CN1788270A - Optical code reader with autofocus and interface unit - Google Patents
Optical code reader with autofocus and interface unit Download PDFInfo
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- CN1788270A CN1788270A CN200480007410.3A CN200480007410A CN1788270A CN 1788270 A CN1788270 A CN 1788270A CN 200480007410 A CN200480007410 A CN 200480007410A CN 1788270 A CN1788270 A CN 1788270A
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Abstract
An optical code reader (12) having structure for focusing an imaging optics assembly on a target image. The optical code reader includes a chassis (910) and an imaging optics assembly (914) pivotally mounted on the chassis. The imaging optics assembly is housed within an opto-mechanical barrel (934) assembly. Pivotal movement of the opto-mechanical barrel assembly adjusts the focus of the imaging optics assembly on a target image. The optical code reader further includes an illumination device (918) and an aiming device (920). An interface assembly (28) interfaces an imaging engine (14) of the imaging optics assembly to a circuitry assembly of the optical code reader. The imaging engine (14) is removably positioned and/or dimensioned and configured to fit within a predetermined form factor.
Description
Technical field
The present invention relates to the imaging in the optical read decoding apparatus, relate in particular to the hand-held code reader based on solid-state area image sensor, this code reader is placed on the variable azimuth-range of relative object code.
Background of invention
The pattern that optical code is made up of the image-region with the reflection of different light or light emission characteristics, they are usually according to the principle combinations of priori.Term " bar code " is generally used for describing the optical code of some type.Select the optical characteristics and the pattern of optical code, manifest with its residing background environment and distinguish mutually to distinguish it.Be used for being also referred to as " optical read ink recorder " sometimes from optical code identification or the equipment that extracts data, bar code scanner is exactly wherein a kind of.
The optical read ink recorder is used for fixing in many varying environments and portable installation, follows the tracks of such as the luggage of the check-out services in market, makers' workflow and stock's control and communications and transportation and handles.Optical code can be used as quick, general data typing means, for example, and by from the printing tabulation of many bar codes, reading target bar.In some used, the optical read ink recorder linked to each other with transmission equipment with portable data treatment facility or data aggregation.The optical read ink recorder often comprises the hand-held sensor of manual alignment object code.
Most of traditional optical scanning systems are designed to read the one-dimensional bar code symbol.Bar code is the pattern of the rectangular strip of the variable-width separated at interval by fixing or variable-width.Bar code has different light reflectance signatures with the interval.An example of one-dimensional bar code is the UPC/EAN code that is used to discern such as product inventory.An example of two-dimentional or folded formula bar code is the PDF417 bar code.Another traditional optical code is called as " MaxiCode ".It is looped around outer hexagonal lattice by the eye center of the pattern of a camera view finder that is in the center or bull and one and forms.
Notice that the everyway of the present invention that disclose in this place can be applicable to the optical read ink recorder, usually, do not consider the optical code of the particular type that the optical read ink recorder is fit to read.The present invention also can be applicable to some image recognition that is associated or analysis.
The most conventional scanning system produces a branch of or multiple laser, and laser reflects from bar code symbol and enters this scanning system.Along one or more sweep traces of system, system obtains the corresponding continuous analog waveform of the light that is reflected with code.Then system with waveform decoder with information extraction from bar code.For example in the patent No. of authorizing Symbol Technologies company is 4251798 United States Patent (USP), disclosed the system of this general type.Equally in the patent No. of authorizing Symbol Technologies company is 5561283 United States Patent (USP), disclosed a kind of optical beam scanning system of be used to detect and decode one dimension and two-dimensional bar.
This scanning system is used for can manually targeted handheld unit.Common single scanner is an assembly that comprises the much bigger system of other scanner, computing machine, cable, data terminal etc.Such system often designs and builds based on the machinery and the optics standard of scanning engine, and these standards are sometimes referred to as " the structure factor ".A kind of such structure factor is by the designed SE1200 construction factor of Symbol Technologies company.
Optical code also can read by the optical read ink recorder that use has an imaging engine.Imaging engine comprises the imageing sensor with 2 D photoelectric pond or photon sensor array, and such as regional charge-coupled device (CCD), this device is corresponding with elementary area or pixel in the visual field of imaging engine.Imaging engine also comprises the lens subassembly that is used for incident light is focused on imageing sensor, and the associated circuits that is coupled to this imageing sensor.
This associated circuit produces the corresponding electronic signal of two-dimensional pixel information array with the visual field.Electronic signal is handled by processor, and this processor is used to extract the information of expression and the corresponding image focus quality in visual field.
Rapidly and the ability that makes scanner focus exactly be crucial to the success of scanner.This problem proposal scheme is comprised the assembly of packing in advance, such as piezoelectric actuator and micro motor.The success of each generation in these proposal schemes is all limited.Therefore, target of the present invention provides a kind of imaging engine that is used for the optical read decoding apparatus, and this equipment is provided as the more accurate and focusing faster of picture optical device.In addition, imaging engine is dimensioned to and is configured to meet the predetermined structure factor (such as make up the factor at present used SE900 and SE1200 such as using from the optical read ink recorder that Symbol Technologies company obtains), with reliability, multifunctionality and the focusing power that increases this type of code reader.
Summary of the invention
According to the present invention, provide a kind of optical read ink recorder system with improved imaging engine.This optical read ink recorder system comprises imaging engine, it is configured to realize 85 microns, 20 milliseconds with optical imaging system interior, the double focusing position, and purpose is to increase working range but does not destroy the scanning enthusiasm of the bar code scanning engine that uses the proton size.
