JP3535720B2 - Display device for mobile phone - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for displaying a display on a portable telephone at a position away from the telephone. 2. Description of the Related Art Normally, the ring tone of a portable telephone uses an electronic sound of a single tone having a similar tone regardless of the model, so that a plurality of persons simultaneously hold the portable telephone. , It is difficult to determine which telephone has received the call. [0003] To cope with such inconvenience, by utilizing the fact that the output power of the incoming call response signal transmitted from the telephone to the base station at the time of the incoming call is large, by detecting this signal and activating a separately provided vibrator, the incoming call is received. There has also been proposed one that notifies the call timing by vibration. [0004] However, the vibrator using the above-mentioned response signal is such that a call arrival time to a telephone housed in a bag or the like can be recognized at a position away from the telephone. For this reason, the detection sensitivity needs to be increased to some extent, and there is a problem in that the terminal may erroneously react even when a telephone of another person present in the vicinity is called. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and various types of portable telephones are provided while preventing display operations from being performed upon receiving a call to a portable telephone owned by another person. It is an object of the present invention to provide a display device capable of accurately grasping a display state from a position separated from the display state. As shown in FIG. 1, a display device according to the present invention is provided with a base unit 28 provided on a portable telephone 10 and a base unit 28 separated from the base unit 28. The telephone 10 described above further includes a terminal capable of outputting a first signal in conjunction with a predetermined detection operation. The above-mentioned base unit 28 is detachably attached to the telephone set 10 and the above-mentioned telephone set 1
A second input terminal connected to the input terminal of the telephone 10; a second signal can be transmitted in a wireless state in conjunction with the input of the first signal transmitted from the telephone 10; 32 performs a predetermined display operation when the second signal output from the master unit 28 is detected. The output terminal 38 of the telephone 10 is located in the battery compartment 18 as shown in FIG.
It is preferable to form it integrally with the lid 26 that closes 8.
The first signal sent from the telephone set 10 to the master unit 28 has a plurality of types, and the second signal sent from the master unit 28 corresponds to the type of the first signal sent from the telephone set 10. The child device 32 can output the third signal corresponding to the difference between the codes, and can display the content corresponding to the third signal. As described above, according to the present invention, a signal necessary for display is taken out from the telephone 10 side, a signal is sent from the base unit 28 to the handset 32 in a wireless state, and the handset 32 side receives a predetermined signal. Since the display is performed, various display states on the telephone 10 can be accurately grasped from a position apart from each other while preventing unnecessary display operations from being performed when a call is received by a portable telephone owned by another person. it can. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example in which a display device according to the present invention is applied to a PHS will be described. However, the present invention is not limited to this, and various types of portable devices such as digital and analog mobile phones can be used. It is needless to say that the present invention can be applied to almost any telephone. Here, the PHS type telephone 10 has basically the same configuration as the conventional one having the same configuration as shown in FIG. 1 and has a predetermined electronic circuit illustrated in FIG. 12 is provided with a flat rectangular main body case 14 with a receiving speaker, a display, an operation key unit, and a transmitting microphone (not shown) provided on the front side thereof. The antenna 16 is disposed at a position closer to the antenna, and a battery chamber 18 is formed at the lower side of the rear surface. As shown in FIGS. 2 and 3, the battery chamber 18 has a space inside the main body case 14 large enough to removably accommodate a battery pack 22 having a rechargeable battery 20 therein. The opening 24 is closed by a lid 26 so as to be freely opened and closed. In the telephone 10 embodying the present invention, in addition to the above-described structure, an output means for various display signals is provided in the battery compartment 18, and the electronic circuit 3 of the base unit 28 is provided inside the lid 26.
0 is integrally housed, and a slave unit 32 is provided outside. The signal output means provided inside the battery compartment 18 extends a terminal block 36 from the bottom surface 34 of the battery compartment 18 and three electrode terminals 38 are provided on the terminal block 36 at a predetermined interval to form a straight line. It is arranged in. In this embodiment, as shown in FIG. 4, two terminals 38a and 38b for outputting a power supply voltage output from the rechargeable battery 20 are provided.
One terminal 38c for outputting an incoming signal output from the control unit 40 for driving incoming display means such as a ringer and a vibrator at the time of an incoming call is provided. The lid 26 has, on its lower edge, a locking claw 44 that protrudes into the locking groove 42 on the battery chamber 18 side, and has a claw 46 extending on the upper edge so as to be able to protrude and retract into the battery chamber 18. A mounting groove 48 into which the battery pack 18 is fitted is provided.
