JP2006099854A - Radio broadcasting recording and reproducing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a radio broadcasting recording and reproducing apparatus which can reproduce easily desired contents out of recorded radio broadcasting. <P>SOLUTION: A broadcasting station is selected by a radio tuner 1, information about individual contents included in the radio broadcasting is detected by a content detecting part 2. The information about detected contents and the radio broadcasting which are associated with each other are accumulated in a memory 3a for recording music and a memory 3b for recording traffic information, contents are extracted by information about the detected contents by a content reproducing part 4, and forward and rewind reproduction of contents are performed. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a radio broadcast recording / reproducing apparatus for recording and reproducing radio broadcasts.

  2. Description of the Related Art Conventionally, there has been known a system that enables follow-up playback when a radio broadcast is missed by using a device having a radio broadcast recording and playback function. For example, a system has been proposed in which two radio broadcast recording devices are used to output a tuner sound muted by navigation sound interruption after the interruption ends (see, for example, Patent Document 1).

  In addition, it has been proposed to record a broadcast for traffic information in a radio broadcast when the start time of the traffic information is reached, or to record a broadcast based on traffic announcement information (for example, Patent Documents). 2).

JP 2000-266558 A Japanese Patent Laid-Open No. 3-185933

  However, in the conventional radio broadcast recording / reproducing apparatus, it is difficult to reproduce the content desired by the user included in the radio broadcast, that is, the reproduction of the content suitable for the user of the recorded radio broadcast. There was a problem that it was difficult to select music.

  The present invention has been made in view of the above-described conventional circumstances, and an object thereof is to provide a radio broadcast recording / playback apparatus capable of easily playing back desired content from recorded radio broadcasts. .

  The radio broadcast recording / reproducing apparatus of the present invention includes a channel selection unit that selects a radio broadcast, a content detection unit that detects content included in the radio broadcast selected by the channel selection unit, or a break between the content, and And radio broadcast recording storage means for storing the detected content based on the detected content or its break, and content playback means for selecting and playing back the stored content.

  With this configuration, necessary content can be easily reproduced from the recorded radio broadcast.

  In the radio broadcast recording / playback apparatus according to the present invention, the content detection means detects the content or a break between the content based on a sound level of the selected radio broadcast.

  With this configuration, it is possible to detect radio broadcast content from audio information.

  In the radio broadcast recording / playback apparatus according to the present invention, the content detection means detects the content or a break between the content and the frequency component included in the selected radio broadcast sound.

  With this configuration, it is possible to detect radio broadcast content from audio information.

  The radio broadcast recording / playback apparatus according to the present invention further comprises data demodulation means for demodulating data multiplexed in the selected radio broadcast, wherein the content detection means is based on the demodulated data. Detect content or its breaks.

  With this configuration, radio broadcast content can be detected from data in data multiplex broadcast.

  The radio broadcast recording / playback apparatus of the present invention further comprises broadcast content information acquisition means for acquiring broadcast content information including the broadcast content of the received broadcast and its time information, and the content detection means is the broadcast content information. And detecting the content or its break.

  With this configuration, it is possible to detect radio broadcast content from broadcast content information provided by a broadcast station website or the like.

  In the radio broadcast recording / playback apparatus of the present invention, the content detection means detects at least one of music content or traffic information content.

  With this configuration, music information or traffic information can be detected and reproduced.

  The radio broadcast recording / playback apparatus according to the present invention further includes a channel selection / time acquisition means for acquiring content-related information indicating the time when the content was recorded and the selected broadcast station. The storage unit stores the content related information and the detected content in association with each other.

  With this configuration, it is possible to search for desired content from the recording time or the selected broadcast station and reproduce it.

  Further, in the radio broadcast recording / playback apparatus of the present invention, compression means for compressing radio broadcast audio data corresponding to the detected content and outputting the compressed data to the storage means; and compressed audio data read from the storage means Data decompressing means for decompressing and outputting the data to the reproducing means.

  With this configuration, consumption of the storage capacity of the storage unit can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, the radio broadcast recording / reproducing apparatus which can reproduce | regenerate desired content easily from the recorded radio broadcast can be provided.

  Hereinafter, a radio broadcast recording / playback apparatus according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a basic configuration of a radio broadcast recording / reproducing apparatus according to an embodiment of the present invention. The outline of the radio broadcast recording / reproducing apparatus of the present embodiment will be described with reference to FIG.

  As shown in FIG. 1, the radio broadcast recording / reproducing apparatus of the present embodiment includes a radio tuner 1, a content detecting unit 2, a music recording memory 3a, a traffic information recording memory 3b, a content reproducing unit 4, An amplifier speaker 5 is provided.

