KR950003729B1 - Adaptor for telemetering - Google Patents

Abstract

The adaptor equipped on the PC sending the hand written characters, pictures and drawings comprises an interface means (20) interfacing an adaptor (100) and a PC (11); input/output control means (22A,22B) communicating parallel data with PC (11) and serial data with I/O devices; a channel selecting means (25) selecting the modes of the telewritting channel or the ordinary channel; junctions (26,28) interfacing the handwritten input device and the PC peripheral devices; a gain/mode control means (31) adjusting the compressed data gain and selecting the external telephone line or the internal hand cell; hybrid circuits (34A, 34B) adjusting the transmitting signal level and; the telephone circuits including a DTMF transmitting/receiving means (30), a ring signal detector (36) and a tone ringer (38).

Description

Telling Adapter System

1 is a schematic diagram of a general telewriting dedicated system.

2 is a schematic diagram showing a connection relationship between the present invention's telling adapter system and PC.

3A and 3B are block diagrams of the telemetric adapter system of the present invention.

4 shows an embodiment of the gain and mode controller 31 in FIG.

5 is an explanatory diagram showing band division of voice signals and fill information on a transmission path;

6 is a table showing the format of a data transmission word in the present invention.

FIG. 7A is an operation mode state table of the superintegrating element 32 for telliting, FIG. 7B is a timer mode table of the superintegration element 32 for telliting, and FIG. Table showing attenuation amount of the transmission level adjusting unit 32A.

8A is a reception timing chart, and FIG. 8B is a transmission timing chart.

9 is a master / slave set signal flow diagram.

10A and 10B are transmission right signal flow diagrams.

* Explanation of symbols for main parts of the drawings

11: PC body 12: keyboard

13: monitor 14: printer

20: PC matching unit 20A: data buffer

20B: control signal buffer 20C: address decoder

21: clock signal generator 22A: first input and output control unit

22B: second input / output control unit 23: option input unit

24: line status display section 25: channel selection section

26: first interface matching unit 27: film input device

28: second interface matching unit 29: PC peripheral equipment

30: DFM receiver 31: Gain and mode control unit

32: super integrated device for telling 32A: transmission level adjusting unit

32B: Mode selector 32C: Band filter

32D: Modem 32E: Line Interface Section

32F: Bandstop Filter 32G: Tele Interface Unit

32H, 33: Adder 34A: First hybrid

34B: second hybrid 35: power supply

36: Forward signal detector

The present invention relates to a telewriting system that delivers handwriting information such as handwritten text, drawings, and figures using telecommunication means, and includes a handwriting input device, a public telephone network, and a hand cell through an adapter. The present invention relates to a telling adapter system that can be connected to a personal computer (PC) to perform a telling function.

In general, the tallying system is composed of a tallying body 1, a writing input device 2, a telephone 3, a monitor 4 and a printer 5, as shown in FIG. Looking at it as follows.

The telewriting body 1 compresses and encodes the fill information inputted through the fill input device 2 according to CCITT Recommendation T.150, converts it into an analog signal through a modem in itself, and then, from the telephone 3, It was able to communicate with the other party's voice and fill information by spatially splitting and combining 300-400Hz band that is allowed by the input voice and the telephone network.

However, since such a telliting system is dedicated to telliting, only the telliting can be performed and there is a problem in that it cannot be used for other purposes without using the telliting so that it is relatively inefficient.

In order to solve the above problems, the present invention has been made so that the telephony can be performed by connecting a handwriting input device, a public telephone network, and a hand cell through an adapter to an existing PC, which will be described in detail with reference to the accompanying drawings. same.

2 shows a connection relationship between the adapter of the present invention and the PC. As shown in FIG. 2, the PC input unit 11 through the adapter 100 is provided with a handwriting input device 27, a hand cell HS11, and a public telephone network. It is connected to a PC composed of a keyboard 12, a monitor 13 and a printer 14.

