TWI474720B - Universal serial bus device applied to webcams and control method thereof - Google Patents

Description

Universal serial bus device for network camera and method for controlling same

The present invention relates to a universal serial bus arrangement for a network camera and a method for controlling the same, and more particularly to a universal serial bus arrangement having at least two input interfaces and a method for controlling the same.

Please refer to FIG. 1 . FIG. 1 is a schematic diagram of an image generated by the host 100 receiving the two image sensors 108 , 110 through the two universal serial bus devices 102 , 104 and a hub 106 . As shown in FIG. 1 , the universal sequence bus bar device 102 is only used to receive the image IA generated by the image sensor 108 and perform image processing on the image IA to generate a first image IA′; the universal sequence bus bar device 104 It is only used to receive the image IB generated by the image sensor 110, and image processing the image IB to generate a second image IB'. The hub 106 is configured to receive and transmit the first image IA' and the second image IB' to the host 100. The operating software on the host 100 can determine the input order of the first image I' and the second image IB', and can transmit the first image IA' and the second image IB' to the Internet.

However, as shown in FIG. 1, a general-purpose serial bus device can only receive images generated by an image sensor, so when the host needs images generated by a plurality of image sensors, the host must use the complex number. A universal serial bus device receives images generated by a plurality of image sensors. Therefore, the universal serial busbar device provided by the prior art is not a convenient and practical device for the user.

An embodiment of the present invention provides a universal serial bus device for use in a network camera. The universal serial bus device includes at least two input interfaces, an input interface control unit, and an image input interface. Each of the at least two input interfaces is coupled to an image sensor and configured to receive an image generated by the image sensor and an identification bit corresponding to the image sensor; The input interface control unit is coupled to the at least two input interfaces for controlling the at least two input interfaces to receive the at least two when the image generated by the at least two image sensors is at least two images for synthesizing the 3D image. An image generated by the image sensor and an identification bit corresponding to the at least two image sensors; the image input interface is coupled to the input interface control unit for receiving and transmitting the generated by the at least two image sensors And an image and an identification bit corresponding to the at least two image sensors.

Another embodiment of the present invention provides a universal serial bus arrangement for use in a webcam. The universal serial bus device includes at least two input interfaces, an input interface control unit, and an image input interface. Each of the at least two input interfaces is coupled to an image sensor and configured to receive an image generated by the image sensor and an identification bit corresponding to the image sensor; The input interface control unit is coupled to the at least two input interfaces for controlling the at least two input interfaces to rotate or receive the sequence when the image generated by the at least two image sensors is at least two images that are not used to synthesize the 3D image. The image generated by the at least two image sensors and the identification bit corresponding to the at least two image sensors; the image input interface is coupled to the input interface control unit for receiving and transmitting the at least two image sensing The image generated by the device and the identification bit corresponding to the at least two image sensors.

Another embodiment of the present invention provides a method of controlling a universal serial bus device applied to a network camera. The method includes at least two input interfaces for receiving images generated by at least two image sensors, and corresponding to the identification bits of the at least two image sensors; determining whether the images generated by the at least two image sensors are at least two The image of the 3D image is synthesized; according to a judgment result, the at least two input interfaces perform corresponding operations.

The present invention provides a universal serial bus arrangement for a webcam and a method of controlling the same. The universal sequence busbar device and the method for controlling the same use at least two input interfaces to receive images generated by at least two image sensors and identification bits corresponding to the at least two image sensors. When the image generated by the at least two image sensors is an image for synthesizing the 3D image, the universal sequence bus device receives the image generated by the at least two image sensors in turn; when the at least two image senses When the image generated by the detector is an image that is not used to synthesize the 3D image, the universal sequence bus device receives the image generated by the at least two image sensors in turn or in sequence. Therefore, the present invention can solve the problem that in the prior art, when a host needs images generated by a plurality of image sensors, the host must receive the plurality of image sensors by using a plurality of universal sequence bus devices. The shortcomings of the image.

Please refer to FIG. 2A and FIG. 2B. FIG. 2A is a schematic diagram showing a general-purpose serial busbar device 200 applied to a network camera according to an embodiment of the present invention, and FIG. 2B is a diagram illustrating two-input interface receiving images in turn. Schematic diagram. The universal serial bus device 200 includes two input interfaces 202, 204, an input interface control unit 206, and an image input interface 208. The input interface 202 is coupled to an image sensor 210 for receiving the image A generated by the image sensor 210 and the identification bit IB210 corresponding to the image sensor 210; the input interface 204 is used for The image sensor 212 is coupled to the image sensor 212 and receives the image B generated by the image sensor 212 and the identification bit IB212 corresponding to the image sensor 212. However, the invention is not limited to having only two input interfaces 202,204. The input interface control unit 206 is coupled to the two input interfaces 202 and 204 for controlling the two input interfaces 202 when the images A and B generated by the two image sensors 210 and 212 are used to synthesize images of the 3D image. The 204 receives the images A and B generated by the two image sensors 210 and 212 and the identification bits IB210 and IB212 corresponding to the two image sensors 210 and 212 (as shown in FIG. 2B ). In addition, the image A and the image B are at least one left eye image and at least one right eye image, and the image A and the image B are the same. The image input interface 208 is coupled to the input interface control unit 206 for receiving and transmitting the images A and B generated by the image sensors 210 and 212 and the identification bits IB210 and IB212 corresponding to the image sensors 210 and 212. In addition, the image sensors 210 and 212 are Charge-coupled Device (CCD) image sensors and/or complementary Metal-Oxide-Semiconductor (CMOS) image sensors.

