CN203896411U - Mobile phone business card exchange system - Google Patents

Abstract

The utility model discloses a mobile phone business card exchange system, comprising a transmitting end and a receiving end. The transmitting end comprises a digital coding module, au audio coding module, and a loudspeaker. The receiving end comprises an audio reversed coding module, a digital reversed coding module, and a microphone. On the transmitting end, business card character information is encoded by audio frequency in specific frequency, and the audio frequency is played by the loudspeaker. The receiving end receives the audio frequency with the characteristics through the microphone, and then the character information is decoded, and the business card is restored and stored in local. The loudspeaker and the microphone which are necessary in each mobile phone are used as information exchange hardware, additional cost is not added completely, and the system is convenient to use and is suitable to be used in elder mobile phones and children mobile phones.

Description

Cell-phone visiting card switching system

Technical field

The utility model relates to cell-phone visiting card switching technology, particularly a kind of cell-phone visiting card switching system.

Background technology

Cell-phone visiting card switching technology application scenario is a lot, and the main technology such as bluetooth, NFC that adopt exchange at present.These technology all need to rely on certain hardware and realize, and can increase the cost of mobile phone, are not suitable for undoubtedly children's older mobile phone of ultralow valency.And, as Bluetooth technology, relating to the processes such as search, coupling, password authentification, its complicated operation, is not suitable for the elderly and children completely and uses.

Utility model content

For the problems referred to above, applicant through Improvement, proposes a kind of cell-phone visiting card switching system, used each mobile phone all indispensable loud speaker and microphone as the hardware of information exchange, do not increase fringe cost completely, and easy to use.

The technical solution of the utility model is as follows:

Cell-phone visiting card switching system, comprises transmitting terminal and receiving terminal, and described transmitting terminal comprises digital coding module, audio coding module and loud speaker, and described receiving terminal comprises audio frequency Gray code module, digital Gray code module and microphone;

Described digital coding module, for the business card that needs are sent, be word for word converted to the digital coding that is combined into line display with ' 0 ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ', ' 6 ', ' 7 ', ' 8 ', ' 9 ' these 10 symbols, and add respectively ' * ' and ' # ' as boundary symbol at the digitally coded head and the tail of business card;

Described audio coding module module, for being converted to tonic train by the digital coding after conversion; Each numerical chracter consists of low frequency group fb and high frequency group fa two class frequency signals; The coding and decoding definition of numeral represents with following formula: f (t)=A_{a}sin (2f_{a}t)+A_{b}sin (2f_{b}t); In formula, two represent respectively value low, high audio, and Ab and Aa represent that respectively the sample value of low tone cluster and high tone cluster quantizes baseline, and both amplitudes are than being K=Ab/Aa (0.7<K<0.9); Time slot between each numerical chracter is 150 milliseconds;

Described loud speaker, for playing this tonic train;

Described microphone, for receiving this tonic train;

Described audio frequency Gray code module, for this tonic train is transformed into frequency domain by mathematic(al) manipulation from time domain, restores corresponding numerical chracter; When receiving terminal, receive and a pair ofly ' when * # ' and ' #* ' symbol, represent to receive a complete business card;

Described audio frequency Gray code module, for extracting the word of the name field of business card digital coding and number field by digitally coded decompiling.

Useful technique effect of the present utility model is:

The utility model is encoded business card Word message at transmitting terminal with the audio frequency of characteristic frequency, by loud speaker, play out, and receiving terminal decodes Word message after receiving this feature audio frequency by microphone, stores business card reduction into this locality.The utility model used each mobile phone all indispensable loud speaker and microphone as the hardware of information exchange, do not increase fringe cost completely, and easy to use, be applicable to older mobile phone and child mobile phone and use.

Advantage of the present utility model will provide in embodiment description partly below, and part will become obviously from the following description, or recognize by practice of the present utility model.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described further.

As shown in Figure 1, the utility model comprises transmitting terminal and receiving terminal, and described transmitting terminal comprises digital coding module, audio coding module and loud speaker, and described receiving terminal comprises audio frequency Gray code module, digital Gray code module and microphone.

