AU684442B1 - Portable data terminal equipment with telecommunication function and information processing system using the same - Google Patents

Description

I

P/00/011 Regulation 3.2

AUSTRALIA

Patents Act 1990

ORIGINAL

COMPLETE SPECIFICATION STANDARD PATENT 0o 000e** Invention Title: PORTABLE DATA TERMINAL EQUIPMENT WITH TELECOMMUNICATION FUNCTION AND INFORMATION PROCESSING SYSTEM USING THE SAME **0*t The following statement is a full description of this invention, including the best method of performing it known to us: GH REF: P11602-DN:TJS:RK

IMEM

1A PORTABLE DATA TERMINAL EQUIPMENT WITH TELECOMMUNICATION FUNCTION AND INFORMATION PROCESSING SYSTEM USING THE SAME BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable data terminal equipment with telecommunication function and information processing systems using such data terminal equipments.

2. Description of the Prior Art With an advancement in the miniaturization of data terminal equipment and mobile telephone, some sorts of portable data terminal equipments with telecommunication function have been proposed which comprises a wireless telephone portion and a dat., terminal portion, enabling not only voice communication but also data communication with a remote station. However such data terminal equipments are not provided with any auxiliary storage for the purpose of miniaturization. This makes it troublesome to load the equipment with an application program and let the 20 program run on the equipment, resulting in narrow application of such data terminal equipment.

SUMMARY OF THE INVENTION It is preferably an advantage of the invention to provide an improved portable data terminal equipment with telecommunication function which permits various application programs to be executed.

_L It is preferably a further advantage of the invention to provide some embodiments of information processing systems using the improved portable data terminal equipments.

The present invention provides a portable data terminal equipment comprising a wireless telephone portion and a data terminal portion; the wireless telephone portion having a voice/data switch circuit for selectively connecting two common terminals connected with voice signal input and output nodes of the portion to one of two terminal pairs (one terminal'pair is connected with a microphone and a speaker); and the data terminal portion being provided with a communication interface having a parallel port and at least one serial port, a circuit for providing one of the at least one serial port with an 15 interface to and from the other terminal pair, a memory card interface (IF) for providing the paralll port with an interface 59*S to a memory card such as a ROM (read only memory) card for storing an application program and RAM (random access memory) "for storing data.

The data terminal portion may further comprise an optical communication port according to the IrDA (Infrared Data Association found in 1993) standard.

The portable data terminal equipment (DTE) permits user to place a call in any of three communication modes. A call placed in a PHS (personal handyphone system) mode or public line mode 3 is routed via a PHS base station servicing the location of the calling DTE. IN a private line mode, the call is connected to a private PHS base station provided for DTEs constituting a network or to a called DTE in the network via the base station.

And in a transceiver mode, the call is connected directly to a called DTE.

Some exemplary information processing systems using DTEs according to the present invention will be described, BRIEF DESCRIPTION OF THE DRAWING 10 Further objects and advantages of the present invention will be apparent from the following description of the preferred embodiments of the invention as illustrated in the accompanying fe**: drawings. In the drawing, FIG. 1A is a perspective illustration of an illustrative embodiment of a portable data terminal equipment with telecommunication function according to the principles of the invention; FIG. 1B is a side view, viewed from the direction of an arrow AB shown in FIG. 1A, of the embodiment of FIG. 1A: FIG. 2 is a block diagram showing an arrangement of the illustrative embodiment of FIG. 1: FIG. 3 is a diagram showing exemplary memory maps of the EEPROMs 33 and 45 of FIG. 2; FIG. 4 is a diagram showing an arrangement of a first information processing system using DTEs according to the I 1_1 I principles of the present invention: FIG. 5 is a flow chart of an exemplary call origination routine; FIG. 6 is a diagram showing an arrangement of a second information processing system using DTEs according to the principles of the present invention; FIG. 7 is a diagram showing procedures executed by the elements 1, 601, and 603 of the system and a data flow among the elements; and 10 FIG. 8 is a diagram showing procedures executed by a host computer 801 of a dealer and a DTE 1 of a prospect and a data flow between the host computer 801 and the DTE 1.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG, 1A shows an exterior view of an illustrative embodiment S 15 of a portable data terminal equipment with telecommunication function or a DTE according to the principles of the invention.

