JPH10126662A - News gathering camera and recording method using the camera - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a news gathering camera for gathering news or the like at a site. SOLUTION: This electronic news gathering(ENG) camera 1 that is used to gather news or the like at a site is provided with an optical disk recording and reproducing device 15 that records/reproduces a source to/from an optical disk 1a that is a usual recording medium and an IC memory card 12 that is an auxiliary recording medium tentatively storing the source. When the recording data to the optical disk 1a are fully occupied and a new optical disk 1b is being replaced, a changeover switch SW 1 is thrown to the position B to record data tentatively to the IC memory card 12 as an auxiliary recording medium. After the replacement of the optical disk is finished, usual recording is started to the newly replaced optical disk 1b. After the end of news collection, the changeover switch SW 2 is thrown to the position B' to record the source having been auxiliary recorded in the IC memory card 12 into the optical disk 1b again. Thus, loss of recording of a source on the occurrence of optical disk replacement is avoided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera for collecting news or the like on site and a recording method using the camera.

[0002]

2. Description of the Related Art At present, ENG (electronic news gathering)
ing) In a system for collecting news or the like on site, which is called a system, a recording camera (hereinafter, referred to as an ENG camera) that can be detached from a magnetic tape, an optical disk, or a hard disk device as a recording medium is used.
Then, the material tape or material disk collected by the ENG camera is sent to an editing work place, and editing for on-air is performed.

FIG. 2 shows an example of the ENG system. Note that FIG. 2 shows a configuration relating to the IC memory card 12 according to the present invention described later.
Hereinafter, FIG. 2 also refers to the description of the present invention. Optical disk 1
ENG using disks such as a and hard disk devices
The material disk or material tape 2a recorded by the camera 1 or the ENG camera 2 using the magnetic tape is temporarily or directly stored in a magazine 3 or the like, and thereafter, a field editor 5 at a coverage site 4 or an editing room 6 of a broadcasting station. Is sent to the online editor 7.

The field editor 5 includes an optical disk reproducing device, a tape reproducing device recorded by the ENG camera 2 using a tape, a hard disk device for performing non-linear editing, and the like. Then, in the field editor 5, pre-processing editing for mainly selecting a required material is performed.

[0005] The selected material is DSNG.
(Digital Satellite News Gathering) 8, phone line 1
The data is transmitted to the server system 11 in the editing room 6 of the broadcasting station via a digital network such as 0 and an analog network such as RF-link 9 and is again edited for on-air. Non-urgent materials are sent directly to the online editor 7 in the editing room 6, edited for on-air, and stored in the server system 11 via the in-house network.

Here, the server system 11 includes a storage unit 11a mainly composed of a hard disk device, and a processing unit 11 for performing input / output processing for a plurality of channels such as materials.
b, a control unit 11c mainly for performing broadcast scheduling and exchanging materials with the online editor 7.

The online editor 7 includes an optical disk reproducing device 7a, an optical disk changer 7b capable of storing a plurality of optical disks, a computer 7c, a tape reproducing device and a hard disk device (not shown). Further, an intra-office network that enables data exchange with the server system 11 is also configured.

[0008]

The above-mentioned ENG
When performing normal recording on a recording medium such as an optical disk or a hard disk device using a camera, when the normal recording on the normal recording medium loaded in the ENG camera is completed and the recording is replaced with a new normal recording medium, the recording is performed. It cannot be performed continuously. Therefore, continuous recording can be performed by loading two normal recording media into the ENG camera. However, adding one normal recording medium is not advantageous in terms of cost, space, and weight.

Further, it is necessary to continue recording normally in order to prevent the recording from being missed at a decisive moment at the time of coverage by using an ENG camera. Doing so leads to tape and power consumption.

[0010] Further, in both the conventional editing using a tape (linear editing) and the editing using a hard disk device (non-linear editing) that has become feasible in recent years, the work of reproducing the material is common, and the normal recording at the time of coverage is performed. In the case of a plurality of media, it is required to prepare a plurality of reproducing machines or to replace a normal recording medium on which recording has been completed to reproduce the medium, which complicates the editing work.

