JP3127739B2 - Mobile phone equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to a cellular type mobile telephone system and the like. A mobile telephone is equipped with an external expansion box using a ROM and a digital signal processor (DSP) to check a reception state. The present invention relates to a mobile telephone device that performs a decoding process in consideration of the above.

[0002]

2. Description of the Related Art FIG. 4 is a block diagram showing a configuration of a receiving section in a conventional mobile telephone device. In FIG. 4, the mobile phone receiving unit includes an antenna 1 for transmitting and receiving.
And a high frequency (RF) unit 2 for converting a signal received from the antenna 1 into an intermediate frequency band (IF) signal. Further, R
A detection unit 3 for extracting a detection signal (baseband signal) obtained by quadrature detection from the IF signal output from the F unit 2, a decoding unit 4 for decoding the baseband signal from the detection unit 3,
A codec unit 5 that converts a digital decoded signal from the decoding unit 4 into an analog audio signal and a speaker 6 that outputs an analog audio signal from the codec unit 5 as audio are provided.

[0003] The operation of the receiving section of the mobile telephone device configured as described above will be described below. A signal received from the antenna 1 is converted into an IF signal by the RF unit 2. The IF signal is converted into a baseband signal by the detector 3 and output to the decoder 4. The decoding unit 4 demodulates and decodes the digital baseband signal, and the codec unit 5 converts it into an analog audio signal. Codec section 5
Is output from the speaker 6 as an audio signal.

As described above, in the receiving section of the above-mentioned conventional mobile telephone apparatus, the decoding section 4 decodes the baseband signal, and the analog audio signal converted by the codec section 5 is output from the speaker 6.

[0005]

However, in the conventional mobile telephone device, since the decoding process is performed by one decoding unit 4, it cannot cope with various reception states. For example, even in a mountainous area, a highway or an urban area with many buildings, even when the radio wave propagation states are different, it is not possible to select appropriate decoding corresponding to the multipath and fading, so that stable and stable There is a disadvantage that a high-quality reception state cannot be obtained.

The present invention solves such a conventional problem, and enables decoding processing suitable for various reception conditions, thereby enabling high-quality reception without deteriorating reception performance. An object of the present invention is to provide an excellent mobile telephone device.

[0007]

According to a first aspect of the present invention, there is provided a mobile telephone apparatus for performing a decoding process in consideration of a reception state by an extension box attached to the mobile telephone. A mobile phone, a reception processing means for outputting a reception signal obtained by processing a reception radio wave, a detection means for outputting a detection signal obtained by detecting a reception signal from the reception processing means, and a decoding means for decoding a detection signal from the detection means. , Connected to the decoding means, having a main body side connection means provided in the device for receiving decoding processing data for performing the decoding processing by the decoding means, and in the extension box, in the main body side connection means External connection means for attachment / detachment, connected to the external connection means, and when the expansion box is attached to the mobile telephone, the decoding means changes to a decoding processing state taking into account the reception state. A configuration including a storage means for sending the order of decoding processing for data.

According to a second aspect of the present invention, there is provided a mobile telephone apparatus for performing a decoding process in consideration of a reception state by an extension box attached to the mobile telephone, and outputs a reception signal obtained by processing a received radio wave to the mobile telephone. Receiving processing means;
Detection means for outputting a detection signal obtained by detecting the reception signal from the reception processing means, decoding means for decoding the detection signal from the detection means, and detection for performing the decoding processing in the extension box instead of the decoding processing of the decoding means. The detection signal from the means is output to the outside, and, the main body side connection means for receiving the decoded signal from the expansion box, and a codec means for converting the decoded signal from the main body side connection means to an analog signal,
The expansion box further includes an external connection means for attaching and detaching to and from the main body connection means, and a decoding means for decoding a detection signal from the external connection means, and transmitting the detected signal to the codec means through the external connection means. It is a configuration provided.

