JPH11266546A - Electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic device, which is capable of reducing the power consumption of a system as a whole and improving the performance and function of the system by integrating the functions required for the system into integrated circuits which are made to match with each characteristic and providing a power supply system adaptive to each integrated circuit. SOLUTION: A transmission and reception circuit 2 which is principally a high-frequency circuit is constituted of a transmission/reception change-over switch 10, and a power amplifier 11 is integrated into a single integrated circuit. Then an RF signal processing circuit 3, which is principally an analog circuit constituted of a low-noise amplifier 12, a reception mixer 13, a transmission mixer 14, a voltage-controlled transmitter 16, a frequency synthesizer 15, etc., is integrated into another integrated circuit. In addition, a base-band signal processing circuit 4, which is principally a digital circuit composed of a demodulator 17, a modulator 18, a sound signal processing circuit 19, a CPU 21 for control, a memory 22, an image signal processing circuit 20, etc., is integrated into a third integrated circuit, so as to optimize the voltage supplied from a voltage control circuit 5 in accordance with the characteristics of each circuit.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device,
In particular, the present invention relates to a system structure of a portable device in which a high-frequency circuit, an analog circuit, and a digital circuit are mixed and supplied with power from power supply means such as a battery.

[0002]

2. Description of the Related Art In recent years, portable telephones and simplified portable telephones (PH
Electronic devices for mobile communication such as S) are rapidly becoming popular.

FIG. 15 is a circuit block diagram of such a conventional electronic device, and particularly shows a system configuration of a simplified portable telephone.

As shown in the figure, a speaker 7 for talking and a microphone 9 are connected to an audio signal processing circuit 19 of the baseband signal processing circuit 4. The audio signal processing circuit 19 is connected to the reception mixer 13 through the demodulator 17.
Is connected to the transmission mixer 14 through the modulator 18.
The baseband signal processing circuit 4 includes a control CPU 21 and a memory 22, and controls the entire system.

On the other hand, a low-noise amplifier 12 for reception and a power amplifier 11 for transmission are connected to the antenna 1 via a transmission / reception switch 10. Then, the low noise amplifier 12 is connected to the reception mixer 13 and the power amplifier 11
Is connected to the transmission mixer 14.

[0006] A voltage control oscillator 16 is connected to the control CPU 21 of the baseband signal processing circuit 4 to control the frequency synthesizer 15. The signal from the frequency synthesizer 15 is provided to the reception mixer 13 and the transmission mixer 14.

Power is supplied to the entire system by a battery 6.

Next, the operation of the above configuration will be described.

First, in a receiving operation during a call, a 1.9 GHz band received signal input from the antenna 1 is amplified by the low noise amplifier 12 through the transmission / reception switch 10 and is received by the reception mixer 13. Several tens of Hz to several hundred
The frequency is converted to a kHz band signal. The baseband signal is demodulated and detected by the demodulator 17 of the baseband signal processing circuit 4, subjected to audio signal processing by the audio signal processing circuit 19, and output from the speaker 7 as audio.

On the other hand, in a transmission operation during a call, an input voice from the microphone 9 is transmitted to a voice signal processing circuit 19.
, And is orthogonally modulated into a baseband signal by the modulator 18. This baseband signal is converted into a 1.9 GHz band transmission frequency by the transmission mixer 14,
The transmission signal is amplified to an average of 10 mW by the power amplifier 11 and transmitted from the antenna 1 via the transmission / reception switch 10.

[0011]

As described above, the conventional electronic device includes a block for handling a high-frequency power signal close to about 2 GHz, such as a transmission / reception switch 10 and a power amplifier 11, a low-noise amplifier 12, and a reception mixer 13. , A block that handles relatively low-power high-frequency signals such as a transmission mixer 14 and a frequency synthesizer 15, an analog block such as a voltage-controlled oscillator 16, a digital signal such as a baseband signal processing circuit 4, and a voice such as a voice. And a block that handles signals of a relatively low frequency. In order to satisfy the function of each block, gallium arsenide integrated circuits are applied to the transmission / reception changeover switch 10 and the power amplifier 11, respectively. On the other hand, a BiCMOS integrated circuit which is a mixed circuit of a bipolar element and a MOS element is used for each of the low noise amplifier 12, the reception mixer 13, the transmission mixer 14, and the frequency synthesizer 15. Further, a bipolar integrated circuit is used for the voltage control transmitter 16, and a CMOS integrated circuit is used for the baseband signal processing circuit 4.

That is, in order to configure one communication system, it is necessary to use at least eight integrated circuit chips.

Therefore, the cost and the mounting area of the circuit board for configuring the communication system are inevitably increased. This is a major obstacle in configuring a portable device, and hinders cost reduction and reduction in size and weight.

In addition to the voice communication function, the mobile communication includes various functions such as an Internet connection function, a facsimile communication function, an electronic mail transmission / reception function, a still image processing function, a moving image processing function, and a voice recognition function. In order to realize these complicated functions, a high-speed processor having a processing capability of at least about 40 MIPS to about 100 MIPS is required. However, a high-speed processor generally consumes a large amount of power in order to realize a high-speed operation, which results in consuming the battery 6 that supplies power. That is, the operation time of the device driven by the battery is shortened, and the usability is deteriorated.

Generally, the power consumption of a digital integrated circuit such as a processor is proportional to the square of the power supply voltage. Therefore, it is very effective to lower the power supply voltage in order to reduce the power consumption. I have. Therefore, in order to extend the battery life of an electronic device equipped with a digital circuit for realizing various functions, it is necessary to reduce the power supply voltage.

However, on the other hand, in an analog integrated circuit such as the low noise amplifier 12, there is a situation that the power supply voltage cannot be lowered unnecessarily in order to secure a dynamic range. In the power amplifier 11, since the output power is determined, when the power supply voltage is reduced,
The current increases, and there is a concern that the resistance loss increases. Further, when the power supply voltage is reduced, the signal amplitude is also reduced.
There is also a problem that / N deteriorates.

That is, in the conventional electronic device, when the power supply voltage of the entire system is reduced in order to reduce power consumption,
Even if the power consumption of the digital integrated circuit can be reduced, the characteristics of the analog circuit are greatly deteriorated, and there is a problem that the required performance of the device cannot be satisfied.

As described above, in the conventional electronic device, since the functional blocks having various functions are formed of different integrated circuits, the number of integrated circuit chips increases, which leads to cost reduction and miniaturization. Not only is it difficult to reduce the weight, but also if various functions are to be improved without increasing the power consumption, the characteristics of analog circuits for realizing the functions of the original electronic device will deteriorate. There was a problem of inviting.