According to one embodiment of the invention, optical read ink recorder system comprises chassis, the device by being pivotally mounted in the image optics assembly on the chassis and being used for the mobile imaging optical module, and the said apparatus that wherein is used to change over as the focusing of optical module makes the image optics assembly move on to one of two assigned addresses by rotation.The optical read ink recorder can comprise other, such as being used to illuminate the lighting device of target image or being used to help the sighting device of user with optical read ink recorder run-home image.
According to one embodiment of the invention, the device that is used to change over as the focusing of optical module comprises: motor sub-assembly, and it comprises again and is used for electromagnetic force is acted on magnet, coil block on the magnet; Be used to deposit the optical-mechanical tubbiness assembly of image optics assembly; And the pivot latch pin that is used for optical-mechanical tubbiness assembly is rotatably coupled to the chassis.Transmitting a signal to coil block makes coil block that electromagnetic force is acted on the magnet.Magnet links to each other with optical-mechanical tubbiness assembly, thereby optical-mechanical tubbiness assembly is rotated to regulate the focusing of optical read ink recorder around pivot latch pin.
According to the present invention, the imaging engine that is provided for having the adjustable lens assembly is connected to the interface module of the circuit unit of optical read ink recorder system.Interface module comprises the first coupled circuit assembly, is used for sending at least one input signal at the first direction from the circuit unit to the imaging engine.This at least one input signal comprises at least one focus control signal, is used for being controlled at the lens subassembly that at least two focal positions are selected a focal position.Interface module also comprises the second coupled circuit assembly, is used for sending at least one output signal in the second direction from the imaging engine to the circuit unit.This at least one output signal comprises at least one pixel data signal, and wherein this at least one pixel data signal is represented the light that photosensor array detected by imaging engine.
In another embodiment of the present invention, interface module has comprised the interface module of coupled circuit, this coupled circuit comprises again: first coupled circuit is used for sending at least one outside vertically frame clock signal at the first direction from the circuit unit to the imaging engine; Second coupled circuit is used for sending horizontal pixel efficient clock signal in the second direction from the imaging engine to the circuit unit; The 3rd coupled circuit is used for sending at least one master clock signal at first direction; The 4th coupled circuit is used for sending in second direction the pixel data of a plurality of bits, the light that this data representation is detected by the photon sensor array of imaging engine; And the 5th coupled circuit, be used for sending at least one focus control signal that is used to control lens subassembly selective focus position at first direction.
In yet another embodiment of the present invention, interface module comprises the connector with at least the first and second ends, and one of first and second ends comprise a plurality of contacts, these contacts comprise be used to send at least one signal first to the 31 contact.Interface module also comprises: first coupled circuit, be used for sending at least one focus control signal at the first direction from the circuit unit to the imaging engine, be used for selecting the lens subassembly of a focal position of at least two focal positions of lens subassembly with control, this first coupled circuit comprises four contacts in a plurality of contacts; Second coupled circuit, be used under first direction sends column signal one of at least: the first is used to control at least one illumination of the light fixture of optical read ink recorder system and enables signal, and at least one aiming that is used to control the aiming assembly of optical read ink recorder system enables signal, and this second coupled circuit comprises at least two contacts in a plurality of contacts; And the 3rd coupled circuit, be used for sending the pixel data of a plurality of bits in the second direction from the imaging engine to the circuit unit, this data representation is by the light that photosensor array detected of imaging engine, and the 3rd coupled circuit comprises eight contacts in a plurality of contacts; Wherein each included contact all is different contact in first to the 3rd coupled circuit.
In another embodiment of the present invention, one of below interface module comprises at least: one of the I/O of imaging engine (I/O) device, the I/O device of circuit unit, and the sending assembly that between imaging engine and circuit unit, connects, this sending assembly is configured to be used at least one signal is sent to the opposing party imaging engine and the circuit unit from a side of imaging engine and circuit unit.This at least one signal comprises: at least one pixel data signal, and its expression is by the light that photosensor array detected of imaging engine; At least one clock signal is used for the synchronous of imaging engine and circuit unit; At least one reference signal, it comprises at least one vertical frame reference siganl and at least one horizontal pixel reference signal; And at least one focus control signal, be used to control the adjusting of lens subassembly; And at least one ground signalling.
In another embodiment of the present invention, provide a kind of removable imaging engine that is used for to be positioned at the optical read ink recorder to be connected to the method for the circuit unit of optical read ink recorder system.This method comprises the steps: in the first direction from the circuit unit to the imaging engine to send at least one focus control signal, and the lens subassembly that is used for controlling imaging engine is selected a focal position of at least two focal positions; And in the second direction from the imaging engine to the circuit unit, send at least one pixel data signal, the light that this signal indication is detected by the photon sensor array of imaging engine.
The size of imaging engine is decided to be at last and is configured to removable placement and meets the predetermined structure factor simultaneously, such as make up the factor at the SE900 and the SE1200 that can use from the optical read ink recorder that Symbol Technologies company obtains.This imaging engine will increase the reliability and the multifunctionality of this optical read ink recorder.
Preferably, by having high resolving power photon detector array or imageing sensor, make the imaging engine optimization so that high-definition picture to be provided.As known in the art, can be imaging engine aiming and/or light fixture are provided.