In view of the above problems at the time of reporting and editing, the present invention uses an ENG camera and a ENG camera capable of continuously photographing even when a recording medium is exchanged and reducing editing work after the reporting. It proposes a recording method.

[0012]

According to the present invention, there is provided a camera for news gathering.
The recording apparatus includes recording means for recording a material on a normal recording medium for normal recording, and recording means for recording the material on an auxiliary recording medium for temporarily auxiliary recording. Normally, the material can be continuously recorded by auxiliary recording the material on the auxiliary recording medium when the recording medium is replaced.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, the significance of the ENG camera of the present invention will be described with reference to an ENG system shown in FIG. The ENG camera 1 of the present invention can be loaded with an IC memory card 12 that is temporarily used for auxiliary recording in addition to any normal recording medium such as a magnetic tape, a hard disk device, and an optical disk 1a. And the E
The optical disk 1a and the IC memory card 12 recorded by the NG camera 1 are sent to the field editor 5 at the news gathering site 4 or the online editor 7 in the editing room 6.

An image, sound and time code as a material are recorded on a normal recording medium such as the optical disk 1a, and an image (hereinafter, referred to as an edit point mark) is recorded on the IC memory card 12 as described later. An index image), a position (time code) of the index image, and a material at the time of normal recording medium exchange are recorded.

Hereinafter, the configuration of the ENG camera 1 of the present invention will be described in detail with reference to FIG. The ENG camera 1 includes a camera head unit 13 having a lens, a prism (not shown), and a matrix circuit 13a. Also, the recording / reproducing unit compresses the image using the 4: 2: 2P encoder 14,
Changeover switches SW1 and SW2, optical disk recording / reproducing device 15, adder circuit 16, I-frame extracting circuit 17 for extracting I-frame from a signal reproduced from optical disk 1a (1b), and I-frame extracted by I-frame extracting circuit 17 Time code generator 18 for adding time code TC to frame buffer 20, frame buffer control circuit 21 for controlling the output of frame buffer 20
It is composed of

Hereinafter, the recording / reproducing operation using the ENG camera 1 having the above configuration, and the normal and auxiliary recording methods will be sequentially described.
Light incident on the ENG camera 1 loaded with the normal recording medium such as the optical disk 1a and the IC memory card 12 as the auxiliary recording medium is transmitted to the R, G, and B through a lens and a prism (not shown) of the camera head unit 13. The component signals (Y / RY / B) are separated by the matrix circuit 13a.
-Y). The component signal is, for example, an MPEG signal suitable for a signal to be recorded on the optical disc 1a.
A 4: 2: 2 profile signal having a two-video data structure is compressed by a 4: 2: 2P encoder 14 (hereinafter, referred to as an encoder 14).

Hereinafter, normal recording of the image compressed by the encoder 14 on the optical disk 1a and temporary auxiliary recording on the IC memory card 12 will be described. At the time of normal recording on the optical disk 1a, the switches SW1 and SW2 are switched to the A side and A 'side, and the output of the encoder 14 is switched so that normal recording can be performed on the optical disk 1a.
Perform normal recording at.

During normal recording, the optical disk 1a being recorded is
When the recording of the optical disk becomes full, as described above, the conventional optical disk is replaced with another optical disk and the normal recording is performed. However, since the recording cannot be continued during the exchange, the recording on the optical disk before the replacement is completed. Immediately thereafter, the changeover switch SW1 is switched to the B side, and the image being exchanged for the optical disk is temporarily auxiliary-recorded and stored in the IC memory card 12 via the addition circuit 16.

At the time when the exchange to the new optical disk 1b is completed and the recording is ready, the changeover switch SW1
Is switched to the A side, and normal recording on the new optical disk 1b is started again. Once the recording on the new optical disk 1b is completed, the changeover switch SW2 is switched to B 'side to re-record the image auxiliary recorded on the IC memory card 12 on the exchanged optical disk 1b.