Even if the power consumption of the circuit is reduced in order to extend the battery life, in the case of a general rechargeable or disposable battery, the life will eventually expire and the use of the equipment will eventually take place as the battery continues to be used. If you can't do that,
It is often unavailable in an emergency, and is a serious problem in portable electronic devices. For this reason, further extension of the battery life is a major issue, but improvement of the battery itself is limited, and some measures are required.

The present invention solves the above-mentioned problems of the prior art, integrates the functions required for the system into integrated circuits adapted to the respective characteristics, and also provides a power supply suitable for each integrated circuit. An object of the present invention is to provide a highly usable electronic device by providing a supply system, realizing high functionality while reducing power consumption of the entire system, and extending the life of a battery.

[0021]

In order to achieve the above object, the present invention provides a high frequency circuit block mainly composed of a high frequency circuit, an analog circuit block mainly composed of an analog circuit, and a digital circuit mainly composed of a digital circuit. Digital circuit block, first voltage control means for generating a first voltage suitable for the high-frequency circuit block, and second voltage for generating a second voltage suitable for the first analog circuit block A control unit, a third voltage supply unit for generating a third voltage suitable for the digital circuit block, a first integrated circuit block in which the high-frequency circuit block is integrated, and the analog circuit block are integrated. A first integrated circuit including a second integrated circuit block and a third integrated circuit block in which the digital circuit block is integrated; It is to provide a location.

The present invention can have the following embodiments.

In the above first electronic device, the first electronic device
The second electronic device, wherein the voltage control means, the second voltage control means, and the third voltage control means are integrated in a fourth integrated circuit block.

In the above first electronic device, the first electronic device
Is integrated on the first integrated circuit block, the second voltage control unit is integrated on the second integrated circuit block, and the third voltage control unit is A third electronic device integrated on the third integrated circuit block.

In the above first electronic device, the first electronic device
The fourth electronic device, wherein the integrated circuit block and the second integrated circuit block are formed on the same semiconductor substrate.

In the fourth electronic device, a voltage control block integrating the function of the first voltage control means and the function of the second voltage control means is mounted on the semiconductor substrate. Electronic devices.

In the first electronic device, the second integrated circuit block and the third integrated circuit block may include:
A sixth electronic device formed over the same semiconductor substrate.

In the sixth electronic device, a voltage control block integrating the function of the second voltage control means and the function of the third voltage control means is mounted on the semiconductor substrate. Electronic devices.

In the first electronic device, the first integrated circuit block, the second integrated circuit block,
An eighth electronic device, wherein the third integrated circuit block is formed on the same semiconductor substrate.

In the eighth electronic device, the function of the first voltage control means and the second voltage control means may be provided on the semiconductor substrate.
A ninth electronic device, comprising a voltage control block that integrates the functions of the voltage control means and the function of the third voltage control means.

[0031] In the first electronic device, a tenth electronic device, wherein the first integrated circuit is a gallium arsenide integrated circuit.

[0032] In the first electronic device, the first integrated circuit is a BiCMOS integrated circuit including a bipolar transistor and a MOS transistor.
Eleventh electronic device.

In the eleventh electronic device, the first electronic device
Is an SOI type BiCMOS integrated circuit formed of a bipolar transistor and a MOS transistor formed in a silicon layer on an insulating film.
Electronic devices.

In the first electronic device, the first integrated circuit may include a MOS transistor.
A thirteenth electronic device, wherein the electronic device is an S integrated circuit.

In the thirteenth electronic device, the first electronic device
Of the MO formed on the silicon layer on the insulating film
A fourteenth electronic device, which is an SOI type CMOS integrated circuit including S transistors.

In the first electronic device, the second integrated circuit is an SOI BiCMOS integrated circuit formed of a bipolar transistor and a MOS transistor formed on a silicon layer on an insulating film. Electronic devices.

In the above first electronic device, the third integrated circuit may be a CMOS transistor.
A sixteenth electronic device, which is an OS integrated circuit.

In the sixteenth electronic device, the third electronic device
CM formed in a silicon layer on an insulating film
A seventeenth electronic device, which is an SOI CMOS integrated circuit including an OS transistor.

In the above-mentioned fourth electronic device, the first integrated circuit block and the second integrated circuit block are composed of a bipolar transistor and a MOS transistor formed in a silicon layer on an insulating film. B
An eighteenth electronic device integrated on an iCMOS integrated circuit substrate.

In the sixth electronic device, the second integrated circuit block and the third integrated circuit block are constituted by a bipolar transistor and a MOS transistor formed in a silicon layer on an insulating film. BiC
A nineteenth electronic device, which is a MOS integrated circuit.

In the above-mentioned eighth electronic device, the first integrated circuit block, the second integrated circuit block,
The twentieth electronic device, wherein the third integrated circuit block is an SOI-type BiCMOS integrated circuit including a bipolar transistor and a MOS transistor formed in a silicon layer on an insulating film.

In the tenth electronic device, the first electronic device
21. An electronic device according to claim 21, further comprising a battery system for supplying power to said voltage control means, said second voltage control means, and said third voltage control means.

A twenty-second electronic device according to the twenty-first electronic device, wherein the battery system supplies power at least by a solar cell.

A twenty-third electronic device according to the twenty-second electronic device, wherein the battery system includes power storage means for storing power from the solar cell.

A twenty-fourth electronic device according to the twenty-second electronic device, wherein the battery system supplies weak power from the solar cell and supplies main power from the main battery.

In the above-mentioned twenty-second electronic device, the battery system supplies weak power from the solar battery and the power storage means, and supplies main power from the main battery.
Electronic device of 5.

A twenty-sixth electronic device according to the twenty-first electronic device, wherein the battery system supplies power at least by physical power generation means.

The twenty-sixth electronic device according to the twenty-sixth electronic device, wherein the battery system includes power storage means for storing power from the power generation means.

A twenty-eighth electronic device according to the twenty-first electronic device, wherein the battery system supplies power using a power securing system that converts at least radio waves in space into electric power.

A twenty-eighth electronic device according to the twenty-eighth electronic device, wherein the battery system includes power storage means for storing power from the power securing system.

A thirty-second electronic device according to the twenty-eighth electronic device, wherein the battery system supplies weak power from the power securing system and supplies main power from the main battery. In the twenty-ninth electronic device, the battery system supplies weak power from the power securing system and the power storage unit, and supplies main power from a main battery.
Electronic device of 1.

In the twenty-first electronic device, the first electronic device
Voltage control means, the second voltage control means, and the third voltage control means, respectively, directly receive power from the battery system, respectively, in a first integrated circuit block and a second integrated circuit. Block, a direct connection means for supplying to the third integrated circuit block, and boosting the electric power from the battery system, respectively, the first integrated circuit block, the second integrated circuit block,
Step-up means for supplying to the third integrated circuit block, and step-down means for reducing the power from the battery system and supplying them to the first, second and third integrated circuit blocks, respectively. A thirty-second electronic device comprising: a switch unit that switches between the direct connection unit, the step-up unit, and the step-down unit.

