JP4390183B2 - Remote video transmission device - Google Patents

Remote video transmission device Download PDF

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Publication number
JP4390183B2
JP4390183B2 JP2003337338A JP2003337338A JP4390183B2 JP 4390183 B2 JP4390183 B2 JP 4390183B2 JP 2003337338 A JP2003337338 A JP 2003337338A JP 2003337338 A JP2003337338 A JP 2003337338A JP 4390183 B2 JP4390183 B2 JP 4390183B2
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Japan
Prior art keywords
moving image
thumbnail image
unique id
device
transmitting
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JP2003337338A
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JP2005109640A (en
Inventor
康之 中島
茂之 酒澤
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Kddi株式会社
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Description

  The present invention relates to a remote video transmission device, and in particular, acquires information about a moving image acquired by a remote transmitting device to a receiving device via a network, thereby obtaining a moving image existing at a remote location. The present invention relates to a remote video transmission apparatus that enables the above.

  To obtain a moving image that exists in a remote location, the receiving device calls the operation screen of the remote transmitting device and performs an instruction on the operation screen to remotely operate the transmitting device and receive the moving image. There is a system to do.

In addition, like a remote file folder display on a personal computer (PC), a moving image file list existing in a remote transmitting device is transmitted, or a thumbnail image (sample) that is metadata of moving images is received from a receiving device. There is also a system that requests and transmits (image) every time.
JP 2002-218131 A JP 2003-179787 A

  However, in a system in which the receiving device calls the operation screen of the remote transmitting device and remotely operates the transmitting device by an instruction operation on the operation screen, the information transmitted over the network is the moving image itself. Since the amount of communication data increases, the load on the network is large, and there is a problem that it is difficult to smoothly obtain a moving image that matches the user's request. In addition, the moving image being input on the transmission side apparatus may not appear on the operation screen, and the moving image may not be obtained.

  In a system that transmits a moving image file list that exists in a remote transmitting device, the amount of communication data can be reduced, but the receiving device displays a file list with only the file name. It is difficult to understand the contents included in the file, and it takes a lot of time and effort for the user to select and obtain a moving image that matches his / her request. In addition, when thumbnail images are transmitted, the thumbnail images are transmitted over the network every time, so the amount of communication data increases and the same problem as described above occurs.

  According to the present invention, a moving image existing in a remote place can be smoothly obtained without increasing the load on the network, and the moving image being input at the remote place is confirmed to meet a user's request. An object of the present invention is to provide a video transmission apparatus capable of obtaining a moving image.

In order to solve the above-described problem, the present invention includes a transmission-side device and a reception-side device, and the transmission-side device creates a thumbnail image based on the acquired moving image and assigns a unique ID to each moving image. A thumbnail image creating unit, a thumbnail image accumulating unit for accumulating a thumbnail image associated with a moving image and a unique ID as a set, a thumbnail image list creating / managing unit for managing a thumbnail image list including a unique ID, and a transmitting / receiving unit The receiving-side device includes a transmission / reception unit, a thumbnail image storage unit that stores a combination of the received thumbnail image and unique ID, and a thumbnail image list management unit that manages a thumbnail image list including the unique ID, and Thumbnail image of the transmitting device when communication is started between the receiving device and the receiving device. The list is transmitted to the receiving side device, and the receiving side device sets a combination of the thumbnail image and the unique ID that are determined not to be stored based on the received thumbnail image list and the thumbnail image list of the receiving side device. When a transmission request is made to the transmission side device and a preview request for the current input moving image is transmitted from the reception side device, the transmission side device acquires and acquires the current input moving image only for a short time. A set of a thumbnail image and a unique ID is created based on the moving image, and is transmitted to the receiving device. The unique ID is a file name, update time, moving image duration, and the moving image is transmitted from the transmitting device. Status display information indicating whether encoding is in progress, encoding has been completed, or image preview is requested from the transmission side device and previewing is in progress In response to the creation and update of the moving image file and the change of the state, the transmission side device assigns a unique ID to represent the state of the file after the creation and update of the moving image and the change of the state. It is characterized by updating .

  In addition, the present invention also stores a set of a thumbnail image and a unique ID created by the transmitting device based on a newly acquired moving image during communication between the transmitting device and the receiving device. And a unique ID is transmitted to the receiving side device to notify that a new moving image has been acquired.

  Further, the present invention is characterized in that the transmission side apparatus automatically transmits a moving image to the reception side apparatus in response to a state change from encoding during input video signal to completion of encoding.

