JPS62102634A - Automobile-use equipment provided with automobile telephone set - Google Patents

Abstract

PURPOSE:To attain the display not giving hindrance to other picture display by receiving the output from an automobile telephone set and a means generating other information to apply picture display, and applying an out-zone display in response to the output from a discriminating means. CONSTITUTION:A high frequency signal from an antenna 6 is demodulated by a frequency discrimination circuit 11 in a radio equipment 1 via a duplexer 7, a reception mixing circuit 9 and an intermediate frequency amplifier circuit 10 and demodulated by a frequency discriminating circuit 11, then a sound signal is led in a line 13. The circuit 10 leads a signal representing the reception electric field strength on the line 14 and supplies the result to a comparator circuit 15. When the reception electric field strength is less than the level set by a reference voltage generating circuit 16, the circuit 15 leads the out-zone signal to a line 17. The out-zone signal sets an out-zone code sending lag Fk to 1 to operate a timer and the out-zone display is displayed on a CRT 49. When the operating time of the timer elapses for a predetermine time, e.g., 10sec, the out-zone display is cleared and the timer is also cleared.

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD The present invention relates to an automotive device that includes a mobile telephone and is used while being mounted on an automobile.

BACKGROUND ART In a conventional car telephone, a handset connected by a visible line is equipped with a speaker, a microphone, and a dial number input key.

The handset also has an alpha lamp that lights up when the car is outside of the telephone coverage area.
When out of range, the lamp remains on at all times.

Problems to be Solved by the Invention In such prior art, the lamp remains lit at all times to display out-of-service areas, and when attempting to display such a display using, for example, a cathode ray tube, one problem occurs. ,
It can be an eyesore. Displays using cathode ray tubes are used, for example, to indicate the operating status of audio equipment such as radio receivers, and to display map information indicating the route of a car. It would also be desirable to display information regarding car telephones using such cathode ray tubes. In such a case, if the out-of-range display were to be constantly lit by a cathode ray tube as described above, it would interfere with the pond display.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic display system 11' that allows display on a display 12 such as a cathode ray tube to be easily viewed without any trouble.
: Prepare yourself for the story Iso! ! ! The second company provides equipment for IJJ11.

Means for Solving the Problems The present invention provides a self-defining system that performs #X telephone communication and generates a Σ outside signal indicating that the area is outside the area where telephone communication is possible.
'JJ car phone Iso, a means for generating information other than the automatic rrL telephone, a means for determining that an out-of-service area display should be made, a car phone, and a means for generating information other than the car phone. and displays an image, and the out-of-service display of this information includes display means that is performed in response to the output from the tIi disconnection means! According to the present invention, the display means for displaying an image,
It is possible to display car phone information and other information, and the out-of-service area display is displayed only when the judgment means determines that such an out-of-range display should be performed, so that other information cannot be displayed. It becomes possible to perform a display that does not interfere with image display and is not an eyesore.

Therefore, it is preferable from the viewpoint of safe driving of automobiles.

Embodiment FIG. 1 is a block diagram of an embodiment of the present invention. This automotive device includes a radio 1, a telephone control circuit 2, a display control circuit 3, screen keys 4, and a keyboard 5. In the radio 8!1, a high frequency signal from an antenna 6 is given to a reception mixing circuit 9 for a super-hetero gain system in a reception circuit 8 via a transmission and reception branching filter 7. The intermediate frequency output from the mixing circuit 9 is amplified in an intermediate frequency amplification circuit 10, reheated in a frequency discrimination circuit 11, and an audio signal is led out to a line 13 from a bandpass filter and integration circuit 12. Intermediate frequency amplification circuit 10 derives a signal representing the received electric field strength of the telephone on line 14 and supplies it to comparator circuit 15 . A reference voltage from a reference voltage generation circuit 16 is applied to the comparison circuit 15 . The comparison circuit 15 indicates when the received electric field strength derived to the line 14 is less than the level set by the reference voltage generation circuit 16, and therefore Si telephone communication cannot be performed, that is, the area is out of range. The supination signal is led out on line 17. Line 13.1
7 is sent to the control circuit 18.

