CN2696219Y

CN2696219Y - Network telephone terminal

Info

Publication number: CN2696219Y
Application number: CN 200420007094
Authority: CN
Inventors: 王磊
Original assignee: Lenovo Beijing Ltd
Current assignee: Lenovo Beijing Ltd
Priority date: 2004-03-22
Filing date: 2004-03-22
Publication date: 2005-04-27
Anticipated expiration: 2014-03-22

Abstract

The utility model provides a network telephone terminal which is connected with computers provided with audio cards, comprising an outer shell, a compression spring unit which is arranged inside the outer shell, a keyboard unit, a control unit and a receiver unit. Wherein, the compression spring unit is used for depressing the compression spring, ejecting and sending the signal to the control unit; the keyboard unit is to collect and pass the pressed key information and onto the control unit; the control unit is connected with the interface of the computer, passing the information received from the compression spring unit and the keyboard unit onto the network conversation software installed in the computer ; the network telephone terminal also comprises an acoustic frequency switch over unit, and a group of input terminals thereof is connected with the audio card of the computer while working ; two groups of output ends are respectively connected with the receiver unit and an external sound box and an external microphone ; an enabling terminal which is to control the communicating of the input terminal and the output terminal is connected with the control unit. The ringing unit is connected with the control unit, receiving the signal which is sent by the control unit to proceed to ringing. By making use of the network telephone terminal, internet telephones are dialed up as the same as do ordinary telephones.

Description

Network telephone terminal

Technical Field

The utility model belongs to the technical field of computer application and electron technique and specifically relates to a network telephone terminal.

Background

At present, the rapid development of the internet and the rapid popularization of computers make the dialing of internet phone through computers an application hot spot of multimedia on the internet. The network telephone is dialed by the computer, so that the low-cost voice communication is realized, and more users select the network telephone for communication. At present, a network telephone is dialed through a computer, except that network communication software is provided on the computer, a computer sound card is required to be connected with a sound box and a microphone, when a user uses the network telephone, the network communication software is required to be started, and then a called number is input through a keyboard of the computer or a mouse clicking the keyboard on an interface provided by the network communication software to carry out calling. It can be seen that the method for dialing network telephone by using computer is different from the ordinary telephone method, and the user needs to know certain computer knowledge to use the corresponding network communication software to dial, etc., which is not as convenient as the ordinary telephone. On the other hand, when the sound box and the microphone connected with the computer sound card are used as the voice playing device and the sound collecting device, the voice of the other party can be played through the sound box, and people nearby can hear the voice, so that the privacy of the user calling cannot be guaranteed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a network telephone terminal for can operate like using ordinary telephone when dialling the network telephone.

The utility model discloses a network telephone terminal for being connected with computer that has sound card, including the shell and the pressure spring unit, keyboard unit, the control unit and the earphone unit that are located the shell, wherein, the pressure spring unit is used for transmitting the signal that the pressure spring was pushed down, was bounced to the control unit; the keyboard unit comprises keys and is used for collecting information of the pressed keys and transmitting the information to the control unit; the control unit is connected with a computer interface and used for transmitting the received information of the pressure spring unit and the keyboard unit to network communication software on the computer; the receiver unit comprises a loudspeaker and a microphone, and the loudspeaker and the microphone are respectively connected with an audio output port and a microphone input port of the computer sound card in working states.

The network telephone terminal further comprises a ringing unit, wherein the ringing unit is connected with the control unit and used for receiving the signal of the control unit to carry out ringing.

The network telephone terminal further comprises an audio switching unit, wherein the audio switching unit comprises a group of input ends, a group of output ends and an enabling end for controlling the input ends and the output ends to be conducted; the system comprises an audio switching unit, a control unit and a computer sound card, wherein a group of input ends of the audio switching unit are connected with an audio output port and a microphone input port of the computer sound card in a working state, a group of output ends of the audio switching unit are connected with a loudspeaker and a microphone of a receiver unit, and an enabling end of the audio switching unit is connected with the control unit and used for receiving signals of the control unit to control the connection of the input end and the output end of the audio switching unit.

The audio switching unit further comprises a second group of output ends, and the audio switching unit controls the input ends of the audio switching unit to conduct switching on the two groups of output ends according to signals of the enabling ends of the audio switching unit. And the second group of output ends of the audio switching unit are connected with the external sound box and the external microphone.

Wherein, the audio frequency switching unit is a multi-channel electronic switch. The control unit is a single chip microcomputer or a microcontroller MCU. The computer interface is a standard serial interface, a USB interface or a PS/2 interface.

The shell comprises a microphone and a base which are connected through a flexible data line, and the earphone unit, the keyboard unit and the control unit are positioned in the microphone; the pressure spring unit is positioned in the base; the flexible data line comprises a lead wire for connecting the circuit in the microphone and the circuit in the base.