Digital coding module, is applicable to the card information exchange of literal code, and literal code can be selected GBK, any coding such as UNICODE.According to these encoding schemes, any one word can be encoded into the numeral of one or several byte, can being combined into line display and (also can using 16 scale codings in addition with ' 0 ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ', ' 6 ', ' 7 ', ' 8 ', ' 9 ' these 10 symbols, the present embodiment be take 10 scale codings and is described as example, and both can of equal valuely exchange).In order to carry out the boundary of business card, the utility model has added ' * ' and ' # ' as boundary symbol.The business card of the transmission of needs is carried out to digital coding, and for example certain contents of visiting cards is: the little #13800001111#* of * # king, is word for word converted to UNICODE coding by it.

Audio coding module, by following audio coding table, is converted to tonic train by the UNICODE coding after conversion.Wherein each numerical chracter consists of low frequency group (fb) and high frequency group (fa) two class frequency signals, and each digital signal is formed by stacking by low frequency group and high frequency group any one.The coding and decoding definition of numerical chracter can be represented by the formula: f (t)=A_{a}sin (2f_{a}t)+A_{b}sin (2f_{b}t).Two in formula represent respectively value low, high audio, and Ab and Aa represent that respectively the sample value of low tone cluster and high tone cluster quantizes baseline, and both amplitudes are than being K=Ab/Aa (0.7<K<0.9).Time slot between each numerical character is 150 milliseconds.

Audio coding table

Loud speaker, plays this tonic train by the loud speaker of transmitting terminal mobile phone.

Microphone, the microphone of receiving terminal mobile phone receives this tonic train.

Audio frequency Gray code module, is transformed into frequently field by mathematic(al) manipulation from time domain audio frequency, and the audio coding table by below, restores corresponding numerical chracter.When receiving terminal mobile phone, receive and a pair ofly ' when * # ' and ' #* ', represent to receive a complete business card.

Numeral Gray code module, the decompiling of encoding by UNICODE, extracts name field wherein and number field, sets up a business card record, stores this locality into.

It is use value that the utility model has fine on older mobile phone, general cell phone for old people, less expensive, enforcement of the present utility model does not need to increase extra cost completely, and the elderly is generally more difficult aspect word input, the utility model does not need manual input completely, only need to select a certain business card record, select to send the audio signal after the transmission coding that mobile phone continues to circulate, receiving terminal start-up routine, just can receive this record, then preserve, operation is very easy, and the one-to-many being applicable among a small circle sends.

Above-described is only preferred implementation of the present utility model, and the utility model is not limited to above embodiment.Be appreciated that the oher improvements and changes that those skilled in the art directly derive or associate under the prerequisite that does not depart from spirit of the present utility model and design, within all should thinking and being included in protection range of the present utility model.

Claims (1)

1. a cell-phone visiting card switching system, is characterized in that: comprise transmitting terminal and receiving terminal, described transmitting terminal comprises digital coding module, audio coding module and loud speaker, and described receiving terminal comprises audio frequency Gray code module, digital Gray code module and microphone;

Described digital coding module, for the business card that needs are sent, be word for word converted to the digital coding that is combined into line display with ' 0 ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ', ' 6 ', ' 7 ', ' 8 ', ' 9 ' these 10 symbols, and add respectively ' * ' and ' # ' as boundary symbol at the digitally coded head and the tail of business card;

Described audio coding module module, for being converted to tonic train by the digital coding after conversion; Each numerical chracter consists of low frequency group fb and high frequency group fa two class frequency signals; The coding and decoding definition of numeral represents with following formula: f (t)=A_{a}sin (2f_{a}t)+A_{b}sin (2f_{b}t); In formula, two represent respectively value low, high audio, and Ab and Aa represent that respectively the sample value of low tone cluster and high tone cluster quantizes baseline, and both amplitudes are than being K=Ab/Aa (0.7<K<0.9); Time slot between each numerical chracter is 150 milliseconds;

Described loud speaker, for playing this tonic train;

Described microphone, for receiving this tonic train;

Described audio frequency Gray code module, for this tonic train is transformed into frequency domain by mathematic(al) manipulation from time domain, restores corresponding numerical chracter; When receiving terminal, receive and a pair ofly ' when * # ' and ' #* ' symbol, represent to receive a complete business card;

Described audio frequency Gray code module, for extracting the word of the name field of business card digital coding and number field by digitally coded decompiling.