The transmitting circuit 19 modulates a high frequency signal in a modulator 20 using the audio signal from the control circuit 18 , applies the modulated signal from a transmitting mixing circuit 21 to a power amplifying circuit 22 , and guides it from the duplexer 7 to the antenna 6 . The output from the local oscillation circuit 23 is given to the reception mixing circuit 9 and the transmission mixing circuit 21, respectively.

In the telephone control circuit 2 there is provided a control circuit 24 implemented by a 4-bit microprocessor or the like. The microphone 25, which is the transmitter of the automatic IIL telephone, is fixed, for example, behind the steering wheel of the driver's seat. A receiver 26, which is a speaker, is embedded in the headrest of the driver's seat. The audio signal from the microphone 25 is amplified by the amplifier circuit 271 and is further provided to the amplifier circuit 28 . The control circuit 24 controls the operation of the amplifier circuit 28 via the transmission control circuit 29 .

A voice signal for outgoing calls is derived from the amplifier circuit 28 to the line 30, and the control circuit 18 in the wireless 8!1 described above
is applied to the transmitting circuit 19 from

The audio signal from the line 13 in the non-#a iso 1 is sent from the control circuit 18 to the amplifier circuit 32 via the line 31, and from the volume switching circuit 33 to the speaker 26 via the amplifier circuit 34, where it is turned into sound. Ru. Volume switching circuit 3
3 is controlled by a control circuit 24. The control circuit 24 is connected to an oscillation circuit 35, a reset circuit 36 for performing an initial operation when the power is turned on, a dial lock switch 37, and a volume changeover switch 38.

A clock signal is applied from the control circuit 18 of the radio 1 to the control circuit 24 via a line 39, and the control circuit 24
The dialing signal from 4 is sent from line 40 to control circuit 18.
and sent out from the transmitting circuit 19. This telephone control circuit 2 is equipped with a power supply 41 and connected to the radio 1 by a line 42, and a ground line 43 is connected to the radio 1.

The control circuit 24 activates the six confirmation tone control circuits when a telephone call is received from the receivable vfS of the non-#X Iso 1 via the control circuit 18, and activates the confirmation tone generation circuit 7.
0 generates a confirmation sound signal, which causes the amplifier circuit 71 to drive the speaker 72 to generate sound from the speaker 72, thereby achieving the function of the ring.

In the display ff1II control circuit 3, an input interface 7 eighth 45 and an output ink 7 eighth 4G are connected to a control circuit 44 realized by a microprocessor or the like, and serial data is transmitted via lines 47 and 48. It is connected to the control circuit 24 of the telephone control circuit 2 via the telephone control circuit 2 . The output interface 7/8 46 has a cathode ray tube 4 for displaying images.
9 is connected, and a screen key 4 is provided on the curved surface of the display area. Also connected to the control circuit 44 are a random access memory 50 and a read-only memory 51 that stores video signals for display fixed patterns.

The input interface 7/8 45 also includes a dual information key 52 provided on the keyboard 5, an audio key 53 for a sound device, and a map key 5 for displaying map information.
4 and electric 2 key 5 for telephone communication by car phone.
5 is connected. A signal from the audio equipment 56 mounted on the automobile is applied to the input interface 7A or 45 via an analog/analogue converter 57. In addition, the signal from the vehicle information generation stage 58 is sent to an analog/analogue converter 57.
The signal is applied to the input interface 7/8 45 via the input interface 7/8.

The vehicle information generating means 58 generates a signal representing, for example, the operating state of the internal combustion engine, and other operating states.

FIG. 2 is a front view of the display screen of the cathode ray tube 49 as viewed through the screen key 4, and shows the state during car phone communication. The display screen of this negative 1i tube t9 is indicated by reference numeral 59''C in FIG. 2.The screen keys 4 are
A pair of transparent and flexible sheet bodies have transparent contacts arranged at a distance from each other on opposing surfaces, and when the contacts are pressed by manual operation, the mutual contacts become electrically conductive. Such screen keys 4 are realized by so-called sheet switches. In FIG. 2, the screen keys 4 are used to select numbers 0, 1, 2, . ..., numeric keypad 6 which is 9
0, function keys 61 and 62, a cancel key 63 for canceling input information, and a call key 64 for making a telephone call.