Is closed in a state where it is stored. The lid 26 is further provided with a partition wall 50 on its inner surface side to provide a storage room 54 for the parent device 28 between itself and an outer peripheral wall 52, while abutting against a terminal block 36 provided on the battery chamber 18 side. A socket 56 into which the terminal block 36 fits, and electrically connects the base unit 28 and the telephone 10 via an input terminal 58 provided in the socket 56 at a position corresponding to the electrode terminal 38 on the terminal block 36. Connect to The master unit 28 includes an ID encoder 60 and a transmitter 62, as shown in FIG. 4, and starts the ID encoder 60 by a control signal S1 output from the telephone 10 side. The operation timing of the transmitter 62 is regulated by the ID code signal S2. The ID encoder 60 has four channel selection terminals TX1 to TX4. When an input signal to the selection terminals is "H", the ID encoder 60 enters a standby mode to maintain a low current consumption state. When the terminal is grounded and set to "L" level, a serial ID code signal S2 for specifying an ID number corresponding to the terminal is taken out from the output side. In this embodiment, it is assumed that only one type of display operation is performed, and the selection terminal TX1 of the first channel is selected.
Is provided with a switching element 64, and the switching element 64 is turned on in conjunction with the input of the control signal S1 output from the control unit 40 of the telephone 10 described above.
The D encoder 60 is started, and an ID code signal S2 for specifying the first channel is sent to the transmitter 62. The transmitter 62 is a crystal oscillator that generates a carrier signal in, for example, a 300 MHz band in conjunction with the application of a power supply voltage.
And the ID sent from the ID encoder 60 described above.
By controlling the switching circuit 66 to be turned on / off by the code signal S2, the carrier signal output from the transmitter 62 is interrupted by the ID code signal S2. This output signal S3
Is transmitted in a wireless state by a transmission antenna 68 formed by printed wiring on a circuit board to a slave 32 arranged at a distance from the telephone 10. The child device 32 is housed in a small case 70 that can be stored in a breast pocket, for example, as shown in FIG.
8, a receiver 72 for extracting an ID code signal S4 from a signal S3 transmitted in a wireless state by a transmitter 62, a decoder 74 for the ID code signal S4, and an input timing of a display signal S5 output from the decoder 74. And an electronic circuit 78 composed of a vibrator 76 that operates. The receiver 72 selectively receives the signal S3 in the 300 MHz band, which is the frequency of the carrier signal in the transmitter 62, in the tuning circuit 82 via the receiving antenna 80, and amplifies the signal S3 in the high frequency amplifier circuit 84. The signal is input to the detection circuit 86. The detection circuit 86 takes out the ID code signal S4 in the baseband state from the output terminal after the frequency is reduced by the local oscillation circuit 88 connected to the outside. The extracted ID code signal S4 is input to a waveform shaping circuit 90 to shape the waveform into a rectangular waveform, and then the ID decoder 74
Is input to The ID decoder 74 corresponds to the channels TX1 to TX4 set on the master unit 28 side, and is taken out from the corresponding output terminals RX1 to RX4 when an ID code signal S4 for specifying the selected channel is input. Display signal S5
Is changed from the “H” level to the “L” level, and the light emitting element 92 provided on the upper surface of the case 70 is turned on to indicate that the signal S3 from the master unit 28 has been received. . In this embodiment, since the first channel TX1 is fixedly selected by the master unit 28, a switching circuit 94 is provided on the output side of the first channel RX1.
By turning on the switching circuit 94 with the display signal S5, the motor 96 of the vibrator 76 is energized, and the motor 96 is rotated to notify the arrival time by vibration. The display state due to the vibration is canceled by pressing the reset switch 98 provided on the upper surface of the case 70, and the intermittent reception state is maintained until the next signal is input. The voltage Vs applied to the motor 96 of the vibrator 76 is controlled to increase gradually or linearly or stepwise from the start of application, so that psychological shock due to sudden generation of strong vibrations is prevented. Can be softened. By the way, since the slave unit 32 is always carried, it is preferable to limit the number of batteries used to one because it is necessary to reduce the size of the slave unit as much as possible. Many require multiple batteries. Therefore, the power supply circuit 100 according to the present embodiment uses only one 1.5 V battery 102 as a power supply, includes a booster circuit 104, and secures a voltage Vs for driving an IC of about 4.5 V, for example. ing. Further, between the battery 102 and the booster circuit 104, a manual power switch 106 and an automatic switch 110 for performing an intermittent on / off operation by the oscillation circuit 108 are provided. The driving timing is selected, and the IC driving voltage Vs is output intermittently at time intervals specified by the frequency of the oscillation circuit 108. A display signal S5 is applied from the output terminal of the ID decoder 74 to the input side of the automatic switch 110,
Until the specific ID code signal S4 is received, the display signal S5 from the output terminal is at “H” level.