  Further, the present invention is characterized in that the transmitting side apparatus transmits a moving image whose state has been changed from encoding to completion of encoding to the receiving side apparatus according to a request from the receiving side apparatus. And

Furthermore, the present invention provides a thumbnail image list of the receiving device, and wherein Rukoto are automatically updated according to the update of the unique ID in the transmitting-side apparatus.

  According to the present invention, it is possible to smoothly obtain a moving image existing in a remote place without increasing the load on the network. In addition to moving images that have already been input at remote locations, it is possible to check and collect moving images that are being input, so even if the remote transmission side is completely unmanned, it meets the user's requirements. It is possible to acquire a moving image.

  The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. The transmission side device 1 and the reception side device 2 installed in a remote place are connected via a network 3.

  The transmission-side apparatus 1 includes a control unit (CPU) 4 that controls the entire transmission-side apparatus, a video encoder 5 that encodes an input video signal from a video camera, and a moving image output from the video encoder 5. A content accumulation unit 6 that accumulates content, a thumbnail image creation unit 7 that creates a thumbnail image based on the acquired moving image and assigns a unique ID and a time stamp to each moving image, and a thumbnail image associated with the moving image and a unique A thumbnail image storage unit 8 that stores IDs as a set, a thumbnail image list creation / management unit 9 that manages a thumbnail image list including unique IDs, and a transmission / reception unit 10 are provided. The thumbnail image creation unit 7 and the thumbnail image list creation / management unit 9 can be configured as a part of the control unit 4.

  The receiving-side device 2 includes a control unit (CPU) 11 that controls the entire receiving-side device, a content storage unit 12 that stores content received from the transmitting-side device 1, and a thumbnail that stores a set of received thumbnail images and unique IDs. The image storage unit 13, the thumbnail image list management unit 14, a transmission / reception unit 15 that performs transmission / reception with the transmission side device 1, and an input unit 16 for inputting various commands for remotely controlling the transmission side device 1. The thumbnail image list management unit 14 can be configured as a part of the control unit 11.

  The receiving-side device 2 further includes a video decoder that decodes (decodes) the received moving image, a monitor that displays a video signal obtained by the decoding, and the like, which are not shown.

  FIG. 2 is a diagram illustrating an example of a unique ID associated with a moving image. The unique ID shown in FIG. 2A includes a file name, an update time, a moving image duration, and state display information. This unique ID is created together with a thumbnail image attached to the moving image when the content of the moving image is newly created or updated.

  In addition, during the connection between the transmission side device 1 and the reception side device 2, the unique ID shown in FIG. 2B is created with the start of encoding of the input video signal in the transmission side device. This unique ID includes a file name, an encoding start time, an elapsed time from the start of encoding, and status display information indicating that encoding is in progress. Note that the encoding start time and the elapsed time from the start of encoding can be stored in the same area as corresponding to the update time and moving image duration in FIG.

  At the end of encoding of the input video signal, a unique ID shown in FIG. 2C is created. The unique ID includes the file name, the encoding end time, the moving image duration, and the status display information indicating that the encoding is complete, and the unique ID in FIG. 2A is updated with the end of encoding.

  When a preview request command is sent from the receiving apparatus 2 and an image preview is requested, a unique ID shown in FIG. 2D is created. This unique ID includes a preview-specific file name, preview image capture time, moving image duration “0”, and status display information indicating that preview is in progress.

  Next, the operation of the remote video transmission apparatus having the above configuration will be described. The video encoder 5 receives a video signal from a video source (not shown) such as a video camera, and encodes an input video signal for a predetermined period, for example, every predetermined time under a predetermined condition. The moving image output from the video encoder 5 is stored as content in the content storage unit 6.

  The thumbnail image creating unit 7 creates a thumbnail image based on the acquired moving image and assigns a unique ID and a time stamp to each moving image. The thumbnail images to which the unique ID and time stamp are assigned are stored in the thumbnail image storage unit 8 as a pair. The thumbnail image list creation / management unit 9 creates and manages a thumbnail image list including a unique ID of the thumbnail images stored in the thumbnail image storage unit 8.

  A set of thumbnail images and unique IDs stored in the thumbnail image storage unit 8 is transmitted to the receiving-side device 2. The operation is as follows: (1) When the receiving side device 2 is connected to the transmitting side device 1 (immediately after the connection), (2) During the connection between the transmitting side device 1 and the receiving side device 2, (3) A case where a preview request command is sent from the receiving apparatus 1 while the transmitting apparatus 1 and the receiving apparatus 2 are connected will be described as an example.

