Image distribution system and method of controlling the same
First Claim
1. An image distribution system comprising:
- an image sensing apparatus controllable by an external device;
an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus;
an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus; and
a network connecting said image transmission apparatus and said image reception apparatus, wherein, in a case where said image transmission apparatus issues the authorization to said image reception apparatus to control said image sensing apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after restoring the communication within a predetermined period, conditions of said image sensing apparatus are restored to conditions at the time of the undesired termination, and said image reception apparatus is allowed to continuously control said image sensing apparatus under the restored conditions.
2 Assignments
0 Petitions
Accused Products
Abstract
In an image distribution system comprising a camera controllable by an external device, a camera server having a function of digitizing and transmitting an image signal acquired by the camera via a network and a function of issuing authorization to control the camera, a viewer which receives and displays the transmitted digitized image signal, further requests to control the camera, and a network connecting the camera server and the viewer, in a case where the camera server issues the authorization to control the camera to the viewer and communication between the viewer and the camera server is undesirably terminated while the viewer holds the authorization, when the viewer restores the communication within a predetermined period, it is allowed to continuously control the camera under the same conditions as at the time of the undesired termination.
41 Citations
64 Claims
-
1. An image distribution system comprising:
-
an image sensing apparatus controllable by an external device;
an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus;
an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus; and
a network connecting said image transmission apparatus and said image reception apparatus, wherein, in a case where said image transmission apparatus issues the authorization to said image reception apparatus to control said image sensing apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after restoring the communication within a predetermined period, conditions of said image sensing apparatus are restored to conditions at the time of the undesired termination, and said image reception apparatus is allowed to continuously control said image sensing apparatus under the restored conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. An image distribution system comprising:
-
an image sensing apparatus controllable by an external device;
an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus;
an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus; and
a network connecting said image transmission apparatus and said image reception apparatus, wherein, in a case where said image transmission apparatus issues the authorization to said image reception apparatus to control said image sensing apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after restoring the communication within a predetermined period, conditions of said image sensing apparatus are restored to conditions at the time of the undesired termination, and said image reception apparatus is allowed to continuously control said image sensing apparatus under the restored conditions, wherein, in a case where said image reception apparatus restores the communication within the predetermined period after the undesired termination and another image reception apparatus holds authorization to control said image sensing apparatus at the time of the restoration of the communication, said image transmission apparatus suspends the authorization issued to the other image reception apparatus and issues authorization to control said image sensing apparatus to said restored image reception apparatus. - View Dependent Claims (11, 12, 13, 14)
-
-
15. An image distribution system comprising:
-
an image sensing apparatus controllable by an external device;
an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus;
an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus; and
a network connecting said image transmission apparatus and said image reception apparatus, wherein, in a case where said image transmission apparatus issues the authorization to said image reception apparatus to control said image sensing apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after restoring the communication within a predetermined period, conditions of said image sensing apparatus are restored to conditions at the time of the undesired termination, and said image reception apparatus is allowed to continuously control said image sensing apparatus under the restored conditions, wherein said image transmission apparatus issues the authorization to control said image sensing apparatus after restoring the conditions of said image sensing apparatus.
-
-
16. An image distribution system comprising:
-
an image sensing apparatus controllable by an external device;
an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus;
an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus; and
a network connecting said image transmission apparatus and said image reception apparatus, wherein, in a case where said image transmission apparatus issues the authorization to said image reception apparatus to control said image sensing apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after restoring the communication within a predetermined period, conditions of said image sensing apparatus are restored to conditions at the time of the undesired termination, and said image reception apparatus is allowed to continuously control said image sensing apparatus under the restored conditions, wherein said image transmission apparatus comprises authorization period administration means for setting a period allowed for said image reception apparatus to hold the authorization at the time of restoration of communication after the undesired termination. - View Dependent Claims (17, 18)
-
-
19. A control method for controlling an image distribution system having an image sensing apparatus controllable by an external device, an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus, an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus, and a network connecting said image transmission apparatus and said image reception apparatus,
wherein, in a case where the authorization to control said image sensing apparatus is issued to said image reception apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after said image reception apparatus restores communication within a predetermined period, restoring conditions of said image sensing apparatus to the conditions at the time of the undesired termination; - and
allowing said image reception apparatus to continuously control said image sensing apparatus under the restored conditions. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
a step of informing said restored image reception apparatus of time to take until said image transmission apparatus issues the authorization to control said image sensing apparatus to said restored image reception apparatus; and
a step of indicating the notified time in said restored image reception apparatus.
