display section.

29 is a printer control unit, 3o is a printer, 31 is an FD control unit, and 32 is an FD that stores various programs and data. 33 is the keyboard control section, 34 is the keypad section 33
It is connected to the keyboard control section of the controller via a serial interface. 35 is a communication control unit, and the main home device 18 is 16k.
It is composed of digital data home equipment used in B/S, has a built-in driver/receiver used for communication, and is connected to an interface 17C, and performs procedures based on CCITT with an interface based on a well-known CMI code. 36
is general-purpose R8-232C interface, 37 is GP-I
It consists of a B interface. The operation of each part will be explained below.

The processor 19 is a multi-task multi-user access processor, and the I/O instructions of the CPU unit are processed by a timer 24.
, interrupt control 22, machine check display (display section) 28, switch, DMA control section 21, communication control section 3
Perform this for the driver/receiver etc. on 5. The DMA control section 21 controls input/output devices such as the FD control section 29 and the printer control section 29. The timer 24 is a programmable timer device, and the timer counter is a 16-bit long renostar and has various timers. A part of it is the communication control unit 3
5 basic clock. The LED control unit 25 is
A drive circuit is provided to turn on/off the light emitting diode in response to an OUT command from the CPU unit 19. This diode is mounted on an operation panel (not shown) of the CRT 28 for the purpose of displaying the status of the system. The speaker control section is equipped with a drive circuit that generates sound according to instructions from the processor 19, and this circuit uses a programmable timer 24 that controls frequency and time, and has a length of 16 bits or 32 bits. ing. The CRT control unit 27 performs code refresh,
It performs horizontal and vertical synchronization control by controlling the dot refresh operation and generating synchronization signals, and displays characters and graphics.

The printer control unit 29 outputs print data and control codes to the printer and controls each operation of the printer. The printer 30 and the control unit 29 are connected through a Centronics interface. The printer control unit 29 also detects the status information of the printer 30 and controls the printer's operation panel (not shown). Note that the printer 30 in this embodiment is a 24×24 dot matrix wire dot printer. The FD control unit 31 uses a controller that can control up to four units.

Data transfer is performed in DMA mode, and this control is performed by the aforementioned DMA control section 21. The processor 19
controls the FD control section 31 and the DMA control section 21 in units of bytes, and also transfers data in the DMA mode in units of bytes. The hardware does not have a code conversion function, and code conversion is performed by software.

The keyboard control unit 33 converts the position data (serial data) of the key 34 into parallel data, and converts the data transferred to the processor 11 etc. via the processor 19 and written by the processor 11 into serial data. Convert and output to key date 34. When ready to transfer data to the processor 11, it performs data input and output control such as generating an interrupt to the CPU. Also, each key has a key attribute so that the effect of the key can be controlled.

The communication control unit 35 is a line control unit that performs communication control of the data home device 18, and performs network control from level 1 to level 3. The procedure is to perform data link control using HDLC. This data is Il as a local function extension of the home device 18.
R8-2320. by using a general-purpose interface LSI to add o. A CP-IB interface is added. I have talked about these configurations and functions,
The operation will be briefly described since personal computers and data home devices are currently well known.

The outline of the operation of this local processor connection unit, which is a private computer, is as follows: A pre-prepared program is read from the FD 32 as an external memory by the FD control unit 31 that controls the flexible disk drive, and data is stored in the private memory 20. At this time, in order to operate each control section when starting up the system, the IPLROM on the local processor 19 is operated, and the processor 19 starts up while checking whether each system is normal. Next, the display control unit 27 issues a display instruction to the display unit 28 to display what to operate from the program in the non-memory, and in accordance with this, the operator presses a key from the key date 34 to The data of the pressed location is notified to the processor 19 via the KB/C, this data is converted into a code, and the code is extracted as characters from the screen memory on the display control unit 27 and displayed. DM during this time
The A control unit 21 operates to generate interrupts to each control unit between the processors, load a program, and operate it. In the printer 30, the printer control 29 notifies the processor 19 in accordance with instructions inputted from the keyboard 34, and operates according to the instructions, drawing out the character font memory and dot coordinates provided in the printer controller 29 and printing. There is.