  (1) Operation when receiving side device 2 is connected to transmitting side device 1 (immediately after connection)

  It is assumed that some contents are accumulated in the content accumulation unit 6 of the transmission side apparatus 1 and a set of thumbnail images and unique IDs associated therewith is accumulated in the thumbnail image accumulation unit 8.

  In this state, when the receiving apparatus 2 is connected to the transmitting apparatus 1, the transmitting apparatus 1 transmits a thumbnail image list including the unique IDs of the already accumulated thumbnail images to the receiving apparatus 2. In the receiving-side device 2, the thumbnail image list management unit 14 compares the unique ID in the thumbnail image list managed by itself with the unique ID in the received thumbnail image list. As a result of this comparison, if it is determined that a thumbnail image that is not in the thumbnail image storage unit 13 or an updated thumbnail image exists in the thumbnail image storage unit 8 of the transmission side device 1, a transmission request command for the thumbnail image is sent to the transmission side. Transmit to device 1. In accordance with this transmission request command, the transmission side apparatus 1 transmits the set of the thumbnail image and the unique ID created and stored in advance to the reception side apparatus 2.

In the present invention, the moving image existing in the transmission side device 1 is intended to be collected to the receiving side device 2, and the moving image and the thumbnail image accumulated in the content accumulation unit 12 and the thumbnail image accumulation unit 13 are Since it is advantageous from the viewpoint of management that the number is as small as possible, a moving image that is present in the receiving side device 1 but not in the transmitting side device 1 and a thumbnail image as metadata thereof are obtained from the content accumulation unit 12 and the thumbnail image accumulation unit 13. It is preferable to delete. Deleted moving images and thumbnail images can be transferred to other storage units for management as needed.
(2) Operation when encoding is started in the transmission side apparatus 1 while the transmission side apparatus 1 and the reception side apparatus 2 are connected

  While the transmission side device 1 and the reception side device 2 are connected, the transmission side device 1 sends a moving image acquisition request command from the transmission side device 1 or the reception side device 2 and the video encoder 5 encodes the input video signal. When started, the thumbnail image creating unit 7 creates a thumbnail image based on the newly acquired moving image, and gives a unique ID and a time stamp thereto, triggered by this encoding. The unique ID assigned here is transmitted to the receiving-side device 2, and the transmission-side device 1 is notified of the acquisition of a new moving image.

  In addition to this notification, a set of a newly created thumbnail image and unique ID can be transmitted to the receiving apparatus 1. This is because, for example, the receiving side device 2 checks whether or not the received unique ID exists in the thumbnail image list in the thumbnail image storage unit 13 and determines that it does not exist, a transmission request command is sent to the transmitting side device 1. This can be realized by sending to

Similarly to the above (1), the transmission side apparatus 1 transmits a thumbnail image list including a new unique ID, and the reception side apparatus 2 transmits a transmission request for a set of thumbnail images and unique IDs not in the thumbnail image storage unit 13. This can also be realized by transmitting a command to the transmission side apparatus 1.
(3) Operation when a preview request command is output from the receiving apparatus 1 while the transmitting apparatus 1 and the receiving apparatus 2 are connected

  When the receiving side apparatus 2 wants to know what video signal is currently input at the transmitting side terminal 1, a preview request command is transmitted from the receiving side apparatus 2 to the transmitting side apparatus 1. When receiving the preview request command, the video encoder 5 of the transmission side apparatus 1 encodes the current input video signal for a short time and acquires a moving image. Thereafter, with the encoding by the video encoder 5 as an opportunity, a thumbnail image is created from the acquired moving image, a unique ID or a time stamp is given, and an operation of transmitting the set of the thumbnail image and the unique ID to the receiving side device 1 is as follows. Since this is the same as (2) above, description thereof is omitted.

  As described above, thumbnail images having the same contents as the thumbnail images stored in the thumbnail image storage unit 8 of the transmission side device 1 are stored in the thumbnail image storage unit 13 of the reception side device 2. Thumbnail images can be displayed, and a moving image matching the user's request can be selected and ordered based on the displayed thumbnail images.

  As mentioned above, although embodiment of this invention was described, this invention can be variously modified. For example, a button for turning on the automatic content transmission function is provided on the receiving side device 2, and when this button is pressed, transmission of the content whose unique ID status display information is changed to completion of encoding automatically starts. You can make it. In this way, it is possible to realize an automatic content transmission function for automatically transmitting / receiving content existing in the transmission-side apparatus 1 when a preset condition is satisfied.