In the twenty-first electronic device, the first electronic device
The voltage control means, the second voltage control means, and the third voltage control means directly supply power from the battery system to the first integrated circuit block, the second integrated circuit block, and the third integrated circuit block.
Direct connection means for supplying to any of the integrated circuit blocks of
Boosting means for boosting the power from the battery system and supplying it to one of a first integrated circuit block, a second integrated circuit block, and a third integrated circuit block; A thirty-third electronic device, wherein step-down means for supplying to any one of the first integrated circuit block, the second integrated circuit block, and the third integrated circuit block is commonly used through a switch means.

[0054]

Embodiments of the present invention will be described below with reference to the drawings.

The first to fifth embodiments have a configuration for realizing both low power consumption and high functionality by devising a circuit block division configuration and an integrated circuit process. Embodiments 6 to 9 show configurations for realizing low power consumption by devising a power supply system exclusively.

Embodiment 1 FIG. 1 is a block diagram of an electronic device according to a first embodiment of the present invention. As shown in the figure, the system includes a transmission / reception changeover switch 10, a transmission / reception circuit 2 constituting a power amplifier 11, a low noise amplifier 12, a reception mixer 13, a transmission mixer 14, a voltage controlled oscillator 16, and an RF constituting a frequency synthesizer 15. The signal processing circuit 3, the voltage control circuit 5 constituting the voltage conversion circuits 231, 232, and 233, the demodulator 17, the modulator 18, the audio signal processing circuit 19,
Control CPU 21, memory 22, image signal processing circuit 20
Is composed of four large blocks of the baseband signal processing circuit 4. The speaker 7 and the microphone 9 are connected to the audio signal processing circuit 19 of the baseband signal processing circuit 4, and the battery 6 is connected to the voltage control circuit 5.
Are connected, and the antenna 1 is connected to the transmission / reception circuit 2. The image signal processing circuit 20 provided in the baseband signal processing circuit 4 is provided for enhancing the function of the system, and is connected to the image input / output device 8.

Next, the operation of the above configuration will be described. The basic call function through the speaker 7 and the microphone 9 is exactly the same as the conventional example shown in FIG. 15, and each functional block in the transmission / reception circuit 2, the RF signal processing circuit 3, and the baseband signal processing circuit 4 , The transmission and reception of voice is performed.

On the other hand, the image input / output device 8 provided in this electronic device has various functions other than the voice communication function, for example, a connection function to the Internet, a facsimile communication function, an e-mail communication function, a still image processing function, It constitutes a user interface for realizing the moving image processing function and the voice recognition function, and realizes the various functions described above together with the image signal processing circuit 20 connected to the control CPU 21.

That is, the baseband signal processing circuit 4
It is composed of a one-chip CMOS, and includes a control CPU 21 and a memory 22 in addition to a demodulator 17, a modulator 18, and an audio signal processing circuit 19 in order to realize basic functions for performing audio communication. In the present embodiment, an image signal processing circuit 20 is further added to realize various advanced functions together with the external image input / output device 8.

A transmission / reception switch 10 connected to the antenna 1 and a power amplifier 11 as a high-frequency power circuit
Are integrated in a transmission / reception circuit 2 which is a one-chip gallium arsenide integrated circuit.

The low-noise amplifier 12, the reception mixer 13, the transmission mixer 14, the voltage-controlled oscillator 16, and the frequency synthesizer 15 for handling high-frequency analog signals are composed of one chip S
It is integrated in an RF signal processing circuit 3 which is an OI type BiCMOS integrated circuit.

The voltage control circuit 5 is connected to the control CPU 2
1 is a functional element controlled by the voltage conversion circuit 23
1 supplies power of a different voltage from the voltage conversion circuit 232 to the RF signal processing circuit 3, and from the voltage conversion circuit 233 to the baseband signal processing circuit 4. For this reason, the voltage control circuit 5 converts the voltage from the battery 6 into necessary voltages by the voltage conversion circuits 231, 232, and 233, respectively.
These circuits are configured on an integrated circuit.

Subsequently, as the RF signal processing circuit 3, the SO
The reason for using the I-type BiCMOS will be described below.

The RF signal processing circuit 3 mainly operates at 900 MHz
It processes high-frequency analog signals from z to about 5 GHz.

In particular, the low-noise amplifier 12 needs an element having a maximum oscillation frequency of about 10 times the actually handled frequency in order to amplify a high-frequency analog signal.

Further, the frequency synthesizer 15 needs a frequency dividing circuit capable of dividing the frequency to be handled with a current as small as possible. Further, for example, it is necessary that noise generated from the frequency dividing circuit does not affect the low-noise amplifier 12 through the substrate.

FIG. 2 shows a bulk MOS device, an SOI type MO.
FIG. 5 is a characteristic diagram showing the bias current dependence of the maximum oscillation frequency of the S element, bulk bipolar element, and SOI bipolar element.

On this characteristic diagram, the bulk MOS element and the S
When the respective maximum oscillation frequencies of the OI type MOS device are compared, there is no particular difference between the two. this is,
The difference between the SOI MOS device and the bulk MOS device is due to only the drain junction capacitance. That is, S
The drain junction capacitance of the OI type MOS device is a bulk MOS
It is extremely small, one fifth to one tenth, compared to the drain capacitance of the element, but the maximum oscillation frequency is evaluated by adding a matching circuit consisting of an inductance and a capacitance to each of the input and output sides. Therefore, the difference in the drain junction capacitance does not affect the maximum oscillation frequency.

On the other hand, in the case of the SOI type bipolar element, the maximum oscillation frequency is increased because the capacitance between the base and the collector is reduced as compared with the bulk bipolar element.

The MOS element has a larger current value for obtaining the same maximum oscillation frequency than the bipolar element.

That is, the characteristic diagram of FIG. 2 shows that the bipolar element can amplify a high frequency with lower power consumption than the MOS element.

FIG. 3 shows a bulk MOS device, SOI type MO.
FIG. 4 is a characteristic diagram illustrating a relationship between a maximum operating frequency and power consumption of a frequency divider including an S element, a bulk bipolar element, and an SOI bipolar element.

In FIG. 3, a bulk MOS device and an SOI
Comparing the type MOS devices, at the same power consumption, SOI
The maximum operating frequency is higher in the type MOS device. this is,
In the case of the frequency divider, it shows that the drain junction capacitance has a great effect on the performance. As a result, the SOI-type MOS device can achieve higher performance than a bulk bipolar device in a certain power consumption range. Further, in the case of the SOI type bipolar element, the capacitance between the collector and the substrate is reduced as compared with the bulk bipolar element, so that the maximum operating frequency is increased.

