JP2006108920A - Vehicle-mounted terminal device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve convenience of recording and reproducing video information and audio information included in a broadcast radio wave even when the broadcast radio wave can not be received normally. <P>SOLUTION: A system control part 1 acquires information on an error frequency of a video/audio signal obtained by demodulation and separation for video-recording processing and time information from a demodulation/TS processing part 4, calculates a video recording rate as the rate of a time wherein the error frequency of the video/audio signal demodulated for the video-recording processing is less than a reference value to the time from the start to the end of the video-recording processing, and relates and writes the information and information on the channel and name of a video-recorded program in a storage part 11. This information is displayed on a monitor in a spread sheet form and then a user can easily grasp whether the rate of a part, video-recorded through normal reception, of the video/audio data of the video-recorded program is large or small. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an in-vehicle terminal device having a function of recording / reproducing a television broadcast.

  2. Description of the Related Art Conventionally, there are mobile objects such as automobiles that are equipped with a vehicle-mounted television device. This in-vehicle television device is a device that receives broadcast radio waves transmitted from a broadcast station and reproduces video information and audio information included in the received broadcast radio waves.

For example, as disclosed in Patent Document 1, the in-vehicle television device has the same function as a home video recorder in order to record / reproduce video information and audio information included in received broadcast radio waves. There is something.
JP 2003-163862 A

  As described above, in-vehicle television devices with a recording / playback function may not be able to normally receive broadcast radio waves due to changes in the surrounding environment due to movement of a moving body. In such a case, as a matter of course, normal recording / playback by the recording / playback function cannot be performed. In other words, when a recorded program is reproduced in a state where normal reception of broadcast radio waves cannot be performed, for example, a video with no color is reproduced, but the user generally records in the past. Because the radio wave condition at the time of recording of the program is not grasped, the video / audio that is not normal at the time of playback may be watched for a long time in some cases, and the convenience is impaired. It was.

  Accordingly, an object of the present invention is to provide an in-vehicle terminal capable of improving convenience when recording and reproducing video information and audio information included in the broadcast radio wave even when the broadcast radio wave cannot be normally received. To provide an apparatus.

  That is, the in-vehicle terminal device according to the present invention records a video included in a broadcast radio wave selected for reception as video / audio data, and a portion of the recorded video / audio data that satisfies a predetermined quality condition Recording quality information indicating the proportion of the recorded video, and the generated recording quality information is managed in association with basic information for specifying the contents of the recorded video / audio data, and is managed by this management means Is controlled to be displayed on the display means.

  The in-vehicle terminal device according to the present invention generates recording quality information indicating the proportion of the recorded video / audio data that occupies a condition that satisfies a predetermined condition, and the generated recording quality information is recorded. Since it is displayed together with the basic information for specifying the contents of the video / audio data, the user can easily grasp the information as a guideline whether or not to reproduce the recorded video / audio data.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a block diagram showing a configuration example of an in-vehicle broadcast recording / playback apparatus according to an embodiment of the present invention.

  An in-vehicle broadcast recording / playback apparatus according to an embodiment of the present invention receives a broadcast radio wave transmitted from a broadcast station, plays a video and audio included in the received radio wave, and plays this video. And a function of recording audio as video data and audio data on a storage medium.

  Specifically, as shown in FIG. 1, the in-vehicle broadcast recording / playback apparatus according to the embodiment of the present invention includes a system control unit 1 that controls the operation of the entire apparatus, and a TV (television) antenna 2 is provided. For example, a tuner 3 for selecting a radio wave of a preselected television broadcast station from a received radio wave of a digital terrestrial television broadcast, and a demodulation / TS (Transport Stream) processing unit 4 are provided.

  The demodulation / TS processing unit 4 separates the radio wave selected by the tuner 3 into a TV video signal, a TV audio signal, and a program information signal, and demodulates the separated TV video signal and TV audio signal. In addition, error correction is performed on these signals and they are output, and EPG (Electronic Program Guide) information is acquired from the program information signals separated as described above.

  1 includes a video / audio processing unit 5, an audio control unit 6, a display control unit 7, an audio output unit (speaker) 8, a display unit (monitor) 9, and an input unit 10. And a storage unit 11.

