JPH08191254A - Fm multiplex broadcast receiver - Google Patents

Abstract

PURPOSE: To obtain an FM multiplex broadcast receiver provided with a voice synthesizer capable of changing the speaking speed of a voice-synthesized output in accordance with information, always securing the delimitation of information and outputting easily understandable contents. CONSTITUTION: A voice synthesizing processing part 14 transmits a flag A indicating the output of a voice to a CPU 8 during a period from the start of speaking up to its end, and when a character information output request for a succeeding picture is outputted during the '1' of the voice output flag, a speed control signal is leveled up by one step (accelerated), a data unit is transmitted, and then the voice output flag is turned to '0'. When no information output request is generated even after the lapse of a fixed period, the speed control signal is leveled down by one step (delayed) and the data unit is transmitted. The speed control signal can be varied in accordance with the categories (general information, traffic information, emergency information, etc.) of character information.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiver provided with a device for outputting character information of an FM multiplex broadcast program as voice by voice synthesis.

[0002]

2. Description of the Related Art In recent years, teletext programs (weather forecasts, news, etc.) and traffic information programs (traffic information for each region and highway) are multiplexed on an FM broadcast signal and transmitted to a display device of an FM receiver. The display service is being started. A technique has also been developed in which the displayed character information is output as a synthetic voice in consideration of safety when the user is driving a vehicle.

In the voice synthesis system in the FM multiplex broadcast receiver, a character code string of character information (for example, a text is a data unit of the data unit parameter 20) in a multiplex program is used as a word / word in a Japanese processing unit. The phonetic data of the syllable is converted into a phonetic symbol string, and the phoneme data of the phonetic symbol is overlaid to synthesize and output the voice data. The control of the speed and pitch at the time of sounding is set in advance by key input or the like.

[0004]

However, when the character information is automatically page-fed at the broadcasting station side, the audio of the next screen is output before the audio output for one screen is completed as audio output. It may be output, and when listening as voice, there is a problem that the division of information is unknown and it is difficult to understand. An object of the present invention is to provide an FM multiplex broadcast receiver that solves such a problem.

[0005]

According to the present invention, the above object is to separate the information of the FM multiplex broadcast program from the FM broadcast signal, demodulate the information and display it on a display device, and synthesize the character information in the information. In an FM multiplex broadcast receiver that outputs a voice by a voice synthesis processing unit, which outputs a voice output flag and outputs a voice control flag when a voice is being output, and changes a utterance speed by the signal, This is solved by providing a control unit that outputs the speed control signal to the voice synthesis processing unit depending on whether or not there is an output request for the character information of the next screen during the reception of the flag during output and reception of the flag.

The above problem can be solved by using the speed control signal as a signal for controlling the speed so as to correspond to the category to which the character information belongs in the preceding paragraph.

[0007]

The control section sends a signal to the speech synthesis processing section to control the speaking rate. The voice synthesis processing section sends a flag indicating that the voice is being output to the control section during utterance. When there is a request to output the character information of the next screen during the reception of the voice output flag, the control unit sends a signal for increasing the utterance speed by the voice synthesizing processing unit, so that the voice synthesizing processing unit speeds up the uttering speed. Further, if there is a request to output the character information of the next screen while receiving the voice output flag, the above operation is repeated and the information can be stabilized with the delimiter being maintained for a certain period.

Further, the control section can obtain the utterance speed suitable for the information content by making the speed control signal variable depending on the category of the character information (general information, traffic information, emergency information, etc.).

[0009]

1 is a block diagram of an FM multiplex broadcast receiver of the present invention. The FM multiplex broadcast receiver receives the FM broadcast signal,
FM multiplex broadcast data (FM multiplex broadcast program information) such as teletext information and traffic information multiplexed and transmitted to the FM broadcast signal is separated and demodulated and displayed on a display device.

In the figure, 1 is an antenna, 2 is a front end (F / E), which has an antenna tuning circuit, a high frequency amplifying circuit, a local oscillator, a mixer, etc. although not shown, and 3 is an intermediate frequency amplifying / FM detector (iF De
t). 4 is a noise canceller / stereo demodulation circuit (Nc + MP) that performs noise cancellation and stereo demodulation
X), and the demodulated stereo audio signal is L
And R respectively.

Reference numeral 5 is a filter circuit (BPF) for extracting the L-MSK modulation component signal from the FM detection signal, and 6 is the L-MS.
An L-MSK demodulation circuit that performs differential detection on a K modulation component signal to reproduce a bit clock and demodulate a bit data string,
Reference numeral 7 denotes a synchronization circuit for detecting block synchronization and frame synchronization, a CRC check unit for performing CRC check for each block, and PN decoding of a bit data string based on the input block synchronization and frame synchronization detection signals. After that, the synchronization / correction circuit includes an error correction circuit that is temporarily stored in a memory (not shown) while being divided into a predetermined format, generates syndrome data using a parity code, and performs error correction by a majority decision on the syndrome.