According to a third aspect of the present invention, there is provided a mobile telephone apparatus for performing a decoding process in consideration of a reception state by an extension box mounted on the mobile telephone, and outputs a reception signal obtained by processing a received radio wave to the mobile telephone. Receiving processing means;
Detection means for outputting a detection signal obtained by detecting the reception signal from the reception processing means, decoding means for decoding the detection signal from the detection means, and detection for performing the decoding processing in the extension box instead of the decoding processing of the decoding means. Means for outputting a detection signal from the means to the outside and receiving a decoded signal from the extension box; and a first external means for attaching and detaching the extension box to and from the body-side connection means. Side connection means, decoding means for decoding the detected signal from the first external connection means and sending it to the mobile telephone through the external connection means, and second external connection connected to the decoding means Means for transmitting decoding processing data for changing to a decoding processing state in consideration of a reception state when the decoding means performs the decoding processing in the second external connection means. It is a configuration and a stage.

The mobile telephone device according to a fourth aspect of the present invention is configured such that a ROM is used as the storage means and a digital signal processor is used as the decoding means.

According to a fifth aspect of the present invention, the mobile telephone device has a structure in which detachable connectors are used as the main body side connection means and the external side connection means.

[0012]

With this configuration, the mobile telephone device according to the first, fourth, and fifth aspects changes the decoding processing state in consideration of the reception state when performing the decoding processing from the received signal obtained by processing the received radio wave. Therefore, an extension box for transmitting the decoding processing data from the ROM is connected by a connector. The decoding process data performs a decoding process appropriately corresponding to the change in the reception state. For example, when the mobile telephone device is mounted on a car and travels, the reception state is in a mountainous area, an expressway or an urban area with many buildings, and the like.
It changes with fading and multiple radio wave propagation (malpass). That is, in an urban area, the electric field strength in a wireless line with a cell base station in a cellular telephone system or the like is strong, and the reflected light from a building causes multiple radio waves to propagate, and the fading tends to be short. Also,
In a mountainous area, the electric field strength is weak and fading tends to be long. On an expressway, the movement is fast, and the wireless line connection with the cell base station is frequently switched. Appropriate decoding processing corresponding to such a change in the reception state is performed. Accordingly, decoding processing suitable for various reception states (radio wave propagation states) can be performed, and high-quality reception can be performed without deteriorating reception performance.

According to a second aspect of the present invention, there is provided a mobile telephone device comprising:
The expansion box is connected to the mobile telephone by a connector. At this time, instead of the decoding process of the decoding means itself, the digital signal processor in the extension box performs a decoding process appropriately corresponding to a change in the current reception state. In this case, a decoding process suitable for various reception states (radio wave propagation states) can be performed in the same manner as the above-described claim 1, and more various decoding processes can be performed by one expansion box (digital signal processor). Become.

In the mobile telephone device according to the present invention, the extension box is connected to the mobile telephone by a connector. When the decoding unit performs the decoding process through this connection, the digital signal processor in the expansion box performs the decoding process appropriately corresponding to the current change in the reception state, instead of the decoding process of the decoding unit itself. Further, the ROM is connected to the extension box by a connector. From this ROM, decoding processing data is sent to the digital signal processor in order to change the decoding processing state in consideration of the receiving state. In this case, the same processing as in the above-described claim 2 can be performed, and more various decoding processing can be performed by one expansion box (digital zignal processor).
A variety of decoding processes are enabled by the decoding process data from.

[0015]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a mobile telephone device according to the present invention.

FIG. 1 is a block diagram showing a configuration of a mobile telephone device according to a first embodiment of the present invention. In FIG.
This example is a receiving section of a mobile phone used in a cellular type mobile phone system, and an antenna 1 for transmitting and receiving.
1 and a high frequency (RF) unit 12 having a high frequency amplifier circuit, a frequency conversion circuit, and the like, and converting a received signal from the antenna 11 to an intermediate frequency band (IF) signal. Further, a detection unit 13 for orthogonally detecting the IF signal output from the RF unit 12 and extracting a baseband signal, and a detection unit 13
And a decoding unit 14 for decoding the baseband signal from. Also, a codec unit 15 that converts a digital decoded signal from the decoding unit 14 into an analog audio signal, a speaker 16 that outputs an analog audio signal from the codec unit 15 as audio, and an input / output terminal of the decoding unit 14 are connected. A connector 20 is provided. In addition, connector 2
Program ROM (expansion box) 2 mounted on
1, 22, and 23. Program ROM 21 to
23 stores different programs,
The decoding unit 14 performs an arithmetic process using any one of the program instruction codes (decoding processing data) in the program ROMs 21 to 23 as described in detail below. The program ROMs 21 to 23 are covered with a resin outer package, and are provided with a connector that is detachably attached to the connector 20 and electrically connected to the internal ROM.

