CN101159771A

CN101159771A - Network telephone set

Info

Publication number: CN101159771A
Application number: CNA2007101876770A
Authority: CN
Inventors: 张原天
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-21
Filing date: 2007-11-21
Publication date: 2008-04-09

Abstract

A network telephone comprises a housing and a power supply circuit, and also comprises a SDRAM memory for storing the working program of the network telephone and completing data write and read in combination with a CPU processor; a FLASH randow memory for storing the use generation parameter and information and completing data read and write in combination with a ADSPCPU processor; an audio linear coder/decoder for completing voice simulation and digital conversion; an Ethernet controller for achieving two-way transmission with the ADSPCPU processor, transmitting data with a network transformer, and achieving data exchange with an external interface; and the ADSPCPU processor for calling the digital signal in the SDRAM memory, processing the selected signal and transmitting the data. The network telephone can achieve point-to-point free conversation with any network telephone of the same type by connecting with the power supply and the internet, can online transfer call to all terminal users infinitely, and can be widely used in company or at home.

Description

Network telephone

Technical field

The present invention relates to a kind of network telephone that utilizes the internet resource to realize the technical scheme, particularly a kind of plug and play of telephone communication (communication).

Background technology

Development along with Internet technology, people can carry out exchange and conmmunication easily and efficiently by network, the transmission of early stage text can not have been satisfied the needs that people exchange fully, the generation of the networking telephone, and making to exchange on network by voice becomes possibility.Improvement along with present network technology and bandwidth, the communication effect of the networking telephone is near present pstn telephone, because the transmission of networking telephone voice can utilize the Internet to realize, and the networking telephone can freely realize point-to-point conversation, and therefore the networking telephone is used widely in a lot of places at present.

The existing networking telephone is to realize that by microcomputer voice are in transmission over networks, by being installed in the networking telephone client software on the microcomputer, utilize special-purpose USB network telephone or headset with voice transfer to microcomputer, compression and coding through client software, voice are packed, by voice being passed to voip server or gateway passes to partner again in the Internet, on the contrary the other side by same mode the other side's voice are passed and come, so just set up an Internet phone-calling process.Because this type of networking telephone is by microcomputer and Network Transmission voice, therefore require in the microsystem networking telephone client software to be housed in advance, and require system that the driver of network enabled telephone plant operate as normal is arranged, as the handle dialing of network telephone, ring etc., this just requires networking telephone program to be installed to program on the microcomputer by CD or other approach before the networking telephone uses for the first time.Because the existing networking telephone be unable to do without microcomputer, there is following problem in it, at first, the networking telephone has become many people indispensable communication tool in work and life, owing to be subjected to the restriction of network telephone software and service condition, when people leave own original work and living environment and come other local the time, networking telephone program can not be installed at will on other people microcomputer.Secondly, promptly enable to install networking telephone program,, therefore, all might allow other people find personal information at any time owing to use the networking telephone could set up conversation by the checking of account number and password.The 3rd, the historical record that generates in communication process can not be carried, and exists to use inconvenience and unsafe factor.

Summary of the invention

The technical problem to be solved in the present invention provides a kind of network telephone of plug and play, this network telephone energized and the Internet just can with the point-to-point no-charge call of any identical network telephone set, can online unlimited calling transfer to all terminal uses, removed the dependence of the networking telephone to microcomputer, do not need by operator's registration, install, dialog context can be stored and consult, not only convenient but also safety.

For solving the problems of the technologies described above, a kind of network telephone provided by the invention comprises the housing with panel and base, and its panel is provided with display screen, keyboard and microphone, and power circuit is characterized in that, also comprises

The SDRAM memory is used for storage networking phone works program, cooperates the read and write of finishing corresponding data with ADSP CPU processor,

The FLASH random asccess memory is used for storing all parameters and the information that use generates, and cooperates the read and write of finishing corresponding data with the ADSPCPU processor,

Audio linear coder is used to finish the analog-and digital-conversion of voice,

Ethernet controller is realized the bi-directional data transmission with ADSP CPU processor, carries out data passes with network transformer; Dock with external interface realization data,

ADSP CPU processor, be used for transferring the SDRAM memory data-signal, handle selected signal, data passes.