This shadow [#i The display screen 59 of the tube 49 has a numeric keypad 60
The dial number 67 inputted by is displayed, and information regarding the telephone in that pond is also displayed.

FIG. 3 is a front view Z of the screen 59 of the negative ray tube 49 viewed through the screen key 4 when a radio broadcast is being received by the audio ¥1 device 5G. In this state, the screen keys 4 include a switch 65 for raising or lowering the reception frequency, a switch 66 for scanning the reception frequency, and a channel error for selectively receiving the reception frequency of a predetermined radio broadcast. and a channel selection switch 67 for channel 7.

The five display screens display, for example, channel numbers, reception frequencies, electric field strengths for each channel, and types of modulated broadcasting.

Referring to FIG. 4, the operation of the telephone control circuit 2 will be explained. Moving from step s1 to step s2, the inside code sending 7 lag Fi and the out-of-service hood sending 7 lag Fk are set as logical roJ. The area code is wireless 8!1
The control circuit 18 of the telephone control circuit 18 sends a signal to the line 65 of the telephone control circuit 2 when it is in a region where telephone communication can be performed by the output of the comparison circuit 15 via the line 27, and is called an out-of-service code. This is a signal code that indicates when the electric field strength is too weak to carry out telephone communications. In step 53, it is determined that the telephone key 55 of the keyboard 5 has been operated and a corresponding code signal has been applied from the display control circuit 3 to the control circuit 24 via the line 48. When the telephone key 55 is operated, the process moves to step s4, where it is determined whether or not the car is out of service area. If so, the process moves to step S5, where it is determined whether the out-of-service code sending 7 lag Fk is logical "1". to decide. If the out-of-service code sending 7 lag Fk is logical "1", the process moves to step S7;
It is determined whether the telephone key 55 is suppressed again to end the telephone communication, and if so, the process returns to step S2.
If the pressing operation has not been performed again, the process moves to step S4 to continue telephone communication.

In step s5, out-of-service code sending 7 lag Fk
If it is not logic "1", go to step S6 and set the out-of-range code sending flag Fk to logic "1", and at this time set the in-range code sending 7 lag F1 to "0".

If it is determined in step S4 that it is not out of service area, in step S8, out of service food delivery 7 lag Fk
It is determined whether f1 is logical "1", and if not, the process moves to step S7. If in step S8 -1, the out-of-service code sending 7 lag Fk is logical "1", then in step S9 the in-service code sending 7 lag F1 is set to logic Elr.
l J, and the out-of-service code sending 7 lag Fk is set to logic "0".

In the present car telephone service, when there is a telephone call from the other party, by repeatedly pressing the telephone key 55 on the keyboard 5, the telephone communication becomes possible.

In order to make a telephone call by calling the other party from the car telephone in this case, first press the telephone key 55 on the keyboard 5, and the screen of the cathode ray tube 49 will be displayed as indicated by reference numeral 59 in FIG. As expected. Therefore, screen key 4
The telephone number of the other party is entered using the numeric keypad 60 at . This telephone number of the other party is displayed on the screen 59 as indicated by reference numeral 67. After inputting the dial number of the other party's telephone, the call key 64 is pressed while the dial number is displayed as indicated by reference numeral 67.

In order to call the other party's telephone, the control circuit 2
A dialing signal is derived from line 42 from 4, and a call is made by the action of transmitting circuit 19. By lifting the telephone receiver of the other party, telephone communication becomes possible. Therefore, a telephone conversation may be made using the microphone 25 and the upper speaker 2G.

To cancel such a telephone conversation state, the telephone key 55 is operated again as described above.

The operation of the display control circuit 3 will be explained with reference to FIG.

