JP2006179064A - Recording/reproducing device and its reproduction control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the hung-up of a PC caused by inputting to the PC a signal format different from a driver read by the PC in a recording/reproducing device equipped with the recording/reproducing function of mixing a plurality of signal formats to perform recording/reproducing and the communication function of establishing connection with an external device to output a reproducing signal. <P>SOLUTION: In a video system 500 configured by connecting a camcoder having a function of transferring a video or control signal and a PC 200 via an IEEE 1394 cable 300, the camcoder 100 for mixing a plurality of signal formats via a recording medium to record/reproduce a signal stores a signal format recognized by establishing connection with the PC 200, starts reproduction, then stops the output of a reproducing signal when a part recorded in a signal format different from the stored format is reached, skips to a part recorded in a next stored signal format, and starts the output of a reproducing signal. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a recording / reproducing apparatus having a recording / reproducing function for recording and reproducing a signal by mixing a plurality of signal formats via a recording medium, and a communication function for establishing a connection with an external device and outputting a reproduced signal, and the same The present invention relates to a playback control method.

  2. Description of the Related Art Conventionally, when recording a movie program to be broadcasted on a video tape recording / playback device, the recording is stopped only during the CM broadcast in order to cut the CM that is frequently inserted in the main part of the program. ing. In addition, a CM is also cut when dubbing a recorded program without cutting the CM (see, for example, Patent Document 1).

  In addition, there is the IEEE 1394 standard as a high-speed serial bus standard that enables connection between digital devices such as digital cameras as well as peripheral devices of a personal computer (PC). IEEE 1394 provides a plug-and-play compatible expansion interface for PCs and has an ideal transmission mode that guarantees bandwidth for consumer audio / video (A / V) devices, storage peripherals and portable devices. Up to 63 devices can be daisy chained or tree-connected, and the transfer rates are standardized at 100 Mbps, 200 Mbps, and 400 Mbps. In IEEE 1394, devices can be inserted and removed during operation (hot plugging), and power can be supplied via a connection cable.

  Furthermore, a basic specification of the HDV standard that enables recording and reproduction of digital high definition (HD) video using the current DV standard cassette tape has been formulated. The HDV standard supports the 720p (progressive) and 1080i (interlace) formats, compresses video with MPEG2, and records and reproduces HD video with high definition at the same bit rate as using DV standard SD (intraframe compression). It is possible.

JP-A-1-196758

  By the way, in the technique disclosed in Patent Document 1, once a whole program is recorded, only a necessary part is reproduced and an unnecessary part (such as a CM) is fast-forwarded. Setting is necessary, and recording contents are not discriminated by the device.

  Further, when a device capable of outputting a plurality of signal formats, such as an HDV device, is connected to a PC using the IEEE1394 interface, the PC receives a signal in a format different from the format selected at the time of connection (driver is read). There was a problem of hanging up.

  Therefore, in view of the conventional problems as described above, an object of the present invention is to establish a connection with an external device and a recording / reproducing function for recording and reproducing a signal by mixing a plurality of signal formats via a recording medium. In a recording / reproducing apparatus having a communication function for outputting a reproduction signal, it is to avoid a hang-up of the PC when a signal format different from that of a driver read by the PC is input to the PC. Another object of the present invention is to make it possible to collect contents of a plurality of formats recorded on a medium for each same format.

  Other objects of the present invention and specific advantages obtained by the present invention will become more apparent from the description of embodiments described below.

  The present invention is a recording / reproducing apparatus having a recording / reproducing function for recording and reproducing a signal by mixing a plurality of signal formats via a recording medium, and a communication function for establishing a connection with an external device and outputting a reproduced signal. The signal format recognized by establishing the connection with the external device is memorized and playback is started.When the part that was recorded with a signal format different from the memorized format is applied, the playback signal output is stopped, Next, it is provided with a reproduction control means for skipping to the portion recorded in the stored signal format and starting outputting the reproduction signal therefrom.