  Further, the thumbnail image list creation / management unit of the transmission side apparatus 1 based on detection of new creation or update of a unique ID in the transmission side apparatus 1 or based on polling from the reception side apparatus 2 to the transmission side apparatus 1 9 is transmitted to the receiving side device 2 to automatically update the file list display of the receiving side device 2, and the content duration time and the elapsed time from the start of encoding are updated as needed. It is also possible to provide an automatic file list display update function.

  The present invention is effective when applied to, for example, a system for acquiring broadcast station material from a remote location or a system for acquiring weather information in a remote location in combination with a video camera.

It is a block diagram which shows one Embodiment of this invention. It is a figure which shows the example of the unique ID accompanying a moving image.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Transmission side apparatus, 2 ... Reception side apparatus, 3 ... Network, 4,11 ... Control part (CPU), 5 ... Bidder encoder, 6, 12 ... Content storage , 7 ... Thumbnail image creation unit, 8, 13 ... Thumbnail image storage unit, 9 ... Thumbnail image list creation / management unit, 10, 15 ... Transmission / reception unit, 14 ... Thumbnail image list Management Department

Claims (5)

  1. It consists of a sending device and a receiving device,
    The transmitting apparatus creates a thumbnail image based on the acquired moving image and assigns a unique ID to each moving image, and a thumbnail image that accumulates a thumbnail image and a unique ID associated with the moving image as a set. A storage unit, a thumbnail image list creation / management unit that manages a thumbnail image list including a unique ID, and a transmission / reception unit;
    The receiving side device includes a transmission / reception unit, a thumbnail image storage unit that stores a set of received thumbnail images and a unique ID, and a thumbnail image list management unit that manages a thumbnail image list including a unique ID,
    When communication is started between the transmitting device and the receiving device, the thumbnail image list of the transmitting device is transmitted to the receiving device, and the receiving device receives the received thumbnail image list and the received A request for transmitting a set of a thumbnail image and a unique ID determined to be not stored based on a thumbnail image list of the side device to the transmitting side device, and a preview request for the current input moving image is sent to the receiving side device The transmitting side device acquires the current input moving image only for a short time, creates a set of thumbnail images and unique IDs based on the acquired moving image, transmits to the receiving side device ,
    The unique ID includes a file name, an update time, a moving image duration, and whether the moving image is being encoded or has been encoded in the transmission side device, or an image preview is requested from the transmission side device and is being previewed. Status display information indicating the status of the video image, and the transmission side device creates or updates a moving image file, changes the status of the moving image file after the status change is made. A remote video transmission apparatus , wherein the unique ID is updated so as to indicate the state of the file .
  2. The transmitting device stores a set of a thumbnail image and a unique ID created based on a moving image newly acquired during communication between the transmitting device and the receiving device in its thumbnail image storage unit. The remote video transmission apparatus according to claim 1, wherein a new moving image is acquired by transmitting a unique ID to the reception-side apparatus.
  3. 3. The remote video transmission according to claim 1, wherein the transmission-side apparatus automatically transmits a moving image to the reception-side apparatus in response to a state change from encoding to completion of input video signal encoding. 4. apparatus.
  4. The transmitting side apparatus, a moving image had status changes to encode completion from during encoding of the input video signal, according to claim 1, wherein the transmitting to the receiving side apparatus according to a request from the receiving device or remote video transmission apparatus according to 2.
  5. Thumbnail image list of the receiving device, a remote video transmission device according to any one of claims 1 to 4, characterized in that it is automatically updated in response to updating of the unique ID in the transmitting-side apparatus.
JP2003337338A 2003-09-29 2003-09-29 Remote video transmission device Expired - Fee Related JP4390183B2 (en)

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JP4730590B2 (en) 2005-05-23 2011-07-20 ソニー株式会社 Control device and method, information processing device and method, and program
JP4646791B2 (en) * 2005-12-08 2011-03-09 株式会社日立製作所 Digital content receiving apparatus and display method
CN101917353A (en) * 2010-08-18 2010-12-15 中兴通讯股份有限公司 Method for transmitting expression file and terminal equipment
JP5920848B2 (en) * 2014-02-14 2016-05-18 Necパーソナルコンピュータ株式会社 Information processing apparatus, information processing method, and program

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