The universal serial bus device 200 further includes a central processing unit 214, an image processing unit 216, an image compression unit 218, and a universal serial bus physical layer 220. The image processing unit 216 is coupled to the image input interface 208 for performing image processing on the images A and B generated by the image sensors 210 and 212 to generate two first images A1 and B1, wherein the image processing includes scaling. , adjust color, adjust brightness, adjust resolution, remove noise, edge enhancement, interpolation, and/or adjust contrast. The image compression unit 218 is coupled to the image processing unit 216 for performing data compression on the first images A1 and B1 to generate two second images A2 and B2. The image compression unit 218 performs data according to the Motion JPEG compression technology. Compression; the universal sequence bus physical layer 220 is used to connect the universal sequence bus device 200 with a host 222 and transmit the second images A2, B2 to the host 222. In addition, the host 222 can transmit the second images A2 and B2 to the Internet, and identify the image A by identifying the bits IB210 and IB212. The image A is generated and recognized by the image sensor 210. The image B is generated by the image sensor 212. .

In addition, in another embodiment of the present invention, when the images A and B generated by the image sensors 210 and 212 are not images for synthesizing 3D images, the central processing unit 216 controls the input interfaces 202 and 204 to take turns. Or the sequence receives the images A, B generated by the image sensors 210, 212 and the identification bits IB210, IB212 corresponding to the image sensors 210, 212. Please refer to FIG. 2C. FIG. 2C is a schematic diagram illustrating the sequence of receiving images A and B in the input interfaces 202 and 204. In addition, when the images A and B generated by the image sensors 210 and 212 are not images for synthesizing 3D images, the pixels of the images A and B may be the same or different.

Please refer to FIG. 3. FIG. 3 is a flow chart showing a method for controlling a universal serial busbar device applied to a network camera according to another embodiment of the present invention. The method of FIG. 3 is illustrated by the universal sequence bus bar device 200 of FIG. 2A. The detailed steps are as follows: Step 300: Start; Step 302: The input interface 202 receives the image A generated by the image sensor 210 and corresponds to image sensing. The identification bit IB210 of the device 210, and the input interface 204 receives the image B generated by the image sensor 212 and the identification bit IB212 corresponding to the image sensor 212. Step 304: The host 222 determines whether the images A and B are used. Synthesize images of 3D images? If yes, go to step 306; if no, go to step 308; Step 306: Input interface control unit 206 controls input interfaces 202, 204 to receive images A and B generated by image sensors 210, 212 in turn, and corresponding to image sensors The identification bits IB210, IB212 of 210, 212; skip to step 310; Step 308: The central processing unit 214 controls the input interfaces 202, 204 to alternately receive the images A and B generated by the image sensors 210, 212 and corresponding to the images. The identification bits IB210, IB212 of the sensors 210, 212; the step 310: the image processing unit 216 performs image processing on the images A, B generated by the image sensors 210, 212 to generate the first images A1, B1; The image compression unit 218 performs data compression on the first images A1 and B1 to generate second images A2 and B2. Step 314: The universal sequence bus physical layer 220 transmits the second images A2 and B2 to the host 222. Step 316: End .

In step 306, the image A and the image B are at least one left eye image and at least one right eye image, and the image A and the image B are the same. In step 308, when the images A and B are images that are not used to synthesize 3D images, the pixels of the images A and B may be the same or different. In step 310, image processing includes zooming, adjusting colors, adjusting brightness, adjusting resolution, removing noise, enhancing edges, interpolation, and/or adjusting contrast. In step 312, the image compression unit 218 performs data compression according to the Motion JPEG compression technique. In step 314, the host 222 can transmit the second images A2, B2 to the Internet, and identify the image A by identifying the bits IB210, IB212. The image sensor A is generated and recognized by the image sensor 210. The device 212 is generated.

In summary, the universal sequence busbar device applied to the network camera and the method for controlling the universal serial busbar device applied to the network camera provided by the present invention utilize a universal serial busbar device including at least two input interfaces. Receiving images generated by at least two image sensors and corresponding identification bits. When the image generated by the two image sensors is an image for synthesizing the 3D image, the universal sequence bus device receives the image generated by the two image sensors in turn; when the image is generated by the two image sensors When the image is not used to synthesize 3D images, the universal serial bus device receives images generated by the two image sensors in turn or in sequence. Therefore, the present invention can solve the disadvantages of the prior art that when the host needs images generated by a plurality of image sensors, the host must receive images generated by the plurality of image sensors by using a plurality of universal serial bus devices. .