  The present invention also relates to a recording / reproducing apparatus having a recording / reproducing function for recording and reproducing a signal by mixing a plurality of signal formats via a recording medium, and a communication function for establishing a connection with an external device and outputting a reproduced signal. Is a playback control method in which a signal format recognized by establishing a connection with an external device is stored, and after playback is started, if a portion recorded in a signal format different from the stored format is applied, the playback signal The output is stopped, the next recorded signal format is skipped, and the output of the reproduction signal is started from there.

  According to the present invention, a recording / reproducing apparatus having a recording / reproducing function for recording and reproducing a signal by mixing a plurality of signal formats via a recording medium, and a communication function for establishing a connection with an external device and outputting a reproduced signal When the PC is connected to the PC, it is possible to avoid a PC hang-up caused by a signal format different from that of the driver read by the PC being input to the PC. In addition, contents of a plurality of formats recorded on the medium can be collectively fetched for each same format. Further, in this case, setting of editing points or the like is not required in advance.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Needless to say, the present invention is not limited to the following examples, and can be arbitrarily changed without departing from the gist of the present invention.

  The present invention is applied to, for example, a video system 500 configured as shown in FIG.

  This video system 500 includes a camcorder 100 and a personal computer (PC) 200 having a function of transmitting and receiving video signals and control signals via a communication interface compliant with the IEEE 1394 standard, which is a high-speed serial bus standard, via an IEEE 1394 cable 300. Connected.

  As shown in the block diagram of FIG. 2, the camcorder 100 complies with the HDV standard for recording and reproducing signals by mixing a plurality of signal formats such as HDV format and DV format via the recording medium 50. A recording / reproducing apparatus having a recording / reproducing function conforming to the above and a communication function conforming to the IEEE 1394 standard for establishing a connection with an external device such as the PC 200 and outputting a reproduction signal, and an imaging unit 10 for photographing a subject, The video signal obtained by the imaging unit 10 is recorded on the recording medium 50, the recording / reproducing unit 20 that reproduces the video signal from the recording medium 50, and the control unit 30 that controls the operation of the imaging unit 10 and the recording / reproducing unit 20. And communication conforming to the IEEE 1394 standard for establishing a connection with an external device such as the PC 200 to exchange control signals and video signals. Consisting of centers face portion 40, and the like.

  The imaging unit 10 includes a camera unit 11 and a camera control unit 12 to which the camera unit 11 is connected. A video signal obtained as an imaging output obtained by imaging the subject by the camera unit 11 is transmitted via the camera control unit 12 to the control unit. 30 signal controllers 33 are supplied.

  The recording / reproducing unit 20 records and reproduces video signals of a plurality of signal formats such as HDV format and DV format supplied from the signal control unit 33 of the control unit 30, and is controlled by the mechanical control unit 21. A mechanical unit 22 is provided, and video signals are recorded and reproduced via a recording medium 50 that is detachably attached to the mechanical unit 22.

  The control unit 30 includes a signal control unit 33 to which an LCD display panel 31 and an electronic viewfinder 32 are connected, an input / output terminal 34 connected to the signal control unit 33, a user I / F processing unit 35, a memory 36, and the like. In accordance with control information given through the user I / F processing unit 35 or the communication interface unit 40, the video signal supplied from the imaging unit 10 is displayed on the monitor by the LCD display panel 31 or the electronic viewfinder 32, The video signal is converted into a video signal of a plurality of signal formats such as HDV format and DV format by the signal control unit 33 and supplied to the recording / reproducing unit 20 and the communication interface unit 40.

  The communication interface unit 40 includes a 1394 processing unit 42 connected to an external device via a 1394 terminal 41.

  The camcorder 100 is an HDV device capable of outputting HDV (MPEG) / DV as described above. As shown in FIG. 3, an example of the mode setting screen is shown in FIG. The DV mode can be set in three types of modes.

  Normally, as shown in FIG. 4A, when an HDV device is recorded on a recording medium 50 in a state where a video signal of HDV (MPEG) format and a video signal of DV mode are mixed, As shown in FIG. 4B, the output is performed according to the recording format recorded on the recording medium 50. In the HDV mode, as shown in FIG. On the contrary, in the DV mode, as shown in FIG. 4D, a DV dummy signal is output at the time of MPEG recording partial reproduction.