  The video / audio processing unit 5 decodes (decodes) and outputs the TV video signal and TV audio signal separated by the demodulation / TS processing unit 4. The audio control unit 6 outputs a signal obtained by performing D / A conversion and amplification on the TV audio signal decoded and output by the video / audio processing unit 5 to the audio output unit 8. The display control unit 7 performs control to output a TV video signal decoded by the video / audio processing unit 5 and manually output to the display unit 9 or a signal for program information.

  The input unit 10 includes various keys and operation switches, and accepts various operations related to channel selection, recording, reproduction, and the like. The storage unit 11 stores the TV video signal and TV audio signal separated as described above as recorded data of video data and audio data. The storage unit 11 is a storage medium such as a hard disk drive, which can repeat read / write random access.

  In addition, the in-vehicle broadcast recording / playback apparatus shown in FIG. 1 acquires or calculates various types of information for specifying a recorded program made up of video data and audio data stored in the storage unit 11 at the time of playback operation. It has a function to manage as information in the management table.

FIG. 2 is a diagram showing an example of a recorded program information management table stored in the storage unit 11 of the in-vehicle broadcast recording / playback apparatus according to the embodiment of the present invention in a table format.
Various information managed by the recorded program information management table includes a channel corresponding to a recorded program composed of video data and audio data stored in the storage unit 11, a recording date of the program, a recording start time, a recording end time, a program name, This is information obtained by associating the recording rate, re-broadcast supplementation presence / absence information, and storage capacity.

  The channel and program name information in the recorded program information management table is information included in the program information signal separated by the demodulation / TS processing unit 4. That is, the demodulation / TS processing unit 4 extracts channel and program name information from the program information signal and outputs the channel and program name information to the system control unit 1, and the system control unit 1 outputs the channel and program name information. Information may be associated and written to the storage unit 11 as information in the recorded program information management table.

  The recording date and the recording start time in the recorded program information management table indicate the time when the program recording consisting of video data and audio data is started, and the recording end time in the recorded program information management table is the video data and audio data. Indicates the time when the program recording consisting of These program recording start time and end time can be timed by the time counting function provided in the system control unit 1.

  In addition, the recording rate in the recorded program information management table indicates that normal reception of broadcast radio waves is included in the video / audio data written in the storage unit 11 from the recording start time to the recording end time counted as described above. The percentage of the recorded part is expressed as a percentage.

Next, the operation of the in-vehicle broadcast recording / playback apparatus having the configuration shown in FIG. 1 will be described.
FIG. 3 is a flowchart showing an example of a processing operation related to program recording of the in-vehicle broadcast recording / reproducing apparatus according to the embodiment of the present invention.

  First, when the system control unit 1 of the in-vehicle broadcast recording / playback apparatus accepts inputs such as a channel of a program to be recorded, a recording start date / time, and a recording end date / time according to a predetermined operation on the input unit 10 by the user, The input information is associated with each other, and the associated information is written in the storage unit 11 as the reserved recording setting information (step S1).

  The system control unit 1 compares the current date and time measured by the time measurement function with the recording start date and time in the reserved recording setting information written in the storage unit 11, and when the current date and time match the recording start date and time (step S2). If YES, the tuner 3 is controlled so that the channel associated with the recording start date / time information and the reserved recording setting information is selected. Then, the system control unit 1 controls the demodulation / TS processing unit 4 so that processing such as demodulation and error correction of the selected radio wave is performed, and from the demodulation / TS processing unit 4 to the video / audio processing unit The video / audio processing unit 5 is started so that the information indicated by the video signal and the audio signal input to 5 is written in the storage unit 11 as recording data composed of video data and audio data, that is, the recording process is started. Is controlled (step S3).

  The writing process of the video data and the audio data to the storage unit 11 is not limited to the case where “YES” is determined in the process of step S2 described above, and among the various buttons of the input unit 10, the “record” button, When the user operates a button for instructing the start of recording, the system control unit 1 performs demodulation / TS processing so that processing such as demodulation and error correction of the radio wave currently selected by the tuner 3 is performed. The process of controlling the unit 4 and writing the information indicated by the video signal and the audio signal input from the demodulation / TS processing unit 4 to the video / audio processing unit 5 into the storage unit 11 as video data and audio data is performed. The video / audio processing unit 5 is controlled to start.