Described network telephone, it is characterized in that, at described audio linear coder built-in microphone place in circuit and earpiece audio output circuit, adopt the TLV320AIC23B encoder, its PIN3/4/5/6/7/8/21/23/24 finishes the transmission of data respectively with ADSP CPU processor related circuit, MIC signal process appearance value is the PIN2/3 "-" that the electric capacity of 1UF is input to operational amplifier LM324, "+" signal input part, circuit adopts 47K and 24K resistance to form the 1/2V+ biasing, and signal passed through the PIN19 and 20 of the capacitor of 10UF to TLV320AIC23B by PIN1 after computing was finished; Left and right sides audio frequency output is finished by the PIN12/13 of TLV320AIC23B, uses and the audio-frequency power amplifier LM4890 rate of doing work amplification of design to being mainly mobile phone through the capacitor of 0.1UF, and the audio-signal-driven loudspeaker of amplification are sounded.

Described network telephone is characterized in that, is 32M volatibility single data rate dynamic random access memory at described SDRAM memory, and bit wide is 32, and the clock cycle is 94MHz.

Described network telephone is characterized in that, is non-volatile NOR type in described FLASH random asccess memory, and bit wide is 32, and be 90 nanoseconds access cycle.

Described network telephone, it is characterized in that, insert the CPU processor at described ethernet controller with 16 bus modes, inserting the bus access cycle was 70 nanoseconds, its chip is KS8842, the external 25M crystal oscillator of its PIN65/66, PIN68 to 84,110 to 128 realize the bi-directional data transmission with ADSP CPU processor, and PIN45/45/48/49/52/53/55/56 and network transformer PPT-SO carry out data passes; The PIN9/11/14/16 of PPT-SO docks with external interface RJ-45-16 realization data.

Described network telephone is characterized in that, at described ADSP CPU processor, its chip is BF531, exterior I O power supply 3.3V, core logic power supply 1.2V, core frequency 375MHz, external bus frequency 94MHz, 16 total live widths.

Compared with prior art, because network telephone of the present invention has ADSP CPU processor, FLASH memory, SDRAM memory, the linear coding decoder of voice, ethernet controller, only need with this network telephone energized and the Internet just can with the point-to-point no-charge call of any identical network telephone set, can online unlimited calling transfer to all terminal uses, removed the dependence of network telephone to microcomputer, do not need by operator's registration, install, dialog context can be stored and consult, not only convenient but also safety.Really reach the plug and play effect.

Description of drawings

The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.

Fig. 1 is the structural representation calcspar of network telephone of the present invention;

Fig. 2 is a network telephone workflow schematic diagram of the present invention;

Fig. 3 is an electronic devices and components distribution schematic diagram on the network telephone mainboard of the present invention;

Fig. 4 is the circuit theory diagrams of network telephone CPU processor of the present invention;

Fig. 5 is network telephone SDRAM memory of the present invention and FLASH flash memory circuit schematic diagram;

Fig. 6 is the linear coding and decoding circuit theory diagrams of network telephone voice of the present invention;

Fig. 7 is network telephone ethernet controller circuit theory diagrams of the present invention;

Embodiment

As shown in figures 1 and 3, network telephone of the present invention comprises the housing with panel and base, its panel is provided with display screen, keyboard, mainly by CPU processor, SDRAM memory, FLASH flash memory, audio linear coder, ethernet controller, power supply and loud speaker and audio power amplifying circuit thereof, display screen, function key in the keyboard and numerical key are in order to realize dialling, answering the networking telephone.Display screen on the main frame partly mainly shows date and information such as message registration.