Moving from step 111 to step n2, the cathode MA tube 4
Clear the memory Si1 that stores the states of the five screens of No.9. There are memos on the five screens of the cathode ray tube 49.
1 store contents are displayed. The fixed patterns of each image displayed by the four cathode ray tubes are stored in the read-only memory 51 and incremented by one. For example, on the screen 59 shown in FIG. 2, fixed patterns such as a numeric keypad 60, function keys 61, 62, cancel key 63, call key 64, etc. have been stored in the read-only memory 51. Entered dial number 65
is changed by the action of the processing circuit 44. Such fixed patterns and portions such as the dial number 65 that are changed are stored in the memory M1, and their contents are displayed as described above.

In step n3, 7 puffer fish FT is cleared.

The flag FT has a function for tlI disconnecting whether the telephone is in a telephone conversation state using a car telephone bill, and if it is in a telephone conversation state, the 7? FT is set to logic "1".

In step n4, it is determined whether the flag FT is logical "1", and if the call is not in progress, the process moves to step 115, where it is determined whether the keys 52 to 55 of the keyboard 5 have been operated. When one of the keys 52 to 55 on the keyboard 5 is operated, the process moves to step 116, where it is determined whether the telephone key 55 has been operated, and if so, the 7-lag FT is set to logic "1" at step 117.

In step n8, the contents of the memory M1 storing the current screen state are transferred to the memory M2 storing the previous screen state. In step n9, the phone screen hood stored in the read-only memory 51 is transferred to the memory M1, and step nl is thereby performed.

Then, a telephone screen as shown in FIG. 2 is displayed by the cathode ray tube 49. In step nil, phone key 5
A signal indicating that 5 has been operated is given to the telephone production control circuit 2, thereby activating the telephone control circuit 2.

When it is determined in step n6 that the telephone key 55 has not been operated, it is determined in step n12 whether the audio key 53 has been operated or not! Ii is done. When the audio key 53 is operated, step n
13, the contents of the memo U M 1 storing the current screen state are transferred to the memory M2 storing the previous screen state. At step n14, the audio screen code D2, which is a fixed pattern shown in FIG. 3 and stored in the read-only memory 51, is transferred to the memory M1. In step n15, the fixed pattern from the read-only memory 51 and the 4ff f such as the field strength receiving channel, modulation type, and receiving frequency are stored.
fl is displayed by the shade #l tube 49.

When it is determined in step n16 that the earth key 54 has been operated, in step n17,
The contents of the memory M1 that currently stores the screen state are transferred to the memory M2 that stores the previous screen state. At step n18, the map screen code D3 is read from the read-only memory 51 and transferred to the memory M1. In step n19, the map screen is changed to cathode ray 949.
Display by.

If it is determined in step n20 that the vehicle information key 52 has been operated, the process moves to step 1121 and the contents of the memory M1 are transferred to the memory M2.

At step 1122, vehicle information screen code D4 is read from read-only memory 51 and transmitted to memory M1. In step n23, the vehicle information screen read from the read-only memory 51 and information that changes depending on the running condition of the vehicle are displayed by the cathode ray W49.

In step ++4, if the 7-lag FT is logic rlJ and therefore the telephone call state is interrupted by ↑1, the process moves to step n24, where the serial code is sent from the telephone control circuit 2 to the display control circuit 3 via line 47. It is determined whether data has been input, and if so, it is determined in step n25 whether the timer is operating. If the timer is not operating, the process moves to step n26, where it is determined whether the out-of-range hood delivery 7 lag Fk is logical "1". When the electric field strength is large and therefore the device is within the service area, it is determined in step +128 whether the in-service code sending 7 lag Fi is logical r]J, and if so, the out-of-service display is erased in step +121. When it is +q* that the out-of-service code sending 7 lag Fk is logical rlJ at step n26, an out-of-service area is displayed in step 1)27 as shown by reference numeral 68 in FIG.

In step n30 after step 129, it is determined whether one of the keys 52 to 55 on the keyboard 5 has been operated. Check if the °-data has been input! be lied to. If so, the process moves to step n28, where it is determined whether the timer is in operation. If the timer is not running, step n39
In this case, the out-of-service code sending 7 lag Fk is
If it is not out of range, and if Shinawa is also Ishiuchi, telephone communication continues.