The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

100, 222. . . Host

102, 104, 200. . . Universal serial busbar device

106. . . Hub

108, 110, 210, 212. . . Image sensor

202, 204. . . Input interface

206. . . Input interface control unit

208. . . Image input interface

214. . . CPU

216. . . Image processing unit

218. . . Image compression unit

220. . . Universal sequence bus physical layer

A, B, IA, IB. . . image

A1, B1, IA’. . . First image

A2, B2, IB’. . . Second image

IB210, IB212. . . Identification bit

300 to 316. . . step

1 is a schematic diagram of an image generated by a host receiving two image sensors through two universal serial bus devices and a hub.

2A is a schematic diagram showing a general-purpose serial busbar device applied to a network camera according to an embodiment of the present invention.

Figure 2B is a schematic diagram illustrating the two input interfaces receiving images in turn.

Figure 2C is a schematic diagram illustrating the reception of images by a two-input interface sequence.

Figure 3 is a flow chart illustrating a method of controlling a universal serial bus arrangement applied to a network camera in accordance with another embodiment of the present invention.

200‧‧‧Universal serial busbar device

202, 204‧‧‧ input interface

206‧‧‧Input interface control unit

208‧‧‧Image input interface

210, 212‧‧‧ image sensor

214‧‧‧Central Processing Unit

216‧‧‧Image Processing Unit

218‧‧•Image compression unit

220‧‧‧Common sequence bus physical layer

222‧‧‧Host

A, B‧‧ images

A1, B1‧‧‧ first image

A2, B2‧‧‧ second image

IB210, IB212‧‧‧ identification bits

Claims (14)

A general-purpose serial bus device for a network camera, comprising: at least two input interfaces, each input interface is coupled to an image sensor, and configured to receive an image generated by the image sensor, and Corresponding to the identification bit of the image sensor; a central processing unit; an input interface control unit coupled to the at least two input interfaces, wherein at least two image sensors generate at least two images for synthesis In the image of the 3D image, the input interface control unit controls the at least two input interfaces to receive the image generated by the at least two image sensors and the identification bit corresponding to the at least two image sensors, and when the at least two images are When the image generated by the sensor is at least two images that are not used to synthesize the 3D image, the central processor controls the at least two input interfaces to receive or sequentially receive the image generated by the at least two image sensors and corresponding to the at least two An image sensor input interface coupled to the input interface control unit for receiving and transmitting the at least two image sensors And an image and an identification bit corresponding to the at least two image sensors. The universal sequence bus arrangement device of claim 1, wherein the pixels of the at least two images that are not used to synthesize the 3D image are the same. The universal sequence busbar device of claim 1, wherein the at least two are not used The pixels of the synthesized 3D image are different in pixel. The universal sequence bus device of claim 1, further comprising: an image processing unit coupled to the image input interface for performing image processing on the image generated by the at least two image sensors to generate At least two first images; an image compression unit coupled to the image processing unit for performing data compression on the at least two first images to generate at least two second images; and a universal sequence bus layer physical layer Connecting the universal serial bus device to a host and transmitting the at least two second images to the host. The universal sequence bus arrangement of claim 4, wherein the image processing comprises scaling, adjusting color, adjusting brightness, adjusting resolution, removing noise, edge enhancement, interpolation, and/or Adjust the contrast. The universal sequence bus arrangement device of claim 1, wherein the at least two images for synthesizing the 3D image are at least one left eye image and at least one right eye image. The universal sequence bus arrangement device of claim 1, wherein the pixels of the at least two images used to synthesize the 3D image are the same. A method of controlling a universal serial bus device for use in a network camera, wherein the universal serial bus device includes at least two input interfaces, a central processing The method includes: the at least two input interfaces receive images generated by at least two image sensors, and the identification bits corresponding to the at least two image sensors; determining the Whether the image generated by the at least two image sensors is at least two images for synthesizing the 3D image; and when the image generated by the at least two image sensors is the at least two images for synthesizing the 3D image, the input interface is controlled The unit controls the at least two input interfaces to receive the image generated by the at least two image sensors and the identification bit corresponding to the at least two image sensors, and when the image generated by the at least two image sensors is at least two When the image is used to synthesize the 3D image, the central processor controls the at least two input interfaces to receive or sequentially receive the image generated by the at least two image sensors and the identification bit corresponding to the at least two image sensors. The method of claim 8, wherein the pixels of the at least two images that are not used to synthesize the 3D image are the same. The method of claim 8, wherein the pixels of the at least two images that are not used to synthesize the 3D image are different. The method of claim 8, further comprising: an image processing unit performing image processing on the image generated by the at least two image sensors to generate at least two first images; An image compression unit compresses the at least two first images to generate at least two second images; and a universal sequence bus physical layer transmits the at least two second images to a host. The method of claim 11, wherein the image processing comprises scaling, adjusting color, adjusting brightness, adjusting resolution, removing noise, enhancing edges, interpolating, and/or adjusting contrast. The method of claim 8, wherein the at least two images used to synthesize the 3D image are at least one left eye image and at least one right eye image. The method of claim 8, wherein the pixels of the at least two images used to synthesize the 3D image are the same.