According to the present invention, it is capable of being combined or add in the equipment except the optical read ink recorder, such as PDA(Personal Digital Assistant) and other mobile computing device, digital camera, pager, visual telephone and mobile phone to have the imaging engine of specific standard feature interface.Therefore, above-mentioned with other the embodiment of the invention will reference will be made to the accompanying drawings hereinafter.
Description of drawings
It is of the present invention that each embodiment will reference will be made to the accompanying drawings in the back, wherein:
Fig. 1 is the skeleton view that has the optical read ink recorder system of optical read ink recorder according to an embodiment of the invention, and this optical read ink recorder is equipped with an imaging engine, and this imaging engine has a kind of interface of specific standard feature;
Fig. 2 is the block diagram of optical read ink recorder shown in Figure 1;
Fig. 3 is the block diagram of imaging engine shown in Figure 1;
Fig. 4 is the exemplary configuration form that the pin of the digital signal processor of imaging engine connects;
Fig. 5 is pixel arrangement Figure 50 0 of the photosensor array of imaging engine shown in Figure 3;
Fig. 6 is the arrangement of time figure of the initiating sequence of the digital signal processor in the imaging engine shown in Figure 3.
Fig. 7 is the analog gain figure that is reached in response to digital gain control according to the present invention, and wherein digital gain control is that the digital signal processor that passes through is imported;
Fig. 8 is the skeleton view according to an assembling imager of the present invention;
Fig. 9 is the decomposition diagram according to an imager of the present invention;
Figure 10 is the design skeleton view according to the arm that pivots of the present invention; And
Figure 11 is the decomposition diagram according to an imaging len assembly of the present invention.
Embodiment
Provide in detail with reference to the accompanying drawings now, wherein identical similar the or components identical of labelled notation in all views.
Fig. 1 illustrates the optical read ink recorder system 10 that comprises the optical read ink recorder 12 with imaging engine 14, and wherein optical read ink recorder 12 preferably is connected to host terminal 16 by cable 18.Fig. 2 illustrates the block diagram of optical read ink recorder 12, and wherein imaging engine 14 and platform 20 link to each other by interface.Transmission assembly 21 comprises at least one connector 22 and/or at least one transmission adaptive device 26, and wherein in order to provide electric and/or data communication between imaging engine 14 and platform 20, device 26 has separately or the electric and/or data transmission circuit that merges.
Be used between imaging engine 14 and platform 20, providing the interface module 28 of data and/or electric communication to comprise: the I/O of imaging engine 14 (I/O) device 30, such as the I/O port, be configured for and platform 20 at least one signal of exchange, comprise the direct and indirect exchange of at least one signal; The I/O device 32 of platform 20 such as the I/O port, is configured for and imaging engine 14 at least one signal of exchange, comprises the direct and indirect exchange of at least one signal; And be connected transmission assembly 21 between imaging engine 14 and the platform 20 directly or indirectly, be used between imaging engine 14 and platform 20, sending at least one signal.
This at least one signal preferably includes: the corresponding a plurality of picture element signals of image that detected with imaging engine 14; Be used to control at least one focus control signal of the focusing distance of imaging engine 14; Be used to be exchanged into the reference signal of picture reference information; Synchronizing signal; Power supply signal; And ground signalling.In preferred embodiment, this at least one signal comprises the combination of following several signals: at least one illumination control signal is used to control the illumination that is produced by imaging engine; At least one aiming symbol is used to control the aiming of being undertaken by imaging engine; At least one the programmable register signal that exchanges mutually with programmable register in the data signal processor of imaging engine; At least one chip select signal; And at least one frame shift signal.
In another embodiment, transmission assembly 21 comprises also and is used to tackle the interception circuit that this at least one signal arrives the destination that wherein said destination is selected from the combination that comprises imaging engine and circuit unit.
The view data that imaging engine 14 is produced is handled by code reader 12 (following also can describe) and/or host terminal 16.Host terminal 16 comprises or uses at least one processor, and wherein said at least one processor can link to each other with one or more outer if computing equipments, such as video monitor and/or network.Expection code reader 12 can be used as the separate equipment operation, need not link to each other with host terminal 16 or other processor.
Shown in Fig. 3 was detailed, imaging engine 14 preferably also comprised lens subassembly 302, the photosensor array 304 that image charge coupling and device (CCD) are such, and data signal processor (DSP) 306.In preferred embodiment, imaging engine 14 also comprises sighting system 308 and/or illuminator 310.In addition, in preferred embodiment, lens subassembly 302 comprises that at least one is used for incident ray is focused on lens 312 on the photon sensor array 304, and wherein the placement of lens subassembly 302 is adjustable, to be used for regulating the focal length of lens subassembly 302.In the example shown, lens subassembly 302 is installed on the lens directs assembly 314, and has lens adjustment mechanism 316, this mechanism has the motor 318 that focus control unit 319 is responded, and is used for along at least one lens of lens directs assembly 314 mobile lens assemblies 302 to change the focal length of lens subassembly 302.Therefore, imaging engine 14 has the ability to the expansion working range or focuses on better picture to change focal position, and such ability can be applicable to the user and need read in the situation of high-density bar code and/or shooting digital photograph.
DSP306 comprises the data signal processor such as DSP, and this DSP comprises multi-chip module (MCM) and the required timing pulse generator 334 of driven CCD with at least one charge pump 332.Preferably also comprise relevant complex sample device (not shown) and A/D converter (not shown) in the MCM, wherein A/D converter be used for the output of the aanalogvoltage of CCD convert to one of a plurality of gray scales of expression many bits (such as, 8 bits) quantizing pixel, preferably 256 or more gray scales.