If it is determined in step 1139 that the within-range code sending 7 lag Fk is logic "1", the process moves to step n40, where the timer starts working. step n41
In this case, as shown by reference numeral 68 in FIG. 2, an out-of-service area display is performed. In step n42, whether the timer operation time has elapsed for a predetermined time, for example 10 seconds, is 1! rI is disconnected. If so, the process moves to step n43, the outside display 68 is cleared, and the timer is cleared in step n45.

When it is determined in step 1131 that the telephone key 55 has been operated, the process moves to step 1132, where the out-of-service area display 68 is cleared, and in step n33, the 7-lag FT is set to logic "0". In step 1134, the contents of the memory M1 that currently stores the screen state are deleted from the phone screen hood D1. The contents of the memory M1 are transferred to the memory M1, and the fixed pattern and other information such as the changing dial number 67, which are the contents of the memory M1, are displayed by the cathode ray tube 49. If the telephone key 55 is not pressed in step n31, step n1
Move on to 2.

When making a call in this way, if it is determined in step n26 that you are out of range, then step n27
At this time, the out-of-service display 58 is kept displayed for a period of, for example, 108' set by a timer, and then the out-of-service display 68 is cleared. Also, in the telephone communication state, when the car moves from the pronation area to the out-of-service area and it becomes impossible to continue the phone communication, if this is determined in step n2G, the out-of-service area display 68 is displayed by 1 screen in step 1127. (as described above), the out-of-range display 68 continues for 10 seconds. Therefore, the user of JJR can understand that the reason why Ti language communication cannot be performed is because the vehicle is out of service area. Such an out-of-service area display 68 lasts, for example, about 10 seconds. Therefore, such an out-of-range display 68 does not always occur while the car is outside the vehicle, but only when the telephone key 55 is operated and for only, for example, 10 seconds. Since the out-of-service area display 68 is displayed, it does not become an eyesore and the display becomes easy to see.

In the example described above, the cathode, 1ifr! Numeric keys 60 are arranged on five relatively wide screens of 49, and therefore, by operating such numeric keys 60, it becomes easy to input a dial number. This compares to conventional car telephones, where you have to hold the handset F in one hand while inputting a dial number using the relatively small numeric keypad provided on the handset with the other hand. It is extremely easy to operate and allows you to input dial numbers with one hand. Therefore, repeatability is improved and safe driving becomes possible. Additionally, the microphone 25 is fixed behind the sparing wheel, and the speaker 26 is embedded in the headrest, so the driver can
Unlike the prior art described above, there is no need to hold the handset, and driving can be continued using both hands, which again improves safe driving.

Effects As described above, according to the present invention, by means of determining that an out-of-service area display should be displayed based on the out-of-service area (ff number) indicating that the car is outside the area where telephone calls are not possible, for example, Since the phone key is pressed and the out-of-service area display can be displayed for a predetermined time, such out-of-service area display does not become an eyesore, and the vehicle passenger can easily see the display.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. A front view showing the audio cord seen through the key 4;
FIG. 4 is a diagram 70- for explaining the operation of the telephone control circuit 2.
FIG. 5 is a flowchart for explaining the operation of the water control circuit 3. DESCRIPTION OF SYMBOLS 1...Radio device, 2...Telephone control circuit, 3...Display control circuit, 4...Screen key, 8...Receiving circuit, 9...
・Reception mixing circuit, 10... intermediate frequency amplification circuit, 1
5... Comparison circuit, 16... Reference voltage generation circuit, 18
, 24. =14...Control circuit, 25...Microphone, 26...Speaker, 49...Cathode M tube, 55...
・Telephone keys, 56...Audio equipment, 58...Information generating means, 59...Screen, 60...Numeric keypad, 68...
・Out-of-service area display agent Patent attorney Number of strokes Keiichi Part 2 Figure 3

Claims (1)

[Scope of Claims] A car phone that performs wireless telephone communication and generates an out-of-service signal indicating that it is outside the area where telephone communication is possible, means for generating information other than the car phone, and a method for displaying an out-of-service area. and a means for generating information other than the automobile telephone, and displays an image, and among the displays of this information, an out-of-service area indication is based on the output from the determining means. 1. An automobile device comprising a car telephone, characterized in that it includes a display means for responding.