As shown in the above configuration, a 16-bit system computer is used on the local processor side, but as mentioned above, during normal use of this device, the main processor side functions as a switching device. Therefore, when using the device 18 locally, it becomes an A-sonal computer, and this device is used to create word processors, in-house OA support programs, centrally manage data, etc.
It can be stored in memory. In other words, terminals 188-1
If 8n is a computer, data created at different locations can be transferred to the FD of the main device 18 via an extension switch. Also, on the contrary, the F of the main device
Pull out the necessary data from D and send it to each terminal 18a to 18.
It can also be used as a workstation, allowing you to view the images freely.

In this embodiment, the CMI code format is used in the transmission interface section, but it goes without saying that AMI codes, sequence formats, and protocols conforming to the CCITT standard may be supported and used. Furthermore, although analog telephone connections were made using space division, it is also possible to do everything by time division, and even transfer control codes and audio data by time division, and image information by space division. Needless to say, the method is not limited.

(Effects of the Invention) The structure described above combines a dedicated communication system and local functions that allow multi-tasking and multi-user access, so data created on a digital terminal can be used simultaneously within the premises, message communication or It becomes possible to provide on-premises TV service through video and connection. On the other hand, by switching the line, the installation of the station line can be omitted and construction costs can be reduced.

In addition, in this device, there is a unit that performs communication speed classification control in the switching control section, but if everything is digitalized (network), the communication speed is N bit / s by using an arithmetic processor to identify the terminal class. It is now possible to connect calls using a digital memory switch, including the type, and because it uses a distributed method, it is expandable, such as being able to connect to various terminal ports using a mixed asynchronous and synchronous transmission format. There are also advantages to In addition, for current analog terminal connections, 2-wire 4
It has a line switching function and can be connected via software, allowing multiple connections with premises and office lines, increasing the amount of traffic for this data premises equipment. It has the great advantage of being revitalizing.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of the digital data home apparatus of the present invention, FIG. 2 is a connection diagram when a communication call is received, and FIG.
4 is a diagram of a data highway transmission format, FIG. 4 is a configuration diagram of an analysis table for each terminal, FIG. 5 is a diagram showing a terminal connection sequence, and FIG. 6 is a block diagram of a conventional advanced information communication system. 3... Analog network trunk circuit section, 4... Digital trunk circuit, 5... Communication switch circuit, 6...
・I/O control unit, 7... PCM time division control unit, 8...
- I/O control unit, 9... switching control unit, /O... main path circuit, 11... main processor unit, 1
2... Clock generator, 13... Main memory section, 14... Processor connection interface, 15
. . . Diagnosis setting unit, 16 . . . Call time recording control unit, 17 . . . Terminal device interface, 18 .
9... Private processor, 20... Memory section, 21... DMA'' control section, 22... Interrupt control section,
23...Date and time setting control section, 24...Timer section, 25
...LED control section, 26...Speaker control section, 27
...Display control section, 28...Display section, 29...Printer control section, 30...Printer, 31...FD control section, 32...FD, 33...Keyboard control section, 3
4...Keyboard section, 35...Communication control section. Connection diagram at the time of incoming call No. 2 (!1 (1) Suit e/Kan'7 Eifomanoto (2)
Whistle 3r indicating local 79 way format highway transmission format! g Analysis table structure by terminal Figure 4 Diagram showing connection sequence Figure 5 (in-home control device) Block diagram of conventional advanced information communication system Figure 6

Claims (1)

[Claims] In a home device that is equipped with a private branch exchange function that forms a communication path, and has the function of specifying and confirming a communication partner, exchanging data, and further inputting and outputting data, there is provided a processor configuration having a multitasking configuration. , a distribution control unit that distributes digital lines and analog lines, and an exchange control function consisting of a control unit for connecting these lines and I/O devices, and a subprocessor, including a display unit, keyboard unit, printer unit, external memory unit, etc. What is claimed is: 1. A digital data home device, comprising: a mechanical section that controls the data input/output; and a mechanism section that controls the distribution control section and the exchange control section, and is capable of making and receiving calls.