CN1864623A - Operate-on-demand type wireless capsule endoscope based on JPEG2000 - Google Patents
Operate-on-demand type wireless capsule endoscope based on JPEG2000 Download PDFInfo
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- CN1864623A CN1864623A CN 200610054320 CN200610054320A CN1864623A CN 1864623 A CN1864623 A CN 1864623A CN 200610054320 CN200610054320 CN 200610054320 CN 200610054320 A CN200610054320 A CN 200610054320A CN 1864623 A CN1864623 A CN 1864623A
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Abstract
The present invention discloses one kind of radio endoscope capsule based on JPEG2000 including one CPU set in the center of the casing. The radio endoscope capsule features the CPU with output connected electrically to an image sensor, an image compression module, a data buffering memory, an RF transmitter and a controllable lighting device, and input connected electrically to a low frequency receiver; and the successive electric connection of the optical system, the image sensor, the image compression module, the data buffering memory and the RF transmitter. The radio endoscope capsule has no magnetically controlled power switch, no inconvenience in storing and transportation and low power consumption device resulting in microampere level current consumption of the system and long effective work time; and can send image data and change the image decoding parameter according to requirement.
Description
Technical field
The present invention relates to a kind of gastral instrument of human body that is used for, especially adopt electronic endoscope system, based on JPEG2000 compression algorithm, on-demand wineless endoscope capsule.
Background technology
For comprising the human body alimentary canal of esophagus, stomach, small intestinal, large intestine etc.,, just very difficult and usually inaccurate always to the detection of its diseased region owing at inside of human body; Be exactly splanchnoscopy to the most frequently used, the most direct method of the inspection of human body alimentary canal at present.Endoscope develops into wireless from wired form (transmission endoscopic picture), and wireless endoscope is because of it can alleviate person under inspection's discomfort, higher resolution adapts to the needs in market gradually.
Mainly containing of domestic applications: Tsing-Hua University's application with wireless two-way capsule endoscope related invention patent, " bi-directional digital formula wireless endoscope system " and working method thereof, the application number or the patent No. are CN03109810.X, but to be a kind of two-way wireless communication controlled and Real Time Observation image, digital and bi-directional digital formula wireless endoscope system that all-digestive tract is checked for it, contain the digital endoscope image pick-up device of wireless receiving and dispatching, portable mobile wireless reception and data transmission device and computer control and blood processor; Jinshan Science and Technology's application, " duplex multipath intelligent capsule wireless endoscope system ", the application number or the patent No. are CN200510020338.4, it is a kind of duplex multipath intelligent capsule wireless endoscope system, comprise intelligent capsule digestive tract endoscope, image recording and intelligent capsule controller, described intelligent capsule digestive tract endoscope comprises the optical clear protecgulum that is connected with housing, be installed in the intravital LED illumination array of shell, opticator, camera module, the magnetic control power switching module, radio-frequency (RF) receiving and transmission module, microprocessor, antenna and battery; Jinshan Science and Technology's application, " method for controlling duplex multi-channel intelligent capsule digestive tract endoscope ", the application number or the patent No. are CN200510020381.0, it is a kind of method for controlling duplex multi-channel intelligent capsule digestive tract endoscope, be used for intelligent capsule digestive tract endoscope is controlled, described image recording comprises dual-mode antenna battle array, radio-frequency (RF) receiving and transmission module, microprocessor, digital signal processor (DSP) and the memorizer that is connected with its bus with the intelligent capsule controller.Their weak point mainly contains: wineless endoscope capsule or system adopt the magnetic control power switching module to come control system to avoid capsule work in the storage and transport process, consume extra electric current, are unfavorable for storage and transportation like this; Adopt radio-frequency antenna or radio-frequency antenna array to realize two-way communication, can increase the power consumption of system like this, reduce its effective time; And to capsular control only on the frame rate of control parameter of picture decoding and transmission.
Summary of the invention
The present invention is directed to needs to use the magnetic control power switching module and owing to adopt radio-frequency antenna or radio-frequency antenna array to realize that the two-way communication meeting increases system power dissipation in the storage of existing wireless endoscope and the Transportation Engineering, proposed a kind ofly to be convenient to store, the on-demand wineless endoscope capsule based on JPEG2000 of transportation and low-power consumption.