  In this video system 500, the PC 200 is recognized as an MPEG device in the auto mode if it is in a state equivalent to MPEG tape playback at the time of connection by the mode setting of the camcorder 100, and is in a state equivalent to DV tape playback at the time of connection. If it exists, it is recognized as a DV device. In the HDV mode, only an MPEG signal is output, so that it is recognized as an MPEG device. In the DV mode, only a DV signal is output, so that it is recognized as a DV device.

  Here, an example of a procedure when the PC 200 selects a driver is shown in the flowchart of FIG.

  That is, the PC 200 repeatedly determines whether or not a 1394 connection has been detected by detecting a bias signal or a bus reset (step S1), and when detecting a 1394 connection, transmits various commands (step S2). The response of the command is determined (step S3), and either one of the MPEG driver / DV driver is selected and read (steps S4 and S5).

  As described above, when one of the MPEG driver / DV driver is selected and read in the PC 200 in accordance with the flow chart shown in FIG. 5, for example, if the mode setting of the camcorder 100 is set to auto, 6 and FIG. 7, when a mixed media of a plurality of formats is reproduced, the output signal changes according to the recording format. Therefore, when the camcorder 100 outputs a signal other than the driver selected on the PC 200 side, the PC 200 hangs up. End up.

  As shown in FIG. 8 and FIG. 9, when the mode setting of the camcorder 100 is the HDV mode or the DV mode, the PC 200 does not hang up because no output other than a predetermined format is output.

  Therefore, in the camcorder 100 in the video system 500, the recording / reproducing unit 20 stores the signal format recognized by establishing the connection with the PC 200 via the communication interface unit 40 in the memory 36 of the control unit 30. After starting playback, when it reaches the part recorded with a signal format different from the stored format, output of the playback signal is stopped, and then the part recorded with the stored signal format is skipped and playback is started from there. Start signal output.

  That is, as shown in the flowchart of FIG. 10, when the reproduction operation is started in the auto mode, first, the DV mode or the MPEG mode is selected, and the setting format of the selected operation mode is determined (step S11). It is determined whether or not the recording mode of the video signal to be reproduced recorded on the recording medium 50 matches (step S12).

  If the result of determination in step S12 is that the recording mode of the video signal to be reproduced matches the set format, it is determined whether or not it is a media end (step S13), and steps S12 and S13 are performed. By repeating, the playback process in the playback format is performed. When the end of the media is reached, the playback end process is performed (step S14), and the playback operation is ended.

  If the result of determination in step S12 is that the recording mode of the video signal to be reproduced does not match the set format, a process of skipping the video signal in the recording mode that does not match the setting format is performed (step S15) It is determined whether or not the recording mode of the video signal to be reproduced after the skip processing matches the set format (step S16).

  If the result of determination in step S16 is that the recording mode of the video signal to be reproduced matches the set format, the reproduction process is resumed (step S17), and the process returns to the determination process in step S12.

  If the result of determination in step S16 is that the recording mode of the video signal to be reproduced does not match the set format, it is determined whether or not it is a media end (step S18).

  If the result of determination in step S16 is not a tape end, the process returns to the determination process of step S12. If it is a tape end, reproduction end processing is performed (step S19), and the reproduction operation is performed. finish.

  Thus, in the auto mode, the operation differs depending on whether MPEG is first selected or DV is selected.

  As an example of the selection method, it is determined based on which of DV / MPEG is being played back when the 1394 connection is detected or on which device state is being set.

  When DV is selected, the DV recording portion is played back as usual, and when it is detected that it has entered the MPEG recording portion, output to the communication interface unit 40 is stopped, and if necessary, a DV dummy signal is output. Next, when the next DV recording portion is found and detected by fast-forwarding or high-speed reproduction, the normal reproduction is resumed, and the output to the communication interface unit 40 is also resumed. When a recording format change point is detected, a process for accurately cuing may be performed such as fast forward, rewind playback, and playback.