The platform 20 that can be included within optical read ink recorder 12 or the host terminal 16 comprises a microprocessor and can also comprise the adhesive logic circuit, such as the special IC (ASIC) of customization, this for microprocessor with very necessary for transmission assembly 21 is connected.Microprocessor is commercial microprocessor preferably.In one embodiment, platform comprises the microprocessor according to the XSCALE architecture configuration, such as Intel PXA250 processor, and the special IC (ASIC) of customization.In another embodiment, platform comprises a microprocessor, and this microprocessor may not need to be used to be connected to the adhesive logic circuit of transmission assembly 21, such as Motorola MX-1 processor.
The preferably commercial electric connector of this at least one connector 22, be used to make transferring electric power and/or data communication two equipment phase couplings and.This at least one connector 22 can be extended, and such as the cable that comprises as the flat flexible cable, is used to connect two equipment of apart from each other each other.In an example shown, this at least one connector 22 comprises 31 positions of being made by molex inc, 0.3 millimeter wire connector.Expect that this at least one connector 22 is the connectors that are used for the transmission of the non-electricity as the light transmission.
This at least one transmission adapting appts 26 is the equipment as the adapter, is used to regulate electric and/or data transmission.This at least one transmission adapting appts 26 can be regulated transmission such as the transmission of the one or more signals by revising this at least one signal, comprise revise above-mentioned at least one signal and/or this signal the feature in path of process.For example, this at least one transmission adapting appts 26 can be revised feature in the following way: such as by among one or more signal combination to a signal with this at least one signal, from a signal of this at least one signal, produce one or more signals, and/or change the configuration of this signal, conversion between, RF electricity, light or the like such as this signal is carried out.Again for example, at least one transmission adapting appts 26 can be revised the path in the following way: such as by a signal of this at least one signal is directed to the contact such as pin of another connector or input/output device from the contact such as pin of a connector or input/output device.Perhaps, transmission adapting appts 26 can make the path termination that this at least one signal is propagated.Expect that this at least one connector 22 and/or at least one transmission adapting appts 26 comprises wired and combination wireless data transmission device, comprise the device that is used for conversion transmission between wired and wireless data transmission pattern, such as optics, RF or the like.
The exemplary configuration that the pin of the DSP306 that provides in I/O device 30 places connects has been provided Fig. 4, and I/O device 30 is used for being connected to platform 20 by transmission assembly 21, preferably when imaging engine 14 is configured to operate with the high precision resolution model.Expection is configured to when operating in other resolution model when imaging engine 14, and the difference that can use pin to connect disposes.
The position L1 of the pin P1 of DSP306 preferably is positioned on the S1 face of imaging engine 14, and is relative with light fixture 308 and 310 with aiming respectively.The operating voltage that is provided is preferably between 3.10 volts and 3.45 volts.Listed signal should be assigned to different pins respectively among expection Fig. 4.The VCC line preferably is filtered by filtering such as LC, so that enter the digital noise minimization that comes from terminal of camera mimic channel.Best, " FRAME_SHIFT " pin is not connected, because it is used for being configured to operate with the resolution model except that high-precision discriminating rate pattern in system in the future.Yet, when using with I/O and the operation of the also connected resolution model of " FRAME_SHIFT " pin the time, preferably " FRAME_SHIFT " pin will being connected to the input of platform 20." FRAME_SHIFT " pin preferably is connected to the UV6 pin with address 216d bit 6 corresponding LC99704 DSP.
REG_RESET when it is low
*I among the pin replacement LC99704 DSP
2The C register, and therefore circuit preferably should be included in the imaging engine 14 to guarantee REG_RESET
*Pin obtains effectively to reset when starting.REG_RESET
*Pin can be connected to the open drain electrode output of platform 20, makes I
2The C register can obtain software by hardware lines and reset.Comprise among the embodiment that customizes ASIC CS at platform 20
*Pin ground connection is because work as CS
*When pin was driven to the high value, the pixel data bit became " high Z value ", and this is unwanted in the application that the ASIC that uses customization realizes.Use FOCUS_CTRL1 and FOCUS_CTRL2 pin so that multiple focusing preference pattern becomes possibility, wherein focusing on not enabling of preference pattern need carry out real time modifying at FOCUS_CTRL1 and FOCUS_CTRL2 pin place to signal during image acquisition.Therefore, preferably FOCUS_CTRL1 and FOCUS_CTRL2 pin are connected to the general I/O pin or the port of platform 20, are used for the modification selected based on the focusing of sweep test.
Fig. 5 has shown the pixel layout 500 of exemplary L C00214 CCD.Pixel region 502 is made of 680 horizontal pixels and 492 vertical pixels.A little bit smaller a little image-region 504 of the reality of collected light or valid pixel thereon, horizontal pixel 652 * vertical pixel 486, wherein optics black picture element (OPB) is and photostable pixel.During the image capturing when reading photosensor array 304, all pixels all are hunted down, unless pass through I
2C interface has disposed the image trimming feature of DSP306.
