JP5044455B2 - Broadcast recording / reproducing apparatus and broadcast recording / reproducing apparatus having navigation function - Google Patents

Description

  The present invention provides a broadcast recording / reproducing apparatus having a television broadcast receiving function compatible with analog broadcasting and digital broadcasting, a radio broadcast receiving function compatible with AM broadcasting and FM broadcasting, and the like, which can receive, record and reproduce broadcast contents. In particular, when recording broadcast content on an external storage medium such as an SD card, the storage capacity required for recording the broadcast content is compared with the remaining storage capacity of the external storage medium, and the remaining storage capacity is insufficient. The present invention relates to a broadcast recording / reproducing apparatus and a broadcast recording / reproducing apparatus having a navigation function in which a commercial (CM) portion in broadcast content is cut and recorded.

  Conventionally, as an in-vehicle audio device, a radio wave, a television or the like selectively receives a broadcast wave and records and records the received broadcast wave, a cassette tape, a compact disc (CD), a mini disc (MD), etc. An apparatus for reproducing content data recorded on a portable recording medium is provided.

  In addition, electronic devices such as small audio / video devices and television receivers have been proposed to be installed in automobiles, and these devices must be installed in vehicles like in-vehicle audio devices and in-vehicle audio / video devices. In an audio / video apparatus considering the above, content data read from a portable recording medium such as a CD can be recorded on a recording means such as a hard disk (HDD), and the recorded content data can be reproduced. It is also possible to record (record) audio and image data by receiving a television broadcast.

  In addition, when radio broadcasts and television broadcasts are received and the broadcast content is recorded on a storage medium, not only recording and recording (recording) on a storage medium such as a hard disk device built in the electronic apparatus, but also external recording It can also be recorded on an external storage medium (for example, an SD card) attached to the storage medium attachment unit.

  For example, the following Patent Document 1 (Japanese Patent Laid-Open No. 11-39846) discloses a recording apparatus in which recording (recording) is not interrupted in the middle. In this recording apparatus, the recording time for recording a program and the bit rate of the MPEG system stream output from the encoder board are set, and the microprocessor performs recording based on the recording time and bit rate. A necessary capacity which is a necessary recording capacity is calculated, a necessary area which is a recording area larger than the necessary capacity is secured on the hard disk, and a program received by the TV tuner is recorded in the necessary area.

  By the way, when reproducing the content recorded on the internal storage medium or the external storage medium, there are many users who want to view the content by skipping the commercial (hereinafter simply referred to as CM) portion included in the broadcast content. Exists. Japanese Patent Laid-Open No. 2006-252651 below discloses a recording / playback apparatus that meets such a requirement.

The recording / playback apparatus disclosed in Patent Document 2 includes a CM detection unit that detects a CM part from a recorded program, and a CM viewing management that manages whether or not the accompanying CM part is viewed when playing back the recorded program. A separate reproduction control unit that separates and reproduces the main part of the program and the CM part when the recorded program is reproduced, and a deleteability determination unit that prohibits deletion processing from the recording device until the CM part is viewed. The main part and the CM part are accurately separated and reproduced from the recorded program.
JP 11-39846 A JP 2006-252651 A

  By the way, when the electronic device as described above receives radio broadcast or television broadcast and records the broadcast content on an external storage medium, for example, an external storage medium such as an SD card, the external storage medium is unused. If the capacity of the storage area (remaining storage capacity) is not sufficient, the recording of the broadcast content is terminated halfway depending on the broadcast time of the broadcast content (broadcast program) to be recorded, that is, the storage capacity required for recording. There was a problem of doing.

  If the storage capacity of the external storage medium is expected to be insufficient when recording the broadcast content, the probability that the broadcast content can be recorded to the end increases if the CM content included in the broadcast content can be recorded. However, with the technique of the above-mentioned Patent Document 2, even if the CM can be skipped during playback, recording cannot be performed except for the CM during recording, and the above-described problems can be solved. The problem of not being possible arises.

  The present invention has been made to solve the above-described problems. When recording broadcast content on an external storage medium such as an SD card, the storage capacity required for recording the broadcast content and the remaining storage of the external storage medium are provided. The purpose of the present invention is to provide a broadcast storage / reproduction device having a navigation function and a broadcast storage / reproduction device that cuts a commercial portion from broadcast content when the remaining storage capacity is not sufficient. To do.

