JP3072536B2 - Cordless telephone - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to improvements in cordless telephones.

[0002]

2. Description of the Related Art A cordless telephone of this type is widely used in ordinary households and the like because of its compactness without arranging a telephone line, irrespective of its location, and compactness. FIG. 16 and FIG. 17 are block diagrams showing the main parts of a conventional cordless telephone base unit and handset unit. In the figures, 101 is a signal processing unit of the base unit constituted by a CPU and the like, and 102 is an antenna. 102a
A wireless transmission / reception unit of the base unit for transmitting / receiving a radio signal to / from the wireless handset 200, a line control unit 103 for controlling connection / disconnection of a line with a public telephone network,
104 is a display unit of the master unit, 105 is a key operation unit of the master unit constituted by a push button dial, 106 is a timer unit a for activating a control signal to be activated by an incoming call and calling a slave unit from the master unit, 107 is from electric signal to voice,
Or, a communication circuit unit of the base unit that converts voice into an electric signal; 108, a ringtone generation circuit of the base unit; 201, a signal processing unit of a slave unit including a CPU;
02a, a wireless transmission / reception unit of the slave unit for transmitting / receiving a radio signal to / from the master unit 100; 203, a display unit of the slave unit; 204, a key operation unit of the slave unit constituted by a push button dial; Is a timer means b for counting an intermittent reception cycle for the slave unit to receive a control signal from the master unit 100, 206 is a communication circuit unit of the slave unit, and 207 is a ring tone generation circuit of the slave unit.

The operation of such a cordless telephone at the time of an incoming call will be described with reference to time charts (U) to (Y) of FIG. An incoming call is immediately received and a ringtone is output from the ringtone generation circuit (V), and the timer means a106 is activated to transmit a control signal for calling the slave unit from the wireless transmission / reception unit 102 for a fixed transmission time (W). ). On the other hand, the handset 200 intermittently receives the control signal in a cycle Ti shorter than the transmission time of the control signal in order to suppress battery consumption irrespective of the operation of the base unit 100 (X). When the control signal is received, the ring tone of the slave unit starts ringing for the first time (Y). FIG. 18 shows the appearance of such a cordless telephone and the state of signal communication. However, the incoming call of the master unit and the incoming call of the slave unit are (Y)
As shown in (1), the time difference has occurred, and accordingly, the ringing sound of the parent device and the child device has the same time difference, causing the user to feel uncomfortable.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of such circumstances of a conventional cordless telephone, and
Even if the parent machine receives a call, the ringtone of the parent machine will not sound immediately,
Delay the start of ringing tone of the base unit to reduce the time lag of ringing sound between the base unit and the slave unit, or go further and reduce the time lag of ringing sound between the base unit and the slave unit. An object of the present invention is to provide a lost cordless telephone.

[0005]

A cordless telephone according to the present invention proposed to achieve the above object is provided with a timer means for repeating a time equal to an intermittent reception cycle at the same time as a termination of a telephone call of a child unit, The master unit has a signal processing unit for starting the ring tone in the ring tone generation circuit in synchronization with the timing, so that the master unit and the slave unit start the ring tone at the same time. Yes (Claim
1 ). If there is no communication of the slave unit for a long time in this configuration, it is conceivable that a gap occurs between the timing of the timer means of the master unit and the intermittent reception cycle of the slave unit,
To cope with this, in the cordless telephone proposed in claim 2 , the difference between the timing of the timer means of the master unit and the intermittent reception cycle of the slave unit is determined on the master unit side by a periodic signal from the slave unit. It is configured to be modified.

According to the cordless telephone of the present invention proposed in claim 1 , the base unit is provided with timer means for repeating time counting equal to the intermittent reception cycle of the slave unit. Since the ringing sound is started, the parent device and the child device can simultaneously start the ringing sound. Further, in the cordless telephone proposed in claim 2 , a deviation generated between the time measurement of the timer means of the master unit and the intermittent reception cycle of the slave unit is corrected by the master unit using a periodic signal from the slave unit. Therefore, the ringing tone of the parent device and the child device can always be kept at the same time.

