JP4371590B2 - Recording system and recording apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention is related to a recording apparatus for recording the AV data transmitted from the imaging apparatus for transmitting AV data (Audio Video) including video data and audio data on a recording medium.
[0002]
[Prior art]
In recent years, a camera-integrated digital video recorder (hereinafter referred to as an imaging device) having a digital communication interface (hereinafter referred to as an IEEE 1394 interface) compliant with the IEEE 1394-1995 standard has been developed. In an imaging apparatus provided with an IEEE 1394 interface, AV data captured by the imaging apparatus can be digitally output from the IEEE 1394 interface in the camera mode.
[0003]
Recently, an external recording apparatus for recording AV data digitally output from an IEEE1394 interface provided in the imaging apparatus has been developed.
[0004]
[Problems to be solved by the invention]
However, the conventional external recording device cannot automatically record the same AV data recorded by the imaging device. For this reason, the user has to instruct the imaging apparatus to start recording, and at the same time to instruct the external recording apparatus to start recording, which has a problem that the operation is complicated and the load on the user is large.
[0005]
The present invention has been made in view of the above problems, and an object thereof is also to be recorded automatically external recording device AV data capturing apparatus records.
[0006]
[Means for Solving the Problems]
Recording system according to the present invention is a recording system including an imaging device for transmitting AV data including video data and audio data, and a recording device for receiving the AV data transmitted from the imaging device, wherein The imaging apparatus includes a first communication unit that transmits the AV data and a first recording unit that records the AV data on a first recording medium, and the recording device receives the AV data. Second communication means, second recording means for recording the AV data on a second recording medium, and data indicating the operating state of the imaging device are acquired from the imaging device, and the operating state of the imaging device There and a judging means for judging whether a recording state, when the operation state of the imaging apparatus is determined to be in the recorded state, the second recording means, wherein the AV data second Record Recorded in the body, the operating state of the image pickup device if it is determined not in the recorded state, the second recording means to stop recording on the second recording medium of the AV data .
[0007]
The recording apparatus according to the present invention is an imaging apparatus having first communication means for transmitting AV data including video data and audio data, and first recording means for recording the AV data on a first recording medium. Second communication means for receiving the transmitted AV data, second recording means for recording the AV data on a second recording medium, and data indicating an operation state of the imaging apparatus are acquired from the imaging apparatus. to, and a determination means for operating state of the image pickup device to determine whether a recording state, when the operation state of the imaging apparatus is determined to be in the recorded state, the second recording means , the AV data recorded in the second recording medium, when the operation state of the imaging apparatus is determined not in the recorded state, the second recording means, before Symbol of a V data and the second Stop recording to the recording medium It is characterized by stopping .
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0010]
FIG. 1 is a diagram for explaining a recording system according to the present embodiment. In FIG. 1, reference numeral 100 denotes a camera-integrated digital video recorder (hereinafter referred to as an imaging device), and 120 denotes an external recording device that records AV data digitally output from the imaging device 100.
[0011]
Next, the configuration of the imaging apparatus 100 according to the present embodiment will be described with reference to FIG. In FIG. 1, 101 is an imaging unit, 102 is a microphone, 103 is a recording / reproducing unit, 104 is a recording medium, 105 is a control unit, 106 is a communication unit, and 107 is an operation unit.
[0012]
The imaging apparatus 100 includes a camera mode and a VCR mode. The user can operate the operation unit 107 to select the camera mode or the VCR mode.
[0013]
When the camera mode is selected, the control unit 108 operates the imaging unit 101 and the microphone 102 to start imaging of AV data, and sets the recording / reproducing unit 103 to a recording state or a recording pause state. At this time, when the external recording device 120 is connected to the communication unit 106, the control unit 108 digitally outputs the AV data generated by the recording / playback unit 103 from the communication unit 106. In this mode, the user can operate the operation unit 107 to set the recording / reproducing unit 103 to a recording state or a recording pause state.
[0014]
When the VCR mode is selected, the control unit 108 stops the operation of the imaging unit 101 and the microphone 102 and operates the recording / reproducing unit 103. In this mode, the user can play back, pause playback, fast forward or rewind AV data recorded on the recording medium 104 by operating the operation unit 107.
[0015]
In the camera mode, the imaging unit 101 captures an optical image of a subject and generates digital video data. The digital video data generated by the imaging unit 101 is supplied to the recording / reproducing unit 103. In the camera mode, the microphone 102 collects external sound and generates digital audio data. Digital audio data generated by the microphone 102 is supplied to the recording / reproducing unit 103.
[0016]
The recording / playback unit 103 generates AV data compliant with a data format (for example, SD (Standard Definition) format) defined by a home digital VCR system (hereinafter, DV system) formulated by HD DIGITAL VCR CONFERENCE. This AV data includes digital video data generated by the imaging unit 101, digital audio data generated by the microphone 102, and additional data related thereto.
