JP2010114859A - Control circuit for communication terminal, and control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a control circuit for a communication terminal and a control method therefor, by which the terminal can be compact by eliminating the need for an external logic circuit. <P>SOLUTION: The control circuit for the communication terminal is adaptable to a plurality of communication systems and is adaptive to a plurality of frequency bands. The control circuit includes a logical storage means 1-1 comprising at least: an input means for a logic signal indicative of a communication system; an input means for a logic signal indicating an operational status of the communication terminal; an input means for a logic signal indicative of a frequency band to be used; and an output means for outputting logic values stored while considering the logic signal indicative of the communication system, the logic signal indicating the operational status of the communication terminal, and the logic signal indicative of the frequency band to be used. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a communication terminal, and more particularly to a control circuit and control method for a communication terminal.

  In a communication terminal such as a mobile phone, a control circuit in an RFIC (Radio Frequency Integrated Circuit) that processes high-frequency signals, a control circuit in a baseband IC that processes baseband signals, and the like The control side (controlled circuit) such as a high-frequency circuit or a baseband circuit is controlled according to the above.

  In addition, the controlled circuit may be changed as necessary, such as by replacing it with a component having a different specification or the like based on the required characteristics. In this case, the controlled circuit is controlled in accordance with the change in the configuration of the controlled circuit. It is necessary to change the control signal by connecting a logic circuit to the output side of the circuit.

For example, Patent Document 1 includes an antenna switching LSI (300) between two antenna units (400) each mounted on a receiving antenna of two frequency bands and the like, and a radio control LSI (200), and is influenced by hand-holding. The antenna switching LSI (300) is controlled by the designation signals (a, b) from the frequency band designation unit (230) in the radio control LSI (200) so as to exhibit the original antenna characteristics. When the number of antennas is reduced so that there is one antenna for one frequency band, the antenna switching control is changed by changing the number of antennas. A logic gate composed of AND or OR between the frequency band specifying unit (230) of (200) and the antenna switching LSI (300). (500) and the external connection is described to change the antenna switching logic.
JP 2007-158530 A (FIG. 6, paragraphs 0011-0014, 0076-0070)

  As described above, in the communication terminal, when the configuration of a controlled circuit such as a high-frequency circuit or a baseband circuit controlled by the control circuit is changed, the control circuit is set to a logic signal set in advance according to the state of the communication terminal. Therefore, in order to output an appropriate logic signal according to the configuration change of the controlled circuit, the control circuit output is controlled differently between the control circuit and the controlled circuit. It was necessary to add an external logic circuit such as a general-purpose logic IC for converting to a signal as appropriate.

  However, if an external logic circuit such as a general-purpose logic IC is further provided on the output side of the control circuit, not only the cost increases but also the mounting area increases, which hinders the miniaturization of the communication terminal.

(the purpose)
An object of the present invention is to provide a control circuit and a control method for a communication terminal that do not require an external logic circuit and can reduce the size of the terminal.

  A control circuit for a first communication terminal according to the present invention is a control circuit for a communication terminal that supports a plurality of communication systems and is adapted to a plurality of frequency bands, and includes at least a logic signal input unit indicating the communication system. A logic signal input means indicating the used frequency band; a logic signal input means indicating the operation state of the communication terminal; a logic signal indicating the communication system; a logic signal indicating the use frequency band; and an operation state of the communication terminal And a logical storage means including an output means for outputting a stored logical value in consideration of a logical signal indicating the above.

  A first communication terminal control method of the present invention is a communication terminal control method that supports a plurality of communication systems and adapts to a plurality of frequency bands, and includes at least a logic signal indicating the communication system, and a used frequency. A logic signal indicating a band and a logic signal indicating an operation state of the communication terminal are input, and a logic signal indicating the communication system, a logic signal indicating the use frequency band, and a logic signal indicating the operation state of the communication terminal are input. The logical value is output as a control signal with reference to a logical storage means in which the considered logical value is stored.

  According to the present invention, it is not necessary to connect an external logic circuit such as a general-purpose logic IC to the output side of the control circuit, and it is possible to easily generate and output a complex logic output. In addition, since no external circuit is required, both cost and mounting area can be suppressed.