Now, the maximum operating frequency is 2 GHz.
Is assumed, the difference in power consumption of the bulk bipolar device is 1.8 times that of the bulk MOS device,
0.8 times in the case of the MOS type device and 0.6 times in the case of the SOI type bipolar device. That is, SOI type MOS
It is understood that the power consumption of the frequency divider can be significantly reduced by using the element and the SOI bipolar element.

FIG. 4 is a characteristic diagram comparing interference noise between a bulk substrate and an SOI substrate. This is 400
An RF signal is input to one of the two diffusion layers separated by about micron m, and this is the result obtained by measuring the signal power output to the other diffusion layer via the substrate. As is clear from the figure, the SOI substrate has smaller output power and less interference noise transmitted through the substrate than the bulk substrate. That is, interference noise can be reduced by using the SOI substrate.

That is, a MOS element and an SOI substrate
By integrating the bipolar element, it is possible to realize a high-performance RF signal processing circuit 3 with low power consumption and little interference noise.

Subsequently, the transmission / reception circuit 2, R shown in FIG.
The power supply voltage of each integrated circuit of the F signal processing circuit 3, the baseband signal processing circuit 4, and the voltage control circuit 5 will be described.

Each integrated circuit requires a different power supply voltage depending on the process and the required performance. For example, the transmitting and receiving circuit 2 has 2 volts, the RF signal processing circuit 3 has 1.5 volts, and the baseband signal processing circuit 4
Is 0.5 volts, and the voltage control circuit 5 is 3 volts.

Now, assuming that the battery 6 is a lithium ion battery, its electromotive force is 3 volts. The voltage of 3 volts is converted into 2 by the three voltage conversion circuits 231, 232, and 233 constituting the voltage control circuit 5, respectively.
The voltage is converted into a voltage of volts, 1.5 volts, and 0.5 volts, and supplied to the corresponding circuit blocks. As described above, the transmission / reception circuit 2 and the RF
The signal processing circuit 3 and the baseband signal processing circuit 4 generate and supply a voltage that can exhibit the maximum performance with the lowest power consumption, so that the power consumption of the entire system can be achieved without sacrificing the analog performance. Can be reduced.

The battery 6 is not limited to a lithium-ion battery, but may be an alkaline dry battery, a nickel-metal hydride battery, or a solar battery as long as it can supply necessary power.
Of course, any type of battery is applicable.

Incidentally, the electromotive force in the case of an alkaline dry battery is 1.5 volts. In this case, the voltage is directly supplied from the battery to the RF signal processing circuit 3 and the voltage of the voltage control circuit 5 is transmitted to the transmitting / receiving circuit 2. 2 that has been boosted by the conversion circuit 231
The volts are supplied to the baseband signal processing circuit 4 by the voltage conversion circuit 233 of the voltage control circuit 5.
What is necessary is just to supply 5 volts. Of course, the voltage control circuit 5
The voltage conversion circuit 232 may regulate the voltage from 1.5 volts to 1.5 volts and supply the regulated voltage to the RF signal processing circuit 3.

On the other hand, in the case of a nickel-metal hydride battery, the electromotive force is 1.2 volts, so that the voltage conversion circuits 231, 232, and 233 of the voltage control circuit 5 respectively output 2 volts, 1.5 volts, and 0.5 volts. It is stepped up or down converted to 5 volts and supplied to the corresponding circuits.

In the case of a solar cell, the electromotive force is
0.5 volts. In this case, this voltage is directly supplied to the baseband signal processing circuit 4 and the transmitting / receiving circuit 2
The voltage conversion circuit 231 of the voltage control circuit 5 performs step-up conversion 2
Volts may be supplied to the RF signal processing circuit 3 so as to supply 1.5 volts boosted by the voltage conversion circuit 232 of the voltage control circuit 5. Of course, the voltage conversion circuit 233 of the voltage control circuit 5 may regulate the voltage from 0.5 volt to 0.5 volt and supply the regulated voltage to the baseband signal processing circuit 4.

The present invention is effective even when a voltage other than the present embodiment is supplied as a power supply voltage for each of the integrated circuit blocks. For example, even if the voltage of the transmission / reception circuit 2 and the RF signal processing circuit 3 is 2.5 volts, the voltage of the baseband signal processing circuit 4 is 1.5 volts, or any other various combinations, Any voltage setting may be used as long as the performance of the circuit block is brought out and the overall power consumption is reduced.

Embodiment 2 FIG. 5 is a circuit block diagram of an electronic device according to Embodiment 2 of the present invention. Embodiment 1 of this embodiment
The difference is that, instead of using the voltage control circuit 5 that has generated a suitable voltage for each integrated circuit block, the inside of each transmitting / receiving circuit 2, the RF signal processing circuit 3, and the baseband signal processing circuit 4, That is, voltage conversion circuits 231, 232, and 233 for converting the voltage of the battery 6 into voltages necessary for the respective circuit blocks are incorporated. In this case, the voltage conversion circuits 231, 232, 2
In order to incorporate 33, it is desirable that the transmission / reception circuit 2 is constituted by a CMOS element or a BiCMOS element, and the baseband signal processing circuit 4 is constituted by a CMOS element.

With the configuration as in the present embodiment,
The basic circuit block includes a transmission / reception circuit 2, an RF signal processing circuit 3, and a baseband signal processing circuit 4, and at least 3
Since the whole can be constituted by one integrated circuit chip, a small-sized electronic device can be realized at lower cost.

Embodiment 3 FIG. 6 is a circuit block diagram of an electronic device according to Embodiment 3 of the present invention. Embodiment 2 of this embodiment
The difference is that the transmitting / receiving circuit 2 and the RF signal processing circuit 3
That is, the high-frequency analog signal processing circuit 24 is integrated into a single-chip integrated circuit. Note that a voltage conversion circuit 234 that converts the voltage from the battery 6 into a voltage suitable for the high-frequency analog signal processing circuit 24 is incorporated therein. In this case, since the transmission / reception circuit 2 is incorporated in the conventional RF signal processing circuit 3, the transmission / reception changeover switch 10 and the transmission mixer 14 are formed by SOI CMOS elements or S
It is desirable to configure with an OI type BiCMOS element. The configuration of the baseband signal processing circuit 4 is the same as that of the second embodiment.

With the configuration as in the present embodiment,
The basic circuit block includes a high-frequency analog signal processing circuit 24.
And the baseband signal processing circuit 4, which can be composed entirely of at least two integrated circuit chips. Therefore, a smaller-sized electronic device can be realized at lower cost.