Microphone passes to audio linear coder to the sound that receives and compresses, and by the CPU processor voice packet of handling well is realized the workflow of conversing on the internet by ethernet controller again.In advance networking telephone working procedure is write the SDRAM memory, the CPU processor is called in main program and is called that network telephone work is required a related parameter from the SDRAM memory; Automatically access the network telephone working interface; Can normally use about after landing parameter information in input under the network telephone working interface; All parameters and the information that generate in the use all are recorded in the FLASH memory.

As shown in Figure 2, network telephone of the present invention by inserting the Internet, is realized the conversation of the networking telephone, can call out the same network telephone in the whole world by the mode of dialing.

As shown in Figure 4, the CPU processor circuit is the BF531 chip, and its periphery is the SDRAM of UNICOM memory, FLASH flash memory, audio linear coder, ethernet controller and display screen respectively.

As shown in Figure 5, network telephone memory circuit of the present invention, be used for storage networking phone main program and at calling record, message registration, the telephone directory of communication process, reply message, the color tinkling of pieces of jade.

As shown in Figure 6, network telephone audio coding decoding circuit of the present invention is used for compression and encrypted speech, convenient can the transmission on the internet, or the voice packet decoding of being responsible for the Internet is uploaded is reduced into voice.As shown in Figure 7, network telephone ethernet controller circuit of the present invention is used for the access way of the various the Internets of self adaptation, has to have simplified the Internet and insert the complexity of configuration and the penetrability of network, to reach the function of plug and play.With being responsible for the good voice packet of compression is passed to addressing function on the Internet.

Electronic devices and components parametric description of the present invention:

Adopt adsp531, extend out 2Mbyte FLASH, 16Mbyte SDRAM constitutes the core minimum system, and that the design of audio-frequency unit is adopted is an ADC DAC chip TLVAIC23B who meets the AC97 standard, and what network interface partly adopted is the 100M/10M Ethernet.

Comprise following hardware capability module:

Processor (ADSP BF531)

Power supply and filter capacitor (LM2575)

Clock and reset (74HC04)

Memory (S29AL016D, HY57V561620F)

Audio frequency (AIC23B)

Network (KS8842-16)

Keyboard and display interface

Other external tappings

The processor part:

Exterior I O power supply 3.3V, core logic power supply 1.2V, core frequency 375MHz, external bus frequency 94MHz, 16 total live widths.

Power supply and decoupling part:

Power supply all adopts asynchronous built-in metal-oxide-semiconductor Switching Power Supply mode.The decoupling capacitance array adopts 0.01uF and 0.1uF to arrange mutually, is divided into 1.2V part and 3.3V part.

The clock and the part that resets:

The 27MHz crystal that the processor clock from processor is external.The clock of network interface and audio frequency is from external separately crystal.Reset and adopt the logic modified model Schmidt interface logic level of reduced form.

Memory portion:

Adopt 2M byte non-volatile NOR type FLASH random asccess memory and 32M volatibility single data rate dynamic random access memory (SDRAM) bit wide to be 32.FLASH access cycle was 90 nanoseconds.The SDRAM clock cycle is 94MHz, and CAS latency is 3, constant 1 burst length.

Audio-frequency unit:

Device inserts processor by the I2S master mode, is linear audio encoding and decoding device, built-in microphone place in circuit, earpiece audio output circuit.Hand-free function is provided separately by external amplifier.

Network portion:

16 bus modes insert processor, provide 10M/100M self adaptation Ethernet access capability and two oral sexes to change planes.Insert 70 nanoseconds of bus access cycle.

Keyboard and display part:

The LCD escope inserts processor IO in the IO mode, array of display size 128 * 64dots, and keyboard is handled button by monolithic processor and is inserted processor via serial ports again.

Other external tappings:

The JTAG debug port

The LED light function declaration

Power LED; It is bright to power up the normal startup in back, and the expression power supply is normal.

Keep LED: during powered-on mode, light the expression hold mode.