(First embodiment)
A first embodiment of a control circuit and control method for a communication terminal according to the present invention will be described below.

  1A and 1B are diagrams showing a configuration of a first embodiment of the present invention, in which FIG. 1A shows a communication terminal control circuit, and FIG. 1B shows a communication terminal control method.

  As shown in FIG. 1A, the control circuit of the present embodiment includes a logical storage unit 1-1 including a plurality of input units 1-2 to 1-4 and an output unit 1-5. Is done. For example, the control circuit has three input means and one output means.

  The logical storage unit 1-1 outputs a plurality of logic signals corresponding to combinations of logic signals input from the plurality of input units, the first input unit 1-2 to the third input unit 1-4. Stored information in consideration of signals from the input means 1-2 to the input means 1-4 is stored.

  The logical storage unit 1-1 includes, as a plurality of input units 1-2 to 1-4, a first input unit 1-2 that inputs at least a logic signal indicating a communication system that is adapted, and a use frequency. A second input unit 1-3 for inputting a logical signal indicating a band; and a third input unit 1-4 for inputting a logical signal indicating a mechanical operation state of the communication terminal; Output means 1-5 for outputting a stored logic signal in consideration of a logic signal indicating, a logic signal indicating the used frequency band, and a logic signal indicating an operation state of the communication terminal.

  The logical storage unit 1-1 can be configured as a combination of logic circuits. In this case, a combination (connection configuration) of a specific logic circuit can be used as the stored information. In this configuration, the plurality of input units 1-2 to 1-4 input the logic signals to the combination of the specific logic circuits, and the output unit 1-5 outputs the logic signals output by the logic circuits. Is output as a control signal.

  In addition, the logical storage unit 1-1 can be configured as a storage circuit such as a memory that stores a logical value as storage data. In this case, the logical value may be the storage information that stores the logical value in advance. it can. In this configuration, the logic signals of the plurality of input units 1-2 to 1-4 specify a specific logic value of the memory circuit, and the output unit 1-5 outputs a logic signal based on the specified logic value. Is output as a control signal.

  Any storage information of the logical storage means 1-1 can be configured to be changeable from the outside. That is, when the stored information is a combination of logic circuits, the connection configuration can be changed from the outside, and when the stored information is a logic value, the stored logic value can be rewritten from the outside.

  As shown in FIG. 1 (b), the control method of the present embodiment is the logical circuit as a control circuit that controls a controlled circuit of a communication terminal that supports a plurality of communication systems and adapts to a plurality of frequency bands. A control signal is output by referring to the storage unit 1-1. That is, a logic signal indicating the communication system of the communication terminal is input to the first input unit 1-2 (s1-1), and a logic signal indicating the used frequency band is input to the second input unit 1-3 (s1). -2), a logic signal indicating the operation state of the communication terminal is input to the third input means 1-4 (s1-3), the logic signal indicating the communication system, the logic signal indicating the used frequency band, and the communication With reference to the logical storage means 1-1 in which a logical value in consideration of the logical signal indicating the operation state of the terminal is stored (s1-4), the logical value is output as a control signal (s1-5). Each logic signal can be input in any order.

(Second Embodiment)
As a second embodiment of the present invention, a configuration example of a control circuit in a mobile phone terminal such as a mobile phone using the logical storage means 2-1 as a storage circuit will be described.

  FIG. 2 is a diagram showing the configuration of the second exemplary embodiment of the present invention. The logical storage means 2-1 has a first input means 2-2 for inputting a logic signal indicating a communication system adapted to the same as in FIG. 1, and a second input for inputting a logic signal indicating a used frequency band. Input means 2-3 and third input means 2-4 for inputting a logic signal indicating the operation state of the mobile phone terminal.

  The logical storage means 2-1 is an output means for outputting the logical value 2-7 stored in the logical storage means 2-1, and two output means, that is, a first output means 2-8 and And a second output means 2-9, and a logic value stored in consideration of a logic signal indicating the communication system, a logic signal indicating the used frequency band, and a logic signal indicating the operation state of the mobile phone terminal. The logic output 1 and the logic output 2 based on the above are output.