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an example of the configuration of a base unit 1 as an example of a cordless telephone according to the present invention. Also,
Since the configuration of the slave unit is the same as the conventional example, the configuration example diagram of the conventional example,
Please refer to FIG. In the figure, reference numeral 11 denotes a timer which is activated at the time of an incoming call, and a timer means c for counting a predetermined set time until the base unit 1 starts ringing sound is constituted by a CPU or the like. This is a signal processing unit that causes the ringtone generation circuit 108 to sound a ringtone when the time is measured.

The operation of such a cordless telephone at the time of an incoming call will be described with reference to time charts (A), (B) and (D) of FIG.
To explain with reference to (F), when there is a call from the public line (A), the base unit 1 immediately receives an incoming call, but without activating the ringing tone, activates the timer means c11 and a106, and The wireless transmitter / receiver 102 starts transmitting a control signal for calling the mobile device 200 for a fixed transmission time measured by the timer means a106 (D), and the timer means c1.
When 1 measures a predetermined set time Tf, a ring tone is sounded for the first time (B). On the other hand, the slave 200 is the master 1
Irrespective of the above operation, the above control signal is intermittently received in a cycle Ti shorter than the transmission time of the control signal in order to suppress battery consumption (E). When the control signal is received, a ring tone sounds (F). FIG. 13 shows the appearance of such a cordless telephone and the state of signal communication.

FIG. 2 shows another example of the cordless telephone of the present invention.
Of shows a configuration example of the main terminal 2 is different from the main unit 1 of FIG. 1, by manually within the timer unit c11 is predetermined (<discontinuous reception cycle Ti of the handset), the set time Variable timer means 2 that can change
It is where it is 1. Since the configuration of the slave unit is the same as that of the conventional example, reference is made to FIG.

The operation of such a cordless telephone at the time of an incoming call is the same as that of the cordless telephone of FIG. 1 described above, except that the time Tv from the incoming call to the ringing of the base unit 2 by the ringing tone is determined by the variable timer means 21. It can be freely changed by manipulating the volume or the like (time chart (C) in FIG. 4).

FIG. 3 shows still another embodiment of the cordless telephone of the present invention.
The example of the configuration of the base unit 3 of the example is different from the base unit 1 of FIG. 1 in that a random number generation circuit 32 and a variable timer unit 31 are added instead of the timer unit c11.
The random number generation circuit 32 generates a random number at the time of an incoming call and inputs the random number to the timer means 31. The variable timer means 31 sets the random number within a predetermined range (<intermittent reception cycle Ti) of the handset in accordance with the input random number. The time is changed, and it starts at the same time as the setting change. Since the configuration of the slave unit is the same as that of the conventional example, reference is made to FIG.

The operation of such a cordless telephone at the time of an incoming call is the same as that of the cordless telephone of FIG. 1 , except that the time Tv from the incoming call to the ringing of the base unit by the ring tone is determined by the random number generation circuit 32 at the time of the incoming call. The variable timer means 31 randomly changes each time according to the generated random number (time chart (C) in FIG. 4).

FIGS. 5 and 6 show an example of the configuration of a base unit 4 and a handset 5 as still another example of the cordless telephone of the present invention.
The same parts as in the conventional example are denoted by the same reference numerals, and description thereof will be omitted. In the figure, reference numeral 41 denotes a timer means d and 40 of the base unit which repeats a time equal to the intermittent reception cycle at the same time as the end of the telephone call of the handset 5 and is constituted by a CPU or the like. The signal processing unit 50 of the master unit, which starts the ringing sound in the ringing tone generation circuit, is constituted by a CPU or the like, and is a signal processing unit of the slave unit that starts intermittent reception at the same time as the end of the call.

