JP2003244295A - Portable telephone system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a foldable portable telephone system for improving a failure caused by performing connection of an upper case body to a lower case body by an electric signal at an upper/lower connecting part between the upper case body and the lower case body. <P>SOLUTION: In this portable telephone system configured by openably/ closeably connecting the upper case body to the lower case body by a hinge part, an upper and lower connecting part for connecting a display part 9A arranged in the upper case body to a control part 5 arranged in the lower case body is configured of an optical fiber part 22 for signal transmission, and a light transmitting part 21 is disposed between a control part 5 and an optical fiber part 22 for signal transmission so that an electric signal from the control part 5 can be converted into an optical signal, and transmitted to one edge of the optical fiber part 22 for signal transmission, and a light receiving part 23 is disposed between the other edge of the optical fiber part 22 for signal transmission and the display part 9A so that an optical signal from the optical fiber part 22 for signal transmission can be converted into the electric signal, and transferred to the display part 9A. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone device, and more particularly, to an openable and closable connection of an upper casing having a display portion and a lower casing incorporating other functional portions with a hinge portion. And a foldable mobile phone device.

[0002]

2. Description of the Related Art In recent years, foldable portable telephone devices have come to be widely used for convenience of use and carrying and other reasons. In the foldable mobile phone device, due to its form, the functional parts are arranged in an upper case and a lower case in a distributed manner.

FIG. 4 is a block diagram showing an example of the electrical configuration of a conventional foldable portable telephone device. As shown in FIG. 4, the mobile phone device 100 of this conventional example has an antenna 1
A wireless unit 2, an analog baseband unit 3, a digital baseband unit 4, a control unit 5, a power supply unit 6, a battery 7, a key operation unit 8, a display unit 9, a microphone 10,
The speaker 11, the receiver 12, the display-connecting flexible printed board 13, and the backlight-connecting flexible printed board 14 are roughly configured.

The antenna 1 is connected to the radio unit 2 by the connection unit 1A and transmits / receives radio signals to / from a base station (not shown). The radio unit 2 performs mutual conversion between a radio signal of a predetermined modulation scheme transmitted / received to / from the antenna 1 and an analog baseband signal transmitted / received to / from the analog baseband unit 2. Analog baseband section 3
Performs mutual conversion between an analog baseband signal exchanged with the radio unit 2 and a digital baseband signal exchanged with the digital baseband unit 4 by an arbitrary coding method, and A transmission analog baseband signal is generated by a voice signal input from the microphone 10, and a voice signal output to a speaker 11 for transmitting a ringing tone and a receiver 12 for listening to the reception voice by the reception analog baseband signal. To generate.

The digital baseband unit 4 performs protocol processing between a digital baseband signal exchanged with the analog baseband unit 3 and various data exchanged with the control unit 5. Processing such as digital / analog (D / A) conversion is performed to mutually convert. The control unit 5 performs processing such as calling when a dial signal is input from the digital baseband unit 4 when receiving a call, and outputs a dial signal to the digital baseband unit 4 in response to a button operation on the key operation unit 8 when making a call. In addition, the operation of other various control buttons in the key operation unit 8 and the display information based on the received data are generated and output to the display unit 9. Further, according to the transmission / reception state, the wireless unit 2 and the analog baseband are provided. The operation of the unit 3 is controlled.

The power supply unit 6 is supplied with a direct current power source of the battery 7,
Power for operation is supplied to the wireless unit 2, the analog baseband unit 3, the digital baseband unit 4, and the key operation unit 8 and a light emitting unit for backlight (not shown) in the display unit 9 is provided.
To Liquid Crystal Display (LCD)
A power supply for lighting the backlight (not shown) is supplied. The display unit 9 includes a liquid crystal display with a backlight, and the control unit 5
By displaying the image data such as characters and various marks output from the printer and still images and moving images in a visible manner, and supplying the light from the light emitting portion for the backlight to the light guide plate for the backlight (not shown), a liquid crystal display Illuminate from the back. The display-connecting flexible printed board 13 connects the control unit 5 and the liquid crystal display to transmit image data to the liquid crystal display. The backlight connection flexible printed board 14 connects the power supply unit 6 and the backlight emission unit of the liquid crystal display, and supplies power to the backlight emission unit.