FIG. 1B is a side view, viewed from the direction of an arrow AB shown in FIG. 1A, of the embodiment of FIG. IA. In FIG. 1, the DTE 1 comprises a main body 2, an LCD (liquid crystal display) panel 36, an antenna 5 connected with a wireless telephone portion, a microphone 6 and a loudspeaker 7 for the wireless telephone portion, key switches 34 operated by the user, a memory card olot 53 into which a memory card 10 is inserted, and an IrDA optical communication port 59.

II r- FIG. 2 shows, in a block diagram form, an arrangement of the DTE of FIG. 1. In FIG. 2, the DTE generally comprises a wireless telephone portion 20 and a data terminal portion 30 which shares the same controller The wireless telephone portion 20, which works as a conventional PHS telephone set, comprises the antenna 5; an RF (radio frequency) stage comprising a transmitter, a receiver an antenna duplexer operated by a transmission/reception control signal from the controller 40; a modulator demodulator 23; a channel codec 25; an A/D D/A converter 27; a voice/data switch 49 for selectively connecting two common terminals 49CT and 49CR connected with voice signal input and output nodes of the 2 wireless telephone portion (that is, the A/D converter input and S* the D/A converter output of 27) to one of two terminal pairs 15 49VT, 49VR) and (49DT, 49DR); a microphone (MIKE) 6 connected to a transmission side of one terminal pair or terminal 49VT; a loud speaker 7 connected to a reception side of the one terminal pair or terminal 49VR; a ringer for alerting the user when a call addressed to the DTE is received; and the controller (detailed later). The voice/data switch 49 is controlled by a voice/data switching control signal from the controller 40, The controller 40 further controls the modulator 23, the channel codec 25 and the A/D D/A converter 27.

The controller 40, which controls both operation of the wireless telephone portion and the data terminal portion, comprises a CPU (central processing unit) 41; a clock circuit 43; an EEPROM (electrically erasable and programmable read only memory) 45 for storing a system program for the whole system, a chinese character dictionary and at least one application program executed under the system program, the EEPROM preferably comprising a flash EEPROM: a RAM (random access memory) 47 for storing data, the RAM preferably comprising static RAM in this embodiment; and an I/O (input and output) interface 48 for providing the CPU 41 with I/O interface, As a controller for the wireless telephone portion 20, the CPU 41 monitors the decoder of the channel codec 25 at a certain time interval to see if a call addressed to the DTE is received, and, if so, outputs a ringing signal to the ringer 29 via the 1/O interface 48. Also, the CPU 41 controls the voice/data switch 49 Sby outputting the voice/data switching control signal via the 15 I/O interface 48 such that the common terminals 49CT and 49CR are connected with a pair of voice terminal 49VT and 49 VR, respectively, in case of a voice communication and with a pair of data terminals 49DT and 49DR, respectively, in case of a data communication.

20 In addition to the controller 40, the data terminal portion comprises a sub-controller 31 for supporting the operation of the CPU 41; a key switches 34 through which the user can input various instructions and data; a monochrome semi-transparent LCD panel 36 with a back light function for displaying the state of operation: and an LCD drivor 37 including a VRAM (video RAM) As is well known in the art, the sub-controller 31 comprises 7 a not-shown CPU within the sub-controller 31, a ROM 33 for storing a program executed by the not shown CPU and data necessary for voice and data communications, a RAM (not shown) and an I/O interface (not shown). The ROM 33 is preferably an EEPROM so that the program stored in the EEPROM 33 can be altered easily if necessary. The sub-controller 31 performs various control operations such as a LCD 36 display of a telephone icon indicative of the state of the wireless telephone portion, a calendar and clock operation, input operation through key switches 34, and a back light control, etc. The key switches 34 are preferably self-illuminated. With the above described elements 31, 33 through 37 and 40, the data terminal portion can operate as a conventional DTE as is well known in the art.

*sea The data terminal portion 30 further comprises a 15 communication controller 51 connected with data and address

B

buses of the CPU 41 and having a parallel port and two serial ports; a memory card interface (IF) 53 connected with the e* parallel port for permitting a data transfer between the CPU 41 data bus 42 and the mrmory card 10 inserted into the memory card 20 IF 53; a data converter 55, having a digital terminal thereof connected with one of the two serial ports of the communication controller 51 and having analog input and output terminals thereof connected with a data output (or reception) terminal 49DR of the voice/data swi tch 49 and a data input (or transmission) terminal 49DT, respectively, for enabling data to be transferred between the CPU 41 data bus 42 and another 8 telephone terminal either directly or via a nearest PHS base station; and a optical communication port 59, of the IrDA (Infrared Data Association) standard, or RS-232C serial interface connected with the other one of the two serial ports for enabling a data transfer between the CPU 41 data bus 42 and other system. The data converter 55 comprises a modem 56 and a analog IF 55 and effectuates a conversion from the digital signal on line 54 to an analog signal of an audible frequency on line 55T in case of data transmission and a conversion from an 10 analog signal of an audible frequency on line 55R to a digital 0 0 signal on line 54 in case of data reception.