Embodiment 4 FIG. 7 is a circuit block diagram of an electronic device according to Embodiment 4 of the present invention. Embodiment 2 of this embodiment
The difference is that the RF signal processing circuit 3 and the baseband signal processing circuit 4 are integrated into the RF / baseband signal processing circuit 25 to form a one-chip integrated circuit.
Note that a voltage conversion circuit 235 that converts the voltage from the battery 6 into a voltage suitable for the RF / baseband signal processing circuit 25 is incorporated therein. In this case, the conventional R
Since the baseband signal processing circuit 4 is taken into the F signal processing circuit 3, the demodulator 17, the modulator 18, the audio signal processing circuit 19, the image signal processing circuit 20, the control CPU 2
1. It is desirable that the memory 22 be composed of an SOI type CMOS device. The configuration of the transmission / reception circuit 2 is the same as that of the second embodiment.

With the configuration as in this embodiment,
The basic circuit block includes the transmission / reception circuit 2 and the RF / baseband signal processing circuit 25, and can be composed entirely of at least two integrated circuit chips. Therefore, a smaller-sized electronic device can be realized at lower cost.

Embodiment 5 FIG. 8 is a circuit block diagram of an electronic device according to Embodiment 5 of the present invention. Embodiment 2 of this embodiment
The difference is that all of the transmitting / receiving circuit 2, the RF signal processing circuit 3, and the baseband signal processing circuit 4 are integrated into the signal processing circuit 26 to form a one-chip integrated circuit. The voltage conversion circuit 23 converts the voltage from the battery 6 into a voltage suitable for the signal processing circuit 26.
6 is incorporated. In this case, since the transmission / reception circuit 2 and the baseband signal processing circuit 4 are incorporated into the conventional RF signal processing circuit 3, the transmission / reception changeover switch 10,
Transmission mixer 14, demodulator 17, modulator 18, audio signal processing circuit 19, image signal processing circuit 20, control CPU 2
1. It is desirable that the memory 22 be composed of SOI type BiCMOS elements.

With the configuration as in the present embodiment,
Since the basic circuit block is only one of the signal processing circuits 26 and can be entirely composed of at least one integrated circuit chip, a smaller-sized electronic device can be realized at lower cost.

As described above, according to the first to fifth embodiments, the transmitting / receiving circuit 2 mainly composed of a high-frequency circuit, the RF signal processing circuit 3 mainly composed of an analog circuit, and the digital circuit mainly The baseband signal processing circuits 4 to be integrated are integrated by an optimal process, and the required power supply voltage is individually supplied to improve the performance, function, and power consumption of each circuit block. At the same time, a compact, low-cost electronic device with a long battery life can be realized.

Embodiment 6 FIG. 9 is a circuit block diagram of an electronic device according to Embodiment 6 of the present invention. The basic configuration of this embodiment is the same as that of the first embodiment, except that a power supply system using a solar cell is mounted instead of the battery 6.

As shown in the figure, the antenna 1, transmission / reception circuit 2, RF signal processing circuit 3, baseband signal processing circuit 4, voltage control circuit 5, speaker 7, image input / output device 8, and microphone 9 The basic parts constituting the device are housed in the communication device system main body 27.
On the other hand, the communication device system main body 27 is housed in a protective communication device case 28.

A solar cell 29 for obtaining an electromotive force from external light is attached to the outer surface of the communication device case 28. A storage battery 30 is also provided inside the communication device case 28. By the way, the electric power generated by the solar cell 29 is
The voltage is supplied from the changeover switch 31 to the voltage control circuit 5 via the power jack 32. On the other hand, electric power from the storage battery 30 is supplied from the changeover switch 33 to the voltage control circuit 5 via the power jack 32. Changeover switch 31,
33 is controlled via a control terminal 58 by a changeover switch control circuit 34 provided on the communication device system main body 27 side.

Next, the operation of the above configuration will be described.

The electronic device of this embodiment uses a solar cell 29 and a storage battery 30 together as a power system.

The solar cell 29 is attached to the outer surface of the communication device case 28 in order to maximize the effective area. In the case of a general simplified mobile phone, several hundred cm
An area of about 2 is feasible.

Incidentally, since the power generation capacity of the solar cell 29 under a fluorescent lamp is about 20 μW / cm ² , the area of the solar cell 29 on the outer surface of the communication device case 28 is 200 cm ^2.
Then, 4 mW (= 20 μW / cm ² × 200 cm ² )
It is possible to generate electricity to a degree. On the other hand, the power consumption during standby of a general simplified type mobile phone is about several mW, so that the electronic device can be driven only by the solar cell 29 under a fluorescent lamp during standby.

On the other hand, during operation such as a telephone call, the power consumption is several hundred mW, but it is difficult to supply such power by the solar cell 29 alone. Therefore, in this case, power is supplied from the storage battery 30.

It is to be noted that, although the storage battery 30 is charged, it is desirable to supply power from the solar cell 29. The solar cell 29 is placed under various environments, but it is 1 to 10 mW / cm ² due to sunlight or the like in the daytime or when going out.
Some power generation is also possible. For example, if the person leaves the room for one hour on a cloudy day, the power obtained at that time is 200
Since the power is mW (= 1 mW / cm ² × 200 cm ² × 1 hour), the power required for continuous use for 30 to 40 minutes can be stored in the storage battery 30 depending on the power consumption of the device.

Considering the usage mode of the solar battery 29 and the storage battery 30, when the standby mode is used, the solar battery 29
The electronic device is driven by the power from the battery, and during operation such as a telephone call, the electronic device is driven solely by the power from the storage battery 30, and when the external light is sufficient, the power from the solar battery 29 is charged to the storage battery 30. Although some usage forms are considered, these controls are performed by switching the changeover switches 31 and 33 by the changeover switch control circuit 34 incorporated in the communication device system main body 27.

Note that, instead of using the solar cell 29 and the storage battery 30 in accordance with the operation mode of the electronic device,
Normally, the electronic device may be driven solely by the power from the storage battery 30, and the solar cell 29 may be used exclusively for charging the storage battery 30. In this case, the changeover switches 31 and 33 become unnecessary, and the changeover switch control circuit 34 for controlling the changeover becomes unnecessary.

When the device is very sunny or when the device is used only for a limited time during the day, the storage battery 30 is not required, and the electronic device is driven only by the power from the solar battery 29. You can also in this case,
The storage battery 30, the changeover switches 31 and 33, and the changeover switch control circuit 34 are not required, and the device configuration can be greatly simplified.

Since the electromotive force of the storage battery 30 is 0.5 volts, the power supplied from the power jack 32 to the voltage control circuit 5 is boosted to, for example, 2 volts by the voltage conversion circuit 231 and transmitted to the transmission / reception circuit 2. Supplied and voltage conversion circuit 2
At 32, the voltage is increased to, for example, 1.5 volts and supplied to the RF signal processing circuit 3. On the other hand, generated by the solar cell 29,
If the voltage of 0.5 volt is the voltage itself required by the baseband signal processing circuit 4, the voltage control circuit 5 does not convert the voltage as it is, and the baseband signal processing circuit 4
If a voltage other than that is required, the voltage may be converted to a required voltage by the voltage conversion circuit 233 and output.

