JPH02126735A - Mobile radio set - Google Patents

Abstract

PURPOSE:To simplify the setting of an action level at the time of testing by rewriting the memory contents of a non-volatile memory concerning an action level in accordance with the key input of a key operating means. CONSTITUTION:When a transmitting power level is adjusted, first, a power meter (not shown in the figure) is connected instead of an antenna 17, and while the power meter is watched with the key operation of an operating part 1 in the carrier ON condition, the increase and decrease are executed, and the level is adjusted until it becomes a specified power level. Since a main CPU 5, each time designation is carried out from the operating part 1, writes the value designated to the gain control circuit of an E<2>PROM 6 and a power amplifier 18, the power level can be set without removing the cover of a mobile radio set main body.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to mobile radio equipment used in car telephones, mobile telephones, etc., and particularly relates to an improvement in an operation level setting method during testing.

[Prior Art] Usually, in a mobile radio device, transmission level, reception level, transmission power level, and R35I (Rcclvcd
Signal Strength Indlcator
) level must be set in advance as the operating level.

Note that the transmission level includes a transmission data level and a transmission voice level, and the reception level includes a reception data level and a reception voice level. These level settings are made in the test mode of the mobile radio.

Conventionally, as means for setting the level as described above, a variable resistor for adjustment is provided in the main body of a mobile radio device, and the level is set by adjusting the variable resistor.

[Problems to be Solved by the Invention] In recent years, various circuits have been made into LSIs, and the structures of mobile radio devices are also gradually becoming smaller. However, as mentioned above, the variable resistor provided in the main body of the mobile radio device cannot be expected to be miniaturized at present. For this reason, the variable resistor occupies a large proportion of mobile radio equipment, which is an obstacle to future miniaturization of mobile radio equipment. Additionally, in order to adjust the variable resistor, it is necessary to remove the cover of the mobile radio device.

On the other hand, the internal structure of mobile radios has become more complex as they have become smaller, and a new problem has arisen: people with special tools and skills are required to adjust the variable resistor. It is occurring in

The main technical problem of the present invention is to provide a mobile radio device whose operating level can be easily set during testing. The present invention also attempts to downsize the main body of a mobile radio.

[Means for Solving the Problems] The present invention provides a mobile radio device including a key operation means, a rewritable nonvolatile memory, and a processing means for controlling operations at the time of outgoing and incoming calls. Means for setting the operation level at the time of transmission and reception according to the stored contents, and means for sending a switch to the test mode to the processing means at the time of the test, and the processing means changes the test mode upon receiving the switching instruction. The present invention is characterized in that, in response to a key input from the key operation means, a function of rewriting the stored contents of the nonvolatile memory regarding the operation level is set to H.

The operation level setting means includes at least one of transmission level setting means, reception level setting means, R35I level setting means, and transmission power level setting means.

[Example] Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of an embodiment according to the present invention. In this figure, as a key operation means, an operation unit 1 is used which is equipped with dial keys of 0 to 9 and well-known function keys such as a send key (SND) and an end key (END). Further, as a storage means, an electrically rewritable non-volatile memory, for example E2FROM6, is used. Furthermore, E2 FRO
Transmission level, reception level, R3 according to the memory contents of M6
As a means for setting the 5I level and the transmission power level, a receiving D/A converter 8 which can be directly connected to the main CPU 5 by bus is used. D/A converter for R35I9. Transmission D/A
Converter 10. and a power amplifier 18, and the contents of the E" FROM 6 are written by the main CPU 5 when the power is turned on. In addition to the above control operations, the main CPU 5 also performs control operations when making and receiving calls. 4 is a test This is a test link to instruct switching to the mode.

In the above configuration, a normal transmission operation is performed as follows. First, the telephone number of the other party input from the operation unit 1 is encoded by the sub CPU 2 and sent to the bus BUS via the interface circuit 3. The main CPU 5 judges this content and creates transmission data,
Data is sent to the transmitting D/A converter 10. E2 FROM is installed in the transmitting D/A converter 10 in advance.
Among the stored contents of 6, there is a gain control circuit in which a level setting value for transmission data is written, and the transmission data according to the transmission level set by this gain control circuit is sent to the transmitter 15 as a modulation signal. The signal modulated by the transmitter 15 is sent to a power amplifier 18 . Duplexer 1
6. The signal is sent to the base station via the antenna 17.