It should be noted that the program memory 45 for the CPU 41 comprises an EEPROM iso as to enable the user to load the EEPROM ^45 with a desired app ication program stored in a memory card 15 through the memory card IF 53.

FIG. 3 shows exemplary memory maps of the EEPROMs 33 and of FIG. 2 and the relation among programs stored in the EEPROMs 33 and 45. As shown in FIG. 3, the EEPROM 33 stores a program 330 for the sub-controller 31 and data 331 necessary for voice and data communications, The program 330 at least comprises a command interpreter 33 for identifying the instruction given by the user and for transferring the instruction to the CPU 41 if the instruction is to be executed by the CPU 41. The EEPROM stores a system program 451, at least one application program 452, a chinese character dictionary 453 as described above. The system program 451 comprises data transfer utilities 454, an application executive routine 455 which have been loaded from a memory card 10, etc. The data transfer utilities 454 at least comprises: "READ MEMORY CARD TO FILE" 461 for reading data from the memory card 10 into a file "FILE" in the EEPROM "WRITE FILE TO MEMORY CARD" 462 for writing data of a file "FILE" in the EEPROM 45 to the memory card "SEND FILE VIA PHS" 463 for sending data of a file "FILE" through an established PHS transmission path to a *a*o 10 destination telephone terminal (not shown), "RECEIVE DATA FROM PHS INTO FILE" 464 for receiving and storing the data incoming from a PHS channel into a file

"FILE";

a.

$oe e Go "SEND FILE VIA IrDA PORT" 465 for send data of a file 15 "FILE" via the IrDA port 59 (or the RS-232C serial port), etc, Referring to FIGs, 2 and 3, operation of some of the above mentioned utilities will be described in the following, If, for example, the data incoming through the wireless telephone portion 20 is to be stored in the RAM 47 in a file name "FILE", the utility "RECEIVE DATA FROM PHS INTO FILE" 464 is invoked. Then, under the control of the utility 464, the CPU 41 sets a baud rate associated with the utility 464 to the communication controller 51, and thereafter receives the data from the data converter 55 through the controller 51 whiling storing the received data in the RAM 47 as a file "FILE." In this case, the Incoming data of an audible frequency is converted into a binary data by the data converter If the data of a file 'FILE" stored in the RAM 47 is to be sent to other telephone terminal (not shown) connected to a host 5 computer (not shown) via a PHS base station, the utility "SEND FILE VIA PHS" 463 is invoked. The CPU 41 sends to the communication controller 51 an instruction and data associated with the utility. In response to this, the communication controller 51 activates the data converter 55 and sets a baud 10 rate to the converter 55. Thereafter, the CPU 41 reads data by the bus width from "FILE" stored in the RAM 47 while sending the read data through the communication controller 51 to the data converter 55, The data converter 55 converts the received data into an audible frequency signal, which is passed to the A/D 15 converter portion of the A/D D/A converter 27 via the of* voice/data switch 49.

If an application program stored in a memory card 10 is to be stored or loaded in the EEPROM 45 as a file "FILE", then the utility "READ MEMORY CARD TO FILE" 461 is invoked. Then the CPU 41 sends to the communication controller 51 an instruction and data associated with the utility 461. In response to this, the communication controller 51 activates the memory card IF 53 and sets predetermined data to the memory card 53. Th reafter, the CPU 41 receives data from the memory card IF 53 via the communication controller 51 while storing the received data in the EEPROM 45 as the file "FILE". Thus, the application program 11 in the memory card 10 is easily loaded in the EEPROM 45. If the capacity of the EEPROM 45 is sufficiently large as compared with the loaded program, a plurality of programs may be loaded, We discuss how the loaded program is executed in the following. The user inputs an execution instructior identifying a desired program ID if there are stored in a plurality of application programs in the EEPROM 45. However, the user may omit the program ID if the EEPROM 45 stores only one application program. If the command interpreter 333 identifies the S 10 execution instruction, the Interpreter 333 sends a code indicative of the instruction to the CPU 41. In response to the reception of the code, the CFU 41 enters the above mentioned application executive routine 455, Under the contrnl of the routine 455, the CPU 41 does a predetermined pre-procssing and 15 then enters the specified one of the application programs stored in the EEPROM 45 or the application program solely stored in the EEPROM 45, In this way, the any of the application programs stored in the EEPROM 45 can be easily executed.