3A and 3B are block diagrams of the teleting adapter system of the present invention corresponding to the adapter 100 of FIG. 2, and as shown therein, transmission and reception of written information input and output through the adapter 100 of the present invention. PC body 11 for controlling the PC, a data buffer 20a, a control signal buffer 20B and the address decoder 20C is configured to perform the matching function between the PC body 11 and the adapter 100 The unit 20, a clock signal generator 21 for providing a clock signal to each of the system, and the adapter 100 performs parallel communication with the main controller of the PC main body 11, and serially with the input / output device. First and second input / output control units 22A and 22B for performing communication, an option input unit 23 for informing the main central processing apparatus of the PC body 11 of various options, and data transmission / reception status of each channel to be displayed. The line status display section 24 and one channel to the First and second interface matching units 26 and 28, respectively, used for connection of the channel selector 25, the fill input device 27, and the PC peripheral device 29 for external use, and telephone dialing. A DTP receiver (30) for inputting / outputting a DMF (Dual Tone Mutti-Frequency: DTMF) signal, a gain and mode controller 31 for controlling the gain of the signal through the system and the mode of the system, Transmission level adjusting section 32A, mode selecting section 32B, band filter 32C, modem 32D, line interface section 32E, band stop filter 32F, teleinterface section 32G, and adder 32H. And a super-integrating device 32 for telling, which synthesizes the handwriting information input from the handwriting input device 27 and the voice through the external telephone TE11 to the telephone network for communication. First and second hybrids 34A and 34B for adjusting the level of the signal inputted and outputted to the element 32; The power supply unit 35 for supplying power to the (HS11) side, the ring signal detection unit 36 for detecting a ring signal, and the system via its own hand cell HS11, or the public telephone network or the second hybrid 34B. 4 to 10 attached to the present invention constituted by a tone ringer 38 for driving a speaker SP11 when a ring-on signal is input from the ring signal detection unit 37 that enables a call when connected to the side. A detailed description with reference to the drawings is as follows.

First, when making a voice call, it is decided whether to use an external telephone TE11 through the option input unit 23 or to use a hand cell HS11 in the system, using an external telephone TE11. To operate the telephone switching relay RY1 with the control signal output from the gain and mode control unit 31, the switches RY11 and RY12 of the relay RY1 are connected to the external telephone TE11 and the public telephone network, respectively. Therefore, it is possible to make a voice call by operating in the same way as a general telephone.

In case of using the hand cell HS11 which is an internal telephone, first, the telephone call circuit unit 37 is operated as a second hybrid by operating the telephone switching relay RY1 with the control signal of the gain and mode control unit 31. And connect to the first hybrid 34A, match the impedance to a predetermined value (600Ω), and dial the desired number while the DTP receiver 30 is operated. When the other party responds to each other, a call is made. In this case, the first hybrid 34A, the line interface unit 32E, the band stop filter 32F, and the teleinterface unit of the superintegrating element 32 for telling 32G, the second hybrid 34B, and the switch RY11 of the telephone switching relay RY1 are connected to the telephone call circuit section 37 in succession.

In the case of using the hand cell HS11, the operation state of the incoming call is as follows. Since the telephone switching relay RY1 does not operate in the idle state, its switches RY11 and RY12 are connected to the second hybrid 34B. ) And the first hybrid 34A, respectively.

가 저전위로 출력하고, 이는 채널선택부(25) 및 제2입출력제어부(22B)를 통해 피씨본체(11)의 인터페이스요구포트(IRQ4)에 인가되므로 그 피씨본체(11)는 현재의 인터페이스상황을 인식하게 되며, 이때 상기 링신호검출부(36)에서 출력되는 링온신호에 의해 톤링거(38)가 구동되므로 사용자는 스피커(SP11)를 통해 전화가 걸려온 것을 인지하게 된다.At this time, when the incoming ring is input, it is detected by the ring signal detection unit 36, and the ring detection signal (from the ring signal detection unit 36) is detected.