Next, the operation of the first embodiment will be described. The received signal from the antenna 11
Converted to a signal. The IF signal is converted into a baseband signal by the detection unit 13 and output to the decoding unit 14.
The decoding unit 14 decodes the digital baseband signal, and the codec unit 15 converts it into an analog audio signal.
The analog audio signal from the codec unit 15 is transmitted to the speaker 1
6 outputs a voice.

In this operation, the decryption unit 14 executes the program R
The decryption process is performed using any one of the program operation codes OM21 to OM23. That is, the user selects one of the program ROMs 21 to 23 and attaches it to the connector 20 in consideration of a change in the current reception state. This program RO
Different program operation codes are stored in M21 to M23, and when attached to one of the connectors 20 of the program ROMs 21 to 23, the decoding unit 14 sends a clock signal to the program ROMs 21 to 23 and To 23, and executes the decoding process. The program ROMs 21 to 23 store, for example, program operation codes corresponding to changes in the reception state.
The change in the reception state in this case is a difference in the radio wave propagation state between the respective areas, such as a mountainous area, an expressway, or an urban area with many buildings. For example, in an urban area, the electric field strength of a radio wave of a radio line with a cell base station or the like is strong, and the electric wave is reflected by a building to cause multiple radio wave propagation (multipath), and the fading tends to be short. Also, the electric field intensity is weak in the mountainous part, and the fading tends to be long. On an expressway, the mobile phone that is receiving the mobile phone moves fast, and the cell base station in the cellular mobile phone system is frequently switched. The decoding unit 14 executes a decoding process corresponding to such a change in the reception state.

Therefore, in the first embodiment, the program operation code for decoding can be appropriately changed in response to the change in the reception state. That is, the program ROM 2
The user selects 1 to 23 and attaches it to the connector 20 of the cellular phone receiver shown in FIG. In this case, only the mounting is sufficient, the operation is easy, and the program ROM
Since 21 to 23 are externally attached, four or more program ROMs corresponding to various kinds of changes in the reception state can be used, and the version can be easily upgraded. FIG. 2 is a block diagram showing the configuration of the second embodiment.

The receiving section of the mobile phone according to the second embodiment has the same configuration as that of the first embodiment shown in FIG. That is, the antenna 11, the RF unit 12, the detection unit 13, the decoding unit 14, the codec unit 15, the speaker 16, and the connector 2
0 is provided. Further, in the second embodiment, an extension box 25 to be attached to the connector 20 is provided instead of the program ROMs 21 to 23 of the first embodiment.
The expansion box 25 includes a connector 26 for attaching and detaching to and from the connector 20 and a digital signal processor (DSP) 27 connected to the connector 26 and performing a decoding process in consideration of a reception state, instead of the decoding unit 14. ing.

Next, the operation of the second embodiment will be described. The received signal from the antenna 11
Converted to a signal. The IF signal is converted into a baseband signal by the detection unit 13 and output to the decoding unit 14.
The decoding unit 14 demodulates and decodes the digital baseband signal, and the codec unit 15 converts it into an analog audio signal. An analog audio signal from the codec unit 15 is output as audio from the speaker 16.