Information Processing System I FIG. 4 is a diagram showing an arrangement of a first information processing system using DTEs according to the present invention, where the small circles indicates mobil stations or inventive DTEs 1. In FIG. 4, the first information processing system comprises a PHS private base station (PBS) 401 provided near the center of a certain area such as a building, 12 the premise of a hospital, etc. a plurality of inventive DTEs 1 carried by the attendants working in the area, e. g. the doctors and nursbs in the hospital, a host computer 403, and an inventive DTE la (provided with an RS-232C serial port instead of an IrDA optical communication port) which connects the host computer 4,3 with the PBS 401 by means of radio by communicating data with the host computer 403 through the RS-232C port and communicating data with the PBS 401 through the PHS channel.

S. *e This information processing system enables each of the DTEs .OSe 10 1 and the PBS 401 to not only communicate with each other but also transmit and receive data to and from the host computer S 403.

In this information processing system, a call between two of S' the DTEs 1 is established in any of three origination modes or 15 communication modes---a public line mode, a private line mode and a transceiver mode. A call placed in the public line mode is routed via a PHS base station 410 servicing the location of the *to calling DTE 1 (An example of this mode is shown as a call between DTEs lb in FIG. A call placed in the private line mode is routed via the private base station (PBS) 401 (An example of this mode is shown as a call between DTEs Ic). And a call placed in a transceiver mode is connected directly to a called DTE 1 (An example of this mode is shown as a call between DTEs id). Each user may select one of the three modes in originating a call. In this case, the call is routed according to the selected communication mode. Alternatively, the user may simply dial a destination telephone number without specifying any communication mode in originating a call. In this case, the call is routed in the private line mode or the transceiver mode if the originating DTE 1 is within the service area 4 (shown in a broken line in FIG. 4) of the private base station 401, and routed in the public line mode if the originating DTE 1 is out of the service area 4.

In operation, if the command interpreter 333 in the EEPROM 33 interprets a series of data input by the user as a call 10 origination instruction, then the interpreter 333 informs the CPU 41 of the fact, a destination address and a specified communication mode if any. Thereafter, the CPU 41 executes a call origination routine as described below, o.* SFIG. 5 is a flowv chart of an exemplary call origination 15 routine, In FIG. 5, the CPU 41 makes a test to see if the communication mode is specified in step 501, If so, the CPU 41 makes another test to see if the transceiver mode is specified in step 502. If so, the CPU 41 call the des nation DTE in step 503 to see if there is any response from the DTE in step 504. If so, the CPU 41 executes ordinary process according to the response, that is, any of busy tones, simple ring back tones and an appearance in step 510. Otherwise, the CPU 41 sends the call to the PBS 401 in step 506 and proceeds to the above described step 510.

If the test result is NO in decision step 502, then the CPU 41 examines 'he communication mode in step 505 to see if the mode is private mode. If so, the CPU 41 proceeds to step 506 and sends the call to the PB'i 401, and otherwise sends the call to a PHS base station 410 servicing the calling DTE 1 in step 507.

If the test result is NO in decision step 501, the CPU 41 makes another test in step 508 to see if the calling DTE 1 is within the service area of the PBS 401. The CPU 41 proceeds to the above mentioned step 503 if so, and otherwise proceeds to step 509 and sends the call to a base station 410 servicing the calling DTE 1. After any one of the steps 506, 507 and 509, the 10 CPU 41 proceeds to step 510, and executes ordinary process according to the response from the base stations as described *"too above, Information Processing System II 99 FIG. 6 is a diagram showing an arrangement of a second 15 information processing system using DTEs according to the present invention, where BS 603 indicates a base station mounted on a vending machine, and each of the small circle indicates an inventive DTE 1 mounted on a vending machine. In FIG. 6, the second information processing system comprises a host computer 601 which is provided in a business office maintaining a lot of vending machines grouped into a plurality of groups 610, 620 and 630 and which is connected to the public telecommunication network 602; PHS base stations 603 each of which is iounted on a vending machine located at a substantially central position in a vending machine group 610, 620 or 630 and connected to the public telecommunication network 602, and a plurality of inventive DTEs each mounted on a vending machine which is not provided with a base station 603. It is noted that the DTEs communicates with respective vending machine via RS-232C serial interfaces.