Technical scheme of the present invention: a kind of on-demand wineless endoscope capsule based on JPEG2000, comprise housing and place the intravital central processing unit of shell, it is characterized in that: the outfan of described central processing unit is electrically connected with imageing sensor, image compression module, Data Buffer Memory, radio frequency dispensing device, controllable lighting device, and the input of described central processing unit is electrically connected with low frequency receiver; Optical system is electrically connected with imageing sensor, and imageing sensor is electrically connected with image compression module, and image compression module is electrically connected with Data Buffer Memory, and Data Buffer Memory is electrically connected with the radio frequency dispensing device.
The outfan of described central processing unit is electrically connected with imageing sensor, image compression module, Data Buffer Memory through programming device again;
The mode of operation of described central processing unit comprises sleep and normal transmit status.
The present invention is based on the on-demand wineless endoscope capsule of JPEG2000, broken away from the restriction of magnetic control power switching module, avoided the inconvenience of capsule storage and transport.All adopt the magnetic control power switching module whether to control capsular work in original system.Because capsule is not entering image data not of human body, even and when entering human body also acquisition of image data not, at this moment all need to control capsule and send image with lower speed, perhaps do not gather and send image, and adopt the magnetic control power switching module also to play function corresponding just.The present invention has cancelled the magnetic control on and off switch, adopts the device of low-power consumption, and this system only consumes the electric current that is lower than the uA level under low-power consumption mode, and the electric energy of this system consumption is very little, has guaranteed the effective time of system to greatest extent.
Can send view data as required.Capsular mode of operation comprises: sleep pattern, normal mode of operation.All enter sleep pattern, the power consumption that system consumption is extremely low in capsule manufacture and preservation, haulage stage; When taking this capsule and do not enter surveyed area, patient use the frame per second of low rate to send data; Use suitable frame per second to send data when capsule enters surveyed area, and can change the parameter of picture decoding as required, these parameters can be by external control.
Description of drawings
The present invention is further described below in conjunction with accompanying drawing
Fig. 1 is the system structure sketch that the present invention is based on the on-demand wineless endoscope capsule of JPEG2000
Fig. 2 is the operation principle sketch that the present invention is based on the on-demand wineless endoscope capsule of JPEG2000
Fig. 3 is a kind of specific embodiment figure that the present invention is based on the on-demand wineless endoscope capsule circuit structure of JPEG2000
The specific embodiment
The on-demand wineless endoscope capsule that the present invention is based on JPEG2000 comprises a closure casing, and following components is set in the closure casing: optical system, imageing sensor, image compression module, Data Buffer Memory, programming device, central processing unit, controllable lighting device, low frequency receiver and radio frequency dispensing device.Optical system is electrically connected with imageing sensor, and imageing sensor is electrically connected with image compression module, and image compression module is electrically connected with Data Buffer Memory, and Data Buffer Memory is electrically connected with the radio frequency dispensing device; The output interface of central processing unit is electrically connected with programming device, radio frequency dispensing device, controllable lighting device, and programming device is electrically connected with imageing sensor, image compression module, Data Buffer Memory respectively again; Low frequency receiver is electrically connected with the input interface of central processing unit.
The optical system of apparatus of the present invention is mainly finished the enhancing of optical signalling, is convenient to imageing sensor and collects suitable image.Mainly comprise optical lens, photographic head and installation, coupling etc.
The imageing sensor of apparatus of the present invention is mainly finished the collection and the decoding of the signal of image, finally obtains Digital Image Data.Imageing sensor adopts digital cmos image sensor in apparatus of the present invention, and it has low-power consumption and undersized advantage.The form of the decoding parametric of imageing sensor and decoding all is to finish configuration by the I2C interface of central processing unit, is controlled through programming device by the order that central processing unit sends.
The image compression module of apparatus of the present invention reduces every two field picture compression that imageing sensor collects its memory headroom that takies, can send in a short period of time.Compress mode is that the compression of images that will collect is the JPEG2000 file format, reduces the transmission delay of view data like this.Image compression module is controlled through programming device by the order that central processing unit sends.
JPEG full name is Joint Photographic Experts Group, and it is one and is engaged in the committee that Joint Photographics Expert Group JPEG is formulated under International Standards Organization (ISO).It has made the first cover GB Joint Photographics Expert Group JPEG: ISO 10918-1 is exactly the JPEG that we are commonly called as.JPEG2000, formal name is called " ISO 15444 ", is equally to be responsible to define by the JPEG tissue.JPEG2000 is different with traditional JPEG maximum, be the block coding mode that it has abandoned that JPEG adopted based on discrete cos conversion (Discrete CosineTransform), and changing many parsings coded system of adopting based on wavelet conversion (Wavelet transform), the purpose of wavelet conversion is the frequency content of image will to be extracted.
