KR930001444B1 - Calling period display system - Google Patents

Abstract

The number of calls is displayed and the remaining time for a regular call is displayed for convenience of a user. The telephone for displaying the number of calls and ramining time for the last call includes a frequency divider (10) for dividing frequency generated by a crystal oscillator to generate one pulse per one second, a three minute timer (20) for displaying remaining time of ordinary call by turning off LEDs (LD1-LD9) by 20 second intervals, a one minute timer (40) for displaying remaining time of a distance call by turning off LEDs (LD1-LD6) by 10 second intervals, the number of call display unit (30) for displaying the number of telephone calls, and a digital timer (50) for displaying call time using seven segments.

Description

Telephone device displaying remaining time and call volume by call

1 is a circuit diagram of the overall circuit of the present invention.

Figure 2a is a display portion illustrating the operating state of the three-minute timer unit, call volume display unit, one minute timer unit and the digital timer in the present invention.

FIG. 2B is a display unit which attaches the state of FIG. 2A to the outside of the telephone so that the caller can see from outside.

3 is a divided circuit diagram of the entire circuit of the present invention.

4 is a circuit diagram of a 3-minute timer unit of the entire circuit of the present invention.

5 is a call amount display unit of the entire circuit of the present invention.

6 is a one minute timer circuit diagram of the entire circuit of the present invention.

7 is a digital timer circuit diagram of the entire circuit of the present invention.

Figure 8a is a perspective view of the present invention installed in a landline telephone.

8b is a perspective view of the present invention installed in a wireless telephone.

* Explanation of symbols for main parts of the drawings

10: frequency divider circuit 20: 3 minute timer

30: call volume display unit 40: 1 minute timer unit

50: digital timer SP: piezoelectric speaker

N ₁ -N ₇ : non gate A ₁ , A ₂ : end gate

LD: LED (Light Emitting Diode)

The present invention controls the contents of the conversation with the other party by displaying the length of time so that the user of the telephone can know the number of calls during the call and the end time per call, and up to three minutes to make the last one call in the city call and the international call. In this case, using up to one minute can not only reduce the telephone bill but also give the caller the psychological effect of shortening the talk time.

Recently, only a digital clock is attached to a telephone to let the caller know only the time of the call.

In other words, the digital timer is activated at the beginning of the call so that the caller only cares about speaking or listening. Even though the usage time is displayed, the usage time is divided into three minutes for one call, several minutes for several seconds, and the rest of the call. Not only is it impossible to calculate how many minutes remain to fill a single call, but it is quite difficult to adjust the conversation to the end of the last one call.

For example, in the case of a public telephone, an alarm sounds tens of seconds before the end of a call, but the caller has a dull sense of time (hourly unit).

In order to solve this inconvenience, the present invention displays the number of calls and expresses one call (3 minutes for local calls and 1 minute for international calls) as a length to display the remaining time on one call, thereby reducing the anxiety of the caller. At the same time, it is possible to finish the call while filling the remaining time, and also to shorten the call time, thereby reducing the telephone bill. This will be described in detail with reference to the accompanying drawings.

Resistor (R ₁ ), (R ₂ ) and condenser (C ₁ -C ₄ ), crystal oscillator (75), oscillator (IC ₅ ) and divider (IC ₆ ) to telephone lines (L ₁ ) and (L ₂ ) A counter (IC ₁₁ -IC ₁₃ ), an end gate (A ₁ ), a binary counter (IC ₁₅ ), a decoder (IC ₁₈ ), and JK (JK) to which a divided frequency divider 10 is connected and a non-gate (N ₂ ) is connected. ) The counter (IC _11-13 ) input side (IC ₁₁ ) of the 3-minute timer unit 20 configured as a flip-flop (IC ₂₀ -IC ₂₄ ), a non-cate (N ₃ ) and an LED (LE ₁ -LE ₉ ). The output terminal Q of the divider IC _{6, which} is the output side of the divider circuit 10, is connected to the clock terminal.