The output power from the solar cell 29 is very unstable due to the influence of external light. Therefore, even if the apparatus is in a standby state, if the electromotive force of the solar cell 29 is not sufficient, Changeover switch 3 by changeover switch control circuit 34
1 and 33 so as to supply the electric power from the storage battery 30 to the voltage control circuit 5.

A voltage of 0.5 volt or more can be generated by connecting a plurality of solar cells 29 in series, so that the voltage required by the electronic device or the capability of the voltage control circuit 5 can be obtained. According to the solar cell 29
And the voltage generated by the storage battery 30 can be freely set.

Embodiment 7 FIG. 10 is a circuit block diagram of an electronic device according to Embodiment 7 of the present invention. The basic configuration of this embodiment is the same as that of the sixth embodiment, except that an alkaline dry battery 35 is used instead of the storage battery 30. In order to realize such a basic configuration, only the solar battery 29 is provided in the communication device case 28, and the other alkaline dry batteries 35 and the changeover switches 31 and 33 are housed inside the communication device system main body 27. . Then, the electric power from the solar cell 29 is passed through the battery jack 36.
This is supplied to the communication device system main body 27 side.

According to the configuration of the present embodiment, the power generated by the solar cell 29 cannot be charged to the alkaline dry battery 35, but the power during standby is supplied solely by the solar cell 29.
By using the alkaline dry battery 35 only during the operation, the life of the alkaline dry battery 35 can be greatly extended.

In this case, since the voltage from the solar cell 29 is 0.5 volts and the voltage from the alkaline dry cell 35 is 1.5 volts, the voltage is supplied to the voltage control circuit 5 during standby and during operation. Will be different. Therefore, the voltage control circuit 5 and the voltage conversion circuits 231 and 23
2, 233 is provided with an input voltage switching function. Even if the input voltage is switched, the output side is controlled so that a desired voltage output is obtained.

It is also possible to generate a voltage of 0.5 volt or more by connecting a plurality of solar cells 29 in series, so that this voltage is adjusted to the supply voltage from the alkaline dry cell 35. Is also good.

Note that a nickel-metal hydride battery may be used instead of the alkaline dry battery 35. in this case,
The generated voltage is 1.2 volts.

The output power from the solar cell 29 is extremely unstable due to the influence of external light. Changeover switch 3 by changeover switch control circuit 34
1 and 33 are controlled so that the electric power from the alkaline dry battery 35 is supplied to the voltage control circuit 5.

Embodiment 8 FIG. 11 is a circuit block diagram of an electronic device according to Embodiment 8 of the present invention. The basic configuration of this embodiment is the same as that of the sixth embodiment, except that a private power generation system 37 is incorporated in place of the solar cell 29. In order to realize this basic configuration, a self-power generation system 37, a storage battery 30, and changeover switches 31, 3,
3 is built in, and power is supplied from the power jack 32 to the voltage control circuit 5 in the communication device system main body 27.

The operation of the above configuration will now be described.

The electronic device of this embodiment uses both the private power generation system 37 and the storage battery 30 as a power system.

The in-house power generation system 37 is a power generation system already used in watches and the like, and is a device that physically detects movement of an arm or the like and turns a generator to generate electric power. In the case of a clock or the like, it is known that a power generation amount capable of continuously supplying 1 μW of power for one month can be obtained only by swinging an arm. That is, the average number of mW required when the electronic device is on standby only by operating the device for about two minutes a day.
Power can be obtained.

In this case, specifically, the power generation amount is about 3.6 mW. Therefore, if the operation is performed for about 20 minutes a day, that is, the arm is moved or walked for about 20 minutes. If the private power generation system 37 is operated, an average power of 36 mW can be obtained.

[0120] Therefore, in consideration of the fact that the power consumption of a general portable telephone in standby mode is about several mW, the electronic device can be driven only by the private power generation system 37 in standby mode.

On the other hand, during operation such as a telephone call, the power consumption is several hundred mW, but it is difficult to supply such power by the private power generation system 37 alone. Therefore, in this case, power is supplied from the storage battery 30.

It is to be noted that, although the storage battery 30 is charged, it is desirable to supply power from the private power generation system 37.
The amount of power generated by the private power generation system 37 varies depending on the movement of the person carrying it. However, considering the general business scene, it is considered that the movement is from 5,000 steps to about 10,000 steps. Then, the private power generation system 3
7 will operate for one to two hours. The amount of power generated in this case is about 100 mW to about 200 m
If the operation time per day is about one hour, power supply is sufficient by itself, including standby time, and the storage battery 30 does not need to be separately charged.

Embodiment 9 FIG. 12 is a circuit block diagram of an electronic device according to Embodiment 9 of the present invention. The basic configuration of the present embodiment is the same as that of the sixth embodiment, except that instead of the solar cell 29, a useless radio wave transmitted from a nearby communication device system is received, and the received radio wave is transmitted to a power source. That is, a power securing system 39 for converting the power into the power is provided. In order to realize this basic configuration, an antenna (not shown) in which a plurality of antennas are arranged in a mesh pattern is arranged on the outer surface of the communication device case 28 that houses the communication device system main body 27, and this is connected to the power securing system 39. On the other hand, a storage battery 30 for storing power generated by the power securing system 39 and a battery 6 for supplying necessary power when the electronic device is used are provided side by side, and the power securing system 39, the storage battery 30, and the battery 6 In order to selectively supply power to the communication equipment system main body 27, the changeover switches 31, 33, and 40, which are controlled to be switched through the control terminal 58, from the changeover switch control circuit 34 provided in the communication equipment system main body 27. Be placed. Then, the changeover switches 31, 33, and 40 are controlled in accordance with the amount of power required for the communication device system main body 27 to select the power securing system 39, the storage battery 30, and the battery 6, and the communication device is connected to the power jack 32. The configuration is such that power is supplied to the voltage control circuit 5 in the system main body 27.

The operation of the above-described configuration will now be described.

The electronic device of this embodiment uses a power securing system 39, a storage battery 30, and a battery 6 together as a power system.

The power securing system 39 uses wasteful radio waves overflowing in space. Generally, since this radio wave has an average of about several μW per antenna,
By arranging about 100 antennas in a mesh pattern on the outer surface of the communication device case 28, it is possible to extract several mW of power. Accordingly, by supplying this power from the changeover switch 31 to the voltage control circuit 5 of the communication device system main body 27 through the power jack 32, the power of the communication device system main body 27 during standby can be sufficiently provided. If surplus power is generated in a place where radio waves are strong, the surplus power is stored in the storage battery 30. If sufficient power is not obtained in a place where the telephone is weak, the switch 33 is controlled to control the storage battery. 30 supplies power to the communication equipment system main body 27.

