JPH03211925A - Portable radio equipment - Google Patents

Abstract

PURPOSE:To generate a message without adding an LSI for sound synthesization, etc., and to miniaturize a portable radio equipment saving the power by storing the encoded data of the sound message into a microcomputer in advance, and decoding the encoded data from a digital signal processor to process transmitted/received signals or from the microcomputer. CONSTITUTION:A microcomputer 11 to execute the control of the entire compact radio equipment stores the encoded data for generating the sound message in advance and when a sound message output instruction is inputted from an external part, the encoded data of the sound message are sent out by a serial data FRT. Then, a digital signal processor 14 to process the transmitted/received signals decodes the encoded data from the microcomputer 11. Thus, the sound message can be generated without adding the LSI for sound synthesization, etc., the radio equipment can be made compact and the power can be saved.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a portable radio device used as a land mobile radio device or the like.

2. Description of the Related Art In general, this type of portable wireless device is equipped with a circuit that generates voice messages, and is configured to notify the user of the state of use, how to use the device, etc. by voice.

FIG. 2 shows the configuration of a voice message generation circuit of this type of portable radio device.

In FIG. 2, 1 is a microcomputer that controls the entire portable radio device, and 2 is a digital device that processes a received digital audio signal and outputs a signal SD, or processes a digital audio signal RD for transmission. A signal processing processor (DSP) 3 performs D/A conversion on the received digital audio signal SD processed by the DSP 2, and A/D converts the transmitted analog signal into a digital audio signal RD.
PCM codec (CODEC) that outputs to DSP2, etc.
).

4 is a voice synthesis LSI that stores voice data for generating voice messages in advance and synthesizes the voice using the PARCOR method, for example; 5 is a reception device that is converted into an analog signal by a PCM codec 3 under the control of the microcomputer 1; a switching circuit that switches and selectively outputs the voice and the voice message synthesized by the voice synthesis LSI 4; 6 is an amplifier that amplifies the output voice signal of the switching circuit 5;
7 is a speaker that reproduces the audio signal amplified by the amplifier 6.

In the above conventional example, the speech synthesis LSI 4 synthesizes a speech message under the control of the microcomputer 1,
It is output via the switching circuit 9, amplifier 6, and speaker 7.

In this case, the PARCOR method has a high compression rate of information, although the quality of the voice deteriorates to some extent, so by adding the voice synthesis LSI 4 and its peripheral circuits, it is possible to generate many types of voice messages. Furthermore, the portable radio device can be made smaller compared to the case where messages are notified by a display.

Problems to be Solved by the Invention However, in the above-mentioned conventional portable radio device, peripheral circuits such as the voice synthesis LSI 4 and the switching circuit 5 are added, so there are problems in that the device becomes larger and the battery is consumed.

The present invention solves the above-mentioned conventional problems, and aims to provide a portable wireless device that can be miniaturized and consume less power.

Means for Solving the Problems In order to achieve the above object, the present invention stores encoded data of a voice message in a microcomputer in advance, and a digital signal processing processor that processes transmitted and received signals receives the encoded data from the microcomputer. It is designed to be decrypted.

Effect of the Invention With the above-described configuration, the present invention can generate a voice message without adding a voice synthesis LSI or the like, and therefore can achieve downsizing and power saving.

EXAMPLES Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a portable wireless device according to the present invention.

In FIG. 1, numeral 11 is a microcomputer that controls the entire portable radio device, and the microcomputer 11 stores in advance encoded data for generating voice messages.

12 is an R that converts a high frequency reception signal from a base station (not shown) into a baseband signal (reception signal RX), converts a baseband transmission signal (TX) into a high frequency signal, etc.
The F unit 13 demodulates the received signal RX from the RF unit 12 and outputs the digital audio signal RD, modulates the transmitted digital audio signal SD and outputs the modulated transmission signal TX to the RF unit 1.
It is a modem (MODEM) that outputs to 2.

14 is a digital unit that processes the digital audio signal RD from the modem 13, processes the transmitted digital audio signal and outputs the digital audio signal SD to the modem 13, and processes encoded data of the audio message as described later. The signal processing processor (DSP) 15.16 is a read only memory (ROM) and a random access memory (RAM) for instructions and data of the DSPI2, respectively.

17 is a PCM codec (C
ODEC), 18 is D/D by PCM codec 17.
An amplifier that amplifies the A-converted analog audio signal, 19
is a speaker that reproduces the audio signal amplified by the amplifier 18.

Next, the operation of the above embodiment will be explained.

In FIG. 1, when a voice message output command is input from the outside, the microcomputer 11 interrupts the DSP 14 with parallel data po~15, and then outputs the encoded data of the voice message to the DS as serial data FRT.
Send to P14.

In response to an interrupt signal from the microcomputer 11, the DSP 14 takes in the encoded data of the voice message from the microcomputer 11 frame by frame into an internal serial data buffer, and stores it in the ROM 15 and RAMI in the same way as when processing a normal received signal. 6 to perform decoding processing and return it to a sample data string.

This data string is D/A converted by the PCM codec 17, amplified by the amplifier 18, and reproduced by the speaker 19.

Therefore, according to the above embodiment, when the microcomputer 11 outputs the encoded data of the voice message to the DSP 14, the DSP 14 generates the voice message in the same way as it normally processes received signals. Voice messages can be generated without adding a synthesis LSI or the like, and miniaturization and power saving can be achieved.

Further, according to the above embodiment, since the encoded data of the voice message is decoded by the DSP 14, an encoding method with a higher information compression rate than the PARCOR method can be used. For example, 1 second of data at a bit rate of 8 Kbps can be Processing can be performed using a memory of about IK bytes, and the memory capacity can be further reduced by removing bits necessary for frame processing and error correction.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, the present invention stores encoded data of a voice message in a microcomputer in advance, and decodes the encoded data from the microcomputer or a digital signal processor that processes transmitted and received signals. Therefore, voice messages can be generated without adding a voice synthesis LSI, etc., and therefore, miniaturization and
Power saving can be achieved.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing an embodiment of a portable radio according to the present invention, and FIG. 2 is a block diagram showing main parts of a conventional portable radio. 11... Microcomputer, 14... Digital signal processor (DSP), 17... PCM codec (CODEC), 18... Amplifier, 19...
・Speaker.

Claims (1)

[Scope of Claims] A microcomputer that stores encoded data of voice messages in advance; a digital signal processing processor that processes transmitted and received signals and decodes encoded data from the microcomputer; and the digital signal processing processor. A portable radio device having means for converting a voice message decoded by a voice message into an analog signal and reproducing the same.