FIG. 5 shows an external structure of a conventional foldable portable telephone device. Conventional mobile phone device 1
As shown in FIG. 5, 00 is roughly configured by an upper housing 101, a lower housing 102, and a hinge portion 103 that connects the upper housing 101 and the lower housing 102 so as to be openable and closable. . The upper housing 101 is provided with a display unit 9 and a pull-out type antenna 1. On the surface of the lower housing 102, a dial button 8A for dial input and character input and other various control buttons 8B, a microphone 10 and a receiver 12 which form the key operation unit 8 are provided. There is. Further, a speaker 11 (not shown) is provided on the back surface of the lower housing 102, and the lower housing 1
Inside 02, a printed circuit board 15 (not shown) on which main functional parts of the mobile phone device are mounted is provided.

FIG. 6 exemplifies a connection structure of an upper casing and a lower casing in a conventional folding type portable telephone device. In the conventional foldable mobile phone device 100, as shown in FIG. 6, the display unit 9 provided in the upper casing 101 and the control unit 6 on the printed circuit board 15 provided in the lower casing 102 are different from each other. , The hinge portion 1 by the flexible printed board 13 for connecting the display, which forms the upper and lower connecting portions.
It is connected via the inside of 03. A flexible printed board 14 for backlight connection, which connects the light emitting section for backlight of the display (not shown) and the power supply section 6, and a connection section 1A for connecting the antenna 1 and the wireless section 2 are also similar to the vertical connection section. It is provided in.

[0009]

In the conventional folding type portable telephone device, as shown in FIG. 6, the upper and lower connecting portions are made of a flexible printed board, but when the upper and lower connecting portions are made of a flexible printed board. , There are various defects as follows.

(1) Radiation of an electric signal passing through the upper and lower connection portions reduces the reception sensitivity of communication of the mobile phone device. (2) The signal lines that form the upper and lower connection parts affect the antenna characteristics, and depending on the open / closed state of the upper housing and the lower housing,
Deterioration of antenna characteristics occurs. (3) When the signal lines forming the upper and lower connection parts are made of a flexible printed board, high-speed data transfer beyond a certain limit cannot be performed due to the influence of the signal line impedance. Therefore, in order to perform high-speed data transfer, it is necessary to increase the number of signal lines, but this complicates the configuration of the mobile phone device, increases cost, and decreases reliability.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to eliminate the above-mentioned problems by improving the configuration of the upper and lower connecting portions in the folding type portable telephone device. .

[0012]

In order to solve the above-mentioned problems, the invention according to claim 1 relates to a portable telephone device, and is a foldable structure in which an upper casing and a lower casing are connected by a hinge portion so as to be openable and closable. Type portable telephone device, in which an up-and-down connecting portion for connecting a display means provided in an upper housing and a control means for operating the display means provided in a lower housing is constituted by an optical fiber. It is characterized by having done.

The invention according to claim 2 relates to the portable telephone device according to claim 1, further comprising an optical transmission means between the control means and the optical fiber, wherein an electric signal from the control means is an optical signal. And transmits to one end of the optical fiber, and an optical receiving means is provided between the other end of the optical fiber and the display means to convert an optical signal from the optical fiber into an electric signal and display the electric signal. It is characterized in that it is transmitted to the means.

According to a third aspect of the present invention, there is provided a portable telephone device according to the second aspect, wherein the electric signal sent from the control means is image data.

According to a fourth aspect of the present invention, in the portable telephone device according to the second aspect, the electric signal sent from the control means comprises image data and voice data, which is converted by the optical receiving means. The image data in the electric signal is transmitted to the display means, and the audio data is transmitted to the receiver provided in the upper casing.

The invention according to claim 5 relates to the portable telephone device according to claim 4, wherein the voice data is a digital signal, and the digital voice signal converted by the optical receiving means is converted into a digital / analog converting means. It is characterized in that the signal is converted into an analog signal via and transmitted to the receiver.

Further, the invention according to claim 6 relates to the portable telephone device according to any one of claims 1 to 5, wherein the display means is provided with a light emitting means, and the light emitting means is provided with a flexible printed board from a power source means. It is characterized in that the light emitted from the power supply is supplied to the liquid crystal display of the display means as a backlight.