  More specifically, the logical storage means 2-1 is stored when the logic signals of the first input means 2-2 to the third input means 2-4 are respectively binary (1 bit) signals. The logical value is composed of a register table 2-5 in which a 3-bit address (input logical value) 2-6 and a 2-bit output logical value 2-7 are stored in a corresponding manner.

  That is, the logical storage means 2-1 inputs a 3-bit logic signal, which is a combination of three logic signals, from the first input means 2-2 to the third input means 2-4, and the 3-bit logic signals are inputted. The address (input logic value) 2-6 that matches the logic signal is specified, and the 2-bit output logic value 2-7 corresponding to the address 2-6 is set as the logic output 1 and the logic output 2 by 1 bit respectively. Read out from the output means 2-8 and the second output means 2-9.

The first input means 2-2 has, for example, WCDMA (Wideband Code Divis) as a communication system.
A logic signal that specifies ion multiple access (GSM) or GSM (Global System for Mobile Communications) can be input, and a logic signal that specifies, for example, an 800 MHz band or a 2 GHz band is input to the second input means 2-3. The third input means 2-4 can input, for example, a logic signal for specifying an open state or a closed state of the housing of the folding cellular phone terminal.

  For example, the input signals of the first input unit 2-2, the second input unit 2-3, and the third input unit 2-4 are respectively WCDMA logical input “0”, 2 GHz logical input “1”, In the case of the logical input “0” of the open state of the mobile phone terminal, the logical storage unit 2-1 inputs “010” as an address and is based on the output logical value “10” stored corresponding to the address. Then, “1” is output as the logical output 1 from the first output means 2-8, and “0” is output as the logical output 2 from the second output means 2-9.

The stored data of the register table 2-5 shown in FIG. 2 is set so that a 2-bit output logical value can be output for 8 (= 2 ³ ) of all combinations of 3-bit logical signals (input logical values). As an example, there are 4 (= 2 ² ) output logic values of 2 bits, so that the same 4 logic values are stored in advance according to other input signals for each input signal of WCDMA and GSM. Yes.

  In other words, lines 1 to 4 of register table 2-5 are WCDMA, lines 5 to 8 are GSM, lines 1 and 2 of WCDMA are 800 MHz band, lines 3 and 4 are 2 GHz band, and 1 line of WCDMA and 800 MHz band is open. The stored data is stored as in the state, the second row, and the like.

  FIG. 3 is a flowchart showing the operation of the second embodiment. When a logic signal indicating a communication system is input to the first input means 2-2 (s2-1), the logic signal is a WCDMA logic “0” in the input logic table of the register table 2-5 or a GSM logic. It is determined whether it is “1” (s2-2). Next, when a logic signal indicating the used frequency band is input to the second input means 2-3 (s2-3), the logic signal is a logic of the used frequency band of 800 MHz in the input logic table of the register table 2-5. It is determined whether it is “0” or logic “1” in the 2 GHz band (s2-4). Further, when a logic signal indicating the operation state of the mobile phone terminal is input to the third input means 2-4 (s2-5), the logic signal is in an open state of folding of the input logic table of the register table 2-5. It is determined whether the logic is “0” or the logic “1” in the closed state (s2-6), and the address of each combination is selected (s2-7). In this way, the logical storage means 2-1 outputs the logical output of the storage data “00” “01”... “11” of the output logical value corresponding to each as the control signal (s2-8).

  The logical value storage data shown in FIG. 2 described above is an example. At the time of manufacturing or using the logical storage means 2-1 or the mobile phone terminal, the logical value can be appropriately set by external writing or erasing.

  Next, an RFIC (Radio Frequency Integrated Circuit) that inputs and outputs RF signals is used as a control circuit for the logical storage means 2-1 of the second embodiment shown in FIG. 2 to control the controlled circuit of the communication terminal. A configuration example in which the controlled circuit is an antenna changeover switch (antenna switch) and a matching changeover circuit (matching changeover circuit) will be described.

  In this controlled circuit, for example, existing products with different specifications are selectively used as appropriate, and the logical storage unit 2-1 needs to output a different control signal each time. Hereinafter, for convenience of explanation, the communication system will be described as WCDMA.