The clock that platform provided preferably has nominal frequency 47.923MHz.Platform 20 is divided this clock, produces major clock input (MCKI) and gives imaging engine 14.47.923MHz the exemplary platform clock removes four and obtains 11.981MHz, is used to produce MCKI.Exemplary LC00214 CCD need be near the clock of 24MHz with suitably operation.Therefore, the inside PLL that uses DSP306 multiply by 2 internal camera that are called as camera major clock (MCK) that obtain 23.962MHz (such as, imaging engine) clock with the MCKI of input.During the reading of pixel region, each pixel is converted into 8 bit digital values with half speed of MCK in this example.Therefore, the frequency that preferably has of pixel clock PCLK is
In preferred embodiment, the configuration camera makes every pixel line read all to be had 763 PCLK cycles, this means that the T.T. (being also referred to as horizontal cycle) of reading a line from photosensor array 304 is
(HREF/EXHT cycle), wherein HREF is meant the horizontal reference signal, and EXHT is meant outside horizontal trigger pip.In addition, in preferred embodiment, 525 line cycles are arranged in the entire frame (image), this means that the T.T. (being also referred to as vertical cycle) of reading a complete frame from photosensor array 304 is 525 * 63.69 μ s=33.43ms (VREF/EXSFT), wherein VREF is meant vertical reference signal, and EXSFT is meant that the outside of frame trigger pip begins.This has produced constant frame rate, per second
Individual frame.Platform 20 and DSP306 need suitable configuration, with the clock setting that obtains to be fit to, and best, suitable default register setting is provided, be used for guaranteeing suitably to dispose LC99704 DSP306.
Preferably, can be the power mode that imaging engine 14 is selected a plurality of power modes (power consumption), this depends on the state that decoding is used.In these power ratings each provides the compromise between time of power consumption and images acquired, and this has finally influenced the time of decoding.Five exemplary operate power patterns are:
A. by the complete powered-down of hardware switch;
B. stop the main frame collection, pass through I
2C is provided with the camera standby;
C. stop the main frame collection, the external camera synchronizing signal is suspended (EXSFT and EXHT free time);
D. stop the main frame collection, camera moves with full motion; And
E. with full motion collection and operation.
Produce the voltage the picture+/-5 volts, make electric charge can be from ccd sensor the charge pump 332 that comes out of transfer suitably, taking time reaches adjusting.When in power mode A and B, charge pump circuit (～60 milliseconds) as quickly as possible reaches adjusting (charge pump has reached adjusting in the afterpower pattern).Realize that preferably initiating sequence is to minimize this time.
In power mode A, the sequence of opening power is closed and must be experienced to the engine power supply fully, and this sequence comprises:
1. I is passed through in programming
2The camera register that C is provided with;
2. make EXSFT vacant so that the charge pump startup.
The vacant help of EXSFT makes charge pump voltage reach adjusting as quickly as possible, and it is preferably carried out by image control size sensor (ICSS) register that platform 20 suitably is set.
Fig. 6 has shown after power supply is added to imaging engine 14 or has withdrawed from the arrangement of time of the initiating sequence of the imaging engine 14 after the standby power Mode B of imaging engine.After applying power supply, write I according to designing requirement
2The C register.
According to designing requirement, carry out I when ingoing power Mode B (standby)
2The C register writes sequence.When withdrawing from power mode B (standby), preferably do not carry out I
2The full programming of C register is not because lose by entering standby power Mode B content of registers.In order to withdraw from the standby power Mode B, preferably follow following order:
1. pass through I
2The C register writes the standby power pattern that withdraws from;
2. make EXSFT vacant to start charge pump; And
3. the initialization of motor focus control.
When withdrawing from the standby power Mode B, carry out I according to designing requirement
2C register write sequence.In case withdraw from the standby power Mode B, preferably follow charge pump boot sequence shown in Figure 6.
The lens directs assembly 314 of imaging engine 14 preferably can be set at one of two different predetermined focal positions that set when making.A focal position that is called proximity focused can focus on about five inches (12.7cm) object far away imaging engine 14.Second focal position is called focusing far away, allows imaging engine 14 to focus on about nine inches (22.9cm) object far away.The superset of these two focal positions offers imaging engine 14 and reaches the remarkable working range of crossing over each bar code density range, and also provides improved distant view photograph to take ability when being set to focal position far away.Focus control unit 319 is controlled by FOCUS_CTRL1 and FOCUS_CTRL2 signal, and this signal is used to control the operation of the motor 318 that is used for placing lens subassembly 302.The control of placing lens subassembly 302 is as shown in table 1.
| FOCUS_CTRL1 | | Operation | Note | |
| 0 | 0 | | | |
| 0 | 1 | Select focal position far away | | |
| 1 | 0 | Select the proximity focused | Motor | 318 operations |
| 1 | 1 | Pattern repeatedly | |
Table 1-focus control definition
Usually in bar code decoding scan period, motor 318 will make to focus on each frame of gathering changing between nearly Jiao burnt and far away with mode operation repeatedly.In some cases, read application, may need to force one of focal position in a plurality of frames seizure such as photograph taking and concrete bar code.In case operated by order, motor 318 is used for handling lenses regulation mechanism 216 along lens directs assembly 314 at least one lens 312 to be moved to assigned address, and rest on 20 milliseconds of theres.This expression maximum exposure time approximately is that frame time deducts 20 milliseconds the residence time, causes maximum exposure to be set to 12 milliseconds.When with the operation of pattern repeatedly, for guaranteeing that be fit to and stable picture catching, software should be set the time shutter and be not more than 12 milliseconds.If it is nearer or far away forcing focal position, then, can make picture frame time time shutter big like that as long as make it be docked to the time that first image exposure begins from the time of forcing focal position to 20 milliseconds in motor.