08, the input level to the automatic switch 110 becomes “L” in conjunction with the reception of the ID code signal S4, and the automatic switch 1
By forcibly turning on 10 and applying the battery voltage to the booster circuit 104 at all times, the receiver 72 is continuously operated. If the display means on the telephone set 10 can display the contents separately, it is also possible to increase the number of electrode terminals 38 on the terminal block 36 described above and to extract necessary signals from the terminals from the control unit 40 and use them. It is possible. Signals that can be extracted from the control unit 40 of the telephone 10 include an indication as to whether or not the electric field strength at that location is suitable for telephone communication, an indication of schedule management using a clock function, an indication of a dead battery during use, and a full indication during charging. Signals for indicating charging and indicating that a call has been received at a specific telephone number set in advance are given. However, the present invention is not limited to these, and it is needless to say that signals can be arbitrarily selected. In the above case, the telephone 10 is provided with a signal output terminal individually for each display of the content, while the main unit 2
On the 8 side, an input terminal 58 is provided corresponding to each output terminal, and each input terminal 58 is separated and connected to a channel selection terminal of TX1 to TX4 of the ID encoder 60, so that the display contents of the telephone 10 can be handled. Thus, a signal modulated with a different ID is output from master device 28. On the other hand, on the slave unit 32 side, the display signal is output separately from the corresponding output terminals of RX1 to RX4 in the ID decoder 74 corresponding to the difference of the ID code, so that a different display is performed correspondingly. Is also possible. In the above-described embodiment, an example is shown in which the lid 26 and the battery pack 22 are separated from each other. However, the present invention is not limited to this, and the lid 26 may be integrated with the battery pack 22. It may be something. In addition, the base unit 28 is not formed integrally with the lid 26, but is formed as a thin plate-shaped separate body, and is interposed between the bottom surface 34 of the battery chamber 18 and the battery pack 22. The shape and the arrangement position of the case for housing 30 can be arbitrarily changed. Further, the display method on the slave unit 32 side can be implemented by appropriately changing the display method such as displaying by sound or light instead of or in addition to the vibration display by the vibrator 76. It can also be displayed as figures and graphs using liquid crystal. Furthermore, the parent device 28 and the child device 3
Instead of or in addition to realizing the various functions provided in 2 by dedicated electronic circuits, it is also possible to realize the functions by software using a one-chip microcomputer. The shape of the case 70 on the slave unit 32 side can be arbitrarily changed, such as a pen shape, a card shape, a pendant shape, a key holder shape or a wristwatch shape. Further, not only the slave unit may be configured alone as a display means for a mobile phone, but also a unit may be integrally formed with another functional component such as a game machine or a clock.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an overall configuration of a display device according to the present invention. FIG. 2 is an enlarged sectional view taken along line 2-2 in FIG. FIG. 3 is an exploded perspective view showing an attached state of a base unit to the telephone. FIG. 4 is an electric circuit diagram schematically showing an electrical connection state between the telephone and the base unit. FIG. 5 is an electric circuit diagram showing an example of an electronic circuit on the slave unit side. DESCRIPTION OF SYMBOLS 10 Telephone 14 Body case 18 Battery compartment 20 Rechargeable battery 22 Battery pack 26 Cover 28 Base unit 30 Base unit side electronic circuit 32 Handset 36 Terminal block 38 Electrode terminal 40 Control unit 50 Partition wall 52 Outer wall 54 Storage Chamber 56 Socket 58 Input terminal 60 ID encoder 62 Transmitter 66 Switching circuit 68 Transmission antenna 72 Receiver 74 ID decoder 76 Vibrator 78 Remote unit side electronic circuit 80 Receiving antenna 82 Tuning circuit 84 High frequency amplifier circuit 86 Detection circuit 92 Light emitting element 94 Switching Circuit 96 Motor 98 Reset switch 100 Power supply circuit 102 Battery 104 Boost circuit 106 Power switch 108 Oscillation circuit 110 Automatic switch

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-46765 (JP, A) JP-A-8-149534 (JP, A) JP-A-9-18560 (JP, A) JP-A-9-96 107586 (JP, A) JP 41-19927 (JP, B1) (58) Fields surveyed (Int. Cl. ⁷ , DB name) H04Q ⁷ /00-7/38 H04B 1/06 H04B 7/24- 7/26

Claims (1)

(1) A master unit (28) provided on a portable telephone (10) and a slave unit provided apart from the master unit (28). constructed from the (32), said telephone (10), the first in conjunction with the predetermined detection operation
Of an output terminal to enable output signal, the master unit (28), together with removably attached to the telephone (10), of the telephone (10) side
Connectable to the output terminal, an input terminal of the signal, while enabling delivery of the second signal in conjunction with the input of the first signal sent from the telephone set (10) side in the radio conditions, the element (32) boosts the output voltage of the battery (102)
When the second signal output from the master unit (28) driven by the voltage increased by the circuit (104) is detected,
Der which enable the display operation corresponding to the second signal
Thus, the output terminal of the telephone (10) is connected to a battery housing a battery.
The main unit (28) is located in the pond room (18).
(18) is formed integrally with the lid (28) that opens and closes freely.
And the first telephone sent from the telephone set (10) to the base unit (28).
There are a plurality of types of signals transmitted from the master unit (28).
The second signal transmitted from the telephone (10) is
The child device (32) is specified by a code corresponding to the type of signal , and
Output the signal, and correspond to the third signal.
The battery (102) in the slave unit (32) and the boosting operation.
Road (104), a manual power switch (10
6) in conjunction with the energization by the power switch (106).
Automatically repeats the on / off operation by the booster circuit (1).
04) Automatic switch that intermittently energizes
(110), when receiving the second signal from the master unit (28),
Automatic switch (110) intermittently turns on
A display device for a mobile phone, wherein the display device is forcibly switched to a typical ON operation .