CN1055814C

CN1055814C - Telephone dialing delay device

Info

Publication number: CN1055814C
Application number: CN94104066A
Authority: CN
Inventors: 吴瑞光; 陈茂松; 吴孟仓
Original assignee: Winbond Electronics Corp
Current assignee: Winbond Electronics Corp
Priority date: 1994-04-08
Filing date: 1994-04-08
Publication date: 2000-08-23
Anticipated expiration: 2014-04-08
Also published as: CN1110447A

Abstract

The present invention relates to a telephone dialing delay device. The telephone comprises a keyboard for users to input numbers and signs, a switch hook and a switch hook detection line. The present invention comprises a control circuit and a counter, wherein the control circuit is electrically connected the switch hook detection line and is used for detecting the state of ON/OFF of the switch hook, and the counter is electrically connected the control circuit and counts delay time according to the state of ON/OFF of the switch hook. Numbers or signs dialed by users can be ensured to be received by an exchanger, and the present invention has the efficiency that telephone long distance lock controlling system can be prevented from being decoded.

Description

Telephone dialing delay device

The present invention relates to a kind of deferred mount, refer to a kind of telephone dialing delay device especially.

The phone user can find when using phone, and (about 300ms～500ms) just can hear the sound (Dial Tone) that can dial behind the tube (OFFHOOK) that picks up the telephone, often will to wait the preceding paragraph reaction time.In reaction time, all do not accepted a blind spot of telephone set and inter-exchange so this section reaction time can say so by switch by the signal that telephone set is sent at this section.

Under above-mentioned situation, if user needless to say dialing tone produces, just switch is not in and waits for and just to begin the words that dial under the receiving state signal condition, then do not accepted, so there is the situation that to put through phone or receive wrong number to produce by switch because of the number of being transferred in the time at this blind spot.Telephone set system is in the past planted situation here for anti-, and has the circuit of detecting dialing tone to produce, and so the line construction of this kind detecting dialing tone is very complicated, and cost is also higher.

Secondly, in the lock control system of phone, telephone set often detects the use that whether should lock this telephone set with first output code; For example, is in the system of lock control sign indicating number at one with " 0 ", if the number that the user dials is (02) 1231231, then telephone set one first digit that detects this number is " 0 ", telephone set pins at once, then thereafter (2) 1231231 promptly can not be sent telephone set, and reached the function of lock control.Yet, if there is the user during blind spot, to dial any non-lock control sign indicating number earlier, again dial normal telephone number thereafter, for example: 6 (02) 1231231, then because first digit " 6 " is not the lock control sign indicating number, so telephone set can send 6 (02) 1231231, lie in the signal of being transferred to during the blind spot because of " 6 " again, do not received by switch, the old friend changes planes and in fact receives only " (02) 1231231 " this correct telephone number, and then the function of phone lock control is promptly cracked.

Main purpose of the present invention is to provide a telephone dialing delay device, and the number that the user is dialled in the reaction time in switch also can be received by switch.

Another object of the present invention is to provide a telephone dialing delay device, can prevent that other people from utilizing reaction time between switch and telephone set to crack the function of toll telephone lock control system.

The present invention is a kind of telephone dialing delay device, this phone is connected to a switch, it comprises a keyboard, for user's input digit, symbol, a hook switch (HOOK) and a hook switch detection line, and should exchange one period reaction time of facility, in this section in the reaction time this switch can't receive numeral, the symbol of user input; It comprises: a control circuit is electrically connected on this hook switch detection line, in order to the extension that detects this hook switch/pluck (ON/OFF); One counter is electrically connected on this control circuit, counts one period time of delay according to the ON/OFF state of this hook switch; The numerical chracter that the user is imported in the reaction time in this section also can be received by this switch.

When on-hook become off-hook begin counting in this hook switch this time of delay.

This control circuit also is connected in this input unit, and this counter is behind this hook switch OFF, and this control circuit is when receiving the first digit symbol, begins to count this section time of delay, and should time of delay greater than reaction time of this switch.

The present invention comprises that also a pulse/multiple output circuit frequently is electrically connected on this control circuit, after time of delay, changes into electric signal output with this numerical chracter that this control circuit received in intact this section of this rolling counters forward.

This electric signal belongs to pulse mode (PULSE MODE) or multiple pattern (TONEMODE) frequently.

The present invention gets following diagram of mat and detailed description, is understood in depth.

Fig. 1: be circuit block diagram of the present invention.

Fig. 2: for using this device first embodiment waveform schematic diagram of each related signal of telephone set afterwards.

Fig. 3: for using this device second embodiment waveform schematic diagram of each related signal of telephone set afterwards.

Fig. 4: for using this device the 3rd embodiment waveform schematic diagram of each related signal of telephone set afterwards.

Fig. 5: for using this device the 4th embodiment waveform schematic diagram of each related signal of telephone set afterwards.