On the other hand, when the communication equipment system main body 27 is changed from the standby state to the use state, the switch 40 is controlled to supply power from the battery 6 to the communication equipment system main body 27. If the storage battery 30 has a sufficient capacity, instead of the battery 6, the storage battery 30 first supplies the power 33 during operation to the communication device system main body 27,
When the remaining capacity of the storage battery 30 is exhausted, the power supply may be switched to the battery 6.

As the battery 6, an alkaline dry battery or a nickel-metal hydride battery is used. In this case, the output voltage is 1.5 volts or 1.2 volts, and these voltages are necessarily Security system 3
9 and the output voltage of the storage battery 30 do not always match. Therefore, the voltage conversion circuits 231 and 23 of the voltage control circuit 5
2, 2 and 233 are provided with a voltage switching function (not shown) or a general voltage compatible function.

As described above, the electronic device of the present embodiment is configured to use radio waves overflowing in space as a power source, so that it is possible to suppress power consumption when the electronic device is in a state of low power consumption during standby. In addition, the use time of the electronic device can be greatly extended.

As described above, in the sixth, seventh, eighth, and ninth embodiments, various power systems are configured to be switched and used in accordance with various operation states of the communication device system main body 27, that is, required power states. Therefore, the life of the battery can be greatly extended, and the usable time of a portable electronic device, for example, a simplified type telephone can be greatly extended.

By the way, the power systems of the sixth, seventh, eighth, and ninth embodiments are not only applied independently, but are also applied in combination, thereby compensating for the weak points of each, thereby providing a more effective sub power. The system can be configured.

FIG. 13 is a block diagram showing an example of the configuration of the voltage control circuit 5 exemplified in each of the above embodiments.

As shown in FIG.
1 has a function of supplying a voltage from a battery system to, for example, a 2-volt system, for example, to the transmission / reception circuit 2 in FIG. 1. The voltage conversion circuit 232 supplies a voltage from the battery system to, for example, 1. A 5 volt system, for example, has a function of supplying the RF signal processing circuit 3 of FIG.
Reference numeral 3 denotes a voltage from a battery system, for example, a 0.5 volt system, for example, the baseband signal processing circuit 4 in FIG.
It has the function of supplying to

In order to realize the above functions, the voltage conversion circuit 231 includes a switch 48 for directly outputting battery system power and a switch 47 for outputting battery system power via the booster circuit 41. And a switch 49 for outputting the power of the battery system through the step-down circuit 44. When the output voltage of the battery system matches the 2 volts required for the 2 volt system, the switch 48 is turned on. Then, the voltage of the battery system is directly sent to the system, and the output voltage of the battery system becomes 2
If the voltage is lower than volt, the switch 47 is turned on to boost the voltage of the battery system to 2 volts by the booster circuit 41,
When the output voltage of the battery system is higher than 2 volts, the switch 49 is turned on, the voltage of the battery system is reduced to 2 volts by the step-down circuit 44, and is sent out to the system.

On the other hand, the voltage conversion circuit 232 includes a switch 51 for directly outputting battery power and a switch 5 for outputting battery power via the booster circuit 42.
0, and a switch 52 for outputting battery system power through the step-down circuit 44. When the battery system output voltage matches the 1.5 volt required for the 1.5 volt system Turns on the switch 51 and sends the voltage of the battery system directly to the system. If the output voltage of the battery system is lower than 1.5 volts, the switch 50 is turned on to reduce the voltage of the battery system. After the voltage is increased to 1.5 volts by the booster circuit 42 and sent out to the system, if the output voltage of the battery system is higher than 1.5 volts, the switch 52 is turned on to reduce the voltage of the battery system to the step-down circuit. At 45, drop to 1.5 volts and deliver to system.

On the other hand, the voltage conversion circuit 233 includes a switch 54 for directly outputting the battery system power and a switch 5 for outputting the battery system power via the booster circuit 43.
3 and a switch 55 for outputting battery system power via the step-down circuit 46, and when the battery system output voltage matches the 0.5 volt required for the 0.5 volt system. Turns on the switch 54 to directly send the voltage of the battery system to the system, and when the output voltage of the battery system is lower than 0.5 volts, turns on the switch 53 to reduce the voltage of the battery system. After the voltage is boosted to 0.5 volt by the booster circuit 43 and sent out to the system, if the output voltage of the battery system is higher than 0.5 volt, the switch 55 is turned on to reduce the voltage of the battery system to the step-down circuit. At 46, the pressure is reduced to 0.5 volt and sent to the system.

As described above, by configuring the voltage control circuit 5, even when various types of battery systems of different output voltages are applied to the power system, the voltage control circuit 5 can be applied to each functional block constituting the electronic device. Thus, it is possible to supply electric power of a voltage required for each.

FIG. 14 is a block diagram showing another example of the configuration of the voltage control circuit 5 exemplified in each of the above embodiments.

In the example of FIG. 13, the voltage conversion circuits 231 and 2
Although the configuration in which the booster circuits 41, 42, 43 and the step-down circuits 44, 45, 46 are provided for each of the 32, 233 has been illustrated, in this configuration example, one two-output booster circuit 58 and one 2
An output step-down circuit 59 and one direct connection line 60 are arranged, and electric power from the battery system is led to a booster circuit 58, a step-down circuit 59, and a direct connection line 60 via a crossbar switch 56, and this is again passed to a crossbar switch 57. Thus, the system is configured to be output to each system. By the way, the booster circuit 58
Has two outputs of 1.5 volts and two volts, and the step-down circuit 59 has two outputs of 0.5 volts and 1.5 volts.

In the configuration described above, the voltage control circuit 5 adjusts the voltage from the battery system to, for example, a 2-volt system, for example, the transmission / reception circuit 2 of FIG.
For example, a case in which a function of supplying a volt system to the RF signal processing circuit 3 in FIG. 1 as an example, and a 0.5 volt system as an example to the baseband signal processing circuit 4 in FIG. The operation will be described.

Now, the voltage of the electric power supplied from the battery system is 0.
In the case of 5 volts, the crossbar switch 56 connects the electric power from the battery system to the direct connection line 60 and the booster circuit 58, and the crossbar switch 57 connects the direct connection line 60 to the 0.5 volt system and the booster circuit 58 Is connected to the 2 volt system, and the 1.5 volt output of the booster circuit 58 is connected to the 1.5 volt system. As a result, it is possible to supply power of a necessary voltage to each functional block constituting the electronic device.