  4 and 5 are diagrams showing a configuration example including controlled circuits with different specifications according to the present embodiment. An RFIC 2-14 having a logical storage means 2-1, and a controlled circuit 2-15 (or 2-) having an antenna switch 2-10 (or 2-12) and a matching switching circuit 2-11 (or 2-13). 16) and a plurality of RF paths for transmission / reception between the antenna switch 2-10 (or 2-12) and the RFIC 2-14.

  In the specification of the controlled circuit 2-15 shown in FIG. 4, it is necessary to input two independent 1-bit logic signals as control signals for the antenna switch 2-10 and the matching switching circuit 2-11 of the controlled circuit 2-15. There is.

  The controlled circuit 2-15 has four combinations of the antenna switch 2-10 and the matching switching circuit 2-11. The logical storage means 2-1 includes the antenna switch 2-10 and the matching switching circuit 2-11. By switching, for example, it is possible to control high-precision adjustment with respect to changes in the radio wave environment depending on whether the mobile phone terminal is in a handheld state or the like.

  In general, since the user is in the handheld state of the mobile phone terminal in the open state of the folding housing or the slide housing state of the mobile phone terminal, there is a correlation between the operation state of the mobile phone terminal and the impedance of the antenna, etc. The controlled circuit such as the antenna switch and the matching switching circuit can be appropriately controlled according to the logical input of the operation state by the logical storage means as the control circuit.

  In the specification of the controlled circuit 2-16 shown in FIG. 5, it is necessary to input a common 1-bit 1 logic signal as a control signal for the antenna switch 2-12 and the matching switching circuit 2-13. For example, the antenna switch 2-12 and the matching switching circuit 2-13 are configured by switches such as SPDT (Single Pole Double Throw) that operates by a 1-bit logic signal.

  This controlled circuit 2-16 has two combinations of an antenna switch 2-12 and a matching switching circuit 2-13, and the logical storage means 2-1 is, for example, compared with the controlled circuit 2-15 shown in FIG. Thus, it is possible to adjust the medium accuracy, while the configuration of the mobile phone terminal can be further simplified.

  6 and 7 are diagrams showing control signals output from the logical storage means 2-1 to the controlled circuit 2-15 or 2-16 having different specifications. In the second embodiment (FIG. 2), since four kinds of logical values are stored in advance according to other input signals in the WCDMA input signal, the controlled circuit 2-15 shown in FIG. 4 is mounted. As shown in FIG. 6, the logical storage means 2-1 outputs the first-bit logic output 1 and the second-bit logic output 2 of the output logic value separately, so that the four types of switching control are performed. Is possible. When the controlled circuit 2-16 shown in FIG. 5 is mounted, only the first logical output 1 of the output logic of the logical storage means 2-1 is output as shown in FIG. Two types of switching control are possible.

(Third embodiment)
In the above embodiment, the storage circuit of the logical storage unit 2-1 has been described as having a configuration in which two logic signals are output with respect to a 3-bit logic input. However, the register table that configures the storage circuit is a storage area such as a memory. Since it can be configured arbitrarily by ensuring the number of logical inputs and logical outputs as required by the control signal of the controlled circuit, the stored data can be used for more complex controlled circuit control. This can be dealt with by appropriately changing.

  FIG. 8 is a diagram showing the configuration of the third exemplary embodiment of the present invention. In this embodiment, the antenna switch 3-10 includes eight antenna switching connection paths, that is, RF paths 1 to 8, and four matching circuits Z1 to Z4 for switching the matching switching circuit 3-11. With this configuration on the controlled circuit side, the logical storage means 3-1 in the RFIC 3-14 uses control signals a to c for switching the RF paths 1 to 8 and switching circuits for the matching circuits Z1 to Z4 as control signals. It is necessary to output a total of five logic outputs of the control signals d and e.

  Even if the used frequency band is almost the same, the transmission and reception characteristics are slightly different, so it is necessary to select the optimal antenna connection path in each frequency band of each communication system or to the optimal antenna impedance This is an example of the configuration when matching is required.

  FIG. 9 is a diagram illustrating data stored in the register table 3-5 of the logical storage unit 3-1 according to the third embodiment. Corresponding to the logical output necessary for switching the antenna switch 3-10 and the matching switching circuit 3-11 shown in FIG. 8, the register table 3-5 has an address (input logical value) 3-6 for a 3-bit input signal. Then, output logical values 3-7 for outputting five logical outputs a to e corresponding to the address data are stored.