Wherein, the base is inside further to include an audio frequency switch unit, audio frequency switch unit has a set of input that links to each other with the audio output port and the microphone input port of computer sound card when operating condition, the first group output that links to each other with the speaker of earphone unit and microphone, be used for with external audio amplifier and external microphone link to each other the second group output and with the control unit link to each other and be used for switching the enable end of first group output and second group output.

Through using the network telephone terminal that links to each other with the computer dial the network telephone, because this network telephone terminal self contains earphone unit and keyboard unit similar with ordinary telephone to its outward appearance is the same with ordinary telephone, its application method is also the same with using ordinary telephone method, consequently can dial like using current phone, the conversation operation, compare with the network conversation software that the operation computer provided dials, it is more simple and direct convenient and humanized. Additionally, use telephone terminal carries out the network conversation, can automatic disconnection sound card with external audio amplifier be connected, with sound automatic switch to telephone terminal's earphone, consequently, can not heard the conversation content by others, protects user's conversation privacy.

Drawings

Fig. 1 is a schematic diagram of the telephone terminal of the present invention.

Fig. 2 is a schematic diagram of a pressure spring unit.

Fig. 3 is a schematic diagram of a ringing unit.

Fig. 4 is a schematic diagram of an earpiece unit.

Fig. 5 is a schematic diagram of an audio switching unit.

Fig. 6 is a schematic diagram of a keyboard unit.

Fig. 7 is a control unit schematic.

Fig. 8 is an external view of the telephone terminal of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and examples.

Fig. 1 is a schematic diagram of the network telephone terminal of the present invention. As shown in fig. 1, the network telephone terminal includes a pressure spring unit, a ringing unit, an earpiece unit, an audio switching unit, a keyboard unit, and a control unit. The pressure spring unit is used for detecting the lifting and pressing states of the pressure spring and transmitting corresponding signals to the control unit. The ringing unit is used for receiving the signal of the control unit to carry out ringing. The audio switching unit is used for receiving the signal of the control unit and controlling the connection and disconnection of the earphone unit and the corresponding port of the computer sound card. The keyboard unit is used for the user to carry out key input and transmitting key information to the control unit. The control unit controls the associated action of the units, is connected with the computer interface through the port of the control unit, exchanges information with the network communication software of the computer and realizes the dialing of the network telephone.

Fig. 2 to 7 are exploded views of the elements of the schematic diagram of the network telephone terminal, and the present invention will be described in detail with reference to fig. 2 to 7.

Fig. 2 is a schematic diagram of a pressure spring unit, which is a mature device. The pressure spring unit is positioned on a base of the telephone, when a telephone receiver is placed in the base, a pressure spring (HOOK) is pressed down, two ends of the HOOK are conducted, and the pressure spring unit transmits a high-level signal to an I/O port of the control unit through an output port of the pressure spring unit; when the telephone receiver is picked up, two ends of HOOK of the pressure spring unit are disconnected, and the pressure spring unit transmits a low level signal to an I/O port of the control unit.

Fig. 3 is a schematic diagram of a ringing unit, which is a mature device. As shown in the figure, the input port of the ringing unit is connected with the base of an internal triode 2N3904, when an input signal becomes high, the triode is conducted, the potential difference is generated at the two ends of a ringer (BUZZER), and a ringing sound is generated. The input port of the ringing unit is connected with the I/O interface of the control unit, receives the waveform signal sent by the control unit and controls the ringing device to send out ringing sound.

Fig. 4 and 5 are schematic diagrams of an earpiece unit and an audio switching unit, respectively. Wherein the earpiece unit comprises a speaker and a microphone as in the prior art. The audio switching unit comprises an enabling end, a group of input ends and two groups of same output ends, and the input ends are conducted with one group of output ends through enabling signals. The audio switching unit can be implemented by using a multi-channel electronic switch chip, for example, a 74HC4053 chip in this example, and its input terminal is connected to the audio output port and the MICROPHONE input port of the computer sound card, the first set of output terminals is connected to the SPEAKER (SPEAKER) and the MICROPHONE (MICROPHONE) provided in the handset, and the second set of output terminals can be used to connect the external SPEAKER and the external MICROPHONE, and its enable port is connected to the control unit I/O. When the enabling end receives effective signals from the control unit, the input end is conducted with the first group of output ports, namely, the loudspeaker and the microphone of the receiver are respectively conducted with the audio output port and the microphone input port of the computer sound card; when the enabling port receives signals ineffectively, the input end of the audio switching unit is conducted with the other group of output ports, namely the computer sound card is conducted with the external loudspeaker and the external microphone.