In the above constitution, the host computer 601 gathers data from each of the vending machines via the inventive DTEs 1 as described in the following. The host computer 601 sends a request for sales data to each of the base stations 603 via the public line 602 at a certain time interval. In response to this request, each of the BS 603 sends a request for sales data to 'a each of the DTEs 1 in a vender machine group to which the BS 603 a belongs by means of a PHS channel. Each of the DTEs in the system collects sales data from the vending machine on which the DTE is a. mounted (own vending machine), calculates the total of sales by :a 15 own vending machine by means of the information processing function of the DTE 1, makes a check to see if there is any trouble with the own vending machine, and returns the results of these processing to the base station 603. Each base station 603 sends the received results to the host computer 601 via the public line 602. The business office analyzes the received results, and supplements commodities to each vending machine and keeps each machine in good condition.

Information Processing System III A third information processing system comprises a host computer of a dealer connected to the public telec-mmunication network and an inventive DTE of a prospect. FIG. 8 is a diagram showing procedures executed by the host computer 801 of the dealer and the DTE 1 of the prospect and a data flow between the host computer 801 and the DTE 1.

The prospect requests the dealer for information on the commodities and services the dealer can provide in step 810. The host computer 801 sends catalog data or service menu data to the prospect's DTE 1 in step 820, Then, the prospect examines the received data and inputs data necessary for ordering a desired o° article or service in step 830. Completing the input, the 10 prospect sends the input data to give the dealer an order.

Though the modulator demodulator 23, the channel codec 8 the CPU 41, the clock circuit 43, and the I/O are described as discrete elements in the illustrative embodiment, all or part cf these elements may be realized as a single ship integrated 19 circuit Similarly, each of the communication controller 00.0 51 and the sub-controller 33 may be realized as an IC.

Many widely different embodiments of the present invention 8888 may be constructed without departing from the spirit and scope of the present invention. It should be understood that the present invention is not limited to the specific embodiments described in the specification, except as defined in the appended claims.

Claims (13)

1. A portable data terminal equipment, with wireless telephone function, which permits a load and an execution of an application program, the portable data terminal equipment comprising: a wireless telephone portion; and a data terminal portion, wherein said wireless telephone portion and said data terminal S portion shares a controller having data and address buses; and said wireless telephone portion has a voice/data switch operative under the control of said controller for selectively connecting two common terminals connected with voice signal 000.0 input and output nodes of the portion to one of a data terminal pair and a voice terminal pair with which a microphone and a 15 speaker are connected, wherein said data terminal portion 64#0 comprises: a communication interface connected with said data and address buses and having a parallel port and at least one serial port; means for providing one of the at least one serial port with an interface to and from said data terminal pair of said voice/data switch; a memory card interface (IF) for providing said parallel port with an interface to a memory card, and wherein said controller comprises: EEPROM for storing programs under which said controller operates; means for loading a program stored in said memory card set in said memory card IF into said EEPROM; and means for executing said program loaded in said EEPROM.

2. A portable data terminal equipment as defined in claim 1, wherein said data terminal portion further comprises an optical communication port of IrDA standard. S.

3. A portable data terminal equipment as defined in claim 2, wherein said controller further comprises: a random access memory (RAM) for temporarily storing data: means for transmitting data in a file ilOl i ed by an instruction via said optical communication port; and means for receiving incident optical data via said optical communication port and storing said received data in said RAM as 15 a file specified by an instruction.

4. A portable data terminal equipment as defined in claim 1, wherein said controller further comprises: means responsive to a determination that the equipment is in a service area of a private PHS base station privately provided for connecting an originating call to said private PHS base station.

A portable data teminal equipment as defined in claim 4, 19 wherein said controller further comprises: means responsive to a determination that the equipment is not in a service area of any private PHS base station but in a service area of any (public) PHS base station for connecting said originating call to said PHS base station.