[0017]
AV data recorded on the recording medium 104 by the recording / reproducing unit 103 or AV data reproduced from the recording medium 104 by the recording / reproducing unit 103 is supplied to the communication unit 106.
[0018]
The communication unit 106 includes a digital communication interface that conforms to the IEEE 1394-1995 standard. When the external recording device 120 is connected to the communication unit 106 and the communication unit 106 is ready for digital output, the communication unit 106 performs recording / playback according to a predetermined communication protocol (for example, a communication protocol compliant with the IEC61883 standard). The AV data supplied from the unit 103 is digitally output.
[0019]
A procedure in which the imaging apparatus 100 according to the present embodiment digitally outputs AV data that conforms to the SD format of the 525-60 system (NTSC system) in accordance with a communication protocol that conforms to the IEC61883 standard will be described with reference to FIG.
[0020]
First, as shown in FIGS. 3A and 3B, the communication unit 106 generates ten DIF sequences from one frame of AV data supplied from the recording / reproducing unit 103. Each DIF sequence includes a header section, a subcode section, a VAUX section, and an audio & video section, as shown in FIG. Digital video data and digital audio data are stored in the audio & video section.
[0021]
Next, as shown in FIGS. 3D and 3E, the communication unit 106 generates 150 DIF blocks from each DIF sequence, and generates an isochronous packet for each of the 6 DIF blocks. Each isochronous packet is digitally output every 125 μs in accordance with an isochronous transfer method defined in the IEEE 1394-1995 standard.
[0022]
Next, the configuration of the external recording apparatus 120 according to the present embodiment will be described with reference to FIG. In FIG. 1, 121 is a communication unit, 122 is a recording unit, 123 is a recording medium, 124 is an operation unit, and 125 is a control unit.
[0023]
Similar to the communication unit 106, the communication unit 121 includes a digital communication interface that conforms to the IEEE 1394-1995 standard. The communication unit 121 digitally inputs AV data digitally output from the communication unit 106 of the imaging apparatus 100 according to a predetermined communication protocol (for example, a communication protocol compliant with the IEC61883 standard). The communication unit 121 receives the isochronous packet illustrated in FIG. 3E every 125 μs, generates AV data illustrated in FIG. 3A, and supplies the AV data to the recording unit 122.
[0024]
The recording unit 122 records the AV data supplied from the communication unit 121 on the recording medium 123. Note that the data format of AV data recorded on the recording medium 123 by the external recording device 120 is the same as the data format of AV data recorded on the recording medium 104 by the imaging device 100. In the present embodiment, the recording medium 123 is a recording medium such as a magnetic disk, an optical disk, or a hard disk.
[0025]
Next, the processing procedure of the external recording apparatus 120 according to the present embodiment will be described with reference to FIG. The storage medium provided in the control unit 125 stores a control program for causing the microcomputer provided in the control unit 125 to execute the processing procedure illustrated in FIG.
[0026]
First, in step S201, the control unit 125 determines whether or not the communication unit 121 is ready for digital input. When the imaging apparatus 100 is connected to the communication unit 121, the communication unit 121 notifies the control unit 125 that digital input is enabled.
[0027]
Next, in step S <b> 202, the control unit 125 detects the current operation state of the imaging apparatus 100. Specifically, first, the control unit 125 generates a command for inquiring about the current operation state, and transmits the command to the imaging apparatus 100. The control unit 105 of the imaging apparatus 100 detects a current operation state, generates a response storing data indicating the current operation state, and transmits the response to the external recording device 120. The above commands and responses are digitally output according to a communication protocol compliant with the IEC61883 standard, for example.
[0028]
In step S203, the control unit 125 determines whether or not the current operation state of the imaging apparatus 100 is a recording state. If it is in the recording state, the process proceeds to step S204, and if not, the process proceeds to step S205.
[0029]
In step S204, the control unit 125 controls the communication unit 121 to input the AV data digitally output from the imaging apparatus 100, and controls the recording unit 122 to store the AV data supplied from the communication unit 121 as a recording medium. 123. After a predetermined time has elapsed, the control unit 125 proceeds to step S201, and detects the current operation state of the imaging apparatus 100 again.
[0030]
On the other hand, in step S205, the control unit 125 controls the recording unit 122 to stop recording AV data supplied from the communication unit 121. After a predetermined time has elapsed, the control unit 125 proceeds to step S201, and detects the current operation state of the imaging apparatus 100 again.