In order to solve the above-mentioned problem, the invention according to claim 1 of the present application includes a broadcast receiving unit that receives at least broadcast content and information including a required broadcast time of the broadcast content, and an operation unit that selects the broadcast content to be received. A RAM for temporarily recording the broadcast content selected by the operation unit, and a broadcast recording / reproducing apparatus for recording the broadcast content temporarily recorded in the RAM on an external storage medium,
The broadcast recording / reproducing apparatus includes an external storage medium mounting unit that includes the external storage medium and has a capacity detection unit that detects a free storage capacity of the external storage medium, and a required broadcast of the selected broadcast content. A program time detection unit for calculating a storage capacity required when recording the broadcast content on the external storage medium from a time, a storage capacity required for recording the broadcast content calculated by the program time detection unit, and the capacity A capacity comparison unit that compares the free storage capacity of the external storage medium detected by the detection unit, a CM detection unit that detects a commercial part in the broadcast content, and a CM part deletion that deletes the commercial part from the broadcast content And a control unit,
When the capacity comparison unit determines that the free storage capacity is smaller than the storage capacity necessary for recording the broadcast content, the CM detection unit detects a commercial part in the broadcast content, and the CM The partial deletion means deletes the commercial part detected by the CM detection unit from the broadcast content temporarily recorded in the RAM, and the control unit records the broadcast content from which the commercial part has been deleted in the external storage medium. It is characterized by.

  According to a second aspect of the present invention, in the broadcast recording / reproducing apparatus according to the first aspect, the broadcast content is a TV program or a radio program.

  In the invention according to claim 1, when the capacity comparison unit determines that the free storage capacity is smaller than the storage capacity necessary for recording the broadcast content, the CM detection unit includes the broadcast content in the broadcast content. The CM part deleting means deletes the commercial part detected by the CM detection unit from the broadcast content temporarily recorded in the RAM, and the control unit broadcast content from which the commercial part has been deleted. Is recorded in the external storage medium. In the invention according to claim 2, in the broadcast storage / playback apparatus according to claim 1, the broadcast content is a TV program or a radio program.

  According to such a configuration, when recording broadcast content broadcast by radio broadcast or television broadcast on an external storage medium such as an SD card, the storage capacity required for recording the broadcast content is When the free storage capacity of the external storage medium is insufficient, the commercial is cut and recorded, so that it is possible to reduce the probability of inconvenience that recording of the broadcast content to be recorded ends in the middle. become.

  Hereinafter, specific examples of the present invention will be described in detail with reference to examples and drawings.

  However, the embodiment described below exemplifies an in-vehicle navigation device having a navigation function as a broadcast recording / reproducing device, but is not intended to specify the present invention as this in-vehicle navigation device, The present invention can be equally applied to the in-vehicle navigation device of other embodiments included in the scope of the claims.

  As shown in FIG. 1, the in-vehicle navigation device 1 includes a control unit 10, a broadcast receiving unit 11, an operation unit 12, a display unit 13, a current position detection unit 14, a map storage unit 15, an external recording medium mounting unit 16, an external A storage medium 17, a capacity detection unit 18, an antenna 19, a program time detection unit 20, a capacity comparison unit 21, a CM detection unit 22, and a CM part deletion unit 23 are configured.

  The control unit 10 includes a processor including a CPU (not shown), a ROM 110, and a RAM 111, and controls the operation of each unit of the in-vehicle navigation device 1 according to a control program recorded in the ROM 110.

  The control unit 10 also functions as a route search unit 112, which will be described later, and also controls reception, recording, and recording functions of radio broadcasts and television broadcasts.

  The broadcast receiving unit 11 receives broadcast radio waves from a radio or a television broadcasting station via the antenna 19. When the broadcast received by the broadcast receiving unit 11 is a television broadcast, a music broadcast such as radio, etc., when the user selects a program (broadcast content) received via the operation unit 12, the selected program is received. The received program is temporarily recorded in the RAM 111 in the control unit 10, and the broadcast content temporarily recorded in the RAM 111 is mounted in an internal storage device (not shown) such as a hard disk device or an external recording medium mounting unit 16 described later. The SD is recorded (recorded, recorded) on an external storage medium 17 such as a card.

  The broadcast receiving unit 11 also receives a broadcast station or each broadcast that can be received in an area where the vehicle is located based on the current position of the vehicle detected by the current position detecting means described later when receiving a television broadcast or a radio broadcast. It receives and stores program information including the frequency of the broadcast radio wave of the station and the required broadcast time. The information stored in the broadcast receiving unit 11 is displayed when displaying the menu screen or the channel selection screen displayed on the display unit 13 when the in-vehicle navigation device 1 is only receiving broadcasts. .

  The operation unit 12 includes various keys, switches, and the like, and performs an input operation in the in-vehicle navigation device 1, an input of a departure place, a destination, and the like.