Keyboard operation:

Enter menu:

During holding state, press Menu key, enter main menu, after entering, will occur " machine master, message registration, answering strategy, calling transfer, automatic-answering back device, status report, fast decoding, group's gateway table, paid service, network settings, version information and option such as restarting.Menu item with first as the current set of menu item.

The choice menus item: turn in the use, downturning key moves to choose in menu at the corresponding levels and selects.

Enter next stage: when having subordinate's menu, press the OK acknowledgement key, enter the next stage menu.

Editor and affirmation: when selected menu item does not have subordinate's menu, enter editing mode by the OK key; After using numeric keypad to carry out the parameter input, press the OK key and confirm input.

Deletion: under editing mode, ESC Escape is removed the input content.

Return the higher level: use ESC Escape to withdraw from Previous Menu.

Do not preserve and withdraw from: make an amendment by the ESC Escape cancellation.

Preserve: press the OK key and confirm that the parameter value of revising restarts preservation.Make an amendment by the ESC Escape cancellation.

In sum, because network telephone disclosed in this invention, in use, network telephone moves networking telephone program and all the required parameters of networking telephone work in the memory module automatically, reads from the memory module of self, the Internet inserts simple, the record that is produced in the communication process can access equally whenever and wherever possible, therefore has plug and play, and simple, convenient to use, as to be convenient for people to the work of flowing characteristics are installed.Network telephone of the present invention in addition, except being used for Internet phone-calling, can also be as a HUB, microcomputer can realize sharing online by the netting twine interface of network telephone, also the data storage such as file that need in the work can be used as USB flash disk in the memory module of product of the present invention.Thereby can further satisfy the needs of people's work and life.

Claims

1. a network telephone comprises the housing with panel and base, and its panel is provided with display screen, keyboard and microphone, and power circuit is characterized in that, also comprises

2. network telephone according to claim 1, it is characterized in that, at described audio linear coder built-in microphone place in circuit and earpiece audio output circuit, adopt the TLV320AIC23B encoder, its PIN3/4/5/6/7/8/21/23/24 finishes the transmission of data respectively with ADSP CPU processor related circuit, MIC signal process appearance value is the PIN2/3 "-" that the electric capacity of 1UF is input to operational amplifier LM324, "+" signal input part, circuit adopts 47K and 24K resistance to form the 1/2V+ biasing, and signal passed through the PIN19 and 20 of the capacitor of 10UF to TLV320AIC23B by PIN1 after computing was finished; Left and right sides audio frequency output is finished by the PIN12/13 of TLV320AIC23B, uses and the audio-frequency power amplifier LM4890 rate of doing work amplification of design to being mainly mobile phone through the capacitor of 0.1UF, and the audio-signal-driven loudspeaker of amplification are sounded.

3. network telephone according to claim 1 is characterized in that, is 32M volatibility single data rate dynamic random access memory at described SDRAM memory, and bit wide is 32, and the clock cycle is 94MHz.

4. network telephone according to claim 1 is characterized in that, is non-volatile NOR type in described FLASH random asccess memory, and bit wide is 32, and be 90 nanoseconds access cycle.

5. network telephone according to claim 1, it is characterized in that, insert the CPU processor at described ethernet controller with 16 bus modes, inserting the bus access cycle was 70 nanoseconds, its chip is KS8842, the external 25M crystal oscillator of its PIN65/66, PIN68 to 84,110 to 128 realize the bi-directional data transmission with ADSP CPU processor, and PIN45/45/48/49/52/53/55/56 and network transformer PPT-SO carry out data passes; The PIN9/11/14/16 of PPT-SO docks with external interface RJ-45-16 realization data.

6. network telephone according to claim 1 is characterized in that, at described ADSP CPU processor, its chip is BF531, exterior I O power supply 3.3V, core logic power supply 1.2V, core frequency 375MHz, external bus frequency 94MHz, 16 total live widths.