On the other hand, the voltage of the power supplied from the battery system is
In the case of 1.5 volts, the crossbar switch 56 connects the power from the battery system to the direct connection line 60, the booster circuit 58, and the step-down circuit 59, and the crossbar switch 57 converts the direct connection line 60 to a 1.5 volt system. The 2 volt output of the booster circuit 58 is connected to the 2 volt system, and the 0.5 volt output of the step-down circuit 59 is connected to the 0.5 volt system. As a result, it is possible to supply power of a necessary voltage to each functional block constituting the electronic device.

On the other hand, when the voltage of the power supplied from the battery system is 2
In the case of volts, the crossbar switch 56 connects the power from the battery system to the direct connection line 60 and the step-down circuit 59, and the crossbar switch 57 connects the direct connection line 60 to the 2-volt system.
The 1.5 volt output of the step-down circuit 59 is connected to a 1.5 volt system, and the 0.5 volt output of the step-down circuit 59 is connected to a 0.5 volt system. As a result, it is possible to supply power of a necessary voltage to each functional block constituting the electronic device.

The use of the configuration of FIG. 14 is limited depending on the respective output voltages of the booster circuit 58 and the step-down circuit 59 and the voltage of the battery system. However, as compared with the configuration of FIG. The configuration can be greatly simplified, which is effective in reducing the pattern area when integrated.

The output of the step-up circuit 58 and the step-down circuit 59 is set to three outputs, for example, 0.5 volt, 1.5 volt and 2 volt, respectively. As long as the appropriate voltage system is the three systems of 0.5 volt, 1.5 volt, and 2 volt, the adaptability to the variation of the battery voltage is enhanced.

The output of the step-up circuit 58 and the step-down circuit 59 can be selected from variable outputs, for example, 0.5 volts, 1.5 volts, and 2 volts. Even if compatibility is limited, it is possible to flexibly respond to the voltage required by the electronic device.

Incidentally, the configuration of the voltage control circuit 5 is as follows.
Various circuit configurations other than the examples shown in FIGS. 13 and 14 can be applied. The voltage from the battery system is stepped up or down to obtain the respective functional blocks of the electronic device. It goes without saying that any configuration can be applied as long as the required voltage can be supplied.

The present invention is not limited to a simple portable telephone,
It goes without saying that the present invention can be applied to various types of mobile phones, other transmitting / receiving devices, and receiving devices such as pagers.

[0149]

As described above, in the electronic device of the present invention, the necessary functional blocks are processed in a process suitable for each circuit from the viewpoint of reducing power consumption and improving functions and performance.
Integrating circuits has reduced power consumption in addition to reducing the number of chips and cost, as well as reducing the size of devices, improving the performance of analog and high-frequency circuits, and increasing the functionality and cost of digital circuits. While simultaneously reducing power consumption and configuring a system suitable for battery-powered portable devices. In addition, the power system includes a solar cell, a private power generation system equipped with a physical generator, and airborne radio waves. By adding a power securing system or the like that generates power from a sub-system as a subsystem, there is an effect that the battery life can be greatly extended.

[Brief description of the drawings]

FIG. 1 is a circuit block diagram of an electronic device according to a first embodiment of the present invention.

FIG. 2 is a characteristic diagram showing the bias current dependence of the maximum oscillation frequency of various semiconductor elements.

FIG. 3 is a characteristic diagram showing a relationship between a maximum operating frequency and power consumption of a frequency divider composed of various semiconductor elements.

FIG. 4 is a characteristic diagram comparing interference noise between a bulk substrate and an SOI substrate.

FIG. 5 is a circuit block diagram of an electronic device according to a second embodiment of the present invention.

FIG. 6 is a circuit block diagram of an electronic device according to a third embodiment of the present invention.

FIG. 7 is a circuit block diagram of an electronic device according to a fourth embodiment of the present invention.

FIG. 8 is a circuit block diagram of an electronic device according to a fifth embodiment of the present invention.

FIG. 9 is a circuit block diagram of an electronic device according to a sixth embodiment of the present invention.

FIG. 10 is a circuit block diagram of an electronic device according to a seventh embodiment of the present invention.

FIG. 11 is a circuit block diagram of an electronic device according to an eighth embodiment of the present invention.

FIG. 12 is a circuit block diagram of an electronic device according to a ninth embodiment of the present invention.

FIG. 13 is a circuit block diagram illustrating an example of a configuration of a voltage control circuit 5.

FIG. 14 is a circuit block diagram showing another example of the configuration of the voltage control circuit 5.

FIG. 15 is a circuit block diagram of a conventional electronic device.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 antenna 2 transmission / reception circuit 3 RF signal processing circuit 4 baseband signal processing circuit 5 voltage control circuit 6 battery 7 speaker 8 image input / output device 9 microphone 10 transmission / reception switch 11 power amplifier 12 low noise amplifier 13 reception mixer 14 transmission mixer 15 frequency Synthesizer 16 Voltage control transmitter 17 Demodulator 18 Modulator 19 Audio signal processing circuit 20 Image signal processing circuit 21 Control CPU 22 Memory 231, 232, 233, 234, 235, 236 Voltage conversion circuit 24 High frequency analog signal processing circuit 25 RF / Baseband signal processing circuit 26 Signal processing circuit 27 Communication equipment system main body 28 Communication equipment case 29 Solar battery 30 Storage battery 31, 33, 40 Changeover switch 32 Power jack 34 Changeover switch control circuit 35 Alkaline dry power Pond 36 Battery jack 37 Private power generation system 38 Power supply unit 39 Power securing system 41, 42, 43, 58 Boosting circuit 44, 45, 46, 59 Step-down circuit 47, 48, 49, 50, 51, 52, 53, 54, 5
5 Switch 56, 57 Crossbar switch 58 Control terminal

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazumi Ino 1 Komukai Toshiba-cho, Saiwai-ku, Kawasaki-shi, Kanagawa Prefecture Inside Toshiba R & D Center (72) Inventor Yasuhiro Katsumata Yukihiro, Kawasaki-shi, Kanagawa Komukai Toshiba 1 Inside Toshiba R & D Center (72) Inventor Shigeyoshi Watanabe 1 Komukai Toshiba 1 In Kochi Mukai, Kawasaki City, Kanagawa Prefecture Toshiba R & D Center

Claims (1)

[Claims] A high-frequency circuit block mainly composed of a high-frequency circuit; an analog circuit block mainly composed of an analog circuit; a digital circuit block mainly composed of a digital circuit; A first voltage control means for generating a first voltage, a second voltage control means for generating a second voltage suitable for the first analog circuit block, and a third voltage suitable for the digital circuit block. A third voltage supply unit that generates, a first integrated circuit block in which the high-frequency circuit block is integrated, a second integrated circuit block in which the analog circuit block is integrated, and an integrated circuit of the digital circuit block And a third integrated circuit block.