  The operation unit 12 may be input by touching an icon or the like displayed on the screen by providing a touch panel function on the display unit 13 described later.

  The display unit 13 displays a map image and a guide route on the map image so as to be distinguishable from other roads, and is configured by, for example, a liquid crystal display.

  The current position detector 14 includes GPS receiving means (not shown), and detects the current position of the vehicle from GPS satellite signals received by the GPS receiving means.

  The current position detection unit 14 can also detect the current position based on detection outputs of the direction sensor 23 and the vehicle speed sensor 24 provided in the vehicle. In this case, the current position is obtained by detecting the travel distance and travel direction of the vehicle and integrating these values. This current position detection method is effectively used to calculate the current position in a tunnel where GPS radio waves cannot be received or in high-rise buildings where errors are likely to occur by combining with the GPS receiving means.

  The map storage unit 15 includes road node data (node data) and road link data (link data) that use nodes such as intersections and branch points of roads as nodes and links between the nodes as links. Store the data.

  The route search unit 112 in the control unit 10 refers to the road data stored in the map storage unit 15 when the user designates the departure point or the destination via the operation unit 12, and changes from the departure point to the destination. It searches for the optimal route to reach and creates guide route data. The search for the optimum route is performed by various methods such as Dijkstra's method for linking and nodes from the road node corresponding to the current position or the starting point designated by the user to the road node corresponding to the destination designated by the user. Search, accumulate link length (link cost) and required time, etc., provide the route with the shortest total link length or total required time as a guide route, and provide road nodes and links belonging to the route as guide route data Is.

  The external storage medium mounting unit 16 is a mounting unit that mounts an external storage medium 17 such as an SD card. The external storage medium mounting unit 16 further includes a capacity detection unit 18 that detects the free storage capacity of the external storage medium 17. I have.

  The program time detection unit 20 calculates a required time (broadcast required time) of a program selected by the user based on the program information stored in the broadcast receiving unit 11, that is, a program (broadcast content) recorded in the external storage medium 17. To detect. Then, the storage capacity required to record the broadcast content on the external storage medium 17 is calculated from the time required for the program.

  The capacity comparison unit 21 compares the storage capacity necessary for recording broadcast content calculated by the program time detection unit 20 and the free storage capacity (remaining capacity) of the external storage medium 17 detected by the capacity detection unit 18. When the free storage capacity of the external storage medium 17 is sufficient and larger than the storage capacity necessary for recording broadcast content, the control unit 10 records the broadcast content temporarily recorded in the RAM 111 on the external storage medium 17. Start processing.

  The CM detection unit 22 externally stores the broadcast content temporarily recorded in the RAM 111 when the external storage medium 17 has insufficient free storage capacity and is smaller than the storage capacity necessary for recording the broadcast content. When the process of recording on the medium 17 is started, the CM portion in the broadcast content is detected.

  The CM part deletion unit 23 deletes the CM part detected by the CM detection unit 22.

  The technique disclosed in Patent Document 2 can be applied to detect and delete CMs included in broadcast content.

  In this way, even if the external storage medium 17 does not have enough free storage capacity and is smaller than the storage capacity required for recording broadcast content, the CM portion included in the broadcast content is removed. Since it is recorded, it is possible to reduce the probability of inconvenience that recording of the broadcast content ends in the middle. In addition, when the storage medium capacity is not enough for the storage capacity of the broadcast content, a method of compressing and storing the broadcast content information by changing the bit rate of the data to be recorded may be adopted. Although application requires data conversion means or the like, according to the present invention, the above-mentioned inconvenience can be easily eliminated by deleting the CM.

  Next, the operation procedure of the in-vehicle navigation device 1 according to the embodiment of the present invention described above will be described with reference to FIG.

  FIG. 2 is a flowchart showing a processing procedure in the in-vehicle navigation device 1. In the in-vehicle navigation device 1, the broadcast receiving function is selected and the broadcast receiving unit 11 receives the broadcast and views it. The procedure is shown.

  Note that the broadcast content to be viewed has been selected by the user with reference to the program information.

  In step S101, the external storage medium 17 is mounted on the external storage medium mounting unit 16. In the next step S102, the control unit 10 determines whether or not there is a request for recording (recording / recording) to the external storage medium 17. If there is no request for recording, the process proceeds to a recording end determination process in step S110.