In addition, a segment is connected to the inverters I ₁ -I ₂ , the piezoelectric speaker SP, and the drive elements IC ₃₂ -IC ₃₃ , respectively, to configure a call amount display unit 30 to set a 3-minute timer on the input side of the inverter I ₁ . It is connected to the output of the unit 20, that is, the output terminal Q ₉ of the decoder IC ₁₈ .

Then, the decoder (IC ₄₅ ) and the JK flip-flop (IC ₄₇ -IC ₄₉ ) non-gate (N ₅ ) are connected to the binary counter (IC ₄₁ -IC ₄₂ ) to which the non-gate (N ₄ ) and the endmate (A ₂ ) are connected. The connection 1 minute timer 40 is configured to be connected to the divider IC ₆ output terminal Q of the frequency divider circuit 10.

Drive elements (IC ₅₁ , IC ₅₂ , IC ₅₃ , IC ₅₄ , IC) to which the non-gates (N ₆ , N ₇ ) are connected to drive the segments (59, 60) for displaying seconds and the segment (58) for displaying time. ₅₅ ) are connected to each other to configure the digital timer unit 50, but the input terminal of the drive element IC ₅₁ for constructing the segments 59 and 60 for displaying the seconds divider IC of the frequency divider circuit 10 ₆ ) The drive element IC ₅₃ for connecting to the output terminal Q and driving the segments 56, 57, and 58 which simultaneously display the minutes and the time is output from the decoder IC ₄₅ of the one-minute timer unit 40. Connected to line Q ₆ .

This is because a clock pulse of one pulse is output in one second from the divider IC ₆ output terminal Q of the frequency divider circuit 10, and one from the output terminal Q ₆ of the decoder IC ₄₅ of the one-minute timer unit 40 is output. This is because 1 pulse is output per minute.

In the present invention configured as described above, the divider IC ₆ output side Q of the frequency divider circuit 10 connected to the telephone lines L ₁ and L ₂ generates a telephone signal to pick up the handset or make a call. For example, a clock pulse of 1 ms is output one pulse per second and is applied to the counter (IC ₁₁ ) clock terminal (▷) of the three-minute timer unit 20 and at the same time, the binary counter (IC) of the one-minute timer unit 40 is used. ₄₁ ) applied to the clock stage (▷) and applied to the drive element IC ₅₁ of the digital timer 50, and thus all LEDs (LD ₁ -LD ₉ ) and one minute timer section of the three-minute timer section 20. All LEDs (LD ₁ -LD ₆ ) of the 40 are turned on and made into a standby state ("0") so that the segment 59 representing the seconds of the digital timer 50 can be counted. Segment 34 is reset to " 1 " to counter from one.

This is because local calls are counted as one currency from the moment of the call.

Next, the operation of the three-minute timer unit 20 and the operation state of the one-minute timer unit 40 in the operation of the present invention will be described separately. Also, in the case of a local call, an international call, and a long distance call The description will be divided into.

[3 minutes of timer unit 20 operation]

In the counter (IC ₁₁ -IC ₁₃ ) of the 3-minute timer unit 20, a clock pulse of 1 pulse is received from the divider IC ₆ output terminal Q in 1 second and counted, and when the time reaches 20 seconds, the output signal is 10100 _(2). After passing through the AND gate A ₁ to the clock terminal ▷ of the binary counter IC ₁₅ , the input pulse transfers the count state initialized to 0000 ₍₂ ) to 0001 ₍₂₎ . Applied to decoder IC ₁₈ .

The output line Q ₁ is selected by this decoder IC ₁₈ to output the output " 0 " and applied to the clock terminal? Of the JK flip-flop IC ₂₀ .

In the JK flip-flop (IC ₂₀ ), LED ₁ (LD ₁ ) is turned off by outputting the current state (Current State) high "1" to low "0".