  By the selective combination of the matching circuits Z1 to Z4 corresponding to the antenna paths 1 to 8 according to the configuration of the present embodiment, the transmission power and reception by the antenna according to the operation state such as the communication system, the used frequency band and the opening / closing of the housing. State optimization can be realized.

(Fourth embodiment)
In the above embodiment, an example in which a logic input, a logic output, a register table address, and an output logic value are each a binary (1 bit) signal has been shown, but these are not limited to a binary (1 bit) signal. .

  That is, a part or all of the logic inputs can be a multi-bit signal, and the data stored at the address of the register table is the same. Similarly, a part or all of the storage data of the output logic value of the register table can be made into data of a plurality of bits.

  FIG. 10 is a diagram showing the configuration of the fourth exemplary embodiment of the present invention. FIG. 10A shows an arbitrary number of logical inputs (k) and logical outputs (n). The address 3-14 (A1, A2,...) And the output logical value 3-15 (D1) of the register table 3-13. , D2,...) Is an example of the configuration of the memory logic means 3-1 having an arbitrary number of bits. The logic inputs 1 to k are input with at least a logic signal indicating a communication system, a logic signal indicating a used frequency band, and a logic signal indicating an operation state of the communication terminal.

  By setting the logical inputs 1 to k to a plurality of bits, for example, in addition to two types of WCDMA (Wideband Code Division Multiple Access) and GSM (Global System for Mobile Communications), a logical input indicating a communication system includes CDMA (Code Division Multiple types (Multiple Access) 2000, LTE (Long Term Evolution), etc. can be included.

  In addition to opening and closing folding of the hinged housing, the logic input indicating the operation state of the mobile terminal is also used to operate the sliding state of the housing having a sliding mechanism, the biaxial structure of opening and closing and rotation of the housing, the side opening and closing structure, etc. Three or more types can be included, such as status, presence / absence of digital television (DTV) viewing, operation status such as implementation / non-execution of wireless communication such as WLAN (Wireless LAN) and Bluetooth.

  The antenna impedance and the like correlate with the operation state of the user's terminal holding state, usage state, and other wireless communication implementation / non-execution. In particular, as in the open state of the folding housing and the slide housing of the mobile phone terminal, since the user is in the handheld state in the TV viewing operation state, the logic is determined according to the logical input of the operation state. Controllable circuits such as an antenna and a matching switching circuit can be appropriately controlled by the automatic storage means.

  The logical input indicating the used frequency band can also be a band I to XIV (1 to 14) indicated by 3GPP, and can include three or more frequency bands.

  The register table 3-13 can be configured to store stored data in a fixed manner according to the signal format of logic input and / or logic output, and can be configured to be rewritable from the outside by a rewrite input c.

  FIG. 10B shows a configuration example for serializing the output format of the logical output of the logical storage means 3-1. In order to control the control signal input terminal on the controlled side with a small number of terminals, when it is necessary to input a serial signal (a signal of a serial control specification such as a switch), it is parallel to the logical storage means 3-1. / Serial conversion circuit 3-20 (S / P conversion circuit), etc. are provided, and parallel output logic values are serialized and output for some or all of the corresponding logic outputs i. Similar to the rewriting of the stored data of the address 3-18 of the register table 3-17 and the output logical value 3-19 by the rewriting input c, the serial output can be changed by the rewriting input c.

(Fifth embodiment)
Although an example in which the register table of the memory logic means of the present invention has a single table configuration has been shown, it is possible to have a combined configuration of a plurality of tables and the like.

  FIG. 11 is a diagram showing the configuration of the fifth exemplary embodiment of the present invention. The register table of the logical storage means 4-1 is divided into a preceding stage and a subsequent stage, and the former stage is configured as a logic generation table (logic generation circuit) 4-5 to generate a typical logic output of a specific manufacturer's specification. As the logic conversion table 4-6, the logic output is converted to generate a logic output of other specifications. In the present embodiment, only the subsequent logical conversion table 4-6 can be configured to be rewritable.