When enabling repeatedly pattern, may need to know the focal position of the image of being caught in some cases.If in such example, when just in reading images, not direct feedback to lens subassembly 302 residing focal positions from imaging engine 14.The unique method of knowing focal position is that imaging engine 14 is initialised to a specific focal position, and is following the tracks of current focal position on the basis frame by frame then.A method that realizes this task is by using FOCUS_CTRL1 and FOCUS_CTRL2 to make focal position be forced to a specific focal position, then focus control is become pattern repeatedly, and order platform 20 enable the EXSFT signal (such as, in platform, set RUN bit (supposing to enable the ACQ bit)).At each rising edge of EXSFT, camera focus can be switched, thereby can catch first frame on the focal position opposite with initialized location.Next frame can be at initialized location place or the like.When in these frames each is hunted down, produce the interruption end of frames by platform 20, and available its this frame of focal position mark, current focal position switches to next position simultaneously, prepares to catch next frame.In using power mode A-E any the time, preferably set the initial focus position and always start from predetermined focal position to guarantee first frame.
For example can be used among scan period with power mode D operating platform 20, obtained two frames and handling them this moment, and system continues to allow camera move but does not gather, thereby it can catch more frame energetically if desired, in this power mode D, operation is enabled for imaging engine 14 comes detected image, but does not enable the collection (in platform 20, enable RUN bit (operation) and forbid ACQ bit (collection)) of image.In this case, processor can not produce the interruption end of frame, because it is not gathered.In this case, follow the tracks of the focal position state and become difficult more.If power mode D is used in suggestion, motor should be forced to initialized focal position, up to enabling collection (ACQ bit).This will guarantee that focus control is reinitialized to known reference position, and the interruption end that reuses frame is followed the tracks of the focal position state.According to designing requirement, provide and after energising, can be written into imaging engine 14 (for example, the default camera register setting of DSP306 LC99704).
The acquisition interface of platform 20 is preferably highly programmable.Need be configured to guarantee camera suitably the critical item of operation be: the setting of MCKI, with DSP306 (in the example that is provided, being 11.981MHz) fit from platform 20; The polarity of EXSFT after power supply is applied to imaging engine 14 or withdrawing from after the standby power Mode B of imaging engine, be complementary with the boot sequence of imaging engine 14; The idle condition of EXHT and EXSFT when forbidding collection/operation; The pixel count of every row and the line number of every frame and CCD fit; And direct memory access (DMA) (DMA) destination and heavily loaded address register.
Referring now to Fig. 8, show an optical read ink recorder 912 in the mode of skeleton view according to one embodiment of the invention.Optical read ink recorder 912 comprises imaging optical device 914, printed circuit-board assembly 916, light fixture 918, sight device 920 and motor sub-assembly 922.The view data that imaging optical device 914 produces by printed circuit-board assembly 916 received and handled.The main body that light fixture 918 and sight device 920 help assurance imaging optical device 914 to have high-quality is therefrom obtained view data.Motor sub-assembly 922 representatives are used to focus on the device of target image, can further discuss herein.It is interior or thereon attached that the assembly of optical read ink recorder is placed on chassis 910.Chassis 910 preferably is made of zinc.
Lighting source can produce the light beam of the relative broad of low output intensity, to throw light on from the nearer relatively target bar of image optics code reader, also can produce the light beam of the relative narrower of higher output intensity, to throw light on from the relative target bar far away of image optics code reader.Be used to produce a part of hanging down the lighting source of output intensity illuminating bundle, can comprise the one or more light-emitting components with wide divergent mode, these elements are positioned at from the nearer relatively place of the primary optical axis of lens subassembly.Can use other element so that the longer scope illuminating bundle of higher output intensity to be provided.In preferred embodiment, this function is to be carried out by the light-emitting component with narrow divergent mode, and these elements are positioned at the relative place far away of primary optical axis from lens subassembly.These elements of mentioning later can be a plurality of light emitting diodes, and each all is associated with the focusing lenslet that is positioned at the imaging engine front surface.
In the illuminator of using a plurality of light-emitting components, pass through the field of illumination some Strength Changes can take place.In preferred embodiment of the present invention, the known variant in the illumination that image processing circuit and/or software are provided the signal compensation lighting source from imageing sensor.
With reference to Fig. 3 as mentioned above, the lens subassembly of imaging engine preferably can be set to one of two different predetermined focal positions.These positions are fixed when making usually.A focal position that is called nearly Jiao can focus on for example about five inches (12.7 centimetres) object far away imaging engine.Second focal position that is called Jiao far away can focus on for example about nine inches (22.9 centimetres) object far away imaging engine.The superset of these two focal positions or crossover can reach imaging engine to cross over the working range of the brilliance of a plurality of bar code density, and also provide improved distant view photograph shooting ability when being set to burnt position far away.
The exemplary device that is used to regulate focal position in the optical read ink recorder of prior art comprises along optical axis mobile imaging optical devices.According to one embodiment of the invention, regulate focal position by rotation tomography optical devices on pivot, be described with reference to Fig. 8-10.
With reference to Fig. 9, show the exploded view of optical read ink recorder 912 shown in Figure 8.Therefore, Fig. 9 shows the exploded view of imaging optical device 914, PCB assembly 916, sight device 920 and motor sub-assembly 922.