When it counts from 0 and reaches 21 seconds, the output signal of the counter (IC ₁₁ -IC ₁₃ ) becomes 10101 ₍₂₎ , and passes through the non-gate (N ₂ ) to clear the counter (IC ₁₁ -IC ₁₃ ) Let's do it.

Therefore, after 40 seconds, the output signal of the counter (IC ₁₁ -IC ₁₃ ) becomes 10100 ₍₂₎ , passes through the AND gate (A ₁ ), and is applied to the clock terminal (▷) of the binary counter (IC ₁₅ ). 0001 ₍₂₎ 0010 ₍₂₎ is transferred to the decoder (IC ₁₈₎ is applied, and a decoder (IC _18), an output line (Q ₂₎ is selected, J. K flip-flop (IC _20), an output of "0" in a Is applied to.

In this J flip-flop IC ₂₀ , LED ₂ (LD ₂ ) is turned off by outputting a low “0”.

Repeat this process for 60 seconds, then transition from binary counter (IC ₁₅ ) to 0011 ₍₂₎ , LED ₃ (LD ₃ ) goes out, and in 80 seconds, transition from binary counter (IC ₁₅ ) to 0100 ₍₂₎ , LED ₄ When (LD ₄ ) turns off and reaches 100 seconds, the transition from the binary counter (IC ₁₅ ) to 0101 ₍₂ ) turns off the LED ₅ (LD ₅ ) .In this way, when the last 180 seconds (3 minutes) is reached, the binary counter (IC _The output values (QA, QD) transitioned from ₁₅ ) to 1001 ₍₂₎ are non-needed to clear all (N ₃ ) J flip-flops (IC ₂₀ -IC ₂₄ ) to clear all LEDs (LD ₁ -LD ₉ ). Turn it on again. (Therefore, LD ₉ is not turned off.)

That is, it takes 20 seconds for one LED to go out, and therefore, 180 seconds (3 minutes) for 9 to go out.

This is a call in the city (three minutes).

At the moment of 180 seconds (3 minutes), all the LEDs LD ₁ to LD ₉ are turned on, and an alarm sound is generated in the piezoelectric speaker SP, and 2 is displayed in the segment 34 of the call volume display unit 30.

This is because the local call becomes one call at the beginning and becomes two calls in three minutes and one second.

When 9 is input to the segment 34 of the call volume display unit 30 and the next pulse is input, a ripple carry occurs, and the segment 35 is set to 1 and the segment 34 is changed to "0" which is the initial state.

By repeating this process, when the segments 34 and 35 reach 99, they are reset to the initial state of 00, which means 99 calls, that is, 4 hours and 57 minutes, and is displayed on the digital timer 50.

[1 minute timer operation]

Next, the clock pulse output from the divider IC _{6 of the} frequency divider circuit is applied to the binary counter IC ₄₁ clock terminal? Of the 1 minute timer 40.

When counting from 0 second to 10 second, the output signal becomes 1010 ₍₂₎ , passes through the AND gate A ₂ , and is applied to the next binary counter (IC ₄₂ ), and the applied pulse is the initial count state of 0000 ₍₂₎ . State) is input to the decoder IC ₄₅ by transitioning to 0001 ₍₂₎ .

In the decoder IC ₄₅ , the output line Q ₁ is selected and the LED ₁ LD ₁ is turned off by applying an output of “0” to the J flip-flop IC ₄₇ .

When it is 11 seconds, it becomes the output signal 1011 ₍₂₎ of the binary counter (IC ₄₁ ), and it clears through the non-negative gate (N ₄ ) and counts again until the next 10 seconds.

The repeat the process and if 20 seconds is a transition from the binary counter (IC ₄₂₎ to 0010 ₍₂₎ is transferred to the 0011 ₍₂₎ from the binary counter (IC ₄₂₎ when the light-off the LD ₂ and 30 seconds and turned off the LD ₃ In this way, when the last 60 seconds is reached, the transition from the binary counter (IC ₄₂ ) to 0110 ₍₂₎ causes the output value (QB, QC) to be non-N (N ₅ ) to clear all the IC flip-flops (IC ₄₇ -IC ₄₉ ). Both (LD ₁ -LD ₆ ) light up again (thus LD6 does not go out).