[0031]
As described above, according to the external recording device 120 according to the present embodiment, the operation state of the imaging device 100 is periodically detected, and when the imaging device 100 is in the recording state, the imaging device 100 performs digital When the output AV data is recorded and the image capturing apparatus 100 is not in the recording state, the AV data digitally output from the image capturing apparatus 100 can be prevented from being recorded. The same can be recorded automatically. In addition, since it is not necessary to operate both the imaging device 100 and the external recording device 120 at the same time, the burden on the user can be reduced.
[0032]
It should be noted that the shapes and structures of the respective parts shown in the above embodiments are merely examples of implementation in carrying out the present invention, and these limit the technical scope of the present invention. It should not be interpreted. That is, the present invention can be implemented in various forms without departing from the main features.
[0033]
For example, the data format of AV data according to the present embodiment is not limited to a data format compliant with the DV system. It may be a data format compliant with the MPEG2 transport stream system.
[0034]
In addition, software for realizing the functions of the above-described embodiments for a computer in an apparatus or a system connected to the various devices so that the various devices are operated to realize the functions of the above-described embodiments. A program implemented by operating the various devices according to a program stored in a computer (CPU or MPU) of the system or apparatus is also included in the scope of the present invention.
[0035]
In this case, the program code itself of the software realizes the functions of the above-described embodiment, and the program code itself and means for supplying the program code to the computer, for example, the program code are stored. The recorded medium constitutes the present invention. As a recording medium for storing the program code, for example, a floppy disk, a hard disk, an optical disk, a magneto-optical disk, a CD-ROM, a magnetic tape, a nonvolatile memory card, a ROM, or the like can be used.
[0036]
Further, by executing the program code supplied by the computer, not only the functions of the above-described embodiments are realized, but also the OS (operating system) or other application software in which the program code is running on the computer. Needless to say, the program code is also included in the embodiment of the present invention even when the functions of the above-described embodiment are realized in cooperation with the above.
[0037]
Further, after the supplied program code is stored in the memory provided in the function expansion board of the computer or the function expansion unit connected to the computer, the CPU provided in the function expansion board or function expansion unit based on the instruction of the program code Needless to say, the present invention also includes the case where the functions of the above-described embodiment are realized by performing part or all of the actual processing.
[0038]
【The invention's effect】
As described above, according to the present invention, AV data recorded by the imaging apparatus can be automatically recorded on the external recording apparatus.
[Brief description of the drawings]
FIG. 1 is a block diagram illustrating a recording system according to an embodiment.
FIG. 2 is a flowchart illustrating a processing operation of the external recording apparatus according to the present embodiment.
FIG. 3 is a diagram illustrating AV data digitally output from the imaging apparatus according to the present embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 101 Image pick-up part 102 Microphone 103 Recording / reproducing part 104 Recording medium 105 Control part 106 Communication part 107 Operation part 120 External recording device 121 Communication part 122 Recording part 123 Recording medium 124 Operation part 125 Control part

Claims (6)

A recording system comprising an imaging device for transmitting AV data including video data and audio data, and a recording device for receiving the AV data transmitted from the imaging device,
The imaging device
First communication means for transmitting the AV data;
First recording means for recording the AV data on a first recording medium;
Have
The recording device comprises:
Second communication means for receiving the AV data;
Second recording means for recording the AV data on a second recording medium;
Acquires data indicating the operating state of the imaging device from the imaging device, a judging means for operating state of the image pickup device to determine whether a recording state
Have
When it is determined that the operation state of the imaging apparatus is a recording state, the second recording unit records the AV data on the second recording medium ,
When it is determined that the operation state of the imaging apparatus is not a recording state, the second recording unit stops recording the AV data on the second recording medium . The first communication means and said second communication means, recording system according to claim 1, characterized in that the communication means conforming to the IEEE1394-1995 standard. The recording apparatus acquires data indicating the operation state of the imaging apparatus from the imaging apparatus by transmitting a command for inquiring the operation state of the imaging apparatus to the imaging apparatus. Or the recording system of 2. Receiving the AV data transmitted from an imaging apparatus having a first communication means for transmitting AV data including video data and audio data, and a first recording means for recording the AV data on a first recording medium. A second communication means for
Second recording means for recording the AV data on a second recording medium;
Acquires data indicating the operating state of the imaging device from the imaging device, a judging means for operating state of the image pickup device to determine whether a recording state
Have
When it is determined that the operation state of the imaging apparatus is a recording state, the second recording unit records the AV data on the second recording medium ,
If the operation state of the imaging apparatus is determined not in the recorded state, the second recording means, before recording system, characterized by stopping the recording to the second recording medium A V data. The second communication means, recording apparatus according to claim 4, characterized in that the communication means conforming to the IEEE1394-1995 standard. The data indicating the operation state of the imaging apparatus is acquired from the imaging apparatus by transmitting a command for inquiring the operation state of the imaging apparatus to the imaging apparatus. Recording device.

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