JP3096621B2 - FM multiplex receiver - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FM multiplex receiver, and more particularly to, for example, multiplexing additional information data consisting of a digital signal with a main audio signal separately from the main audio signal, and then transmitting the multiplexed FM signal. F to receive FM multiplex broadcasting
It relates to an M-multiplex receiver.

[0002]

2. Description of the Related Art In FM broadcasting, in FM multiplex broadcasting which broadcasts an FM multiplex signal in which data is superimposed on an audio signal, various character information and graphics can be displayed in addition to the conventional stereo audio signal.

[0003] Various uses are considered as information using characters, and one of them is a music-related program. As a display method of this music program, for example, a menu of various programs is displayed in the initial display, and a music program is selected from the menu, whereby the contents of the actual music program are displayed on the display.

[0004] Further, in a music program as a service to supplement the main program, additional information data such as the name of the music being played, the name of the artist, and the title of the album are simultaneously transmitted. That is, a broadcasting station prepares additional information data corresponding to a song in a database or the like in advance, and automatically extracts additional information data corresponding to a song reproduced from a CD player or a tape recorder from the database and multiplexes them. Transmitting.

[0005]

When listening to a music program on an FM broadcast or the like, there is a case where a user wants to record a desired song. However, the name of the music played on the music program is usually announced before and after the performance, but it is often experienced that the music is missed.

[0006] When a music program is received by FM multiplex broadcasting, information on a song played by the program, for example, a song name or an artist name can be displayed in characters. If there is a song that you want to record, you have to wait in front of the receiver until the song starts because you do not know when the song starts. When the user returns from the receiver after leaving the receiver for an appropriate time until the song starts, the desired song may have already started or ended. To avoid this, for example, it is conceivable to connect a tape recorder, MD recording / reproducing device, etc. to the receiver and always record, but it is uneconomical since a large amount of tape or MD disk is required. Yes,
It is extremely troublesome to search for the desired song from the recording.

[0007]

SUMMARY OF THE INVENTION In view of the above, the present invention provides a method for receiving an FM multiplex broadcast, which is obtained by multiplexing additional information data on a main audio signal separately from the main audio signal and then performing FM modulation and transmission. An FM multiplex receiver that receives FM multiplex broadcasts, performs FM detection, and outputs the main audio signal, and a demodulation unit that outputs the additional information data; a recording unit that records the main audio signal; Input means for setting music data related to the music of the music, a memory means for storing the music data set by the input means, and displaying the additional information data and the music data set by the input means. Display means for performing the recording, and recording control means for causing the recording means to record the music of the music being received based on the performance period control data included in the additional information data when the music broadcast is received, from the start of performance. Comparing means for comparing the music data contained in the additional information data with the music data stored in the memory means, wherein the recording is performed when the respective music data compared by the comparing means match. The recording operation is continued by the control means, and the recording operation is stopped when they do not match.

[0008]

[0009]

Further, the present invention provides an FM multiplex receiver for multiplexing additional information data on a main audio signal separately from the main audio signal, and then receiving the FM multiplex broadcast transmitted by FM modulation. Detecting means for receiving FM and outputting the main audio signal by performing FM detection, demodulating means for outputting the additional information data, recording means for recording the main audio signal, and display for displaying music data relating to music of music Input means for instructing automatic recording when the name of a music piece to be played next is displayed on the display means and the music piece is a music piece desired to be recorded on the recording means; Recording control means for causing the recording means to record the song for which the automatic recording has been instructed based on the performance period control data included in the additional information data from the performance start time to the performance end. And butterflies.

[0011]

FIG. 2 shows a frame structure of a digital signal which is additional information data multiplexed on an FM broadcast signal. One frame is composed of 272 blocks, and a 16-bit BIC (Block Identificati
on Code) is added, and is provided for reproduction of frame synchronization and block synchronization. Of the 272 blocks, 190 blocks are packets for transmitting data, and 82 blocks are parity packets for transmitting parity in the column direction.
In the data transmission packet, 176 follows BIC.
Bit data packet, 14 bit CRC (Cyclic
Retundancy Code) and a parity part of 82 bits are provided.