1, JPEG2000 is as the JPEG upgrade version, and high compression (low bit speed rate) is its target, and its compression ratio is higher by about about 30% than JPEG.
2, JPEG2000 supports to diminish and lossless compress simultaneously, and JPEG can only support lossy compression method.Lossless compress is very useful to preserving some important picture.
3, JPEG2000 can realize progressive transmission, and this is the extremely important feature of JPEG2000.Our " coming out gradually " characteristic that the GIF format image is often said just.The profile of its first images progressively transmits data then, improves constantly picture quality, allow image by dim to clear demonstration, and need not to be, from top to bottom slowly demonstration as present JPEG.
4, JPEG2000 supports so-called " area-of-interest " characteristic, and you can specify the compression quality of your area-of-interest on the image arbitrarily, can also select specified part to decompress earlier.We just can give top priority to what is the most important very easily like this
The Data Buffer Memory of apparatus of the present invention is mainly finished the buffer memory of data, after image compression module is with a two field picture boil down to JPEG2000 formatted file, be kept in the buffer, by the control of central processing unit, Data Buffer Memory sends data through the radio frequency sending module again.Data Buffer Memory is controlled through programming device by the order that central processing unit sends.
The controllable lighting device of apparatus of the present invention mainly provides the illumination during images acquired in human body of this device, and the flash lamp during similar photograph under the order control that central processing unit sends, works asynchronously with imageing sensor; The system of apparatus of the present invention adopts different intensity irradiation images according to the requirement of image, and the exposure rate of controllable lighting device is adjustable, mainly by control size of current of lighting circuit and how much finishing of light source.
The low frequency receiver of apparatus of the present invention is mainly finished the collection of low frequency signal, controller has the carrier wave of command signal to send by suitable manner modulation, after low frequency receiver receives carrier wave, demodulate command signal, finish the modification of relevant parameter by the control of central processing unit.Main control parameter has: the form of intensity of illumination, picture decoding, compression ratio, frame rate, system works pattern.By operator's the requirement signal of giving an order, this controller and low frequency receiver are complementary the controller that matches with low frequency receiver outside human body; This controller is as prior art, and is not protection main points of the present invention, do not do detailed description at this.
The radio frequency dispensing device of apparatus of the present invention is mainly finished the transmission of view data, and the response signal of returning the low frequency order.Radio-frequency module is finished work such as the coding, modulation of data.When preserving view data in the Data Buffer Memory, the order control by central processing unit sends to the radio frequency sending module with data, sends through the radio frequency sending module, is received the signal that sends by receiving system.And after the low frequency receiver module was received correct control command, central processing unit was by the indication response of radio frequency sending module transmit operation success.With the receiving system that this radio frequency dispensing device matches, this receiving system and radio frequency dispensing device are complementary; This receiving system is as prior art, and is not protection main points of the present invention, do not do detailed description at this.
Low frequency receiver of the present invention, radio frequency dispensing device are and traditional high-frequency receiver, the different low frequencies device of transmitter; Can receive, send corresponding low frequency signal, play effect two-way, wireless transmission.Every two field picture that its inner imageing sensor collects is behind the image compression module compressed image, be kept in the Data Buffer Memory, under the control of central processing unit, outwards send compressed image (receiving system by adapted receives), outside control instruction is by the controller that the matches signal of giving an order, receive by low frequency receiver, finish the modification of relevant parameter again by the control of central processing unit.
The main completion logic control of the programming device of apparatus of the present invention.It obtains data from central processing unit, the operation that judgement need be finished, thereby the duty of the relevant parameter of control figure image-position sensor and image compression module and imageing sensor, image compression module and Data Buffer Memory.
The central processing unit of apparatus of the present invention mainly is the control of the transmission of the control of finishing the control of whole system and control that management comprises relevant parameter, correlation timing, signal and reception, system power dissipation.Relevant parameter comprises the parameter of picture decoding, the parameter of compression, the parameter of intensity of illumination.The control of correlation timing comprises the sequential of sequential, data buffering and the radio frequency between time sequential routine, compression of images and the data buffering between picture decoding and the compression of images between sending.The power consumption control of system comprises that mode of operation and corresponding work time that each module is set also make whole system reach minimum power consumption.The mode of operation of central processing unit comprises sleep and normal transmit status, can revise the frame rate of transmission under the normal pattern that sends.Under normal transmission mode, revise the interval that sends according to the frame rate that sends, in case a frame image data is sent completely, system enters low-power consumption mode.No longer send view data under sleep pattern, whole system only is in monitors the data mode that low frequency receives, and can make the extremely low power consumption of whole system consumption like this.The system that can guarantee so just sends data in as required, the assurance system does not send view data when the image receiving unit is not worked.Whole system consumes the power consumption of uA level under low-power consumption mode, thereby prolongs the working time of wineless endoscope capsule.And central processing unit also will be controlled programming device, the data of finishing between compression of images, radio frequency transmission and the Data Buffer Memory connect, can guarantee so not work simultaneously when data acquisition and radio frequency send, and also can guarantee the zero access between data and the buffer, reduce time delay, because radio-frequency module and data acquisition bigger power consumption of consumption rate all as far as possible.Can guarantee the power that whole system consumption is lower by above control.