- and
-
24. The control method according to claim 19 comprising:
-
a reception step of receiving a request for authorization to control said image sensing apparatus after the undesired termination; and
a determination step of determining whether or not an image reception apparatus which requested the authorization is said image reception apparatus whose communication was undesirably terminated while holding an authorization.
-
-
25. The control method according to claim 24, wherein, in said determination step, the determination is performed on the basis of an IP (internet protocol) address and a user name of the image reception apparatus which requested the authorization.
-
26. The control method according to claim 24, wherein, in said determination step, the determination is performed on the basis of a key issued at said image transmission apparatus and a password.
-
27. A control method for controlling an image distribution system having an image sensing apparatus controllable by an external device, an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus, an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus, and a network connecting said image transmission apparatus and said image reception apparatus,
wherein, in a case where the authorization to control said image sensing apparatus is issued to said image reception apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after said image reception apparatus restores communication within a predetermined period, restoring conditions of said image sensing apparatus to the conditions at the time of the undesired termination; - and
allowing said image reception apparatus to continuously control said image sensing apparatus under the restored conditions, wherein said control method further comprising;
a step of suspending the authorization issued to another image reception apparatus in a case where said image reception apparatus restores the communication within the predetermined period after the undesired termination and the other image reception apparatus holds authorization to control said image sensing apparatus at the time of the restoration of the communication; and
a step of issuing authorization to control said image sensing apparatus to said restored image reception apparatus after suspending the authorization issued to the other image reception apparatus. - View Dependent Claims (28, 29, 30, 31)
a condition restoration step of restoring conditions of said image sensing apparatus to the conditions at the time of the undesired termination in a case where said image reception apparatus restores the communication within the predetermined period after the undesired termination; and
a step of issuing the authorization to control said image sensing apparatus after said condition restoration step.
- and
-
29. The control method according to claim 27, comprising a step of determining whether or not said restored image reception apparatus has higher priority than the other image reception apparatus,
wherein in said suspending step, the authorization issued to the other image reception apparatus is suspended when said restored image reception apparatus has higher priority than the other image reception apparatus. -
30. The control method according to claim 29, wherein said priority is determined on the basis of time when the image reception apparatuses start controlling said image sensing apparatus.
-
31. The control method according to claim 29, wherein, when an image reception apparatus is charged for the authorization to control said image sensing apparatus, said priority is determined on the basis of ranks given to the image reception apparatuses in a charging system.
-
32. A control method for controlling an image distribution system having an image sensing apparatus controllable by an external device, an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus, an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus, and a network connecting said image transmission apparatus and said image reception apparatus,
wherein, in a case where the authorization to control said image sensing apparatus is issued to said image reception apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after said image reception apparatus restores communication within a predetermined period, restoring conditions of said image sensing apparatus to the conditions at the time of the undesired termination; - and
allowing said image reception apparatus to continuously control said image sensing apparatus under the restored conditions, wherein said control method further comprising;
issuing the authorization to control said image sensing apparatus after restoring the conditions.