Fig. 6 is a schematic diagram of a keyboard unit, which is a mature device. In this embodiment, a 4 × 5 keyboard matrix is used, considering that no more than 20 telephone keys are used. The 9 ports forming the keyboard matrix are connected with 9I/O of the control unit, and the coordinates of keys pressed by a user are directly obtained by the control unit.

Fig. 7 is a control unit schematic. Through the connection relation, the control unit can collect the information of the pressure spring unit and the keyboard unit and can also transmit the control information to the audio switching unit and the ringing unit; the control unit is connected with the computer interface by using the I/O interface of the control unit at the same time, and exchanges information with the network communication software on the computer. The control unit can be realized by various single-chip microcomputers or Microcontrollers (MCU), and an AT89C2051 chip is adopted in the embodiment. As shown in fig. 7, the P3.0 and P3.1 ports of the AT89C2051 chip are connected to CLOCK and DATA ports of the computer interface, respectively, to implement communication with the host; the P3.2 port is connected with the output end of the pressure spring unit; the P1.5 port is connected with the input port of the ringing unit; the P1.7 port is connected with the enabling end of the audio switching unit; the ports P1.0-P1.4, P3.3-P3.5 and P3.7 form a 5 x 4 matrix which is connected with the keyboard unit and used for reading the coordinate information of the keys pressed by the user. In addition, XTAL1 and XTAL2 are crystal oscillator signal introducing ports of the AT89C2051 chip and are connected to a crystal oscillator to obtain an oscillation signal.

The computer interface can be a standard serial interface, a USB interface or a PS/2 interface. In the embodiment, a PS/2 interface is adopted, the PS/2 interface comprises a CLOCK port, a DATA port, a VDD port and a GND port, and the P3.0 port and the P3.1 port of an AT89C2051 chip are respectively connected with the CLOCK port and the DATA port of the PS/2 interface to realize the connection with a computer and the information interaction. In addition, the voltage leading-in terminal in each circuit diagram of fig. 2-7 can be connected with the VDD port of PS/2, and the ground terminal in fig. 2-7 can also be connected with the GND port of PS/2, and the corresponding voltage and ground are provided by the computer.

Wherein, fig. 8 is the appearance schematic diagram of the telephone terminal of the present invention, as shown in fig. 8, when the network telephone terminal is seen from the outside, the housing includes a microphone and a base, which are connected by a flexible data line, wherein the data line includes a plurality of wires inside, which are used as the connecting lines for the inner circuit of the microphone and the inner circuit of the base. The microphone comprises the receiver unit, the keyboard unit and the control unit; the base internally comprises the pressure spring unit and a connecting wire for connecting the control unit to a computer interface. In addition, the base further comprises an audio switching unit, wherein the audio switching unit is provided with a group of input ends connected with an audio output port and a microphone input port of the computer sound card in a working state, a first group of output ends connected with a loudspeaker and a microphone of the receiver unit, a second group of output ends connected with the external loudspeaker box and the external microphone, and an enabling end connected with the control unit and used for switching the first group of output ends and the second group of output ends. Of course, those skilled in the art can understand that the ringing unit, the audio switching unit, the keyboard unit and the control unit can be disposed inside the microphone or inside the base, and the circuit inside the microphone is connected to the circuit inside the base through the flexible data line. The audio switching unit is connected with the ports of the external loudspeaker and the external microphone and is arranged on the base; the interface of the audio switching unit, which needs to be connected with the computer sound card, is also arranged on the base, and the base is led out to connect with the computer sound card.

In addition, the network telephone terminal can also not comprise a ringing unit, and the network communication software simulates ringing tones and sounds through an external sound box connected with a sound card.

The network telephone terminal composed of fig. 2-7 will be described below, and the operation principle of the network telephone terminal will be described by taking the user to make and receive network telephone calls, respectively.

The network telephone terminal is used for dialing the network telephone and comprises the following steps:

the first step is as follows: a user takes the microphone from the base, the pressure spring of the pressure spring unit on the base bounces, and the pressure spring unit outputs low level to the control unit.

The second step is as follows: the control unit receives the low level transmitted by the pressure spring unit from the P3.2 port of the control unit, sends a corresponding signal from the P3.1 port, sends the signal to the computer through the PS/2 port of the computer, and the computer activates corresponding network communication software. Meanwhile, the control unit P1.7 port output signal enables the audio switching unit to conduct the audio output port and the microphone input port of the computer sound card with the loudspeaker and the microphone in the telephone receiver unit respectively.

The third step: then the user presses the called number and the talk key through the keyboard unit, the key coordinates are obtained by the control unit from the P1.0-P1.4, P3.3-P3.5 and P3.7 ports, and are converted into corresponding key codes to be output from the P3.1 port, and the corresponding key codes are transmitted to the computer through the PS/2 port.

The fourth step: the network communication software of the computer receives the key code information, respectively converts the key code information into corresponding numbers or preset instructions, and then initiates a call to the called user through the Internet.

