CN2338796Y - Shared key-board for micro-computer main control modular and telephone set - Google Patents

Abstract

The utility model relates to a computer input keyboard, which comprises a keyboard control circuit and keyboard keys, wherein, the keyboard control circuit is mutually connected with a main control modular circuit of a micro computer; the keyboard keys comprise numerical keys, telephone function keys and terminal function keys. The numerical keys and the telephone function keys are mutually connected with the input end of a dial control chip in a telephone modular circuit; the terminal function keys are mutually connected with the keyboard control circuit. The output end of the dial control chip is mutually connected with the main control modular circuit of the micro computer, and is supplied with power by the main control modular circuit of the micro computer and the telephone modular circuit. The utility model can satisfy the operating requirements of telephone and computer terminals and make key positions least.

Description

The shared keyboard of micro computer main control module and telephone set

The utility model relates to a kind of computer input keyboard.

Continuous development along with information industry and computer networking technology, the application of computerized information terminal more and more widely, people wish can both obtain the information that needs at any time in various occasions, and terminal commonly used now all is as a kind of office equipment, can only use in the specific occasion, need link the development of incompatibility informationized society by special line and main frame.At present taken the lead in adopting phone to carry out public information service as industries such as post and telecommunications, finance, for example phone information inquiry, phone are entrusted stock exchange and quotations on the stock market inquiry etc., but telephone set itself can only be with voice transfer information and no datat processing capacity.However, because network is popularized and is formed in the application of phone very much, make and to utilize telephonic communication technology, computing machine communication and the information processing technology to design a kind of current collection phone and the terminal function becomes possibility in the information terminal of one, and this terminal will require the shared keyboard of a telephone set and terminal.Because the micro computer main control module that the core of terminal is made up of cpu control circuit, system storage and the peripheral interface circuit of realizing central authorities' control is so this shared keyboard is the shared keyboard of micro computer main control module and telephone set.The shared button of micro computer main control module and telephone set mainly is a numerical key, telephone set and micro computer main control module all need numerical key to carry out the numeral input, because the keyboard of telephone set is the scan mode of simulating signal, and the keyboard of micro computer is the scan mode of digital signal, and therefore different scan modes makes micro computer and telephone set be difficult to shared keyboard.Then the key position is too many if use two cover keyboards, causes maloperation easily, and cost is also higher.

The purpose of the utility model is to provide the structure of the shared keyboard of a kind of micro computer main control module and telephone set, so that the button of keyboard is the least possible, and can satisfy the action need of telephone set and terminal.

The technical solution of the utility model is: it comprises keyboard control circuit and keyboard, keyboard control circuit and the cpu control circuit of controlling by realization central authorities, system storage, the micro computer main control module circuit that power circuit and peripheral interface circuit are formed links, wherein keyboard comprises numerical key, telephony feature key and terminal function key, numerical key wherein and telephony feature key and one realize telephony feature and link with telephone set modular circuit that micro computer main control module circuit links, each numerical key and telephony feature key link to each other with dialing control chip input end in the telephone set modular circuit, and terminal function key links to each other with keyboard control circuit.

In the design proposal of the present utility model, be separately with the terminal function key in the keyboard, by the interface of keyboard control circuit conduct with the micro computer main control module, shared numerical key and part telephony feature key (as " #, * " etc.) be the dialing control chip by linking with micro computer main control module circuit then, by this dialing control chip shared keyboard signal input signal is transferred to the micro computer modular circuit and discerns and read sign indicating number.Micro computer main control module circuit is the core control circuit of a standard, can constitute terminal by the equipment expansion, can connect display by cpu control circuit, also can expand various external units such as serial communication interface, printout mouth, QWERTY keyboard, IC-card interface by peripheral interface circuit.Micro computer main control module circuit is extendible to be all kinds of computer control and data processing equipment.

The output terminal of dialing control chip links by code translator and micro computer main control module circuit in the telephone set modular circuit, so that micro computer main control module circuit can be read the signal of shared numerical key and telephony feature key; The power supply supply pin of dialing control chip links to each other with the power circuit output end of micro computer main control module circuit again, this chip not only can be powered by the telephone set modular circuit, also can work incessantly to ensure this chip by micro computer main control module circuit supply.Because the telephone set modular circuit is ability powered operation when the phone off-hook only, and micro computer main control module circuit all needs to use keyboard when phone on-hook or off-hook.

The utility model has been realized the keyboard sharing of telephone set and terminal, one cover comprises that the 10 numeric keys of " 0～9 " both can be used for the phone number dial of telephone set, can be used for the numeral input of terminal again, make the key position of whole keyboard reach minimum, and can satisfy the action need of telephone set and terminal.

Embodiment below in conjunction with accompanying drawing further specifies the utility model.

Fig. 1 be structure of the present utility model and with the block diagram that connects of micro computer main control module, telephone set module;

Fig. 2 is a kind of embodiment of the layout of keyboard of the present utility model;

Fig. 3 is keyboard control circuit figure of the present utility model;

Fig. 4 is the telephone set module circuit diagram;

Fig. 5 is the partial circuit figure of micro computer main control module circuit.

