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Method and equipment for detecting information comprising information related to a selection device

A technology of equipment and external devices, applied in the direction of program control device, program control design, hybrid switch system, etc., can solve the problems of cumbersome, large number of communications, etc.

Inactive Publication Date: 2009-09-16
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, as the number of information required or the number of devices being queried increases, the amount of communication becomes large and requires a cumbersome process

Method used

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  • Method and equipment for detecting information comprising information related to a selection device
  • Method and equipment for detecting information comprising information related to a selection device
  • Method and equipment for detecting information comprising information related to a selection device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0052] figure 1 is a block diagram showing the configuration of the information communication system constituting the first embodiment of the present invention. The information communication system of the present invention is a serial bus communication system composed of a digital interface based on the IEEE 1394 standard. In the communication system of this system, all the devices used in it are from the same manufacturer.

[0053] figure 1 In the drawing, digital video cameras (DVC) 101, 102 are shown, each including an image extraction unit for obtaining an optical image of an object, and a digital interface 108 for outputting image information obtained by the image extraction unit.

[0054] figure 1In, a personal computer (PC) 103 is also shown, which includes a display device 106 capable of displaying image information from DVC 101, 102 and information (such as icons) indicating DVC 101, 102, and includes a display device 106 for The displayed image on the screen is i...

no. 2 example

[0090] The following will refer to figure 1 A communication system of the second embodiment will be described. In the following second embodiment, those components similar or identical to those of the first embodiment will be denoted by the same reference numerals as those in the first embodiment, and will not be described again.

[0091] Figure 7 is a diagram showing a part of the configuration ROM provided in the digital interface 108 of the second embodiment. As in the first embodiment, each node can read the unique ID specific to each node from addresses FFFF F000040C and FFFF F0000410 of the configuration ROM.

[0092] see Figure 7 , as in the first embodiment, the addresses FFFFF000040C and FFFFF0000410 store the vendor IC 701 of 3 bytes and the chip IDs 702 and 703 of 5 bytes.

[0093] Therefore, even if the node ID of the device changes during communication, the communication system of this embodiment can also use such node IDs (701-703) to detect changes in the ...

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Abstract

In a communication system capable of automatically recognizing the connection status of a plurality of devices, ID information specific to each device is queried and information on the function of each device is detected from the ID information. Information indicating the functions and characteristics of each device can then be easily obtained without increasing the amount of communication.

Description

technical field [0001] The present invention relates to an apparatus and method for detecting device information including information about a selected device, and more particularly to a technique of digital information communication using a digital interface. Background technique [0002] Recently, a communication system has been developed in which a personal computer (PC) is connected to a digital video camera through a digital interface, in which images taken using the digital video camera are supplied to the personal computer as digital signals and freely edited on the personal computer. [0003] Among the digital interface technologies that can be used to configure such a communication system, there is known the IEEE Standard for High Performance Serial Bus (hereinafter referred to as the IEEE 1394-1995 Standard). [0004] In a communication system constituted with a digital interface of the IEEE 1394-1995 standard, communication between devices is controlled by a node ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/00G06F13/14G06F9/445G06F13/38H04L12/28H04L12/40H04L12/64
CPCH04L12/40117G06F9/4411H04L12/40123H04L12/66
Inventor 小山信一
Owner CANON KK