  In this way, by preventing signals other than the selected signal from being output to the communication interface unit 40, it is possible to prevent the PC 200 from hanging up.

  The detection of the recording signal and the change point of the recording format can be discriminated from the reading of the signal recorded on the recording medium 50 even during fast-forwarding.

  Next, in the HDV mode, only the MPEG recording portion is reproduced and the DV recording portion is skipped.

  Similarly, in the DV mode, only the DV recording portion is reproduced and the MPEG recording portion is skipped.

  Examples of skip reproduction in each mode are shown in FIGS.

  As described above, an image formed by connecting the camcorder 100 having a function of transmitting and receiving a video signal and a control signal via the communication interface compliant with the IEEE 1394 standard, which is a high-speed serial bus standard, and the PC 200 via the IEEE 1394 cable 300. In the system 500, the signal format recognized by the camcorder 100 having a recording / reproducing function for recording / reproducing a signal by mixing a plurality of signal formats via the recording medium 50 by establishing the connection with the PC 200 as an external device. After storing and starting playback, stop playback of the playback signal when it reaches a part recorded in a signal format different from the stored format, and skip to the part recorded in the next stored signal format. Playback signal output from the Da 100 when connected to the PC200, can signal format different from the read driver PC200 to avoid PC200 hang by means of inputting the PC200. In addition, the PC 200 can collect contents of a plurality of formats recorded on the recording medium 50 for each same format.

It is a block diagram which shows the structure of the video system to which this invention is applied. It is a block diagram which shows the principal part structure of the camcorder in the said video system. It is a figure which shows the example of the mode setting screen in the said camcorder. It is a figure which shows the example of an output in each mode reproduced | regenerated from the recording medium in the said camcorder. It is a flowchart which shows an example of the procedure at the time of PC in the said video system selecting a driver. It is a figure which shows an example of the setting state in which PC in the said video system hangs up. It is a figure which shows the other example of the setting state in which PC in the said video system hangs up. It is a figure which shows an example of the setting state which PC does not hang up in the said video system. It is a figure which shows the other example of the setting state which does not hang up PC in the said video system. It is a flowchart which shows the control procedure of reproduction | regeneration operation | movement in the auto mode of the said camcorder which avoided the hang-up of the said PC. It is a figure which shows the example of the skip reproduction | regeneration in each mode of the camcorder in the said video system.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 Imaging part, 11 Camera part, 12 Camera control part, 20 Recording / reproducing part, 21 Mechanical control part, 22 Mechanical part, 30 Control part, 31 LCD display panel, 32 Electronic viewfinder, 33 Signal control part, 34 Input / output terminal , 35 User I / F processing unit, 36 Memory, 40 Communication interface unit, 41 1394 terminal, 42 1394 processing unit, 50 Recording medium, 100 Camcorder, 200 Personal computer (PC), 300 IEEE 1394 cable, 500 Video system

Claims (2)

A recording / reproducing apparatus having a recording / reproducing function for recording and reproducing a signal by mixing a plurality of signal formats via a recording medium, and a communication function for establishing a connection with an external device and outputting a reproduced signal,
Stores the signal format recognized by establishing a connection with the external device, starts playback, stops output of the playback signal when it reaches a part recorded with a signal format different from the stored format, and then A recording / reproducing apparatus comprising: a reproduction control unit that skips to a portion recorded in a stored signal format and starts outputting a reproduction signal therefrom. This is a playback control method in a recording / playback apparatus having a recording / playback function for recording and playback of signals by mixing a plurality of signal formats via a recording medium, and a communication function for establishing a connection with an external device and outputting a playback signal. And
Stores the signal format recognized by establishing a connection with an external device,
After starting playback, if it reaches a portion recorded in a signal format different from the stored format, output of the playback signal is stopped, and then the portion recorded in the stored signal format is skipped and the playback signal is output from there. The reproduction control method is characterized by starting output of.

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