Further, the invention according to claim 7 relates to the portable telephone device according to any one of claims 1 to 5, wherein the lower housing is provided with a light emitting means, and the light emitting means is powered by a power source means. The light that is supplied and emitted is supplied as a backlight to the liquid crystal display of the display means through an optical fiber.

An eighth aspect of the present invention relates to the portable telephone device according to the sixth or seventh aspect, wherein the light emitting means is a light emitting diode.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment FIG. 1 is a block diagram showing an electrical configuration of a mobile phone device according to a first embodiment of the present invention. As shown in FIG. 1, the mobile phone device 100A of this example includes an antenna 1, a radio unit 2, an analog baseband unit 3, a digital baseband unit 4, a control unit 5, a power supply unit 6, and a battery. 7 and
Key operation unit 8, display unit 9A, microphone 10, speaker 11, receiver 12, flexible printed board 14 for backlight connection, optical transmitter 21, optical fiber unit 22 for signal transmission, and optical reception It is configured roughly from the section 23.

Among these, the antenna 1, the radio section 2, the analog baseband section 3, the digital baseband section 4, the control section 5, the power supply section 6, the battery 7, the key operation section 8, the microphone 10, the speaker 11, and the receiver 12 Since the flexible printed board 14 for backlight connection is the same as that of the conventional example shown in FIG. 4, detailed description thereof will be omitted below. Mobile phone device 1 of this example
The external configuration of 00A is the same as that of the conventional example shown in FIG.

The display unit 9A has the same function as the display unit 9 of the conventional example, except that the display unit 9A receives image data from the receiving unit 23. Optical transmitter 21
Converts an electric signal of image data, which is a digital signal sent from the control unit 5, into an optical signal. The signal transmission optical fiber unit 22 transmits the optical signal of the optical transmission unit 21 to the optical reception unit 23. The optical receiver 23 converts the optical signal transmitted via the signal transmission optical fiber unit 22 into image data of an electric signal and supplies the image data to the display unit 9A.

In the portable telephone device 100A of this example, the image data sent from the controller 5 is the optical transmitter 2
1, the optical signal is converted into an optical signal corresponding to the image data, and is transmitted to the optical receiving unit 23 via the signal transmitting optical fiber unit 22. The light receiving unit 23 demodulates the image data by converting the received optical signal into an electric signal and supplies the image data to the display unit 9A. Therefore, in the display unit 9A, as in the case of the conventional example shown in FIG. Then, the image is displayed.

As described above, in the portable telephone device of this example,
Instead of the flexible printed board 13 for connecting the display in the upper and lower connecting portions of the conventional example, the light transmitting portion 21, the signal transmitting optical fiber portion 22 and the light receiving portion 23 are provided. The defect in the example has been resolved. The effects of this embodiment will be specifically described below.

(1) Since the upper and lower connecting portions are composed of optical fibers, electric signals cannot pass through these portions, and therefore the radiation of the electric signals passing through the upper and lower connecting portions lowers the reception sensitivity of communication of the mobile phone device. Can be prevented. (2) Since the upper and lower connecting portions are made of optical fibers, this portion is not electrically connected, and therefore it is possible to prevent deterioration of the antenna characteristics due to the open / close state of the upper and lower casings. (3) Since the upper and lower connection parts are composed of optical fibers, much higher speed data transfer becomes possible compared to the conventional example in which electric signals are transmitted to the flexible printed board. Therefore,
Unlike the conventional example, since it is not necessary to increase the number of signal lines to perform high-speed data transfer, the structure of the mobile phone device is not complicated, and the cost can be reduced and the reliability can be improved. Become.

Second Embodiment FIG. 2 is a block diagram showing the electrical construction of a mobile telephone device according to a second embodiment of the present invention, and FIG. 3 is a diagram showing the external construction of the mobile telephone device of this embodiment. Is. As shown in FIG. 2, the mobile phone device 100B of this example has an antenna 1, a radio unit 2, an analog baseband unit 3, a digital baseband unit 4, a control unit 5, a power supply unit 6, and a battery. 7, a key operation unit 8, a display unit 9B, a microphone 10, a speaker 11, a receiver 12A, an optical transmission unit 21A, a signal transmission optical fiber unit 22A, an optical reception unit 23A, digital / analog Conversion (D / A) unit 24, light emitting diode (LED) 25, and backlight transmission optical fiber 2
6 and 6 are roughly configured.