  On the other hand, if there is a recording request, it is determined whether or not recording of the broadcast content received by the broadcast receiving unit 11 has been started in the process of step S103. That is, it is determined whether or not the broadcast receiving unit 11 receives the broadcast program selected by the user and the process of temporarily recording the broadcast content in the RAM 111 is started. If the recording process has not been started, the determination process of step S103 is repeated, and if the recording process has been started, the process proceeds to step S104.

  In the process of step S <b> 104, it is necessary for the program time detection unit 20 to detect the required broadcast time of the broadcast content being recorded based on the program information stored in the broadcast reception unit 11 and record it in the external storage medium 17. The storage capacity is calculated. In step S105, the capacity detection unit 18 detects the free storage capacity (remaining capacity) of the external storage medium 17 attached to the external storage medium attachment part 16.

  In the processing of step S106, the capacity comparison unit 21 stores the storage capacity necessary for recording the broadcast content calculated by the program time detection unit 20 and the free capacity (remaining capacity) of the external storage medium 17 detected by the capacity detection unit 18. When the free storage capacity of the external storage medium 17 is sufficient and larger than the storage capacity necessary for recording broadcast content, the control unit 10 stores the broadcast content temporarily recorded in the RAM 111 in the external storage. The process of recording on the medium 17 is started. In step S110, it is determined whether or not the recording of the broadcast content to the external recording device 17 is finished. If the recording process is finished, the process is finished. If the recording process has not ended, the process returns to step S104.

  On the other hand, if the external storage medium 17 does not have enough free storage capacity and is smaller than the storage capacity necessary for recording the broadcast content, the process proceeds to step S107, and the CM detection unit 22 transmits the CM part in the broadcast content. Is detected. In step S108, the CM part deleting unit 23 deletes the CM part detected by the CM detecting unit 22, and the control unit 10 performs processing for recording the broadcast content from which the CM part has been deleted in the external storage medium 17. Start.

  Then, it is determined whether or not the recording of the broadcast content to the external recording device 17 is completed in the process of step S109. If the recording process is completed, the process is terminated. If the recording process has not ended, the process returns to step S107, and the CM deletion process is repeated until broadcast content recording ends.

  As described above in detail, according to the present invention, when recording broadcast content on an external recording medium such as an SD card, the storage capacity required for recording the broadcast content is compared with the remaining storage capacity of the external recording medium. However, when the remaining storage capacity is insufficient, the commercial part is cut from the broadcast content and recorded, so that the probability of inconvenience that the storage of the broadcast content to be recorded ends in the middle can be reduced. become able to.

It is a block diagram which shows the structure of the vehicle-mounted navigation apparatus which is a vehicle-mounted electronic device concerning the Example of this invention. It is a flowchart which shows the process sequence in the vehicle-mounted navigation apparatus concerning the Example of this invention.

Explanation of symbols

1: In-vehicle navigation device (broadcast recording / reproducing device)
10: Control unit 110: ROM
111: RAM
112: route search unit 11: broadcast receiving unit 12: operation unit 13: display unit 14: current position detection unit 15: map storage unit 16: external recording medium mounting unit 17: external storage medium 18: capacity detection unit 19: antenna 20 : Program time detection unit 21: Capacity comparison unit 22: CM detection unit 23: CM part deletion unit

Claims (2)

A broadcast receiving unit that receives information including at least broadcast content and a required broadcast time of the broadcast content, an operation unit that selects broadcast content to be received, a RAM that temporarily records the broadcast content selected by the operation unit, and a RAM In the broadcast recording / reproducing apparatus for recording the broadcast content temporarily recorded in the external storage medium,
The broadcast recording / reproducing apparatus includes an external storage medium mounting unit that includes the external storage medium and has a capacity detection unit that detects a free storage capacity of the external storage medium, and a required broadcast of the selected broadcast content. A program time detection unit for calculating a storage capacity required when recording the broadcast content on the external storage medium from a time, a storage capacity required for recording the broadcast content calculated by the program time detection unit, and the capacity A capacity comparison unit that compares the free storage capacity of the external storage medium detected by the detection unit, a CM detection unit that detects a commercial part in the broadcast content, and a CM part deletion that deletes the commercial part from the broadcast content And a control unit,
When the capacity comparison unit determines that the free storage capacity is smaller than the storage capacity necessary for recording the broadcast content, the CM detection unit detects a commercial part in the broadcast content, and the CM The partial deletion means deletes the commercial part detected by the CM detection unit from the broadcast content temporarily recorded in the RAM, and the control unit records the broadcast content from which the commercial part has been deleted in the external storage medium. A broadcast recording / reproducing apparatus characterized by the above.   The broadcast recording / reproducing apparatus according to claim 1, wherein the broadcast content is a TV program or a radio program.

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