Provide screw 930 so that PCB assembly 916 is fastened on the chassis 910.The removing of screw 930 can be from the chassis 910 removes PCB assembly 916.In case pull down PCB assembly 916, just can enter the cavity 935 that is used to place motor sub-assembly 922 on the chassis 910.Motor sub-assembly 922 comprises magnet 932, rotary optical machinery tubbiness assembly 934, coil block 936, banking pin 938 and pivot latch pin 940.
Be preferably in and determine imaging engine and will be come CD-ROM drive motor assembly 922 after the distance between the object of imaging.In the patent No. of authorizing Symbol Technologies company is in the United States Patent (USP) of 6340114B1, has disclosed a kind of distance that is used for the distance between definite imaging device of the present invention and the object and has determined method.This method comprises that the sight device that uses the image optics code reader measures the distance of target image.Other distance determines that method also can be used for determining imaging device and will be by the distance between the object of imaging, is the method that is disclosed in 10/425499 the U.S. Patent application such as, the application number of submitting on April 29th, 2003 that awaits the reply equally.
Then, set a distance and imaging optical device 914 are interrelated with respect to concrete or about position of permanent datum (such as, the specified point of the imaging optical device that inconocenter point is such) really to make this object by disposal system (such as, PCB assembly 916).
Then, disposal system determine imaging optical device with respect to permanent datum move to specific or about position required apart from quantity.For carrying out this calculating, disposal system has been considered the last memory location of the reference point of imaging optical device 914 with respect to permanent datum.When not considering that once in a while when the current location that is in the imaging optical device of known position for permanent datum manually or automatically being set calibrating needing of imaging engine, a last memory location of the reference point of imaging optical device 914 just equals the current location of the reference point of imaging optical device 914 with respect to permanent datum.
Determine last one " record " or current position by continuing to calculate imaging optical device 914 reference point with respect to the distance measurements that permanent datum moves by disposal system.For example, after the initial manufacturing setting of imaging device or calibration, the reference point of imaging optical device 914 is positioned on the same plane at permanent datum place, and the distance that perhaps arrives permanent datum is known, such as from permanent datum position farthest.
After this, can be implemented in focus variations between nearly Jiao burnt and far away of bar code decoding scan period according to following description.As mentioned above, determine focusing quality according to PCB assembly 916 handled information at first.According to the present invention, then, will send to the coil block 936 that next-door neighbour's magnet 932 is placed from the signal of PCB assembly 916.Coil block 936 is applied to electromagnetic force on the magnet 932.Because the effect of the size and Orientation of the electromagnetic force that coil block 936 is applied, magnet 932 moves.Because magnet 932 is connected to the optical-mechanical tubbiness assembly 934 of rotation physically, be applied to the optical-mechanical tubbiness assembly 934 that variation in the electromagnetic force on the magnet 932 is sent to rotation by coil block 936.Imaging optical device 914 is placed within the rotary optical machinery tubbiness assembly 934.Therefore, the position adjustments to the optical-mechanical tubbiness assembly 934 of rotation has direct influence to the position of imaging optical device 914.The mobile physical restriction of forcing that provides a braking member 938 can do to the optical-mechanical tubbiness assembly 934 of rotation.
As mentioned above, the conventional means that is used to regulate the focusing of imaging optical device comprises along light path and moves axially imaging optical device.According to the present invention,, realize adjusting to the focusing of imaging optical device by rotation on pivot or around the turning axle rotary optical machinery tubbiness assembly 934 that pivot latch pin 940 is limited.Pivot latch pin 940 is placed in the jack 942 in rotatable mode, and this jack then is fixed within the part of optical-mechanical tubbiness assembly 934.
Figure 10 shows the independent skeleton view of the electromagnetic motor assembly 922 that is assembled.By a rubbing device pivot latch pin 940 is maintained within the jack 942 so that motor is minimized the susceptibility that moves, this moves owing to thermal effect, gravity, dust and maybe can make motor shift out any other factors of desired locations.One bearing is installed within jack 942, is stopped for the accurate rotation of the little increment of pivot latch pin 940 provides smoothly.Sensor 944 is being close to imaging optical device 914 and is placing.
Imaging optical device 914 is configured to optical information is focused on the sensor 944.Sensor 944 produces the corresponding electronic signal of Pixel Information array with target image.Electronic signal from sensor 944 is sent to control and logical circuit, such as PCB assembly 916.Control and logical circuit are handled this signal, and the output signal of the focusing of relevant target image is provided to brake assemblies.Submit to and be that what describe in further detail in 10/389,184 the United States Patent (USP) is a kind ofly to be used for determining that whether target image is in focusing and corresponding output signal should be and so on method with the application number that awaits the reply on March 14th, 2003.
The architectural feature of rotary optical machinery tubbiness assembly 934 is introduced once Nominal angle error to system, as the result of the adjusting of carry out desired, promptly is preferably in the linear regulation of 85+ in 20 milliseconds/-10 micron.Can realize desired adjusting by once rotating of optical-mechanical tubbiness assembly 934.By error being assigned between two focal positions, realize and allow less than 0.5 the degree nominal error.The realization of so low error numeral is owing to the linear movement that causes the desired minute quantity of required focus adjustment.In an application of the invention, the statistical error of about two (2) degree is regarded the outer boundary of acceptable optical quality as.