The operation of such a cordless telephone at the time of an incoming call is described in time charts (G) to (I) and (K) in FIG.
To explain with reference to (M), the slave unit 5 starts intermittent reception at the same time as the end of the call (G) (I), while the base unit 4 also detects the end of the call by the line control unit 103, The timer means d41 is activated to repeat the time counting equal to the intermittent reception cycle of the slave unit 5 (H). In this state, if there is a call from the public line (G), base unit 4 receives the call immediately,
Immediately without ringing the ringtone, a control signal for calling the slave unit 5 is transmitted from the wireless transmission / reception unit 102 for a fixed transmission time measured by the timer means a106 (K), and the reception of the timer means d41 is performed. A ringing tone is started at the first time later (L). On the other hand, the handset also receives the above control signal and starts ringing sound (M).
However, since the repetition period of the timer of the timer means d41 is equal to the intermittent reception cycle, the ringing of the master unit and the slave unit starts to ring at the same time. FIG. 13 shows the appearance of such a cordless telephone and the state of signal communication.

FIGS. 7 and 8 show still another example of the construction of the base unit 6 and the sub unit 7 of the cordless telephone according to the present invention.
The difference from the cordless telephones of FIGS. 5 and 6 is that the timer unit e71 of the slave unit 7 is added and the signal processing units 40 and 50 of the master unit 6 and the slave unit 7 are replaced with the signal processing units 60 and 70, respectively. . The timer means e71 measures time in a fixed cycle in synchronization with the intermittent reception cycle. The signal processing unit 70 of the slave unit 7 is constituted by a CPU or the like.
Wireless transmission / reception unit 2
02 transmits a timer correction signal. The signal processing unit 60 of the base unit 6 outputs the set signal to the timer means d41 immediately upon receiving the timer correction signal by the wireless transmission / reception unit 102.

The operation of such a cordless telephone at the time of an incoming call is substantially the same as that of the cordless telephone shown in FIGS. 5 and 6 , except that the timer means e71 of the slave unit 7 measures a fixed period of time in synchronization with the intermittent reception cycle. When the time is measured, a timer correction signal is transmitted from the slave unit 7 (time chart (J) in FIG. 9). The master unit 6 receives the correction signal, sets the timer means d41, and sets the timer means d41.
This is to eliminate the time lag t between the timed repetition cycle of 41 and the intermittent reception cycle (time chart (H) in FIG. 9). FIG. 14 shows the appearance of such a cordless telephone and the state of signal communication.

FIGS. 10 (a) and 11 show still another example of the structure of the base unit 8 (a) and the slave unit 9 of the cordless telephone according to the present invention. The description is omitted by attaching reference numerals. In the figure, reference numeral 90 denotes a base station 8 (a) which receives a control signal from the base unit 8 (a) notifying an incoming call by intermittent reception and causes the ringtone generation circuit 207 to sound a ringtone. )), A signal processing unit of the slave unit 9 which outputs a reply signal to the ring tone generation circuit 10 at the same time that the master unit 8 (a) receives the reply signal.
8 is a signal processing unit of the base unit 8 (a) that sounds a ring tone from the base unit 8 (a).

The operation of such a cordless telephone at the time of an incoming call will be described with reference to time charts (N) to (S) of FIG. 12. If there is a call from a public line (N), the base unit 8 ( Although a) is received immediately, a control signal for calling the handset 9 is transmitted from the wireless transmission / reception unit 102 for a fixed transmission time without ringing the ringtone immediately (O). On the other hand, the child device 9 has no relation to the above operation of the parent device 8 (a),
In order to suppress battery consumption, the above-mentioned control signal is intermittently received at a cycle Ti shorter than the transmission time of the control signal (P). At the same time as ringing the tone, the wireless transmitting / receiving unit 202 outputs a reply signal to the master unit 8 (a). The master unit 8 (a) receives the reply signal by the wireless transmission / reception unit 102 and simultaneously sounds the ring tone from the ring tone generation circuit 108 for the first time. FIG. 15 shows the appearance of such a cordless telephone and the state of signal communication.

Furthermore cordless telephone of the present invention is described, in which the above in FIG. 10 (a), in the cordless telephone of Figure 11, return signals from the slave unit 9 is proposed in consideration of the case where not returned, Figure Master unit 8 (b) at 10 (b)
Is shown. The slave unit is the same as in FIG. In FIG. 10B, reference numeral 81 denotes a timer means f which is activated at the time of an incoming call and measures a predetermined set time (<intermittent reception cycle Ti of the slave unit), and 80 (b) does not receive the above-mentioned return signal. When the timer means f has counted the set time, it is a signal processing section of the base unit which starts ringing of the base unit.