In this operation, when the extension box 25 is not attached to the connector 20, the decryption processing is performed by the decryption unit 14 itself. When the extension box 25 is attached to the connector 20, the decoding unit 14 supplies a clock signal to the DSP 27 built in the extension box 25 through the connectors 20 and 26, and the DSP 27 performs a decoding process. The user attaches the extension box 25 to the connector 20 in consideration of a change in the current reception state. The DSP 27 of the extension box 25 performs various kinds of decoding processing corresponding to the change in the reception state, as in the first embodiment.

Therefore, in the second embodiment, similar to the first embodiment, it is possible to perform appropriate decoding arithmetic processing corresponding to a change in the reception state, and to use a DSP. Decoding processing corresponding to a high-level change in the reception state can be performed with only one extension box 25.
Further, it is only necessary to attach the extension box 25 to the connector 20 of the mobile phone receiving unit, and the operation is easy.

FIG. 3 is a block diagram showing the configuration of the third embodiment. The mobile phone receiving unit in the third embodiment includes:
The configuration is the same as that of the first and second embodiments shown in FIGS. That is, the antenna 11, the RF unit 12, the detection unit 1
3, a decoding unit 14, a codec unit 15, a speaker 16 and a connector 20 are provided. Further, in the third embodiment, the extension box 30 and the program ROMs 34, 3
5, 36. The expansion box 30 has a connector 31 for attaching and detaching to and from the connector 20 and a program RO.
A connector 33 to which M34 to M36 are attached is provided. Further, a decoding process similar to that performed by the decoding unit 14 is performed between the connector 31 and the connector 33 of the extension box 30.
SP32 is connected. Program ROM 34-3
Reference numeral 6 denotes a connector which is covered with a resin outer package and is provided with a connector which is detachably attached to the connector 33 of the expansion box 30 and which is electrically connected to the internal ROM.

Next, the operation of the third embodiment will be described. The received signal from the antenna 11
Converted to a signal. The IF signal is converted into a baseband signal by the detection unit 13 and output to the decoding unit 14.
The decoding unit 14 decodes the digital baseband signal, and the codec unit 15 converts it into an analog audio signal.
The analog audio signal from the codec unit 15 is transmitted to the speaker 1
6 outputs a voice.

In this operation, when the extension box 30 is not attached to the connector 20, the decoding process is performed by the decoding unit 14 itself. When the extension box 30 is attached to the connector 20, the decoding unit 14
The clock signal is supplied to the DSP 32 built in the extension box 30 through the DSP 30, and the DSP 32 performs a decoding process in place of the decoding unit 14. Further, the user attaches any one of the program ROMs 34 to 36 to the connector 33 of the extension box 30 in consideration of a change in the current reception state. The DSP 32 further performs a decoding process in consideration of a change in the reception state based on a program operation code in one of the program ROMs 34 to 36 attached to the connector 33.

Therefore, in the third embodiment, similarly to the first and second embodiments, it is possible to appropriately perform the processing using the decoding program operation code in response to the change in the reception state, and to execute the DSP 32 And program ROMs 34 to 3
6 can be used, and the decoding process enables various and sophisticated decoding processes corresponding to more complicated changes in the reception state. Further, the extension box 30 is attached to the connector 20 of the cellular phone receiver, and the extension box 3
It is only necessary to attach the program ROMs 34 to 36 to the 0 connector 33, and the operation is easy.

In the second and third embodiments, the DSP
Although 27 and 32 are used, a microcomputer having a program for performing a decoding process may be used instead of the DSP.

[0029]

As is apparent from the above description, according to the mobile telephone device of the first, fourth, and fifth aspects, when decoding processing is performed on a reception signal obtained by processing a reception radio wave, the reception state is considered. The expansion box that sends out the decoding processing data from the ROM in order to change to the decoding processing state is connected by a connector, and the decoding processing data from here performs the decoding processing appropriately corresponding to the change in the reception state.
Decoding processing suitable for various reception states (radio wave propagation states) becomes possible, and high-quality reception becomes possible without deteriorating reception performance.