The central processing unit of apparatus of the present invention is responsible for the management of whole device operation, is " brain " of apparatus of the present invention, or claims microprocessor, and the requirement that its internal memory and/or function can satisfy date processing gets final product; Central processing unit sends " order " to the imageing sensor that is electrically connected with it, programming device, Data Buffer Memory, radio frequency dispensing device, controllable lighting device, makes said apparatus or parts produce function corresponding or action.
Capsule endoscope of the present invention, since be referred to as " capsule ", and enter in the digestive tract of human body, should adopt a closure casing, have with human body that biocompatible material makes, taking pictures finds a view holds is transparent closure casing, with above-mentioned optical system, imageing sensor, image compression module, Data Buffer Memory, programming device, central processing unit, controllable lighting device, low frequency receiver and radio frequency dispensing device are arranged in this closure casing, its physical dimension should match with the gastral physiological parameter of human body, enter internal energy order photographic images according to central processing unit of the digestive tract of human body etc., and image sent out with low frequency signal, after the receiving device acceptance with the outside, after routine or prior art processing, for the usefulness of the diagnosis state of an illness.
Capsule endoscope of the present invention adopts low frequency near-field communication technology to be used for wineless endoscope capsule, has reduced the system wait power consumption, has satisfied the requirement of system low-power consumption, and the method to the parameter control of the work of system is provided.The low frequency near-field communication (Near Field Communication, NFC), its basis is an electromagnetic induction phenomenon, it is by realizing radio communication in the quasistatic magnetic field that transmits and receives low-power of coupling, non-propagation between the coil.Magnetic field energy has very strong decay, is particularly suitable for closely, the WPAN communication in radio communication, especially the 1-3 rice scope of low rate.Compare with other short distance RF technology, NFC has bigger advantage at aspects such as power consumption, cost, volume size and safeties.The progress of near-field communication (NFC) is very fast, finds application as a kind of mature technology now.As the MCP2030 chip and the LC resonance circuit that adopt MICROCHIP company to produce have just constituted a low frequency magnetic field receiver module, the transfer of data of (in the 1-3 rice scope) when being particularly suitable for close together.
As shown in Figure 3, the present invention is based on a kind of specific embodiment figure of the on-demand wineless endoscope capsule circuit structure of JPEG2000; Among the figure, IC1 is the radio frequency sending module, IC2 is the low frequency receiver module, IC3 is an imageing sensor, IC4 is programming device (image compression module is arranged in the programming device IC4 usually, integrates), and IC5 is a Data Buffer Memory, for IC6 is a central processing unit, IC7, IC8, IC9 are power module; The outfan of central processing unit IC6 is through programming device IC4, be electrically connected with image sensor IC 3, image compression module, Data Buffer Memory IC5, radio frequency dispensing device IC1, controllable lighting device, the input of described central processing unit IC6 is electrically connected with low frequency receiver IC2; Optical system is electrically connected with image sensor IC 3, and image sensor IC 3 is electrically connected with image compression module, and image compression module is electrically connected with Data Buffer Memory IC5, and Data Buffer Memory IC5 is electrically connected with the radio frequency dispensing device.
The work process of apparatus of the present invention is:
External image is gathered by imageing sensor through optical system.The data that imageing sensor collects are compressed the image that obtains certain byte number through image compression module, and data are saved in the Data Buffer Memory.When detecting the signal that does not have same frequency in the air, the radio frequency sending module when sending data, sends out picture signal.Whole system enters low-power consumption mode after data are sent completely.Only open low frequency receiving port of central processing unit and intervalometer interrupt two resources.The timing interruption of intervalometer is according to the frame rate setting that sends.If the low frequency receiving port receives correct control command, then revise relevant parameters, and send out corresponding response signal by the radio frequency sending module; If the intervalometer timing is to then opening imageing sensor and compression of images and data buffering module, in case the image data acquiring success need be changed to low-power consumption mode with imageing sensor and image compression module.Open the radio frequency sending module then, image data transmission is gone out, after data are sent completely the radio frequency sending module is changed to low-power consumption mode.