In this embodiment, when the main audio signal is music, the transmitted additional information data includes performance period control data indicating the start and end of the performance of the music.

An F in which such digital signals are multiplexed
The M multiplex signal is received by the antenna 12 of the FM multiplex receiver 10 shown in FIG. In the front end 14, an FM multiplex signal is converted into an IF signal by a local oscillation frequency signal from a block 18 including a PLL circuit and a local oscillation circuit controlled by a control unit, for example, a microcomputer 16. The converted IF signal is then detected by an IF amplification and detection circuit 20, and the detected signal is converted to an LMSK (Level-controlled Minimum) signal.
Shift Keying) to the demodulation circuit 22 and to the microcomputer 16.

The LMSK demodulation circuit 22 demodulates the digital signal having the frame structure shown in FIG. The demodulated digital signal is synchronously reproduced in accordance with a BIC and error-corrected in accordance with a parity code in a synchronous reproduction and error correction circuit 24 by a control signal from the microcomputer 16, and the digital signal which has undergone these processes is supplied to the microcomputer 16. . The digital signal given to the microcomputer 16 is a key input signal from the operation key 30 and a RO signal.
The processing is performed according to a predetermined program stored in the M26.
And a RAM 28 which constitutes a memory means.
Stored in

The audio output obtained by the detection circuit 20 passes through a selection switching circuit 32 and is applied to a low frequency amplification circuit 36. Numeral 38 denotes an MD control circuit for controlling the operation of a recording device, for example, the MD recording / reproducing device 40, that is, the music recording operation, based on the performance period control data among the additional information data. .

The performance period control data is data for automatically recording only the performance portion except for the conversation portion in the music program. Specifically, the flag is set to "1" only in the performance portion. I do. When receiving a music broadcast, the CPU 16
Extracts the performance period control data from the additional information data and supplies it to the MD control circuit 38. The MD control circuit 38 sets the MD recording / reproducing device 40 to the recording mode when the flag indicating that the music is being played is 1 based on the performance period control data, and sets the stop mode or the pause mode when the flag is 0.

The additional information data is transferred to the MD recording / reproducing device 4
A data processing circuit 42 for converting the data into a format recordable with 0 may be provided so that the MD recording / reproducing device 40 at the time of music broadcast reception records the performance period control data together with the audio signal.

Here, a description will be given of an embodiment in the case of automatically recording a tune set in advance by the user.

First, as a first embodiment, a case will be described in which an automatic recording mode is set and a desired music title is set using the operation keys 30 as input means.

The operation key 30 is, as shown in detail in FIG.
An automatic recording key 30g, a numeric keypad 30a, and the like are provided. The automatic recording mode is set by operating the automatic recording key 30g, and the kanji or hiragana is input by the numeric keypad 30a or the like by the JIS code, and the RAM 28 is input.
To store the song title. That is, for example, when setting the title of the song "Gentle rain", first the function key 30f
push. As a result, a menu of various function settings including the music title setting is displayed on the display 34. Next, after operating the cursor key 30c to select the song title setting, pressing the input key 30e shifts the mode to the song title setting mode. When the mode shifts to the song title setting mode, the cursor key 30
The c, the page key 30d, and the menu key 30b function as input keys of the illustrated alphabet. Therefore, by operating the numeric keypad 30a, the cursor key 30c, the page key 30d, and the menu key 30b, the user inputs "4D25", and then presses the input key 30e. Displays the character of “Y”. Note that “4D25” is a JIS code indicating the kanji character “Yu”. Then, "243
When "7" is input and the input key 30e is pressed, "shi" of hiragana is set, and "shi" is displayed on the display 34.
Similarly, when "2424" is input and the input key 30e is pressed, the hiragana "i" is set, and the display 34 displays "i". Further, "312B" is input, and input key 3
When 0e is pressed, the kanji “rain” is set, and “rain” is displayed on the display 34. Finally, when "0000" is input and the input key 30e is pressed, the setting of the song name "Gentle Rain" is completed, and "Gentle Rain" is displayed on the display 34 for a predetermined time, and then the display on the display 34 is displayed. Returns.