6. An information processing system for permitting each of the persons active in a predetermined area not only to re communicate with each other and a headquarter but also to send and receive data to and from a host computer provided in the 10 area, the system comprising: Sa PHS private base station (PBS) provided in said headquarter; a portable data terminal equipments (DTEs) carried by each of said person; 15 said host computer 4.03; and a DTE provided with an RS-232C serial port which connects said host computer with said PBS by means of radio by communicating data with said host computer through said RS-232C port and communicating data with said PBS through the wireless telephone function of said DTE, wherein each of said DTEs comprises: a wireless telephone portion; and a data terminal portion, wherein said wireless telephone portion and said data terminal portion shares a controller having data and address buses; and said wireless telephone portion has rt voice/data switch operative under the control of said controller for selectively connecting two common terminals connected with voice signal input and output nodes of the portion to one of a data terminal pair and a voice terminal pair with which a microphone and a speaker are connected, wherein said data terminal portion comprises: a communication interface connected with said data and address buses ai, hSaving j. parallel port and at least one serial *few S 10 port; means for providing one of the at least one serial por with *o an interface to and from said data terminal pair of said vice/data switch; *4 9 a memory card interface (IF) for providing said parallel 15 port with an interface to a memory card, and wherein said o controller comprises: EEPROM for storing programs under which said controller operates; means for loading a program stored in said memory card set in said memory card IF into said EEPROM; and means for executing said program loaded in said EEPROM.

7. An information processing system sa defined in claim 6, wherein said controller further comprises: means responsive to a determination that a call originating instruction is accompanied by a transceiver mode indication for making an attempt to directly call a destination DTE; means, responsive to a determination that said call originating instruction is accompanied by a private mode indication or a determination that no response was obtained from said attempt, for sending a originating call to said private base station (PBS); and means responsive to a determination that said call originating instruction is accompanied by a public mode indication for sending said originating call to a PHS base S 10 station by which the DTE originating said originating call is to be serviced.

8, An information processing system sa defined in claim 7, wherein said controller further comprises default originating means responsive to a determination that said call originating o**l 15 instruction is not accompanied by any mode indication, and said default originating means comprises: means responsive to a determination that said DTE is in a service area of said private base station for connecting said originating call to said private base station.

9. An information processing system sa defined in claim 8, wherein said default originating means further comprises: means responsive to a determination that said DTE is not in said service area of said private base station but in a service area of said PHS base station for connecting said originating call to said PHS base station.

An information processing Tystem, comprising a host computer connected to the public telecommunication network; PHS base stations each of which is mounted on a vending machine located at a substantially central position in a vending machine group and connected to said public telecommunication network, and WU a plurality of portable data terminal equipments (DTEs) Ooo 10 each mounted on a vending machine which is not provided with a S base station, said DTEs communicating with respective vending machine via RS-232C serial interfaces, wherein: said host computer sends a first data request to each of said PHS base stations at a certain time interval and receives S S data sent from each of said PHS base stations; each of said PHS base station sends a second data request to each of said DTEs in response to said first data request and forwards data sent from each of said DTEs to said host computer; and in response to said second data request, said DTEs collect data concerning respective vending machines and return the collected data to said PHS base station.

11. An information processing system as defined in claim wherein each of said DTEs comprises: a wireless telephone portion: and a data terminal portion, wherein said wireless telephone portion and said data terminal portion shares a controller having data and address buses; and said witeless telephone portion has a voice/data switch operative under the control of said controller for selectively connecting two common terminals connected with voice signal input and output nodes of the portion to one of a data terminal pair and a voice terminal pair with which a microphone and a speaker are connected, wherein said data terminal portion ee comprises: a communication interface connected with said data and address buses and having a parallel port and at least one serial port; 15 means for providing one of the at least one serial port with an interface to and from said data terminal pair of said voice/data switch; g 6000 a memory card interface (IF) for providing said parallel port with an interface to a memory card, and wherein said controller comprises: EEPROM for storing programs under which said controller operates; means for loading a program stored in said memory card set in said memory card IF into said EEPROM: and means for executing said vrogram loaded in said EEPROM. S *5 S 4 5

12. A portable d a ta termiia, equipment, substantially as herein described with reference to the accompanying drawings.

13. An information processing system, substantially as h-erein described with reference to the accompanying drawings. Dated this 27th day of March J9017 AL'14LP .JSHITA -,I 4 E('.TR q INDUSRPL CO LTD. 1-3v the~ir R*;tent Attorn~ey :RklV'VITIT HACK ft S II 56 S *5*q~ S 'S ABSTRACT OF~ THE DISCLOSURE A portable data termginal equipment (DTE) with wireless telephone function Is provided with a memory card interface and uses EEPROM as a program memory, This permits a load and an execution of an opplication program. The DTE further comprises an optical communication port of the IrDA standard or an RS-232C par. for a higher Interfacing capability. The DTE provides three call origination mode (transceiver, private and public modes), Three Inform~ation Processing systems are disc.losed as S 10 application examples,