That is, it takes 10 seconds to turn off one LED, and therefore 60 seconds to turn off all six LEDs.

International calls are charged every minute, which helps with international calls.

At the time of 60 seconds (1 minute), all the LEDs LD ₁ to LD ₆ of the timer unit 40 are turned on, and a clock pulse is output from the output line Q ₆ of the decoder IC ₄₅ . 1 is added to the segment 56 of the drive element IC ₅₃ of the digital timer unit 50, and when 9 minutes, 9, a ripple carry occurs, and 1 is added to the segment 54 and the segment ( 53), the initial state is changed to "0".

This process is repeated and cleared at 59 to 60 minutes, and 1 is added to the time unit display segment 58.

By repeating this process, when the time-segment 58 becomes 9 to 10, that is, 10 hours, it clears through the non-negative gate N ₇ and resets to the initial state 00.

Finally, the segments 59 and 60 representing the seconds cause the clockples output from the divider IC ₆ to be applied to the clock terminal of the drive element IC ₅₁ to drive the segments 59 and 60.

Therefore, the segments 59 and 60 count and display only seconds.

After the call, the clock pulse is not output from the frequency divider IC _{6 of the} frequency divider circuit 10, and thus all the circuits are stopped.

And the remaining LED and one-minute timer unit 40, the remaining LED and Volume display unit 30, electrolytic a digital timer 50 is not cleared capacitor (C ₅₎ of the straight 3-minute timer section 20, even if the call is ended The time constant is cleared afterwards so that the phone user can check it right after the call.

[City calls]

The person making the local call only needs to watch the timer unit 20 for 3 minutes, and when the LED 7th is turned off and the LED ₈ and LED ₉ are lit (40 seconds remain), the call is terminated by the most economical and Visual effects help to shorten the call.

In addition, since three LEDs of the 3-minute timer unit 20 indicate 1 minute, the operation is the same as 6 LEDs of the 1-minute timer 40.

That is, if six or less LEDs of the 3-minute timer unit 20 are turned off and the LEDs 7, 8, and 9 are turned on, all of the LEDs of the 1-minute timer 40 are turned on. The effect of enlarging the LEDs 1 to 6 of the timer 40 is obtained.

[In case of international call]

If you make an international call, the rate is added every minute, so you only need to watch for 1 minute timer (40), LED ₄ or less is off, and when the LED _{5, 6} is lit, it is most economical to finish by controlling the call. Visual effects help to shorten the call.

If the international caller watches only the 3 minute timer 20 and makes a call, only 3 LEDs will turn off for 1 minute and will be insensitive to the time elapsed. Made.

[For long distance calls]

In case of long-distance call, it is expressed as frequency by second according to distance, and 1 degree is 25 won.

For example, 45 seconds is one degree up to 30 km, and 4.5 seconds is displayed as one degree more than 101.

Therefore, it is not only technically difficult to display the call time in seconds by region on the phone, but the time required for 1 degree is so short that the practicality is very small even if the remaining time per 1 degree is known. Even if it changes, the usage time (seconds) is a change, not a fee.

Therefore, only the long distance call is displayed as a digital timer, and the usage counting method must be attached to the telephone.

The operational effects of the present invention as described above are as follows.

During a call, especially if you talk for a long time, both the caller and the receiver can see the amount of call and the remaining time per call at a glance, so you can immediately solve your frustration. This allows you to control the conversation so that you can finish the conversation by filling the remaining time, and the other party is also looking at the same timer attached to your phone, so you are prepared to end the conversation in silence. In this way, you can get warm feelings for saving your bills, and if you are a telephone user, you are sensitive to the phone bill you pay once a month. Few people will not think about the fee each time.

The present invention has been made above all for such savings.