After the communication with the other party is successfully established, the VOIP data packet transmitted from the internet is unpacked and restored into a sound file through network communication software, and then is transmitted to a loudspeaker built in a receiver unit through a sound card audio output port to be played; similarly, the voice of the user is transmitted to the microphone input port of the computer sound card for input through the built-in microphone of the receiver unit, and then is transmitted to the network in a packaging way through the network communication software and is sent to the opposite side.

When the call needs to be ended, a user puts down a receiver, a pressure spring of a pressure spring unit is pressed down, the pressure spring unit outputs high level to a control unit, the control unit outputs a corresponding signal through P3.1 and transmits the signal to a computer through a PS/2 port, and network call software receives the signal and then ends the call. Meanwhile, the control unit P1.7 port output signal enables the audio switching unit to be invalid, the audio output port and the microphone input port of the computer sound card are respectively disconnected with the telephone receiver unit, and the connection with the other group of ports of the audio switching unit is realized, wherein the group of ports can be externally connected with an external sound box and an external microphone.

When the user is called, the network telephone terminal is used for receiving the network telephone, and the method comprises the following steps:

the first step is as follows: the network communication software on the computer receives the call request, the network communication software sends the ringing request to the control unit through the PS/2 interface, the control unit receives the request command through the P3.1 port connected with the control unit, and sends a waveform signal to the ringing unit through the P1.5 port for ringing.

The second step is as follows: a user hears ringing, picks up the microphone, the pressure spring of the pressure spring unit bounces, and the pressure spring unit outputs low level to the control unit.

The third step: the control unit receives the low level transmitted by the pressure spring unit from the P3.2 port, sends a corresponding signal from the P3.1 port, sends the signal to the computer through the PS/2 port, and the network communication software stops sending the ringing request after receiving the signal. Meanwhile, the control unit P1.7 port output signal enables the audio switching unit to be effective, and an audio output port and a microphone input port of the computer sound card are respectively communicated with a loudspeaker and a microphone in the telephone receiver unit.

It can be seen, use network telephone terminal cooperation corresponding network conversation software when dialling the network telephone, the user can dial the call like using ordinary telephone, need not go to operation network conversation software to just break off the corresponding port of sound card and to the route of external audio amplifier when picking up the earphone, switched sound to telephone terminal's earphone on, ensured the privacy of user's conversation.

Claims

1. A network telephone terminal used for connecting with a computer with a sound card is characterized by comprising a shell, a pressure spring unit, a keyboard unit, a control unit and a receiver unit which are positioned in the shell, wherein,

the pressure spring unit is connected with the control unit;

the keyboard unit comprises keys and is connected with the control unit;

the control unit is connected with the computer interface;

the receiver unit comprises a loudspeaker and a microphone, and the loudspeaker and the microphone are respectively connected with an audio output port and a microphone input port of the computer sound card in working states.

2. The network telephone terminal of claim 1, further comprising a ringing unit, wherein,

the ringing unit is connected with the control unit.

3. The network telephone terminal of claim 1, further comprising an audio switching unit, said audio switching unit comprising a set of inputs, a set of outputs, and an enable terminal for controlling the conduction of said inputs and outputs; wherein,

and a group of input ends of the audio switching unit are connected with an audio output port and a microphone input port of the computer sound card, a group of output ends of the audio switching unit are connected with a loudspeaker and a microphone of the receiver unit, and an enabling end of the audio switching unit is connected with the control unit.

4. The network telephone terminal of claim 3, wherein the audio switching unit further comprises a second set of outputs.

5. The network telephone terminal according to claim 4, wherein the second set of output terminals of the audio switching unit is connected to an external speaker and an external microphone.

6. The network telephone terminal according to claim 3, wherein the audio switching unit is a multi-way electronic switch.

7. The network telephone terminal according to claim 1, wherein the control unit is a single chip microcomputer or a microcontroller MCU.

8. The network telephone terminal of claim 1, wherein the computer interface is a standard serial interface, a USB interface, or a PS/2 interface.

9. The network telephone terminal according to claim 1, wherein the housing comprises a microphone and a base which are connected by a flexible data cable, and the earphone unit, the keyboard unit and the control unit are positioned in the microphone; the pressure spring unit is positioned in the base; the flexible data line comprises a conducting wire for connecting the circuit in the microphone and the circuit in the base.

10. The network telephone terminal of claim 9, wherein the base further comprises an audio switching unit having a set of inputs connected to the audio output port and the microphone input port of the computer sound card, a first set of outputs connected to the speaker and the microphone of the earphone unit, a second set of outputs for connecting to the external speaker and the external microphone, and an enable terminal connected to the control unit for switching between the first set of outputs and the second set of outputs.