  For example, the former stage is configured as a logic generation table 4-5 that outputs 4-bit logic outputs A, B, C, and D conforming to the specifications of a specific manufacturer and conforming to the controlled custom product of the same specification, and the latter stage is logical As the conversion table 4-6, the logic outputs A, B, C, and D are converted into the controlled-side logic outputs a, b, and c and the logic outputs e and d, which are existing products different from the same specification.

  This makes it possible to match the logic of the custom product as well as the logic of the existing product. For all routes that do not have the same characteristics, the route is optimized for transmission and reception of each used frequency band. It is possible to switch the antenna switch and further switch the matching circuit.

  FIG. 12 is a diagram illustrating the relationship between the logical outputs of the fifth embodiment. As shown in FIG. 12A, the logic generation table 4-5 includes 2-bit logic outputs A and B related to the RF paths 1 to 4 and 2 bits related to the RF paths 5 to 8 according to the specification of a specific manufacturer. A 4-bit logic output A, B, C, D consisting of logic outputs C, D is output. Further, the logical conversion table 4-6 performs logical conversion on the 4-bit logical outputs A, B, C, and D, and as shown in FIGS. 12B and 12C, the RF path 1 is different from the specification of the specific manufacturer. Are output 3-bit logic signals a, b, c related to .about.8 and 2-bit logic signals d, e related to matching circuits Z1-Z4.

  The logical storage means 4-1 can be configured to output the logic outputs A, B, C, and D in addition to the logic signals a, b, and c and the logic signals d and e. The logic outputs A, B, C, and D may be output from the logic generation table 4-5 or output from the logic conversion table 4-6 by rewriting the logic conversion table (register table). You can also.

  The logic outputs A, B, C, and D are, for example, 4-bit control signals in which the logic outputs A and B are 2 bits of the WCDMA system and the logic outputs C and D are 2 bits of the GSM system, and the RF path The control signal can cover 8 transmission / reception frequency bands.

(Sixth embodiment)
The example of the antenna switch and the matching switching circuit has been described above as the controlled circuit. However, the present invention is applicable to control of any controlled circuit other than the antenna switch and the matching switching circuit.

  FIG. 13 is a diagram showing the configuration of the sixth exemplary embodiment of the present invention. In a control example in which when there is a wireless system 5-8 close to the use frequency band arranged adjacently, the wireless system 5-8 is protected from high-power radio waves output from the antenna of the mobile phone terminal. is there. For example, DTV (Digital Television), WLAN (Wireless LAN), Bluetooth, etc. can be targeted as the wireless system 5-8 of the mobile phone terminal.

  A protection circuit 5-9 configured by a high frequency switch or the like is provided in a transmission / reception system of another mounted wireless system 5-8, and the operation of the protection circuit 5-9 is performed from the logical storage unit 5-1 of the RFIC 5-14. An ON / OFF control signal is output. In this example, the first input means 5-2 to the third input means 5-4 of the logical storage means 5-1 are supplied with logical inputs from the CPU (or digital baseband DBB) 5-7 to generate logic. An ON / OFF control signal for controlling the protection circuit 5-9 is output in addition to a logic output for controlling the antenna switch 5-10 and the matching switching circuit 5-11 via the table 5-5 and the logic conversion table 5-6. . In order to prevent the radio signal radiated from the antenna of the mobile phone terminal from affecting the radio system 5-8 by this ON / OFF control signal, the protection circuit 5- 9 is turned off to protect the wireless system 5-8.

(Seventh embodiment)
FIG. 14 is a diagram showing the configuration of the seventh exemplary embodiment of the present invention. In the present embodiment, a filter 6-10 is installed at the antenna end, and noise caused by the filter 6-10 is removed from the logical storage means 6-1 of the RFIC 6-14 in order to avoid noise generated by other digital systems. It is an example which outputs the control signal which controls the setting of a filter. In this example as well, logic input is supplied from the CPU (or digital baseband) 6-7 to the first input means 6-2 to the third input means 6-4 of the logical storage means 6-1 to generate logic. In addition to the logic output for controlling the antenna switch 6-8 and the matching switching circuit 6-9 via the table 6-5 and the logic conversion table 6-6, ON / OFF of the filter function for removing noise for the filter 6-10 and The control signal for controlling the frequency setting for suppressing the noise, that is, the setting of the filter for removing the noise is output, and the noise input from another digital system or the like is removed.