The manner in which the cameraman shoots the auxiliary recording on the IC memory card 12 while operating the operating means of the ENG camera 1 will be described in detail with reference to a time chart shown in FIG. . This time chart shows the timing from when the cameraman changes to a new optical disk 1b to complete the recording and re-records the image recorded on the IC memory card on the optical disk 1b.

After the recording on the optical disk 1a is started, if the eject button for disc exchange is pressed during the normal recording on the optical disk 1a, the recording is immediately transferred to the IC memory card 12. Then, after the eject button is pressed, the optical disk 1a is actually ejected, and a new optical disk 1b is
For example, m bytes (b) corresponding to the disk exchange time t until the disk is loaded into the NG camera 1 and becomes ready for normal recording.
3) is auxiliary recorded on the IC memory card 12 and temporarily stored.

When normal recording on the newly loaded optical disk 1b becomes possible, normal recording on the new optical disk 1b is resumed. When a series of normal recording is completed, the material recorded on the IC memory card 12 is reproduced and recorded on a new optical disk 1b. At this time, the physical area to be recorded is, for example, as shown in FIG. 3 (B), for example, when the recording on the exchanged optical disk 1b is restarted, the recording capacity of the IC memory card 12 is equal to or more than m bytes. It is more advantageous to save the blank area in terms of continuous reproduction in consideration of the seek time and rotation wait. However, since the optical disk is essentially a random access memory, there is no need to stick to this recording mode.

Next, as shown in FIG. 4, the IC memory card 12 is inserted into a FIFO (first in first out).
t) When used as a memory, it is possible to buffer moving images of the capacity of the IC memory card without recording the material before the start of the normal recording or the material after the stop of the normal recording on the optical disc. In this case, the image is written to the IC memory card 12 by switching the switch SW1 to the B side in FIG. When the writing to the address of the IC memory card 12 becomes full, the address returns to the start address, and the oldest one is overwritten sequentially. As a result, recording of unnecessary images on the optical disk 1a can be reduced, photographing can be performed prior to normal recording, and effective use of the optical disk can be achieved.

When the recording on the optical disk 1a is started again, the switch SW2 is turned on when the recording is completed.
To the B 'side, the material auxiliary recorded on the IC memory card 12 is re-recorded on the optical disk 1a. At this time, the re-recording from the IC memory card 12 is performed when the data is overwritten halfway of the IC memory card 12.
The first write address pointer to be re-recorded is detected, recording to the optical disc is started from this, the return to the head address is performed, and the re-recording is completed by the address pointer.

Next, the material photographed by the ENG camera 1 is edited for on-air as described above.
An embodiment in which an image (index image) serving as a mark of an editing point and a time code (TC) are stored in the IC memory card 12 to enable offline editing while referring to these, with reference to FIG. explain.

Optical disk 1 loaded in ENG camera 1
The material from the ENG camera 1 is sequentially recorded on a by a recording head. During this recording, when the photographer presses a trigger button provided on the ENG camera 1 as a mark image, the index image reproduced from the optical disk 1a and the time code (TC) are recorded on the IC memory card 12. Further, a trigger signal may be automatically generated at the start of recording.

The recording on the IC memory card 12 is performed by E
An NG camera 1 is provided with a recording head R and a reproducing head P for reproducing simultaneously with recording in an optical disk recording / reproducing device 15, and a trigger signal is generated by pressing a recording start button or a cue button. To take out the image recorded independently.

An image taken out from the optical disk 1a is composed of a GOP (Group of Picture) starting from an I frame having a video data structure of MPEG2. The time code (TC) extracted at 17 and generated by the time code generator 18 is added to the head of the I frame. The I-frame image 19 to which the time code (TC) is added is temporarily stored in the frame buffer 20 and then recorded on the IC memory card 12 via the adding circuit 16.

At this time, when another signal is written to the IC memory card 12 via the changeover switch SW1, the frame buffer control circuit 21 controls the frame buffer 20 so that the signal is not output from the frame buffer 20. Avoid collisions with signals.