  After starting the writing process of the video data and the audio data to the storage unit 11, the system control unit 1 displays the current date and time measured by the time measuring function and the recording end date and time in the reserved recording setting information stored in the storage unit 11. In comparison, when the current date / time matches the recording end date / time, the video / audio data writing process to the storage unit 11, which is the process started by the process of step S 3, is completed. The voice processing unit 5 is controlled (step S4).

  The process of step S4 is not limited to the case where the current date and time coincide with the recording end date and time as described above, and among the various buttons on the input unit 10, a “stop” button, that is, a button for instructing to stop recording is selected by the user. It is made even when is operated.

  The system control unit 1 determines whether the video signal and audio signal demodulated by the demodulation / TS processing unit 4 are signals demodulated through normal reception by the antenna 2 and channel selection by the tuner 3 at regular time intervals. And has a function of managing the information indicating the analysis result in association with the current time measured by the time measuring function.

  This function will be specifically described. First, the demodulation / TS processing unit 4 outputs error frequency information, which is the number of error corrections per unit time, to the system control unit 1 at regular time intervals for the video / audio signal obtained by demodulation and separation as described above. To do.

  Whenever the error frequency information output from the demodulation / TS processing unit 4 is input, the system control unit 1 has a predetermined reference value for the value of the number of error corrections per unit time indicated by this information. It is determined whether or not the time is less than the number, and information indicating the determination result and information relating the current time information measured by the time measuring function are generated.

  Based on the generated information, the system control unit 1 calculates the total time of the portion of the recorded data in which the value of the number of error corrections per unit time is less than a predetermined reference value, Percentage of time during which the number of error corrections per unit time of the video / audio signal demodulated / separated in the recording process described above is less than the reference value with respect to the time from the recording process start time to the recording process end time Is calculated (step S5). The system control unit 1 writes the calculated ratio information in the recording rate column corresponding to the recorded program name column in the recorded program information management table (see FIG. 2).

  That is, when the recording process based on the signal demodulated through the normal reception by the antenna 2 and the channel selection by the tuner 3 can always be performed from the recording start time to the recording end time, the recording rate Is 100%.

  The system control unit 1 then records the latest recording rate calculated in step S5, that is, the recording rate associated with the recording end time closest to the current time among the recording rates written in the recorded program information management table. By reading the information and determining whether or not the recording rate is 100%, the portion of the video / audio data related to the recorded program that has been written to the storage unit 11 after the abnormal reception of the broadcast radio wave is received. It is determined whether or not there is (step S6).

  If “YES” is determined in the process of step S6, the system control unit 1 determines whether or not the recording rate value read in the process of step S6 is less than a predetermined reference value (for example, 50%). Is determined (step S7). The recording rate reference value can be changed at any time by the user performing a predetermined operation on the input unit 10.

  If “YES” is determined in the process of step S7, the system control unit 1 stores the video / audio data stored in the storage unit 11 by the recording process that starts in the process of step S3 and ends in the process of step S4. Is deleted (step S8). As a result, the recorded video / audio data is automatically recorded when there are many parts recorded through abnormal reception of broadcast radio waves, that is, when there are too many abnormal parts and cannot be viewed. Therefore, unnecessary data can be deleted from the storage area of the storage unit 11 without performing a special operation on the input unit 10, thereby saving the storage capacity of the storage unit 11. Can do.

  Further, when the user performs a predetermined operation on the input unit 10, the information of the recorded program information management table stored in the storage unit 11 is displayed on the display unit 9 in a table format as shown in FIG. 2. Can do. By referring to the recording rate item shown in the read table, the user can easily grasp the size of the portion of the recorded video / audio data recorded through normal reception. Therefore, it is possible to obtain information that serves as an indication of whether or not to reproduce.

  In addition, the in-vehicle broadcast recording / playback apparatus according to the embodiment of the present invention records when a part of the video / audio data related to the recorded program is recorded through abnormal reception of the broadcast radio wave. With respect to video / audio data related to a program, only a portion recorded through abnormal reception of radio waves is cut, and the video / audio indicated by the data before and after the cut has a function of performing editing. The user can switch at any time whether to activate this function by performing a predetermined operation on the input unit 10.

  In addition, the in-vehicle broadcast recording / playback apparatus according to the embodiment of the present invention, when a part or all of the video / audio data related to the recorded program is recorded through the abnormal reception of broadcast radio waves, It has a function of supplementing normal video / audio data having the same content as the corresponding part through reception of rebroadcast of the program. Details of this function will be described below.