(Other embodiments)
In the sixth and seventh embodiments, the example in which the logical storage means is configured by the logic generation table and the logic conversion table has been described. However, it can be configured by the same register table as in the second to fourth embodiments. Needless to say.

  In addition, although an example in which the control circuit including the logical storage unit is built in the RFIC is shown, the control circuit of the present invention can be configured to be built in the CPU (or digital baseband) or the like. .

  Embodiments of the present invention are not limited to the above-described embodiments, and various modifications can be made without departing from the scope of the present invention.

It is a figure which shows the structure of the 1st Embodiment of this invention, (a) is a control circuit of a communication terminal, (b) is the control method of a communication terminal. It is a figure which shows the structure of the 2nd Embodiment of this invention. It is a flowchart which shows operation | movement of 2nd Embodiment. It is a figure which shows an example provided with the controlled circuit of a different specification of 2nd Embodiment. It is a figure which shows the example provided with the controlled circuit of a further different specification of 2nd Embodiment. It is a figure which shows the control signal output to the controlled circuit of a different specification from a control circuit. It is a figure which shows the control signal output to the controlled circuit of a further different specification from a control circuit. It is a figure which shows the structure of the 3rd Embodiment of this invention. It is a figure which shows the memory | storage data of the register table 3-5 of 3rd Embodiment. It is a figure which shows the structure of the 4th Embodiment of this invention. It is a figure which shows the structure of the 5th Embodiment of this invention. It is a figure which shows the relationship of each logic output of 5th Embodiment. It is a figure which shows the structure of the 6th Embodiment of this invention. It is a figure which shows the structure of the 7th Embodiment of this invention.

Explanation of symbols

1-1 to 6-1 Logical storage means 1-2 to 6-2 First input means 1-3 to 6-3 Second input means 1-4 to 6-4 Third input means 1-5 Logic output means 2-5, 3-5 Register table 2-6, 3-6 Address (input logic value)
2-7, 3-7 Output logical value 2-8 First output means 2-9 Second output means 2-10, 2-12, 3-10, 5-10, 6-8 Antenna switch 2-11 2-13, 3-11, 5-11, 6-9 Matching changeover switch 2-13 Matching changeover circuit 2-14, 3-14, 5-14, 6-14 RFIC
2-15, 2-16 Controlled circuit 4-5, 5-5, 6-5 Logic generation table (logic generation circuit)
4-6, 5-6, 6-6 Logic conversion tables 5-7, 6-7 Digital baseband circuit (CPU)
5-8 Other wireless system 5-9 Protection circuit 6-10 Filter

Claims (30)