Outputs at a low potential, which is applied to the interface request port IRQ4 of the PC main body 11 through the channel selector 25 and the second input / output control unit 22B. In this case, since the tone ringer 38 is driven by the ring-on signal output from the ring signal detector 36, the user recognizes that a call is made through the speaker SP11.

After recognizing the interrupt request signal, the central processing unit of the PC main body 11 reads the state register value of the second input / output controller 22B to check whether it is a ring signal, and then rings the signal on the monitor 13. Is displayed, and when the user responds by pressing the corresponding key on the keyboard 12, the telephone switching relay RY1 is turned on, so that the telephone network and the telephone call circuit unit 37 make the same call as in the case of the call. A call is made by forming a call.

Second, in the case of the filing communication, when looking at the transmission process, the user presses the corresponding key on the keyboard 12 and then dials in the same manner as in the case of voice call transmission to configure the call path.

The handwriting information written by the handwriting input device 27 has a transmission format as shown in FIG. 6 as a coordinate value, which is transmitted through the first interface matching unit 26 and the first input / output control unit 22A. 11) is provided in the central processing unit.

At this time, the central processing unit can receive data in both a polling method and an interrupt method, and the central processing unit uses the coordinate information inputted from the file input unit 27 to the zone of CCITT Recommendation T.150. Compression coding is performed according to a program after selecting one of a coding scheme (Zone Coding) and a differential chain coding (Differential Chain Coding), and the compressed coding information is provided by the second input / output controller 22B and the channel selector 25. Is provided to the super integrated device 32 for telling.

Accordingly, the modem 32D operates as a half-duplex FSK modem in accordance with CCITT Recommendation V.21. The modem 32D performs modulation and demodulation at 1650 Hz when the transmitting terminal TX is at high potential and 1850 Hz at low potential.

)를 저전위를 출력하며, 압축부호화된 필화정보는 그 모뎀(32D)을 통해 변조된 다음 어테뉴에이터(Attenuator)에 해당되는 송신레벨조정부(32A)에서 송신레벨이 적정수준으로 조정되고, 다시 라인인터페이스부(32E)를 통해 상대측으로 송출된다.Here, since the modem 32D is a half-duplex method, the transmission request signal (

Low-level output, and the compression-encoded written information is modulated by the modem 32D, and then the transmission level is adjusted to an appropriate level by the transmission level adjusting unit 32A corresponding to the attenuator, and then again on the line. It is sent to the other side via the interface unit 32E.

,

)에 저전위가 제공되므로 그가 인에이블되는 반면, 3상태래치부(31B)의 아웃인에이블단자(

)에 고전위가 제공되므로 그가 디스에이블 된다.At this time, in the case of manual operation on the gain and mode control unit 31 configured as shown in FIG. 4, when the switch S7 of the switching unit 31D is shorted, the enable terminal of the three-state buffer 31A (

,

Since the low potential is provided at), it is enabled, while the out enable terminal (3B) of the tri-state latch portion 31B

Is provided with a high potential, so he is disabled.

Accordingly, the automatic control by the program is not performed, and the value selected by the operation of the switch S0-S3 of the switching unit 31D is input through the three-state buffer 31A. The transmission level is changed as shown in FIG. 7C by being applied to (ATT? -ATT3).

However, opening the switch S7 of the switching unit 31D becomes the opposite of the manual operation, and the three-state latch unit 31B is enabled, and the three-state buffer 31A becomes an automatic adjustment by a program. In this case, the transmission timing chart is as shown in FIG. 8B.

On the other hand, in the case of receiving a call communication, a call path is formed in the same manner as in the case of an incoming call, and the call information is compressed and modulated by the same process as occurs in the other party. The transmitted picture information is demodulated in the modem 32D through the first hybrid 34A, the line interface unit 32E, and the band pass filter 32C. The demodulated digital information is transmitted to the channel selector 25 and the second unit. It is read by the central processing unit of the PC main body 11 again via the input / output control unit 22B.