Reference numeral 8 denotes a CPU, which performs tuning control according to a tuning operation, various processing based on FM multiplex broadcast data, and continuous reception control of FM multiplex broadcast programs when the reception frequency is changed, and 9 is received. Memory for storing the generated FM multiplex broadcast program information (text information, road traffic information, etc.), 1
0 is a key for the user to select a channel or call a desired program (text information, road traffic information, etc.), and 11 is a text broadcast program (news, weather forecast, etc.) and road traffic information. It is a display device that displays on the screen,
Includes a display processor.

Reference numeral 12 denotes a Japanese language processing unit having a Japanese dictionary ROM 13 for converting a character code string of character information into words / words.
Convert to a phonetic symbol string of a phrase. Reference numeral 14 denotes a voice synthesis processing unit, which reads out the phoneme data of the phonetic symbol from the phoneme unit ROM 15 and superimposes it to synthesize and output the voice data.

Reference numeral 16 denotes a digital / analog conversion circuit, which converts a digital voice signal output from the voice synthesis processing section 14 into an analog signal. Reference numeral 17 denotes a speaker including an audio amplifier, which amplifies the analog signal, converts it into an acoustic signal, and outputs it.

Next, the operation of the present invention will be described. C
PU8 inputs the frequency data according to the station of the frequency selected by the tuning operation to a PLL circuit (not shown) to perform electronic tuning control. As a result, the front end 2 inputs the intermediate frequency signal corresponding to the reception frequency to the intermediate frequency / FM detector 3. The intermediate frequency / FM detector 3 performs intermediate frequency amplification and FM detection on the input signal, and the noise canceller / stereo demodulation circuit 4 performs noise cancellation and stereo demodulation processing on the input signal.

On the other hand, the filter circuit BPF5 extracts the L-MSK modulation signal component from the FM detection signal, and the L-MSK demodulation circuit 6 performs delay detection on the L-MSK modulation signal to reproduce the bit clock and bit data. Demodulate the column. The synchronization / correction circuit 7 receives the bit clock, the bit data string, and the synchronization signal output from the L-MSK demodulation circuit 6, performs error detection and correction processing on the input data, and inputs the multiplex broadcast data to the CPU 8. . CP
U8 stores the input multiplex broadcast data in the memory 9.

In such a state, by operating the key 10 to enter the FM multiplex broadcast receiving mode, and further by inputting the service category and the program number, the broadcast program can be specified.
The CPU 8 reads out data corresponding to the specified broadcast program from the memory 9 and inputs it to the display device 11, and the display device 11 develops the data into an image and displays it.

At this time, if the voice output is designated by the operation of the key 10, the CPU 8 transmits the data unit of the image at that time to the Japanese language processing section 12. The Japanese processing unit 12 uses the Japanese dictionary ROM 13 to convert a character code string of character information into a phonetic symbol string of a word / phrase, and the speech synthesis processing unit 14 reads phoneme data of the phonetic symbol from the phoneme unit ROM 15. Are read out and superposed, and voice data is synthesized and output. The digital / analog conversion circuit 16 converts the digital voice signal output from the voice synthesis processing unit 14 into an analog signal, and the audio amplifier and the speaker 17 use the analog signal. Is amplified, converted into an acoustic signal, and output.

The control of the speed and pitch at which the sound is produced can be set in advance by inputting the key 10.

In the above case, the voice synthesis processing section 14 transmits a flag indicating that voice is being output to the CPU 8 through the signal path as shown in A of FIG.

When the voice output flag is "1" and there is a request to output the character information of the next screen, the speed control signal is increased by 1 (speeded up) to transmit the data unit.

By repeating the above operation, the information is finally stabilized in a state in which the division of information is maintained for a certain period. Then, when the flag during voice output becomes "0" and there is no information output request even after a fixed period of time, the speed control signal is decreased by 1 (slow) to transmit the data unit. You can also

In the above control, the speed control signal may be variable depending on the category of character information (general information, traffic information, emergency information, etc.).

[0024]

As described above, according to the present invention, since the utterance speed of the speech synthesis output is variable according to the information, it is possible to always secure the information delimiter and to easily understand the contents. It is possible to provide the FM multiplex broadcasting receiver provided.

[Brief description of drawings]

FIG. 1 is a block diagram of a circuit of the present invention.

[Explanation of symbols]

 8 CPU (control unit) 10 key 11 display device 12 Japanese processing unit 13 Japanese dictionary ROM 14 voice synthesis processing unit 15 phoneme ROM

Claims (2)

[Claims] 1. An FM multiplex broadcast receiver for separating information of an FM multiplex broadcast program from an FM broadcast signal, demodulating and displaying the information on a display device, and outputting character information in the information by voice synthesis. In the middle, the voice output flag is output, and the voice synthesis processing unit which receives the speed control signal and changes the utterance speed by the signal, and receives the voice output flag which is input and receives the flag. Depending on whether there is a request to output the text information of the next screen in the
An FM multiplex broadcast receiver, comprising: a control unit that outputs the speed control signal to the voice synthesis processing unit. 2. The FM multiplex broadcast receiver according to claim 1, wherein the speed control signal is a signal for controlling speed so as to correspond to a category to which the character information belongs.