- and
-
33. A control method for controlling an image distribution system having an image sensing apparatus controllable by an external device, an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus, an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus, and a network connecting said image transmission apparatus and said image reception apparatus,
wherein, in a case where the authorization to control said image sensing apparatus is issued to said image reception apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after said image reception apparatus restores communication within a predetermined period, restoring conditions of said image sensing apparatus to the conditions at the time of the undesired termination; - and
allowing said image reception apparatus to continuously control said image sensing apparatus under the restored conditions, wherein said control method further comprising an authorization period administration step of setting a period allowed for said image reception apparatus to hold the authorization at the time of restoration of communication after the undesired termination. - View Dependent Claims (34, 35)
- and
-
36. A computer program product comprising a computer usable medium having computer readable program code means embodied in said medium of a control method for controlling an image distribution system having an image sensing apparatus controllable by an external device, an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus, an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus, and a network connecting said image transmission apparatus and said image reception apparatus,
said product including: -
computer readable program code means for, in a case where the authorization to control said image sensing apparatus is issued to said image reception apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after restoring the communication within a predetermined period, restoring conditions of said image sensing apparatus to the conditions at the time of the undesired termination; and
computer readable program code means for enabling said image reception apparatus to continuously control said image sensing apparatus under the restored conditions. - View Dependent Claims (37, 38, 39, 40, 41)
computer readable program code means for informing said restored image reception apparatus of time to take until said image transmission apparatus issues the authorization to control said image sensing apparatus to said restored image reception apparatus; and
computer readable program code means for indicating the notified time in said restored image reception apparatus.
-
-
41. The computer program product according to claim 36 comprising:
-
computer readable program code means for receiving a request for authorization to control said image sensing apparatus after the undesired termination; and
computer readable program code means for determining whether or not an image reception apparatus which requested the authorization is said image reception apparatus whose communication was undesirably terminated while holding an authorization.
-
-
42. A computer program product comprising a computer usable medium having computer readable program code means embodied in said medium of a control method for controlling an image distribution system having an image sensing apparatus controllable by an external device, an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus, an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus, and a network connecting said image transmission apparatus and said image reception apparatus,
said product including: -
computer readable program code means for, in a case where the authorization to control said image sensing apparatus is issued to said image reception apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after restoring the communication within a predetermined period, restoring conditions of said image sensing apparatus to the conditions at the time of the undesired termination; and
computer readable program code means for enabling, said image reception apparatus to continuously control said image sensing apparatus under the restored conditions, wherein said product further comprising;
computer readable program code means for suspending the authorization issued to another image reception apparatus in a case where said image reception apparatus restores the communication within the predetermined period after the undesired termination and the other image reception apparatus holds authorization to control said image sensing apparatus at the time of the restoration of the communication; and
computer readable program code means for issuing authorization to control said image sensing apparatus to said restored image reception apparatus after suspending the authorization issued to the other image reception apparatus. - View Dependent Claims (43, 44)
computer readable program code means for restoring conditions of said image sensing apparatus to the conditions at the time of the undesired termination in a case where said image reception apparatus restores the communication within the predetermined period after the undesired termination; and
computer readable program code means for issuing the authorization to control said image sensing apparatus after restoring the conditions.
-
-
44. The computer program product according to claim 42, comprising computer readable program code means for determining whether or not said restored image reception apparatus has higher priority than the other image reception apparatus,
wherein the authorization issued to the other image reception apparatus is suspended when said restored image reception apparatus has higher priority than the other image reception apparatus.
-
45. A computer program product comprising a computer usable medium having computer readable program code means embodied in said medium of a control method for controlling an image distribution system having an image sensing apparatus controllable by an external device, an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus, an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus, and a network connecting said image transmission apparatus and said image reception apparatus,
said product including: -
computer readable program code means for, in a case where the authorization to control said image sensing apparatus is issued to said image reception apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after restoring the communication within a predetermined period, restoring conditions of said image sensing apparatus to the conditions at the time of the undesired termination; and
computer readable program code means for enabling said image reception apparatus to continuously control said image sensing apparatus under the restored conditions, wherein said product further comprising;
computer readable program code means for issuing the authorization to control said image sensing apparatus after restoring the conditions.