The operation of such a cordless telephone at the time of an incoming call is substantially the same as that of the cordless telephone of FIGS. 10A and 11B. When the timer means f measures the set time without receiving a signal, the ringing tone generation circuit 1
From 08, a ringing tone sounds.

[0025]

According to the cordless telephone of the present invention proposed in claim 1 , the parent device and the child device can simultaneously start ringing. Further, in the cordless telephone proposed in claim 2 , in the cordless telephone proposed in claim 1 , even when there is no telephone call for a long time in the cordless telephone, the ringing tone of the master unit and the slave unit is always set to be simultaneous. I can put it.

[Brief description of the drawings]

FIG. 1 is a configuration example diagram of a base unit of an example of a cordless telephone according to the present invention.

FIG. 2 is a configuration example diagram of another example of a base unit of the cordless telephone according to the present invention.

FIG. 3 is a structural example diagram of a base unit of still another example of the cordless telephone of the present invention.

FIGS. 4A to 4F are time charts for explaining the operation of the cordless telephone according to the present invention shown in FIGS. 1 to 3 ;

FIG. 5 is a structural example diagram of a base unit of still another example of the cordless telephone of the present invention.

FIG. 6 is a structural example diagram of a slave unit of the cordless telephone according to the present invention shown in FIG . 4 ;

FIG. 7 is a structural example of a base unit of still another example of the cordless telephone of the present invention.

FIG. 8 is a structural example diagram of a slave unit of the cordless telephone according to the present invention shown in FIG . 7 ;

9 (G) to 9 (M) are time charts for explaining the operation of the cordless telephone according to the present invention described in FIGS. 5 to 8. FIG .

FIG. 10 (a) shows still another cordless telephone according to the present invention.
It is a structural example figure of the parent machine of an example. (B) is a structural example diagram of a base unit of still another example of the cordless telephone of the present invention.

11 is a configuration example diagram of handset of the cordless telephone of the present invention described in Figure 10 (a).

FIGS. 12 (N) to (T) are time charts for explaining the operation of the cordless telephone according to the present invention shown in FIGS. 10 and 11 .

FIG. 13 is a diagram showing the appearance and signal communication status of the cordless telephone according to the present invention shown in FIGS. 1 to 6 ;

[14] FIG. 7 is a diagram showing the communication status of the cordless telephone appearance and the signal of the present invention described in FIG.

FIG. 15 is a diagram showing the appearance and signal communication status of the cordless telephone according to the present invention shown in FIGS. 10 and 11 .

FIG. 16 is a configuration example diagram of a parent device of a conventional cordless telephone.

FIG. 17 is a configuration example diagram of a slave unit of a conventional cordless telephone.

FIG. 18 is a diagram showing the appearance of a conventional cordless telephone and the state of signal communication.

FIG. 19 is a time chart for explaining the operation of a conventional cordless telephone.

[Explanation of symbols]

1, 2, 3, 4, 6, 8 (a), 8 (b) ... parent machine 5, 7, 9 ... slave machine 10, 40, 50, 60, 70, 80 (a), 80
(B), 90: Signal processing unit 102, 202: Wireless transmission / reception unit 102a, 202a: Antenna 103: Line control unit 104: Display unit 105: Key operation unit 11, 41 , 71, 81, 106, 205 ... timer means 21, 31, ... variable timer means 107 ... communication circuit 108, 207 ... ringtone generation circuit SP ... speaker M ... microphone

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H04M 1/00 H04M 1/72-1/737

Claims (2)

(57) [Claims] Claims 1. A cordless telephone which delays the ringing tone of a base unit when an incoming call is received and eliminates a time lag with the ringing tone of a slave unit. By providing the master unit with a timer means for repeating a time equal to the following, and a signal processing unit for starting the ringing sound in the ring tone generation circuit in accordance with the counting after the incoming call, the master unit and the slave unit are provided. A cordless telephone that starts ringing at the same time. Wherein wherein the deviation caused between the intermittent reception cycle of the clock and the slave unit of the timer means of the master unit, in claim 1 which was set to be modified in the main device by a periodic signal from the slave unit Cordless telephone.