Claims (4)
1, a kind of on-demand wineless endoscope capsule based on JPEG2000, comprise housing and place the intravital central processing unit of shell, it is characterized in that: the outfan of described central processing unit is electrically connected with imageing sensor, image compression module, Data Buffer Memory, radio frequency dispensing device, controllable lighting device, and the input of described central processing unit is electrically connected with low frequency receiver; Optical system is electrically connected with imageing sensor, and imageing sensor is electrically connected with image compression module, and image compression module is electrically connected with Data Buffer Memory, and Data Buffer Memory is electrically connected with the radio frequency dispensing device.
2, the on-demand wineless endoscope capsule based on JPEG2000 according to claim 1 is characterized in that: the outfan of described central processing unit is electrically connected with imageing sensor, image compression module, Data Buffer Memory through programming device again.
3, the on-demand wineless endoscope capsule based on JPEG2000 according to claim 1 and 2 is characterized in that: described image compression module is to be kept in the Data Buffer Memory behind the JPEG2000 formatted file with compression of images.
4, the on-demand wineless endoscope capsule based on JPEG2000 according to claim 3 is characterized in that: the mode of operation of described central processing unit comprises sleep state and normal transmit status.
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| CNB2006100543200A CN100382743C (en) | 2006-05-23 | 2006-05-23 | Operate-on-demand type wireless capsule endoscope based on JPEG2000 |
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| CNB2006100543200A CN100382743C (en) | 2006-05-23 | 2006-05-23 | Operate-on-demand type wireless capsule endoscope based on JPEG2000 |
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| CN100382743C CN100382743C (en) | 2008-04-23 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147668B (en) * | 2007-11-09 | 2010-06-02 | 清华大学 | Radio system and device for sampling image in a creature body cavity |
| CN102389287A (en) * | 2011-06-30 | 2012-03-28 | 豪威科技(上海)有限公司 | Multi-mode control detection method of capsule endoscope |
| CN102631178A (en) * | 2012-05-15 | 2012-08-15 | 重庆大学 | Micro-traumatic superfine endoscope system |
| CN101669808B (en) * | 2009-09-18 | 2012-10-03 | 重庆邮电大学 | Wireless endoscope control device |
| CN109008909A (en) * | 2018-07-13 | 2018-12-18 | 宜宾学院 | A kind of low-power consumption capsule endoscope Image Acquisition and three-dimensional reconstruction system |
| CN113920042A (en) * | 2021-09-24 | 2022-01-11 | 深圳市资福医疗技术有限公司 | Image processing system and capsule endoscope |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7729776B2 (en) * | 2001-12-19 | 2010-06-01 | Cardiac Pacemakers, Inc. | Implantable medical device with two or more telemetry systems |
| US20040106849A1 (en) * | 2002-12-03 | 2004-06-03 | Cho Jin-Ho | Multi-functional, bi-directional communication telemetry capsule |
| EP2263513B1 (en) * | 2003-06-24 | 2013-08-07 | Olympus Corporation | Capsule type medical device communication system, capsule type medical device, and biological information reception device |
| EP1897484B1 (en) * | 2004-03-04 | 2015-12-30 | Olympus Corporation | Endoscope image pickup device |
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2006
- 2006-05-23 CN CNB2006100543200A patent/CN100382743C/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101147668B (en) * | 2007-11-09 | 2010-06-02 | 清华大学 | Radio system and device for sampling image in a creature body cavity |
| CN101669808B (en) * | 2009-09-18 | 2012-10-03 | 重庆邮电大学 | Wireless endoscope control device |
| CN102389287A (en) * | 2011-06-30 | 2012-03-28 | 豪威科技(上海)有限公司 | Multi-mode control detection method of capsule endoscope |
| CN102631178A (en) * | 2012-05-15 | 2012-08-15 | 重庆大学 | Micro-traumatic superfine endoscope system |
| CN109008909A (en) * | 2018-07-13 | 2018-12-18 | 宜宾学院 | A kind of low-power consumption capsule endoscope Image Acquisition and three-dimensional reconstruction system |
| CN109008909B (en) * | 2018-07-13 | 2024-01-26 | 宜宾学院 | Low-power-consumption capsule endoscope image acquisition and three-dimensional reconstruction system |
| CN113920042A (en) * | 2021-09-24 | 2022-01-11 | 深圳市资福医疗技术有限公司 | Image processing system and capsule endoscope |
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