A communication terminal control circuit that supports a plurality of communication systems and adapts to a plurality of frequency bands, at least a logic signal input unit indicating a communication system, and a logic signal input unit indicating a use frequency band; Logic signal input means for indicating the operation state of the communication terminal, logic signal indicating the communication system, logic signal indicating the used frequency band, and logic value stored in consideration of the logic signal indicating the operation state of the communication terminal A control circuit for a communication terminal, characterized by comprising logical storage means comprising output means for outputting. The logical storage means includes an input means for writing a logical value taking into account a logical signal indicating the communication system, a logical signal indicating the used frequency band, and a logical signal indicating an operation state of the communication terminal as storage contents. The communication terminal control circuit according to claim 1, wherein the stored contents can be rewritten. The logical storage means corresponds to an input logical value indicating a combination of a logical signal indicating the communication system, a logical signal indicating an operation state of the communication terminal, and a logical signal indicating the used frequency band, and the input logical value. 3. The communication terminal control circuit according to claim 1, further comprising a register table storing output logical values output by the output means. The register table includes a logic generation table storing a predetermined logic value corresponding to the input logic value, and a conversion table storing the output logic value corresponding to the predetermined logic value. Item 4. A communication terminal control circuit according to Item 3. The logical signal indicating the communication system is at least any two communication systems of WCDMA (Wideband Code Division Multiple Access), CDMA (Code Division Multiple Access) 2000, GSM (Global System for Mobile Communications), and LTE (Long Term Evolution). 5. The communication terminal control circuit according to claim 1, wherein the control signal is a logic signal indicating the following. 5. The communication terminal control circuit according to claim 1, wherein the logic signal indicating the operation state of the communication terminal is a logic signal indicating an open / close state of folding of the communication terminal. 5. The communication terminal control circuit according to claim 1, wherein the logic signal indicating the operation state of the communication terminal is a logic signal indicating a sliding state of the communication terminal. 5. The communication terminal control circuit according to claim 1, wherein the logic signal indicating the operation state of the communication terminal is a logic signal indicating whether or not the TV is viewed. 9. The communication terminal control circuit according to claim 1, wherein an output logic signal output from the output means is used for switching an antenna switch. 10. The control circuit for a communication terminal according to claim 1, wherein an output logic signal output from the output means is used for switching an antenna matching circuit. 10. The communication terminal control circuit according to claim 1, wherein the output logic signal output by the output means is used for control of a protection circuit for another adjacent wireless system. 12. The communication terminal control circuit according to claim 1, wherein the output logic signal output from the output means is used to control setting of a filter for removing noise. 13. The communication terminal control circuit according to claim 1, wherein the output logic signal output from the output means is a serial signal. The communication terminal control circuit according to claim 1, further comprising a plurality of output units that output the logical values. The communication terminal control circuit according to claim 1, wherein the communication terminal is a mobile phone terminal, and is configured in a high-frequency integrated circuit. A communication terminal control method that supports a plurality of communication systems and adapts to a plurality of frequency bands, and includes at least a logic signal indicating a communication system, a logic signal indicating a used frequency band, and an operation state of the communication terminal. Logical storage means for storing a logical value in consideration of the logical signal indicating the communication system, the logical signal indicating the used frequency band, and the logical signal indicating the operation state of the communication terminal. Referring to the communication terminal control method, the logic value is output as a control signal. The storage contents of the logical value in consideration of the logical signal indicating the communication system, the logical signal indicating the use frequency band, and the logical signal indicating the operation state of the communication terminal are written in advance from the input means of the logical storage means. The communication terminal control method according to claim 16, characterized in that: The logical storage means corresponds to an input logical value indicating a combination of a logical signal indicating the communication system, a logical signal indicating an operation state of the communication terminal, and a logical signal indicating the used frequency band, and the input logical value. 18. The communication terminal control method according to claim 16 or 17, further comprising a register table storing an output logical value output by the output means. The register table includes a logic generation table storing a predetermined logic value corresponding to the input logic value, and a conversion table storing the output logic value corresponding to the predetermined logic value. Item 19. A communication terminal control method according to Item 18. The logical signal indicating the communication system is at least any two communication systems of WCDMA (Wideband Code Division Multiple Access), CDMA (Code Division Multiple Access) 2000, GSM (Global System for Mobile Communications), and LTE (Long Term Evolution). 20. The method for controlling a communication terminal according to claim 16, wherein the communication signal is a logic signal indicating the following. 20. The communication terminal control method according to claim 16, wherein the logic signal indicating the operation state of the communication terminal is a logic signal indicating a folding open / close state of the communication terminal. 20. The communication terminal control method according to claim 16, wherein the logic signal indicating the operation state of the communication terminal is a logic signal indicating the sliding state of the communication terminal. 20. The communication terminal control method according to claim 16, wherein the logic signal indicating the operation state of the communication terminal is a logic signal indicating whether or not the TV is viewed. 24. The method of controlling a communication terminal according to claim 16, wherein an output logic signal output from the output means is used for switching an antenna switch. The communication terminal control method according to any one of claims 16 to 24, wherein an output logic signal output from the output means is used for switching an antenna matching circuit. 25. The communication terminal control method according to claim 16, wherein the output logic signal output from the output means is used for control of a protection circuit for another adjacent wireless system. 27. The method of controlling a communication terminal according to claim 16, wherein the output logic signal output by the output means is used for control of setting of a filter for removing noise. 28. The communication terminal control method according to claim 16, wherein the output logic signal output from the output means is a serial signal. 29. The communication terminal control method according to claim 16, further comprising a plurality of output means for outputting the logical values. 30. The communication terminal control method according to claim 16, wherein the communication terminal is a mobile phone terminal and is configured in a high-frequency integrated circuit.

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