According to the mobile telephone device of the present invention, the extension box is connected to the mobile telephone by the connector, and the digital signal processor in the extension box replaces the decryption processing of the decryption means itself. In order to perform a decoding process appropriately corresponding to a change in the current reception state, it is possible to perform a decoding process suitable for various reception states (radio wave propagation states) in the same manner as in the above-described claim 1, and to use one expansion box (digital Signal processor) to perform more various decoding processes.

In the mobile telephone device according to the third to fifth aspects, the digital signal processor in the extension box performs a decoding process appropriately corresponding to a change in the current reception state, instead of the decoding process of the decoding means itself. . In addition, R
The OM is connected by a connector, and the data for decoding processing is sent from the ROM to the digital signal processor in order to change to the decoding processing state in consideration of the reception state. Thus, there is an effect that more various decoding processes can be performed by one expansion box (digital signal processor), and various decoding processes can be performed by the decoding process data from the ROM.

[Brief description of the drawings]

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

FIG. 2 is a block diagram showing a configuration of a second embodiment.

FIG. 3 is a block diagram showing a configuration of a third embodiment.

FIG. 4 is a block diagram showing a configuration of a receiving unit in a conventional mobile telephone device.

[Explanation of symbols]

 Reference Signs List 12 RF unit 13 Detection unit 14 Decoding unit 15 Codec unit 16 Speaker 20, 26, 31, 33 Connector 21 to 23, 34 to 36 Program ROM 25, 30 Expansion box 27, 32 DSP

Claims (5)

(57) [Claims] 1. A mobile telephone device for performing a decoding process in consideration of a reception state by an extension box mounted on a mobile telephone, a reception processing means for outputting a reception signal obtained by processing a received radio wave to the mobile telephone, Detection means for outputting a detection signal obtained by detecting a reception signal from the processing means, decoding means for decoding the detection signal from the detection means, and connection to the decoding means for the decoding means to perform a decoding process. External connection means for attaching and detaching the expansion box to and from the main body connection means, comprising: main body connection means provided in the apparatus for receiving decryption processing data; and connection to the external connection means. Then, when the extension box is attached to the mobile telephone, the decoding means sends out decoding processing data for changing to a decoding processing state in consideration of a reception state. Mobile telephone device comprising: 2. A mobile telephone device for performing a decoding process in consideration of a reception state by an extension box mounted on a mobile telephone, a reception processing means for outputting a reception signal obtained by processing a received radio wave to the mobile telephone, A detection unit that outputs a detection signal obtained by detecting a reception signal from the processing unit, a decoding unit that decodes a detection signal from the detection unit, and a decoding process that is performed by the extension box instead of the decoding process of the decoding unit. A main body side connection means for outputting a detection signal from the detection means to the outside, and receiving a decoded signal from the extension box; and a codec means for converting the decoded signal from the main body side connection means into an analog signal. And an external connection means for attaching / detaching to / from the main body side connection means on the extension box, and decoding a detection signal from the external connection means. A mobile telephone device, comprising: decoding means for processing and transmitting to the codec means through the external connection means. 3. A mobile telephone device for performing a decoding process in consideration of a reception state by an extension box mounted on a mobile telephone, a reception processing means for outputting a reception signal obtained by processing a received radio wave to the mobile telephone, A detection unit that outputs a detection signal obtained by detecting a reception signal from the processing unit, a decoding unit that decodes a detection signal from the detection unit, and a decoding process that is performed by the extension box instead of the decoding process of the decoding unit. And a main body side connection means for outputting a detection signal from the detection means to the outside and receiving a decoded signal from the extension box, and detachably attached to the main body side connection means on the extension box. External connection means for decoding the detection signal from the first external connection means, and transmitting the decoded signal to the mobile telephone through the external connection means. Decoding means, and second external connection means connected to the decoding means are provided, and when the decoding means performs decoding processing on the second external connection means, the reception state is changed. Storage means for transmitting decoding processing data for changing to a decoding processing state considered. 4. The mobile telephone device according to claim 1, wherein a ROM is used as said storage means, and a digital signal processor is used as said decoding means. 5. The mobile telephone device according to claim 1, wherein detachable connectors are used as said main body side connection means and external side connection means.