Fig. 1 to Fig. 3 has reflected structure of the present utility model, and dotted line among Fig. 1 below is keyboard control circuit of the present utility model and keyboard, and the connecting of reflection and micro computer main control module and telephone set module; The keyboard layout figure of Fig. 2 is a kind of embodiment, top delegation is 5 self-defined terminal function key F1, F2, F3, F4, the F5 that keeps for the user, and terminal function key all is the functions that defined each key by the system controlling software of system storage internal memory in the micro computer main control module and user application software; The figure left side is distributed with numerical key " 0～9 " and telephony feature key " *, #, R, close sound, redial, hands-free " totally 16 keys, the figure right side is provided with 4 cursor keies, the figure lower right is provided with " cancellation, modification, affirmation " three terminal function keies, and figure the right is provided with " power supply, communication, phone, warning " 4 status indicator lamps.D13 among Fig. 3 is the keyboard scan control chip, D9 is a latch, Q7 by the D9 chip is connected three status indicator lamps respectively with the Q8 pin, comprise communication pilot lamp (light emitting diode V4), phone pilot lamp (light emitting diode V5) and power light (light emitting diode V1), each pilot lamp can be arranged on the keyboard, and wherein power light power circuit output end Vcc direct and micro computer main control module circuit links.The syndeton of terminal function key and keyboard control circuit is identical with QWERTY keyboard.

The telephone set modular circuit of Fig. 4 comprises the various piece that telephone set has, and wherein D1 is the phone ringing chip, and the ringdown of being gone up input by telephone wire PHONE1 and PHONE2 carries out control and treatment through D1, produces audio signal driving ringer B1 and sends the tinkle of bells; D2 is the dialing control chip among the figure, and the dialing signal of being pressed by numerical key converts audio frequency or pulse signal to and sends to telephone wire after handling through D2, the dialing of control telephone set; D3 among the figure is the conversation control chip, and the carrier wave sound signal on the telephone wire is handled by this chip and amplified, and sends on the telephone wire after voice signal process D3 amplification after the conversion and the modulation treatment, realizes call function; B2 is for being talked about loudspeaker, and M1 is for sending words Mai Kefeng.Fig. 5 is the cpu control circuit figure in the micro computer main control module circuit, and the D34 among the figure is for realizing the central processor CPU chip of master control function, and D25 is a decoder chip, and D30 and D31 are bus driver, and D22, D32 and D39 are latch.

The pin R1 of D2 in the numerical key of the keyboard of the utility model and the telephony feature key difference connection layout 4, R2, R3, R4, C1, C2, C3, C4, after the input of keyboard signal, after handling, D2 exports corresponding DTMFOUT signal from its output terminal DTMFOUT, this DTMFOUT signal pins is from the interface PORT1 in Fig. 4 upper left corner, through the BD[0..7 in the code translator connection layout 5] pin, thereby make the DTMFOUT signal after decoding converts 4 binary codes to, deliver to micro computer main control module circuit, read the key of keyboard after by cpu chip D34 the DTMFOUT signal being deciphered; When pressing numerical key, key is deciphered according to the state of telephone set by micro computer main control module circuit, when telephone set was off-hook, key was a telephone number; When telephone set was on-hook, key was the digital input code under the terminal state.Therefore the application of the utility model two aspects all can be satisfied.

Because the telephone set modular circuit only just provides power supply to the D2 among Fig. 4 when off-hook, and micro computer main control module circuit all may need the keyboard input at any time, therefore will keep power supply supply to D2 so that it is in running order always, micro computer main control module circuit and telephone set modular circuit are all powered to D2 as can be seen from Figure 4.The pin 14 of D2 is power pins V among the figure _DDDuring the telephone set off-hook, polar protective circuit of being made up of through diode V1, V2, V3, V4 telephone wire PHONE1, PHONE2 and triode V18 and diode V11 provide power supply for the control chip D2 that dials; When the telephone set on-hook, provide power supply through diode V5 to D2 by the power supply VCC of micro computer main control module circuit.The work enable signal of D2 is provided by triode V8, the control of its base stage level is controlled jointly by switch hook and cpu chip, the HKSCTL signal of the V8 base stage in the cpu control circuit control chart 4 of Fig. 5, the HKSCTL pin is from the BD[0..15 of interface PORT2 connection layout 5] pin; Cpu chip and telephone set module are controlled the work of D2 jointly; During the telephone set on-hook, cpu control circuit can make D2 remain on duty by the HKSCTL signal, can keep micro computer main control module circuit can both use keyboard like this when the needs keyboard is imported.

Draw pin BD[0..15 respectively by D9 and D13 among Fig. 3] and BD[0..7], again respectively with Fig. 5 in corresponding pin BD[0..15] link to each other, other has a plurality of pins such as PPCSO, RESET to link to each other with corresponding pin among Fig. 5.

Claims (2)

1, a kind of terminal keyboard, comprise keyboard control circuit and keyboard, keyboard control circuit and the cpu control circuit of controlling by realization central authorities, system storage, the micro computer main control module circuit that power circuit and peripheral interface circuit are formed links, it is characterized in that keyboard comprises numerical key, telephony feature key and terminal function key, numerical key wherein and telephony feature key and one realize telephony feature and link with telephone set modular circuit that micro computer main control module circuit links, each numerical key and telephony feature key link to each other with dialing control chip input end in the telephone set modular circuit, and terminal function key links to each other with keyboard control circuit.

2, keyboard according to claim 1, the output terminal that it is characterized in that dialing control chip in the telephone set modular circuit links by code translator and micro computer main control module circuit, and the power supply supply pin of dialing control chip links to each other with the power circuit output end of micro computer main control module circuit again.

Images