Among these, the antenna 1, the radio unit 2, the analog baseband unit 3, the digital baseband unit 4, the control unit 5, the power supply unit 6, the battery 7, the key operation unit 8, the microphone 10, and the speaker 11 are shown in FIG. Since it is the same as the case of the first embodiment shown in FIG. 1, detailed description thereof will be omitted below. As shown in FIG. 3, the appearance of the mobile phone device of this example is similar to that of the conventional mobile phone device shown in FIG. The difference is that a receiver 12A is provided at the upper end of the housing 101, for example.

The display section 9B has the same function as the display section 9A of the first embodiment, but the light generated by the LED 25 provided in the lower housing 102 is passed through the backlight transmission optical fiber 26. The difference is that it is introduced as a backlight into a light guide plate for a backlight of a liquid crystal display. The receiver 12A is provided in the upper housing 101, and
A voice signal is supplied from the / A section 24. The optical transmitter 21A converts the electric signals of the image data and the audio data, which are digital signals sent from the controller 5, into optical signals. Optical fiber part 22A for signal transmission
Transmits an optical signal including image data and audio data sent from the transmitter 21A to the optical receiver 23A.

The optical receiving section 23A converts the optical signal of the image data output from the optical fiber section 22A into an electric signal and supplies it to the display section 9B, and also converts the optical signal of the audio data into an electric signal. It is supplied to the D / A unit 24. D / A
The unit 24 converts the audio data, which is a digital signal output from the optical receiving unit 23A, into an audio signal that is an analog signal, and supplies the audio signal to the receiver 12A. LED25
Is emitted by the liquid crystal display backlight lighting power source from the power source unit 6. Backlight transmission optical fiber 26
Introduces the light generated by the LED 25 into the backlight light guide plate of the liquid crystal display.

In the portable telephone device 100B of this example, the image data sent from the controller 5 is the optical transmitter 2
In 1A, an optical signal corresponding to the image data is converted, and the optical signal is transmitted through the signal transmitting optical fiber section 22A.
Is transmitted to A. The light receiving unit 23A demodulates the image data by converting the received optical signal into an electric signal and supplies the image data to the display unit 9B. Therefore, in the display unit 9B, the conventional example shown in FIG. Image display is performed as in the case of the first embodiment shown.

Further, in the portable telephone device 100B of this example, the audio data sent from the control section 5 is converted into an optical signal corresponding to the audio data in the optical transmission section 21A, and the optical fiber section for signal transmission is used. It is transmitted to the optical receiver 23A via 22A. The optical receiver 23A converts the received optical signal into an electric signal to supply a digital signal obtained by demodulating the audio data to the D / A section 24. D /
In the A section 24, voice data composed of digital signals are
Since it is converted into an analog signal and supplied to the receiver 12A provided in the upper casing 101, the received voice is received.
It can be heard from one side.

Further, in the portable telephone device 100B of this example, the LED 25 is caused to emit light by the power source for lighting the liquid crystal display backlight from the power source section 6, and the light is transmitted through the optical fiber 26 for backlight transmission to the display section. Since it is introduced into the backlight light guide plate of the liquid crystal display in FIG. 9B, the backlight of the liquid crystal display is the same as in the conventional example shown in FIG. 4 and the first embodiment shown in FIG. Can be illuminated.

As described above, according to the portable telephone device of this example, as in the case of the first embodiment, in addition to transmitting the image data through the signal transmitting optical fiber portion 22A, the voice data is also transmitted. The light is transmitted to the upper casing 101 via the optical fiber section 22A for display, and the backlight of the liquid crystal display is also displayed on the display section 9B via the optical fiber 26 for transmitting backlight.
Since the transmission is performed in accordance with the first embodiment, it is possible to more effectively eliminate the above-mentioned problems of the conventional example as compared with the case of the first embodiment.