Referring to FIG. 4, the processing of the microcomputer 16 when automatically recording a song having the song name set by the operation keys 30 will be described.

First, in step S1, it is determined whether or not automatic recording is set, and if not, the process is terminated. If automatic recording is set, step S
It is determined in step 2 whether a broadcast of a music program is received.
Based on the performance period control data extracted and supplied to the MD control circuit 38, the music is recorded on the MD recording / reproducing device 40, which is a recording device, from the start of performance of the music (step S3).
In this case, automatic recording is performed irrespective of whether the music has the set music title. Next, the song name data set in advance and stored in the RAM 28 is compared with the song name data in the additional information data of the received signal (step S4). If they do not match, the recording operation is interrupted (step S5). The recorded recording area is set as an empty area. If the tune name data matches, the tune is recorded in the MD recording / reproducing device 40 to the end (step S6). In this way, a desired music set in advance can be recorded on the MD recording / reproducing device 40 as a recording device.

As described above, if the desired music is automatically recorded, even if the time for transmitting the music name data in the additional information data of the received signal is delayed from the start of the music for the music broadcast, for example, Recording can be performed without missing the first part of. That is, even if the user notices that the song is to be recorded during reception of the song, the user can record from the beginning of the song by setting a desired song name in advance.

It should be noted that the MD recording / reproducing device 40 for receiving a music broadcast
If the performance period control data is recorded together with the audio signal, the start of the music can be found by detecting the change of the flag of the reproduction control data from 0 to 1 (or from 1 to 0).

Next, as a second embodiment, as shown in FIG. 5, when the music data displayed on the display means 34 includes music data relating to a song desired to be recorded,
A case will be described in which a song related to the music data is set using the operation keys 30 and the song is automatically recorded.

When a menu of various programs is displayed on the display 34 in the initial display, a music program is selected from the menu. As a result, the names of the songs to be played are displayed on the display means 34 in order. At this time, when a desired song title number is selected using the numeric keypad 30a, the song title number is stored in the RAM2.
8 is stored.

The processing of the microcomputer 16 when automatically recording the song having the song name selected by the numeric keypad 30a is the same as that shown in FIG.

That is, in step S1, it is determined whether or not automatic recording is set, and if not, the process is terminated. If automatic recording is set, step S
It is determined in step 2 whether a broadcast of a music program is received.
Based on the performance period control data extracted and supplied to the MD control circuit 38, the music is recorded on the MD recording / reproducing device 40, which is a recording device, from the start of performance of the music (step S3).
In this case, automatic recording is performed irrespective of whether the song is the selected song title. Next, the song name data previously selected and stored in the RAM 28 is compared with the song name data in the additional information data of the received signal (step S4). If they do not match, the recording operation is interrupted (step S5). The recorded recording area is set as an empty area. If the tune name data matches, the tune is recorded in the MD recording / reproducing device 40 to the end (step S6). In this way, a desired music set in advance can be recorded on the MD recording / reproducing device 40 as a recording device.

As described above, if the desired music is automatically recorded, even if the time for transmitting the music name data in the additional information data of the received signal is delayed from the start of the music for the music broadcast, for example, Recording can be performed without missing the first part of. That is, even if the user notices that the song is to be recorded during reception of the song, the user can select the number of the displayed song name and start recording from the beginning of the song.