  The radio tuner 1 selects a radio broadcast. The content detection unit 2 detects information related to individual contents included in the radio broadcast selected by the radio tuner 1. Specifically, content information or content breaks (changes) are detected as information related to the content (details will be described later). Then, the detected content is stored in the radio broadcast recording memory 3a or 3b.

  At this time, the music content is recorded in the music recording memory 3a, and the traffic information content is recorded in the traffic information recording memory 3b. The content reproduction unit 4 reproduces the radio broadcast recorded in the memories 3a and 3b and outputs the radio broadcast to the speaker 5. At that time, the content reproduction unit performs forward and backward reproduction of the detected content.

  If the content of the radio broadcast content is traffic information, the content of the traffic information recording memory 3b is updated to the new traffic information, and the content playback unit 4 selects the traffic information when the user selects the traffic information. The contents of the traffic information recording memory 3b are reproduced. Further, the station information and date / time information selected by the radio tuner 1 at the time of radio broadcast accumulation are also accumulated at the same time.

  According to the radio broadcast recording / playback apparatus of the embodiment of the present invention, information related to individual content included in the radio broadcast is detected, and the detected content information and radio broadcast are stored in association with each other. By reproducing a radio broadcast with information related to the content, it is possible to easily reproduce the necessary content from the recorded radio broadcast. In particular, it is possible to reproduce only the music portion from the recorded radio broadcast.

  Further, since the content content or the content break is detected as the information related to the content, it is easy to extract the necessary content. Furthermore, since the music recording memory 3a for storing only the music content is provided, the music can be easily selected. If the station information and date / time information selected by the radio tuner 1 at the time of radio broadcast accumulation are also accumulated at the same time, the origin of the contents can be easily known.

  FIG. 2 is a block diagram showing a detailed configuration of the radio broadcast recording / playback apparatus. As shown in FIG. 2, the radio broadcast recording / reproducing apparatus of this embodiment includes radio tuners 1a and 1b, a content detection unit 2, a radio broadcast recording memory 3, a content reproduction unit 4, an amplifier speaker 5, A switch 6, a data compression unit 7, a data decompression unit 8, a content display unit 9, a selector 10, a channel selection / time acquisition unit 11, and a broadcast station information acquisition unit 12 are provided.

  The radio tuners 1a and 1b are radio tuners for selecting a radio broadcast, and by installing a plurality of tuners, it is possible to record a station that is listening, a station that is broadcast on the back, and a radio that is not being listened to. Become. The selected radio broadcast is switched by the switch 6 and output to the content detection unit 2 or the selector 10.

  The channel selection / time acquisition unit 11 acquires the channel selection information and the current time of the radio broadcast for which content detection is currently being performed, and records it in the radio broadcast recording memory 3 in association with the content. The broadcast station information acquisition unit 12 broadcasts via a wired or wireless communication network (for example, a mobile communication network, DSRC or the like when the recording / playback device of the present embodiment is applied to an in-vehicle device). Information on the music to be broadcast and time information to be broadcast are acquired from distribution information such as the website of the station.

  When the content is music, the content detection unit 2 receives the music information and time information from the broadcast station information acquisition unit 12, and the broadcast data output from the content detection unit 2 is transmitted to the data compression unit 7 as necessary. And output to the radio broadcast recording memory 3. The music information / time information may be detected by demodulating the data when the received radio broadcast is a data multiplex broadcast.

  At this time, when the broadcast data is recorded as it is without being compressed, the data compression unit 7 and the data expansion unit 8 are not necessary, but the memory can be effectively used by compressing the data.

  The broadcast data of the music recording memory 3a and the traffic information recording memory 3b of the radio broadcast recording memory 3 are output to the content display section 9, where the number of recorded music, genre, station name, broadcast time, The title name, singer name, song name of the music being played, broadcast time, title name, singer name, etc. are displayed, and the time when the traffic information was updated is displayed. The broadcast data reproduced by the content reproduction unit 4 is output to the speaker 5 with a built-in amplifier via the selector 10.

  FIGS. 3A and 3B are diagrams showing storage areas of the music recording memory 3a and the traffic information recording memory 3b, respectively. Channel, date / time information, title name, singer name information, genre information, etc. are recorded in the music recording memory 3a, and channel, date / time information, etc. are recorded in the traffic information recording memory 3b. This record information is acquired from the data included in the channel selection / time acquisition unit 11, the broadcast station information acquisition unit 12, and the data multiplex broadcast.

  Next, an example of content detection in the content detection unit 2 will be described with reference to FIG. In FIG. 4, the vertical axis indicates the volume (audio level) of radio broadcasting, and the horizontal axis indicates time.