FIG. 4 is a flowchart showing an example of a processing operation related to the rebroadcast recording process of the recorded program of the in-vehicle broadcast recording / playback apparatus according to the embodiment of the present invention.
As described above, the demodulation / TS processing unit 4 has a function of acquiring EPG (electronic program guide) information from the separated program information signal, for example, up to 24 hours after the current time, for system control. The unit 1 obtains the EPG information (step A1), and information on each program name indicated by the EPG information and information on each program name indicated by the recorded program information management table stored in the storage unit 11 (Step A2), and by this comparison, it is determined whether or not a broadcast of a program having the same contents as a previously recorded program, that is, a so-called rebroadcast is scheduled (step A3).

  If “YES” is determined in the process of step A3, the system control unit 1 determines that the rebroadcasting is performed when the date and time counted by the timekeeping function becomes the rebroadcast start time of the already recorded program. The tuner 3 is controlled so that the channel for broadcasting the program is selected, and the demodulation / TS processing unit 4 is controlled so that the selected radio wave is demodulated and error-corrected. In addition, processing is started so that information indicated by the video signal and audio signal input from the demodulation / TS processing unit 4 to the video / audio processing unit 5 is written in the storage unit 11 as video data and audio data. The video / audio processor 5 is controlled (step A4).

  Then, after starting the writing process of the video data and the audio data to the storage unit 11, the system control unit 1 determines the current date and time measured by the time measurement function, and the recording end date and time in the EPC information stored in the storage unit 11. When the current date and time coincide with the recording end date and time, the video / audio processing is started so that the writing processing of the video data and audio data to the storage unit 11 started by the processing of step A4 is completed. The unit 5 is controlled (step A5).

  The system control unit 1 includes a portion of the rebroadcast recorded video / audio data that has been recorded through normal reception, and the content of this portion is the video / audio data recorded in the broadcast before the rebroadcast. If the content is the same as the part recorded through abnormal reception of radio waves, the recorded video / audio data of the rebroadcast corresponding to this part is the same as the video / audio data recorded in the previous broadcast. Video / audio data obtained by overwriting and updating the content portion is generated and stored in the storage unit 11 (step A6).

  By performing this process, even if the video / audio indicated by the video / audio data generated by the video recording process includes a recording abnormal part, that is, a part recorded through abnormal reception of broadcast radio waves, Based on the video / audio data obtained by recording the broadcast rebroadcast, the abnormal recording portion of the previous broadcast can be replaced with the normal recording portion.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

The block diagram which shows the structural example of the vehicle-mounted broadcast recording / reproducing apparatus according to embodiment of this invention. The figure which shows an example of the video recording program information management table memorize | stored in the memory | storage part of the vehicle-mounted broadcast recording / reproducing apparatus according to embodiment of this invention. The flowchart which shows an example of the processing operation concerning the program recording of the vehicle-mounted broadcast recording / reproducing apparatus according to the embodiment of the present invention. The flowchart which shows an example of the processing operation concerning the recording process of the rebroadcast of the recorded program of the vehicle-mounted broadcast recording and reproducing apparatus according to the embodiment of the present invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... System control part, 2 ... TV antenna, 3 ... Tuner, 4 ... Demodulation / TS processing part, 5 ... Video / audio processing part, 6 ... Audio control part, 7 ... Display control part, 8 ... Display part, 9 ... Display unit, 10... Input unit, 11.

Claims (3)

A receiving channel selection means for receiving and selecting a digital broadcast radio wave;
Recording means for recording video and audio included in the broadcast radio wave received and selected by the reception tuning means as video / audio data;
Means for generating recording quality information indicating a ratio of a portion of the video / audio data recorded by the recording unit that satisfies a predetermined quality condition;
A management means for managing the generated recording quality information in association with basic information for specifying the contents of the recorded video / audio data;
An in-vehicle terminal device comprising: display control means for performing control for displaying information managed by the management means on the display means.   The recording means specified by the basic information managed by the management means in association with the recording quality information when the ratio indicated by the recording quality information managed by the management means does not satisfy a predetermined standard 2. The in-vehicle terminal device according to claim 1, further comprising means for erasing the video / audio data recorded by the step.   2. The editing unit according to claim 1, further comprising an editing unit that edits the video / audio data recorded by the recording unit to delete only a portion whose quality does not satisfy the predetermined condition. In-vehicle terminal device.

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