CN2459825Y

CN2459825Y - Electronic telephone set with earphone

Info

Publication number: CN2459825Y
Application number: CN 00247889
Authority: CN
Inventors: 陈国潘; 程雄峰
Original assignee: XIAMEN XIAXIN ELECTRONIC CO Ltd
Current assignee: Xiaxin Electronic Co., Ltd.
Priority date: 2000-08-29
Filing date: 2000-08-29
Publication date: 2001-11-14
Anticipated expiration: 2010-08-29

Abstract

The utility model discloses an electronic telephone with an earphone, which comprises a power supply circuit, a polarity protection circuit, a dialing control circuit, a transmitting and receiving circuit, a keyboard control circuit, a speakerphone circuit, a DC bias circuit, and a head circuit. The head circuit is connected in parallel with the speakerphone circuit, the input end of which is connected with the DC bias circuit and the output end of the transmitting and receiving circuit. When the calls come in, the function of the earphone is performed by pressing the hand-free key firstly, and then inserting the earphone. Users can answer the telephone as long as wearing the earphone without facing the telephone when the users operate computers. The utility model has the advantages of convenience of typing and surfing the internet, good privacy. The utility model is convenient for the daily life and study of users.

Description

A kind of electronic telephone that has earphone

The utility model relates to a kind of electronic telephone earphone, relates in particular to a kind of electronic telephone that has earphone.

Present electronic telephone mainly is made up of power circuit, polar protective circuit, a number control circuit, talking and receiving circuit, keyboard control circuit etc.Most of electronic telephones all have hand-free function, can realize with IC, or directly realize with discrete component.The telephone set hand-free function has made things convenient for user's daily life.But simultaneously hand-free call gives great volume, and easily influences other people normal activity, also is unfavorable for protecting individual privacy, and during hand-free call, owner must limit user's freedom of movement in the face of the telephone set answer.

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of easy to use, has privacy, and the user need be in the face of the novel phone of telephone set when conversing.

The purpose of this utility model is achieved in that the band hand-free function telephone set based on prior art, increases by a head circuit, selects circuit by switch, and head circuit is in parallel with handfree circuit.

Owing to take said structure, the user need receive calls when operating computer, need not face telephone set, as long as be with earphone to answer, do not stop over typewriting, online, and has good privacy.Use the telephone set of band earphone can allow the user converse with friend on one side,, can better make things convenient for user's daily life and study Yi Bian see the TV programme of oneself liking.

Reaching embodiment in conjunction with the accompanying drawings is further described the utility model:

Accompanying drawing 1, the utility model functional-block diagram;

Accompanying drawing 2, the utility model embodiment 1 head circuit figure;

Accompanying drawing 3, the utility model embodiment 2 head circuit figure;

As shown in Figure 1, the utility model is based on prior art band hand-free function telephone set, increases by a head circuit, and head circuit is in parallel with handfree circuit, the output that it is imported termination dc bias circuit and send, is subjected to circuit.When incoming call, press Hands-free key earlier, plug in the earphone again, just can use ear-phone function.When making a phone call, using method is identical.

Embodiment 1, and as shown in Figure 2, head circuit is made up of toggle switch SW2 and earphone socket JF3.Earphone socket JF3 and toggle switch SW2 are in parallel.3 pin of half switch SW 2A of toggle switch SW2 connect dc bias circuit, 2 pin lug machine transplanting of rice seat JF3, and 1 pin meets hands-free microphone JF1; 4 pin of second half switch SW 2B meet hands-free loudspeaker JF2,5 pin lug machine transplanting of rice seat JF3, the 6 pin sound receiving circuit of answering.When toggle switch SW2 pushed 1,4 pin, this moment, the microphone JF1 and the loudspeaker JF2 of handfree circuit worked; When toggle switch SW2 pushed 2,5 pin, the microphone JF1 of handfree circuit and loudspeaker JF2 disconnected and are in closed condition, have inserted the microphone and the receiver of earphone, make earphone be in the talking state with the other side.During operation, press Hands-free key earlier, push aside and close SW2 to 2,5 pin, plugging in the earphone from socket JF3 gets final product.

Embodiment 2, and another kind of implementation method directly replaces switch and socket among the embodiment 1 (Fig. 2) with earphone socket JF4 as shown in Figure 3.2 pin of earphone socket JF4,5 pin connect two outputs of handfree circuit respectively, and the other end is connected to spring leaf (6); 3 pin, the one termination loudspeaker JF2 of earphone socket JF4, an end and 2 pin contacts join; 4 pin, the one termination microphone JF1 of earphone socket JF4, an end and 5 jiaos, pin contact join.When earphone socket JF4 did not insert earphone, 2 pin linked to each other the microphone of handfree circuit and loudspeaker work with 3 pin, 4 pin with 5 pin; After inserting earphone, the reed of 2,3 pin outwards flicks, and the microphone of handfree circuit and loudspeaker are disconnected, and earphone and handfree circuit are connected, and the words of sending, be subjected to of handfree circuit are worked by earphone.This method realizes easy, simple to operate, only needs to increase the cost of a socket.

Claims

1, a kind of electronic telephone that has earphone; comprise power circuit, polar protective circuit, send out number control circuit, talking and receiving circuit, keyboard control circuit, handfree circuit, dc bias circuit; it is characterized in that: also have a head circuit; head circuit is in parallel with handfree circuit, the output that it is imported termination dc bias circuit and send, is subjected to circuit.

2, a kind of electronic telephone that has earphone according to claim 1, it is characterized in that: described head circuit is made up of toggle switch SW2 and earphone socket JF3, earphone socket JF3 and toggle switch SW2 are in parallel, 3 pin of half switch SW 2A of toggle switch SW2 connect dc bias circuit, 2 pin lug machine transplanting of rice seat JF3,1 pin meets hands-free microphone JF1; 4 pin of second half switch SW 2B meet hands-free loudspeaker JF2,5 pin lug machine transplanting of rice seat JF3, the 6 pin sound receiving circuit of answering.

3, a kind of electronic telephone that has earphone according to claim 1, it is characterized in that: described head circuit is earphone socket JF4, and 2 pin of earphone socket JF4,5 pin connect two outputs of handfree circuit respectively, and the other end is connected to spring leaf (6); 3 pin, the one termination loudspeaker JF2 of earphone socket JF4, an end and 2 pin contacts join; 4 pin, the one termination microphone JF1 of earphone socket JF4, an end and 5 jiaos, pin contact join; When earphone socket JF4 did not insert earphone, 2 pin linked to each other the microphone of handfree circuit and loudspeaker work with 3 pin, 4 pin with 5 pin; After inserting earphone, the reed of 2,3 pin outwards flicks, and the microphone of handfree circuit and loudspeaker are disconnected, and earphone and handfree circuit are connected, and the words of sending, be subjected to of handfree circuit are worked by earphone.