  As shown in the figure, there are a plurality of silent periods in the radio broadcast, but the contents (music or music and DJ) and their breaks (DJ) and CM (commercial) are detected according to their time width. In other words, CM can be determined by detecting a silent period, detecting a CM, detecting a broadcasting DJ (other than the music being broadcast), and detecting a silent period such as every 15 seconds or 30 seconds.

  Also, as shown in FIG. 5, during broadcasting, DJ and music can be distinguished by frequency analysis. (A) of the figure shows only DJ, and (b) shows the relationship between the power and frequency of music (+ DJ).

  In this way, for the recorded radio broadcast, the broadcast content (music, CM, etc.) is extracted and managed from the change in the audio level, the frequency component of the audio, etc. to facilitate the search and reproduction.

  FIG. 6 is a flowchart showing the traffic information recording operation. In data multiplex broadcasting, traffic information can be detected by detecting a traffic announcement code in a data signal, and the content detection unit 2 or the like detects this traffic announcement code.

  When the traffic announcement code is set (step S1), the recording of the radio broadcast (traffic information) is started (step S2), and when the traffic announcement code is released (step S3), Recording of radio broadcast (traffic information) is terminated (step S4).

  Note that the content of music (music) and traffic information may be detected from the broadcast station information acquisition unit 12 or the time information of music from a broadcast station acquired by data multiplex broadcasting. In addition, the example in which the information about the content is the content of the content or the break of the content has been described, but other information can be similarly implemented.

  The radio broadcast recording / reproducing apparatus of the present invention has an effect of easily reproducing a desired content from a recorded radio broadcast, and is useful for an in-vehicle apparatus or the like.

The block diagram which shows the basic composition of the radio broadcast recording / reproducing apparatus in embodiment of this invention The block diagram which shows the detailed structure of the radio broadcast recording / reproducing apparatus in embodiment of this invention Explanatory drawing which shows the storage area of the memory for radio broadcast recording in embodiment of this invention Explanatory drawing which shows the example of content detection of the radio broadcast recording / reproducing apparatus in embodiment of this invention Explanatory drawing which shows the example of a music detection of the radio broadcast recording / reproducing apparatus in embodiment of this invention The flowchart which shows the traffic information recording operation | movement of the radio broadcast recording and reproducing apparatus in embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Radio tuner 1a Radio tuner 1b Radio tuner 2 Content detection part 3 Radio broadcast recording memory 3a Music recording memory 3b Traffic information recording memory 4 Content reproduction part 5 Speaker 6 Switch 7 Data compression part 8 Data expansion part 9 Content display part 10 selector 11 channel selection / time acquisition unit 12 broadcast station information acquisition unit

Claims (8)

Channel selection means for selecting a radio broadcast,
Content detection means for detecting content included in a radio broadcast selected by the channel selection means or a break in the content;
Radio broadcast recording storage means for storing the detected content or the detected content from its break,
Content playback means for selecting and playing back the stored content;
Radio broadcast recording / playback device comprising: The radio broadcast recording / reproducing apparatus according to claim 1,
The radio broadcast recording / playback apparatus, wherein the content detection means detects the content or a break between the content based on an audio level of the selected radio broadcast. The radio broadcast recording / reproducing apparatus according to claim 1 or 2,
The content detection means is a radio broadcast recording / reproducing apparatus that detects the content or a break between the content and the frequency component contained in the selected radio broadcast sound. A radio broadcast recording / reproducing apparatus according to any one of claims 1 to 3,
Further comprising data demodulating means for demodulating data multiplexed in the selected radio broadcast;
The content detection means is a radio broadcast recording / reproducing apparatus that detects the content or its break based on the demodulated data. A radio broadcast recording / reproducing apparatus according to any one of claims 1 to 4,
Broadcast content information acquisition means for acquiring broadcast content information including the broadcast content of the received broadcast and its time information,
The radio broadcast recording / reproducing apparatus, wherein the content detection means detects the content or a break between the content based on the broadcast content information. A radio broadcast recording / reproducing apparatus according to any one of claims 1 to 5,
The radio broadcast recording / playback apparatus, wherein the content detection means detects at least one of music content or traffic information content. A radio broadcast recording / reproducing apparatus according to any one of claims 1 to 6,
It further comprises channel selection / time acquisition means for acquiring content related information indicating the time when the content was recorded and the selected broadcast station, and the radio broadcast recording storage means is detected with the content related information. Radio broadcast recording / playback apparatus for storing stored contents in association with each other. A radio broadcast recording / reproducing apparatus according to any one of claims 1 to 7,
Compression means for compressing radio broadcast audio data corresponding to the detected content and outputting the compressed data to the storage means, and data decompression for decompressing the compressed audio data read from the storage means and outputting to the reproduction means Means for recording and reproducing radio broadcasts.

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