Video distribution method and video distribution system
First Claim
1. A video distribution system connected to a communication network for distributing an image in response to a request, comprising:
- at least one image pickup unit for picking up an image of a predetermined monitor area and converting said image into a video signal;
at least one encoder connected to receive the video signal from said image pickup unit, each encoder encoding the video signal from an associated image pickup unit and sending said encoded video signal to said network;
an image accumulation and distribution unit connected to said network for accumulating the encoded video signal from a designated encoder, said image accumulation and distribution unit attaching unique information to each image frame;
a data converter for image browsing, connected to said network, for reading the accumulated image from said image accumulation and distribution unit and converting said image into a reduced image in response to a request;
at least one information terminal with or without a browsing program installed therein, connected by wire or radio to said network for acquiring and displaying an image by accessing said image accumulation and distribution unit or said data converter for imaging browsing; and
a notification unit connected to said network for reading the accumulated image from said image accumulation and distribution unit, detecting an image change indicating an abnormality in said predetermined area, accumulating the unique information on the image change and displaying alarm information containing the change occurrence time on an associated information terminal,wherein said information terminal accesses said image accumulation and distribution unit or said data converter for image browsing in response to an operation of said associated information terminal by a user and acquires the image in a predetermined time range related to said change occurrence time from said image accumulation and distribution unit or said data converter, andwherein, for an information terminal having the browser program interlocked with an email function, said notification unit sends unique information on an image change to the information terminal via email, and in response, said data converter for image browsing sends a reduced image corresponding to said unique information received from said information terminal to said information terminal and, for an information terminal having no browser program interlocked with the email function, said notification unit, in response to connection from said information terminal, sends unique information accumulated in the notification unit to said information terminal so as to connect the data converter to said information terminal in response to selection of the unique information by the information terminal, wherein said data converter distributes an image in a form displayable on said information terminal to said information terminal.
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Accused Products
Abstract
A video distribution method and a video distribution system connected to a transmission path such as the Internet. The system has a video signal input unit, an encoder for converting the video signal into a digitally compressed image data, an image accumulation and distribution unit for accumulating and distributing the digitally compressed image data, a notification unit for reading the accumulated images and detecting an image change, an image browsing data converter for reducing the accumulated image, and an information terminal for accessing the images of the image accumulation and distribution unit and the image browsing data converter. The notification unit, upon detection of an image change, records the image change occurrence time. The information terminal acquires the image from the image accumulation and distribution unit or the video browsing data converter based on the change occurrence time information stored in the notification unit.
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Citations
17 Claims
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1. A video distribution system connected to a communication network for distributing an image in response to a request, comprising:
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at least one image pickup unit for picking up an image of a predetermined monitor area and converting said image into a video signal; at least one encoder connected to receive the video signal from said image pickup unit, each encoder encoding the video signal from an associated image pickup unit and sending said encoded video signal to said network; an image accumulation and distribution unit connected to said network for accumulating the encoded video signal from a designated encoder, said image accumulation and distribution unit attaching unique information to each image frame; a data converter for image browsing, connected to said network, for reading the accumulated image from said image accumulation and distribution unit and converting said image into a reduced image in response to a request; at least one information terminal with or without a browsing program installed therein, connected by wire or radio to said network for acquiring and displaying an image by accessing said image accumulation and distribution unit or said data converter for imaging browsing; and a notification unit connected to said network for reading the accumulated image from said image accumulation and distribution unit, detecting an image change indicating an abnormality in said predetermined area, accumulating the unique information on the image change and displaying alarm information containing the change occurrence time on an associated information terminal, wherein said information terminal accesses said image accumulation and distribution unit or said data converter for image browsing in response to an operation of said associated information terminal by a user and acquires the image in a predetermined time range related to said change occurrence time from said image accumulation and distribution unit or said data converter, and wherein, for an information terminal having the browser program interlocked with an email function, said notification unit sends unique information on an image change to the information terminal via email, and in response, said data converter for image browsing sends a reduced image corresponding to said unique information received from said information terminal to said information terminal and, for an information terminal having no browser program interlocked with the email function, said notification unit, in response to connection from said information terminal, sends unique information accumulated in the notification unit to said information terminal so as to connect the data converter to said information terminal in response to selection of the unique information by the information terminal, wherein said data converter distributes an image in a form displayable on said information terminal to said information terminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A video distribution system connected to a communication network for distributing an image in response to a request, comprising:
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at least one image pickup unit for picking up an image of a predetermined area and converting said image into a video signal; at least one encoder connected to receive the video signal from said image pickup unit, each encoder encoding the video signal from associated image pickup unit and sending said encoded video signal to said network; an image accumulation and distribution unit connected to said network for accumulating the encoded video signal from a designated encoder, said image accumulation and distribution unit attaching unique information to each image frame; a data converter for image browsing, connected to said network, for reading the accumulated image from said image accumulation and distribution unit and converting said image into a reduced image in response to a request; at least one information terminal with or without a browsing program installed therein, connected by wire or radio to said network, for acquiring and displaying an image by accessing said image accumulation and distribution unit or said data converter for image browsing; a sensor arranged in said predetermined area for detecting an abnormality in said predetermined area; and a notification unit connected to said network for reading the accumulated image from said image accumulation and distribution unit, receiving the output of said sensor indicating an abnormality in said monitor area, accumulating the unique information on the image change and displaying the alarm information containing the change occurrence time on associated information terminal; wherein said information terminal accesses said image accumulation and distribution unit or said data converter for image browsing in response to user operation of said associated information terminal and acquires the image in a predetermined time range related to said change occurrence time from said image accumulation and distribution unit or said data converter, and wherein, for an information terminal having the browser program interlocked with an email function, said notification unit sends unique information on an image change to the information terminal via email, and in response, said data converter for image browsing sends a reduced image corresponding to said unique information received from said information terminal to said information terminal and, for an information terminal having no browser program interlocked with the email function, said notification unit, in response to connection from said information terminal, sends unique information accumulated in the notification unit to said information terminal so as to connect said data converter to said information terminal in response to selection of the unique information by the information terminal, wherein said data converter distributes an image in a form displayable on said information terminal to said information terminal. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A video distribution method for a video distribution system connected to a communication network for distributing an image in response to a request, comprising the steps of:
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accumulating a video signal in at least one monitor area in an image accumulation and distribution unit through said network, wherein said video signal has attached thereto information unique to each image frame; reading an image for each channel from said image accumulation and distribution unit through said network; detecting an image change indicating an abnormality in associated monitor area from said image read out, producing alarm information containing the change occurrence time and a still image of said change occurrence time, and transmitting said alarm information to associated information terminal through said network; displaying said alarm information on said associated information terminal; acquiring the image in a predetermined time range related to said change occurrence time from said image accumulation and distribution unit or a data converter for image browsing in response to the selection of the image reproduction by a user of said associated information terminal; and displaying said image in said predetermined time range in a display unit of said associated information terminal, wherein, for an information terminal having a browser program interlocked with an email function, said notification unit sends unique information on an image change to the information terminal via email, and in response, said data converter for image browsing sends a reduced image corresponding to said unique information received from said information terminal to said information terminal and, for an information terminal having no browser program interlocked with the email function, said notification unit, in response to connection from said information terminal, sends unique information accumulated in the notification unit to said information terminal so as to connect said data converter to said information terminal in response to selection of the unique information by the information terminal, wherein said data converter distributes an image in a form displayable on said information terminal to said information terminal.
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Specification