In the incoming call operation, after the synthesizer 14 enters the standby state by the scanning operation, the antenna 17. Duplexer 16
The reception D/A converter 8 receives the reception signal sent from the reception section 13 through the reception D/A converter 8. The receiving D/A converter 8 has the following information stored in the E2 FROM 6 in advance:
There is a gain control circuit in which level setting values for received data are written. After the received data is decoded at a set level, it is sent to the main CPU 5 via the bus BUS.

A communication operation is performed using a speaker 11 and a microphone 12.

The transmitting audio signal input from the microphone 12 is sent to the transmitting D/A.
input to converter 10. Transmission D/A converter 1
0 has a gain control circuit in which the level setting value for the transmitting voice signal is written in advance from the contents of E2FROM6, and the transmitting voice signal having the transmitting voice level set by this gain control circuit is transmitted. The signal is sent to section 15 as a modulated signal. On the other hand, regarding the received audio signal,
A reception signal sent from the reception section 13 is input to the reception D/A converter 8. The reception D/A converter 8 has a gain control circuit in which a level setting value for received audio is written in advance from the memory contents of the E2 FROM 6, and the received audio signal with the received audio level set is sent to the speaker 11. Sent.

Scan operation is performed by synthesizer 14 and R85I D/A.
This is done with converter 9. After specifying a channel using the synthesizer 14, an RSSI signal is detected from the receiving section 13. The level of the RSSI signal varies depending on the mobile radio, so it must be adjusted. Therefore, the R85I D/A converter 9 has a circuit in which the level setting value for RSSI is written in advance from the memory contents of the E2FROM6.
The RSSI curve (electric field - voltage) is determined by this level setting value.
is adjusted. The adjusted R35I level is digitized by the A/D converter built into the R35I D/A converter and sent to the main CPU 5 via the bus.

The level of transmission power is adjusted by a power amplifier 18 with a transmission power adjustment function. This power amplifier 18 has a gain control circuit in which a level setting value for transmission power is written in advance from among the contents stored in the E2 FROM 6, and the transmission power is set by this gain control circuit and sent out.

Next, when testing the mobile radio, the test link 4 is first connected to the interface circuit 3.

Through this test link 4, the main CPU 5 detects that the test mode has been specified via the pass line, and
Operation section 1 moves from normal operation to test sequence.
Waiting for the signal to be tested from. Operation unit 1
As mentioned above, there are dial keys and operation keys for functions, but when placed in test mode, these keys can be changed to test-specific functions that are different from those used during normal operation. The memory contents of E2FROM6 include transmission and data reher setting values, level setting values for receiving data, level setting values for transmitting voice, level setting values for receiving voice, and R3.
There are level setting values for 5I and level setting values for transmission power, and the stored contents can be changed using the operation section 1.

- As an example, the case of adjusting the transmission power level is shown. First, a power meter (not shown) is connected in place of the antenna 17, and with the carrier ON, the power is increased or decreased by operating keys on the operation unit 1 while looking at the power meter until the power reaches a specified power level. The main CPU 5 writes the specified value to the E2FROM 6 and the gain control circuit of the power amplifier 18 every time a specification is received from the operation unit 1, so that the power level can be set without removing the cover of the mobile radio device body. Such a setting can be realized by using at least one of the dial key and the funk key on the operation unit 1, and by predetermining the key corresponding to the type of key level for level increase/decrease.

In FIG. 1, the portion surrounded by broken lines including each D/A converter is implemented as an IC, and can be significantly smaller than a conventional variable resistor.

[Effects of the Invention] As explained above, the present invention allows the operation level to be adjusted by pressing the keys on the key operation unit of the mobile radio, so that the mobile radio can be made smaller. It has the effect of being easy to adjust without having to remove it.

Margin below

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment according to the present invention. In the figure, 1... operation unit, 2... sub CPU, 3... interface circuit, 4... test link, 5... main CPU. 6...E2 PROM, 7...Interface circuit, 8...D/A converter for reception, 9...R85I
10... D/A converter for transmission, 18... Power amplifier with transmission power adjustment function. Diagram

Claims (1)

[Claims] 1. A mobile radio device including a key operation means, a rewritable non-volatile memory, and a processing means for controlling operations at the time of outgoing and incoming calls, according to the contents stored in the non-volatile memory. Means for setting an operation level at the time of outgoing and incoming calls, and means for instructing the processing means to switch to a test mode during a test, and the processing means, upon receiving the switching instruction, shifts to the test mode sequence. . A mobile radio device having a function of rewriting the storage contents of the nonvolatile memory regarding the operation level in response to a key input from the key operation means. 2. The operation level setting means includes transmission level setting means;
2. The mobile radio device according to claim 1, further comprising at least one of reception level setting means, RSSI level setting means, and transmission power level setting means.