-
-
46. A computer program product comprising a computer usable medium having computer readable program code means embodied in said medium of a control method for controlling an image distribution system having an image sensing apparatus controllable by an external device, an image transmission apparatus having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus, an image reception apparatus which receives and displays the transmitted digitized image signal, further requests to control said image sensing apparatus, and a network connecting said image transmission apparatus and said image reception apparatus,
said product including: -
computer readable program code means for, in a case where the authorization to control said image sensing apparatus is issued to said image reception apparatus and communication between said image reception apparatus and said image transmission apparatus is undesirably terminated while said image reception apparatus holds the authorization, after restoring the communication within a predetermined period, restoring conditions of said image sensing apparatus to the conditions at the time of the undesired termination; and
computer readable program code means for enabling said image reception apparatus to continuously control said image sensing apparatus under the restored conditions, wherein said product further comprising computer readable program code means for setting a period allowed for said image reception apparatus to hold the authorization at the time of restoration of communication after the undesired termination.
-
-
47. An image transmission apparatus, used in connection with an image sensing apparatus controllable by an external device, having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus,
wherein, in a case where the image transmission apparatus issues the authorization to control said image sensing apparatus to an external apparatus and communication between the external apparatus and the image transmission apparatus is undesirably terminated while the external apparatus holds the authorization, after restoring the communication within a predetermined period, the image transmission apparatus restores conditions of said image sensing apparatus to the conditions at the time of the undesired termination, and allows said external apparatus to continuously control said image sensing apparatus under the restored conditions.
-
56. An image transmission apparatus, used in connection with an image sensing apparatus controllable by an external device, having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus,
wherein, in a case where the image transmission apparatus issues the authorization to control said image sensing apparatus to an external apparatus and communication between the external apparatus and the image transmission apparatus is undesirably terminated while the external apparatus holds the authorization, after restoring the communication within a predetermined period, the image transmission apparatus restores conditions of said image sensing apparatus to the conditions at the time of the undesired termination, and allows said external apparatus to continuously control said image sensing apparatus under the restored conditions, wherein, in a case where said external apparatus restores the communication within the predetermined period after the undesired termination and another external apparatus holds authorization to control said image sensing apparatus at the time of the restoration of the communication, the image transmission apparatus suspends the authorization issued to the other external apparatus and issues authorization to control said image sensing apparatus to said restored external apparatus.
-
61. An image transmission apparatus, used in connection with an image sensing apparatus controllable by an external device, having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus,
wherein, in a case where the image transmission apparatus issues the authorization to control said image sensing apparatus to an external apparatus and communication between the external apparatus and the image transmission apparatus is undesirably terminated while the external apparatus holds the authorization, after restoring the communication within a predetermined period, the image transmission apparatus restores conditions of said image sensing apparatus to the conditions at the time of the undesired termination, and allows said external apparatus to continuously control said image sensing apparatus under the restored conditions, wherein the image transmission apparatus issues the authorization to control said image sensing apparatus after restoring the conditions of said image sensing apparatus.
-
62. An image transmission apparatus, used in connection with an image sensing apparatus controllable by an external device, having a function of digitizing and transmitting an image signal acquired by said image sensing apparatus via a network and a function of issuing authorization to control said image sensing apparatus,
wherein, in a case where the image transmission apparatus issues the authorization to control said image sensing apparatus to an external apparatus and communication between the external apparatus and the image transmission apparatus is undesirably terminated while the external apparatus holds the authorization, after restoring the communication within a predetermined period, the image transmission apparatus restores conditions of said image sensing apparatus to the conditions at the time of the undesired termination, and allows said external apparatus to continuously control said image sensing apparatus under the restored conditions, wherein said image transmission apparatus further comprising authorization period administration means for setting a period allowed for said external apparatus to hold the authorization at the time of restoration of communication after the undesired termination.
Specification