See also Fig. 1, it is a preferred embodiment circuit block diagram of the present invention, it comprises: a control circuit 11, this control circuit 11 is connected in circuit keyboard 14 and hook switch detection line 13, one counter 12, and a pulse/multiple output circuit 15 frequently, two outputs, 151, the 152 exportable pulse modes (PULSEMODE) of this pulse/multiple output circuit 15 frequently and multiple pattern two kinds of signals such as (TONE MODE) frequently.

KHS among Fig. 2,3,4,5 is picked up (OFF HOOK) for " Low " (low) expression telephone microphone, " High ' (height) expression puts down microphone (ON HOOK); and " KI " be that " Low " expression keyboard is depressed; DP be the telephone number signal with PULSE MODE (pulse mode) output, and DTMF be the telephone number signal of exporting with frequency pattern again.

See also Fig. 1,2,3, it is picked up (OFF HOOK) for microphone and presses simultaneous situation with keyboard, when control circuit 11 is detected microphone and is become off-hook by on-hook by HKS13, promptly send an activation signal CON and give counter 12, counter 12 is promptly counted one period time of delay (it is greater than the reaction time of switch), after treating to count up to time of delay, counter 12 sends signal CO notice control circuit 11, pulse/multiple output circuit 15 frequently delivered to the number of being dialled again by control circuit 11, transfer this number to electric signal outputs such as pulse mode or multiple pattern frequently, Fig. 2 by 151 or 152, Tod in 3 " be this section time of delay.

Pick up and dial when not taking place simultaneously when microphone, the present invention can have two kinds of delayed modes; First kind of mode be as shown in Figure 4: activation counter 12 when control circuit 11 detects microphone and picked up, counter is promptly counted one period time of delay, treats mistake time of delay one, number is exported by DP151 again.Because have only about 300ms～500ms approximately during the general blind spot, so (OFF HOOK) counts one period time of delay immediately when microphone one is picked up, be enough to keep away the reaction time of this section blind spot, more can not found existing of this section time of delay with this kind delayed mode user.The second way is as shown in Figure 5: when control circuit 11 detects OFF HOOK, wouldn't activation counter 12, treat that the user presses number thereafter after, control circuit 11 is activation counter 12 again, make it count one period time of delay, again number is exported from DP151 thereafter.With this kind delayed mode, the user may find this section existence of time of delay, but because of this section period very little, so the unlikely puzzlement that causes the user, and this kind mode can guarantee more that each number of being dialled all can be received by switch.

So, deferred mount provided by the invention, not only can prevent to cause some numbers not received by switch because of the user dials during blind spot, the shortcoming obstructed or the wrong number that causes dialling also can be omitted the cost that unnecessary circuit spent that detects dialing tone on the applications circuit; Simultaneously aspect long-distance lock control, because each sign indicating number that the user dialled all can be received by switch, user who desires to crack this lock control system for example, if it is dialing " 6 " (02) 1231231, then switch is received as 6 (02) 123123 wrong number, has prevented the risk that lock control system is cracked.

In sum, the invention provides correctness and convenience that the telephone set dialing is used, reduce the cost of manufacture of telephone set and telephone set is made and oversimplify, increased the competitiveness of telephone set system widely.

The present invention must appoint the personage Ren Shi craftsman who is familiar with this skill to think and be to modify right neither taking off as Protector that attached claim is desired as all.

Claims

1. telephone dialing delay device, this phone is connected to a switch, it comprises a keyboard, for user's input digit, symbol, a hook switch and a hook switch detection line, and should exchange one period reaction time of facility, in this section in the reaction time this switch can't receive numeral, the symbol of user input; It is characterized in that described telephone dialing delay device comprises:

One control circuit is electrically connected on this hook switch detection line, in order to the extension that detects this hook switch/pluck; And

One counter is electrically connected on this control circuit, counts one period time of delay according to the on/off of this hook switch; Numeral, symbol that the user is imported in the reaction time in this section also can be received by this switch.

2. telephone dialing delay device as claimed in claim 1 is characterized in that, lie in this time of delay this hook switch from on-hook become the off-hook time begin the counting.

3. telephone dialing delay device as claimed in claim 1, it is characterized in that this control circuit also is connected in this input unit, this counter is an off-hook in this hook switch, and when this control circuit receives the first digit symbol, begin to count this section time of delay.

4. telephone dialing delay device as claimed in claim 1 is characterized in that this time of delay is greater than the reaction time of this switch.

5. telephone dialing delay device as claimed in claim 1, it is characterized in that, comprise that also a pulse/multiple output circuit frequently is electrically connected on this control circuit, after time of delay, changes into electric signal output with this numerical chracter that this control circuit received in intact this section of this rolling counters forward.

6. telephone dialing delay device as claimed in claim 5 is characterized in that this electric signal belongs to pulse mode.

7. telephone dialing delay device as claimed in claim 5 is characterized in that, this electric signal belongs to multiple pattern frequently.