As described above, in the process of photographing the material to be covered, the IC memory card 12 is loaded into the ENG camera 1 and the still image is recorded together with the time code, so that the offline rough editing by the still image can be performed. It becomes possible, and the equipment and time for editing can be validated.

In order to realize each purpose of recording on the IC memory card 12, the memory area of the IC memory card 12 is divided into addresses. For example, as shown in FIG. 5, when a 32 MB IC memory card 12 that can be purchased is used,
25M as temporary buffer area for temporary auxiliary recording
B, divided into 7 MB as an index image area including a time code area. When divided in this way, 20 Mb
When the moving image of it / s is 10 seconds, and when all the frames are composed of only I frames (GOP = 1), about 83 frames of still images can be recorded. It has sufficient practicality as a memory card.

As described above, by installing an IC memory card in an ENG camera and collecting information, the photographer selects one of the three recording modes as described above, thereby preventing omission of photographing when replacing a recording medium during normal recording. , It is possible to cope with the selection of the index image necessary for the preceding shooting on the IC memory card and the rough editing.

[0033]

According to the present invention, an auxiliary recording medium for temporarily performing auxiliary recording in a news gathering camera is loaded together with a normal recording medium to record a material. This makes it possible to selectively prevent omission of shooting, pre-shooting on an auxiliary recording medium, and recording of index images required for rough editing.

[Brief description of the drawings]

FIG. 1 is a block diagram of a main part of a camera for news gathering of the present invention.

FIG. 2 is an explanatory diagram of an ENG system.

FIG. 3 is a time chart and an example of a physical area recorded on an optical disc in one usage example of the camera for news gathering of the present invention.

FIG. 4 is an explanatory diagram when an IC memory card to be loaded into the camera for coverage according to the present invention is used as a FIFO memory.

FIG. 5 is a diagram showing an example of address division of an IC memory card loaded in the camera for news gathering of the present invention.

[Explanation of symbols]

1, 2, ENG camera 12, IC memory card
15. Optical disk recording / reproducing device

Claims (11)

[Claims] 1. A news gathering camera comprising: recording means for recording a material on a normal recording medium for normally recording; and recording means for temporarily recording the material on an auxiliary recording medium for auxiliary recording. 2. The coverage camera according to claim 1, further comprising a recording unit changeover switch for switching between a recording unit for recording on the normal recording medium and a recording unit for recording on the auxiliary recording medium. 3. The camera according to claim 1, wherein the auxiliary recording medium is an IC memory card. 4. The camera according to claim 1, wherein the normal recording medium is a magnetic tape, an optical disk, or a hard disk device. 5. A recording method using a news gathering camera comprising a recording means for recording a material on a normal recording medium for normally recording the material, and a recording means for recording the material on an auxiliary recording medium for temporarily temporarily recording the material. Recording on the auxiliary recording medium while replacing the normal recording medium with a new normal recording medium, and starting recording on the newly replaced normal recording medium after the replacement is completed. . 6. The recording method according to claim 5, wherein said auxiliary recording medium is an IC memory card. 7. The recording method according to claim 5, wherein the material recorded on the auxiliary recording medium is re-recorded on the new normal recording medium. 8. A recording method using a news gathering camera, comprising: a recording unit for recording on a normal recording medium for normal recording; and a recording unit for recording on an auxiliary recording medium for temporarily performing auxiliary recording. A recording method characterized by recording a still image of a material required for editing while adding a time code to the auxiliary recording medium during recording on a normal recording medium. 9. The recording method according to claim 8, wherein said auxiliary recording medium is an IC memory card. 10. A recording method using a news gathering camera comprising a recording unit for recording on a recording medium for normal recording and a recording unit for temporarily recording on an auxiliary recording medium for auxiliary recording, A recording method, wherein a recording medium is a FIFO memory, and a material before starting recording on the normal recording medium is recorded on the FIFO memory. 11. The recording method according to claim 10, wherein the material recorded in the FIFO memory is re-recorded on the normal recording medium.