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific structure is not limited to this embodiment, and there are design changes and the like without departing from the scope of the invention. However, it is included in this invention. For example, the antenna 1 may be provided not only in the upper housing 101 but also in the lower housing 102. In this case, since the antenna 1 and the wireless unit 2 are connected via the hinge unit 103. The connecting portion 1A is unnecessary.

[0035]

As described above, according to the portable telephone device of the present invention, in the folding portable telephone device, the upper and lower connecting portions connecting the upper casing and the lower casing are made of optical fibers. It is possible to prevent the reception sensitivity of communication of the mobile phone device from being lowered due to the radiation of the electric signal passing through the upper and lower connecting portions, because the electric signal does not pass through this portion. Further, since the upper and lower connecting portions are made of the optical fiber, this portion is not electrically connected, so that it is possible to prevent the deterioration of the antenna characteristics due to the open / close state of the upper and lower casings. Furthermore, since the upper and lower connection parts are made of optical fiber, much faster data transfer is possible compared to the case of the conventional example in which electric signals are transmitted by the flexible printed board, and therefore high-speed data transfer is performed. In addition, since it is not necessary to increase the number of signal lines, the configuration of the mobile phone device is not complicated, the cost is reduced, and the reliability is improved.

[Brief description of drawings]

FIG. 1 is a block diagram showing an electrical configuration of a mobile phone device according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing an electrical configuration of a mobile phone device according to a second embodiment of the present invention.

FIG. 3 is a diagram showing an external configuration of a mobile phone device of the embodiment.

FIG. 4 is a block diagram showing an electrical configuration example of a conventional foldable mobile phone device.

FIG. 5 is a diagram showing an external configuration of a conventional foldable mobile phone device.

FIG. 6 is a diagram exemplifying a connection structure between an upper housing and a lower housing in a conventional foldable mobile phone device.

[Explanation of symbols]

1 antenna 2 radio section 3 analog baseband 4 Digital baseband section 5 Control unit (control means) 6 Power supply unit (power supply means) 7 batteries 8 key operation part 9, 9A, 9B display unit (display means) 10 microphone 11 speakers 12,12A receiver 14 Flexible printed board for backlight connection 21,21A Optical transmitter (optical transmitter) 22,22A optical fiber for signal transmission 23, 23A Optical receiver (optical receiver) 24 D / A section (digital / analog conversion means) 25 LED (light emitting means) 26 Optical fiber for backlight transmission

Claims (8)

[Claims] 1. A foldable mobile phone device in which an upper housing and a lower housing are openably and closably coupled by a hinge portion, wherein a display means provided on the upper housing and a lower housing are provided. A mobile phone device characterized in that an upper and lower connection portion for connecting with a control means for operating the provided display means is constituted by an optical fiber. 2. An optical transmission unit is provided between the control unit and the optical fiber to convert an electric signal from the control unit into an optical signal and send the optical signal to one end of the optical fiber, and the other end of the optical fiber. 2. The mobile phone device according to claim 1, further comprising an optical receiving unit between the display unit and the display unit for converting an optical signal from the optical fiber into an electric signal and transmitting the electric signal to the display unit. 3. The mobile phone device according to claim 2, wherein the electric signal sent from the control means is image data. 4. The electric signal sent from the control means is composed of image data and audio data, and the image data in the electric signal converted by the light receiving means is transmitted to the display means and the audio data is transmitted. The mobile phone device according to claim 2, wherein the mobile phone device transmits to a receiver provided in the upper housing. 5. The voice data comprises a digital signal, and the digital voice signal converted by the optical receiving means is converted into an analog signal via a digital / analog converting means and transmitted to the receiver. The mobile phone device according to claim 4. 6. The display means includes a light emitting means, and the light emitting means is supplied with power from a power supply means through a flexible printed board to supply light to the liquid crystal display of the display means as a backlight. 6. The mobile phone device according to claim 1, wherein the mobile phone device is a mobile phone device. 7. The lower housing is provided with a light emitting means, and the light emitted from the light emitting means by supplying power from the power supply means is supplied as a backlight to the liquid crystal display of the display means through an optical fiber. The mobile phone device according to claim 1, wherein the mobile phone device is a mobile phone device. 8. The mobile phone device according to claim 6, wherein the light emitting means comprises a light emitting diode.