Accordingly, the central processing unit classifies and decodes the read information according to a program, calculates and displays coordinate information based on this, and displays the information on the monitor 13. The generated information may be stored in a storage device as a file. Can be printed through the printer 14, and the reception timing chart is as shown in FIG. 8A.

On the other hand, in the transmission and reception of filing communication, since the modem 32D of the telecommunication super integrated device 32 is a half-duplex method, it is not possible to simultaneously transmit and receive filing information on a transmission line, thus transmitting accurate data in one direction. Transmission rights are recommended in CCITT T.150; As shown in Figs. 9, 10a, and 10b, the contents are a master / slave setup, a flow chart for data transmission in each mode, etc. The system transmits and receives data according to CCITT T.150.

)신호선이 저전위인 경우이며, 마크신호는 송신데이타(TXD) 신호선이 고전위인 상태이다.9, 10a and 10b, carrier detection is performed using carrier data (

The signal line has a low potential, and the mark signal has a high potential of the transmission data (TXD) signal line.

Third, in the simultaneous transmission and reception of voice and fill information, the present system of the voice and fill simultaneous transmission / reception method through the telephone network is configured to simultaneously transmit and receive voice and modulated fill information by dividing the voice band.

As shown in FIG. 5, the fill information of 1500-2000Hz is modulated by the modem 32D. At this time, the band filter 32C passes only the corresponding frequency band of the modem, and the voice signal is passed through the band stop filter 32F. Only the band other than the corresponding frequency band of the modem 32D is passed. The voice signal thus passed is synthesized by the adder information through the band filter 32C and the adder 32H, and then through the line interface unit 32E. It is sent to the other side.

On the contrary, the voice and the written synthesized signal transmitted from the other party are separated and demodulated only by the signal of the modem 32D through the band filter 32C, and then reproduced with the original written information, and the band blocking filter 32F is the modem 32D. The audio signal is reproduced by removing only the signal and passing the remaining band.

In this way, voice, written information using a telephone network can be simultaneously communicated, that is, a telewriting service.

) 를 제어하여 설정하는데, 그 방법은, 상기 이득 및 모드제어부(31)의 동작설명과 같다.Each communication mode uses the ports DRW, TEL of the telling integrated device 32 as shown in FIG.

) Is controlled and set, and the method is the same as that of the operation of the gain and mode control unit 31.

The timer mode setting of FIG. 7B relates to the control of the modem 32D characteristic of the superintegrating element 32 for telling. As shown here, each time is changed according to the timer mode setting value. And the same as in the mode control unit 31.

As described in detail above, the present invention provides excellent telephony services by simply adding an existing PC-Avon adapter when simultaneously communicating voice and written information, and using various functions of PCs. Functions can be changed or added, and the built-in telephone function and modem are provided, so that it can be used as a low speed dial-up modem in addition to the telling function.

Claims (1)

A first and second communication unit 20 which performs a burying function between the PC main body 11 and the adapter 100 and the PC main body 11 communicate with the parallel data and the input / output device maintains the serial data. First input / output control units 22A and 22B, a channel selector 25 for using one channel for telling and other uses, a first input for connection between the fill input device 27 and the PC peripheral device 29; A gain and mode control unit for controlling the gain of the data encoded by the two interface matching units 26 and 28 and the PC body 11, and selecting an external telephone TE11 or an internal hand cell HS11. (31), the superintegrating element (32) for telecommunication to synthesize the handwriting information inputted from the handwriting input device (27) and the voice via the telephone TE11 into a telephone network for communication, and to adjust the transmission level. First and second hybrids 34A and 34B, DFM receiver and receiver 30, and ring signal detector 3, which constitute a telephone circuit. 6), a teleting adapter system comprising a telephony circuit section 37 and a tone ringer 38.

Images