As a third embodiment, when the name of the next tune to be played is displayed on the display means 34, the automatic recording key 30g is pressed. Of the additional information data of the signal, the CPU 16
Based on the performance period control data extracted and supplied to the MD control circuit 38, the music can be automatically recorded by the MD recording / reproducing device 40, which is a recording device, from the start of the performance to the end of the performance. .

That is, the microcomputer 16 determines whether or not the automatic recording key is pressed, and if not, the process is terminated. If the automatic recording key is pressed, it is determined whether or not the broadcast of the music program is received. If the music program is a music program, the performance extracted from the additional information data by the CPU 16 and supplied to the MD control circuit 38 is determined. When the flag of the period control data changes from "0" to "1", that is, when the performance of the next song is started, the MD recording / reproducing apparatus 40 as a recording device is started.
Will be recorded. And the flag of the performance period control data is "
When the value changes from "1" to "0", that is, when the performance of the music ends, the recording operation stops.

In each of the embodiments described above, an example is given in which music titles are set in advance. However, the present invention is not limited to this. For example, an artist name is set, and the artist's music is automatically recorded. You can also do so.

[0033]

As described above, according to the present invention, a music program set in advance among music programs transmitted by FM multiplex broadcasting is automatically recorded by the recording means. It is not necessary to do uneconomical and troublesome operations such as continuing recording with an MD recording / reproducing device or a tape recorder.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of an FM multiplex receiver according to the present invention.

FIG. 2 is an illustrative view showing a frame configuration of a digital signal multiplexed on an FM broadcast signal;

FIG. 3 is an illustrative view showing a part of the embodiment in FIG. 1;

FIG. 4 is a flowchart showing a part of the operation of the present invention.

FIG. 5 is an illustrative view showing a part of another embodiment of the present invention;

[Explanation of symbols]

 Reference Signs List 10 FM multiplex receiver 16 Microcomputer (control means) 20 Audio signal detection circuit 22 FM multiplex signal demodulation circuit 28 RAM (memory means) 30 Input means 34 Display (display means) 38 MD control circuit 40 MD recording / reproducing device

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-8751 (JP, A) JP-A-8-306126 (JP, A) JP-A-58-182179 (JP, A) JP-A-61-1986 30128 (JP, A) JP-A-3-185933 (JP, A) JP-A-1-195727 (JP, A) JP-A 8-76791 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) H04B 1/16 G11B 31/00 G10H 1/00

Claims (4)

(57) [Claims] 1. An FM multiplex receiver for multiplexing additional information data on a main audio signal separately from the main audio signal, and then receiving an FM multiplex broadcast transmitted by FM modulation. Detecting means for performing FM detection and outputting the main audio signal and demodulating means for outputting the additional information data; recording means for recording the main audio signal; and setting music data related to a desired music piece Input means; memory means for storing music data set by the input means; display means for displaying the additional information data and music data set by the input means; and the additional information data when receiving a music broadcast. Recording control means for causing the recording means to record the music of the music being received based on the performance period control data included in the additional information data; Data, and comparing means for comparing music data stored in the memory means.When the respective music data compared by the comparing means match, the recording operation is continued by the recording control means, An FM multiplex receiver, wherein a recording operation is stopped when they do not match. 2. An FM multiplex receiver for multiplexing additional information data on a main audio signal separately from the main audio signal, and then receiving the FM multiplex broadcast transmitted by FM modulation. Detecting means for performing FM detection and outputting the main audio signal and demodulating means for outputting the additional information data; recording means for recording the main audio signal; and display means for displaying music data included in the additional information data Input means for instructing automatic recording when the name of a song to be played next is displayed on the display means and the song is a song desired to be recorded on the recording means; and Recording control means for causing the recording means to record the song for which the automatic recording was instructed based on the performance period control data included in the additional information data from the start of the performance to the end of the performance. Characteristic FM multiplex receiver. 3. The FM multiplex receiver according to claim 1, wherein the music data is a music title. 4. The FM according to claim 1, wherein the music data is an artist name.
Multiplex receiver.