That is, in the case of a local call, the first three minutes and one call is 25 won, but from the second call, the additional charge is added at 25 won per one call, so more than two calls can be said to be 50 won per call.

Therefore, if two minutes exceeding two minutes, which is one call, two minutes and 58 seconds remain, but the one-call fee of 50 won is very wasteful on the user's side.

Moreover, for international calls, Madagascal (country name) costs 1,940 won per minute, and almost all countries calculate more than 1,000 won per minute. In the future, as the globalization era progresses, these tariffs will increase.

If you try to save money in this way, the local call alone can save you more than 3,000 won a month, for example. (For example, if you make an average of 6 calls per day in a family, if you save 2 minutes, you can save 3,000 won a month for 100 won a day.)

I think that's exactly what the monetary hour system is for.

And the present invention can see the same effect when attached to a cordless phone.

In addition, if the long-distance call is also a manual call, charges are added for every three minutes and one call.

Public phones are particularly effective.

In other words, if you make a phone call with only 20 won in your pocket, you can't know how much time has passed during the call. It is quite ambiguous.

The present invention has been made to prevent such inconvenience in advance.

In addition, the person who is chased by the time and waits in line can see the remaining time of the caller, so that it can be frustrating and can prepare the caller for the next caller.

Therefore, the present invention will be a feature of the present invention that can contribute to the development of democracy by raising the democratic attitude of democratic citizens by using the rate-saving spirit through the currency reduction and paying and using as much as used.

Claims (4)

Dispensing circuit (10) consisting of OA gate (O ₁ ) and NAND gate (N ₁ ) condensers (C _{1 to} C ₄ ), resistors (R ₁ , R ₂ ), oscillator (IC ₅ ) and divider (IC ₆ ) ) Is connected to the counters (IC _{11 to} IC ₁₃ ), and the dividing circuit 10 has a non-gate (N ₂ ) and an end gate (A ₁ ), a binary counter (IC ₁₅ ), a decoder (IC ₁₈ ), and a JK flip. A binary counter (IC ₄₁ , IC ₄₂ ) is connected to the circuit with a flop (IC _{20 to} IC ₂₄ ), a 3-minute timer unit 20 to which LEDs _{1 to} LED ₉ are connected, and a call amount display unit 30 to display 3 minutes. 1 minute timer unit 40 and digital timer unit to which NAND gate (N ₄ ), AND gate (A ₂ ) decoder (IC ₄₅ ), JK flip-flop (IC ₄₇ -IC ₄₉ ), and LED ₁ -LED ₆ are connected. (50) A telephone apparatus which displays remaining time and call volume for each call, characterized in that the whole is connected in a circuit. The frequency divider circuit 10 has a non-gate (N ₂ ) and an end gate (A ₁ ), a binary counter (IC ₁₅ ), a decoder (IC ₁₈ ), a JK flip-flop (IC ₂₀ -IC ₂₄ ), Telephone device displaying the remaining time and call volume for each call, characterized in that the three-minute timer 20 connected to the LED _{1 ~} LED ₉ connected in a circuit. The method of claim 1, wherein the inverter (I ₁ -I ₂₎ and a piezoelectric speaker (SP) and the drive element (IC ₃₂ -IC ₃₃₎ connects the call volume segment display section 30 configuration and the inverter (I ₁₎ to the respective A telephone apparatus for displaying the remaining time and the call volume for each call, characterized in that the input side is connected to the output terminal (Q ₉ ) of the decoder (IC ₁₈ ) of the 3-minute timer unit (20). Binary counter _{(IC 41), (IC 42} ) according to claim 1, wherein the gate neondeu (A _2), AND gates (A _2), the decoder (IC ₄₅₎ and the second K flip-flop (IC ₄₇ -IC ₄₉₎ and LED _1- LED ₆ is connected to the circuit to configure the one-minute timer unit 40, characterized in that the phone device displays the remaining time and call volume for each call.

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