Referring now to Figure 11, according to one embodiment of the invention, it shows the exploded view of imaging optical device 914.Imaging optical device 914 comprises one group of lens 950,954 and 960, aperture plate 952, lens mount 956 and set collar 958.The assembly of imaging optical device 914 is assembled within the lens mount 956 successively.The order that assembly is laid is: at first, lens 950 are placed in the lens mount 956, lean against the annular shoulder that constitutes on lens mount 956 inside surfaces.Secondly, lens 954 and aperture 952 insert lens mount 956 and adjacent with first lens 950.The 3rd lens 960 insert lens mount 956 and adjacent with aperture 952.At last, set collar 958 inserts lens mounts 956 and is fixed by being threaded on the inner ring of the outer ring of set collar 958 and lens mount 956.Then, the imaging len assembly of being assembled 914 stands known performance of various persons skilled in the art and structured testing.Expection can be fastened on each assembly within the lens mount 956 by other known means of persons skilled in the art, such as by connecting airtight by the formula of pressing.
Embodiment described in the invention is intended to explanation and unrestricted, and does not represent each embodiment of the present invention.Illustrated the spirit and scope of the present invention in claims below and the scheme that is considered as legally being equal to, can make various modifications and variations and do not deviate from the spirit and scope of the present invention.
Claims (54)
1. an optical read ink recorder is characterized in that, comprising:
The chassis;
Be installed in image optics assembly on the described chassis with the pivot rotation mode; And
Be used for described image optics assembly is focused on device on the target image, wherein regulate described focusing by described image optics assembly is rotated around pivot.
2. optical read ink recorder as claimed in claim 1 is characterized in that, also comprises the light fixture of the described target image that is used to throw light on.
3. optical read ink recorder as claimed in claim 1 is characterized in that, also comprises being used to help the user to make described optical read ink recorder aim at the sight device of described target image.
4. optical read ink recorder as claimed in claim 3 is characterized in that, described sight device comprises visible laser diode and diffraction optical element lens subassembly.
5. optical read ink recorder as claimed in claim 1 is characterized in that, also comprises the printed circuit-board assembly of the transmitted in both directions of at least one signal that is used for a plurality of input signals and a plurality of output signals.
6. optical read ink recorder as claimed in claim 1 is characterized in that, also comprises being used to make described image optics assembly to focus on the motor sub-assembly of described target image.
7. optical read ink recorder as claimed in claim 6 is characterized in that, described motor sub-assembly comprises: be used for electromagnetic force is applied to magnet, coil block on the described magnet; Be used to place the optical-mechanical tubbiness assembly of described image optics assembly; And the pivot latch pin that is used for described optical-mechanical tubbiness assembly is rotatably coupled to described chassis.
8. optical read ink recorder as claimed in claim 7, it is characterized in that, send at least one power supply signal to described coil block, make described coil block that electromagnetic force is applied on the described magnet, wherein said magnet is connected to described optical-mechanical tubbiness assembly, and described optical-mechanical tubbiness assembly is rotated to regulate the focusing of described optical read ink recorder around described pivot latch pin.
9. optical read ink recorder as claimed in claim 1 is characterized in that, described image optics assembly comprises lens mount; Be placed on first lens in the described lens mount, it and the annular shoulder that on described lens mount inside surface, constitutes; Be placed in second lens and aperture in the described lens mount, it is adjacent that they are being close to described first lens; Be placed on the 3rd lens in the described lens mount; And be used for described first, second and the 3rd lens and aperture are fixed on retaining element within the described lens mount.
10. optical read ink recorder as claimed in claim 1 is characterized in that described chassis is made by zinc.
11. optical read ink recorder as claimed in claim 1 is characterized in that, described image optics assembly approximately once rotates around pivot.
12. optical read ink recorder as claimed in claim 11 is characterized in that, the described rotation around pivot once caused approximating greatly 85 microns linear regulation approximately.
13. optical read ink recorder as claimed in claim 12 is characterized in that, described being adjusted in 20 milliseconds finished.
14. a method of focusing that is used to be adjusted to the picture optical module is characterized in that described method comprises the steps:
A kind of image optics assembly that is installed on the chassis that rotates around pivot is provided; And
The described image optics assembly of rotation is to focus on target image with described image optics assembly on pivot.
15. method as claimed in claim 14 is characterized in that, also comprises the step of the described target image that throws light on.
16. method as claimed in claim 14 is characterized in that, also comprises the step that described image optics assembly is targeted to described target image.
17. method as claimed in claim 14 is characterized in that, described sight device comprises visible laser diode and diffraction optical element lens subassembly.
18. an optical read ink recorder comprises:
The chassis;
Be used to be placed to the optical-mechanical tubbiness assembly of picture optical module, wherein rotatably described optical-mechanical tubbiness assembly is installed on the described chassis, thereby the focusing of described image optics assembly on target image is regulated in the motion that described optical-mechanical tubbiness assembly rotates around pivot around pivot.
19. optical read ink recorder as claimed in claim 18 is characterized in that, comprises that also the pivoting movement that is used to make described image optics assembly regulates the electromagnetic motor assembly of the focusing on the described target image.
20. optical read ink recorder as claimed in claim 19, it is characterized in that, described electromagnetic motor assembly comprises the magnet that is installed on the described optical-mechanical tubbiness assembly, be used for electromagnetic force is applied to coil block on the described magnet, and be used for rotatably described optical-mechanical tubbiness assembly being installed in pivot latch pin on the described chassis around pivot.
21. an interface module that is used for the imaging engine that is placed within the optical read ink recorder in removable mode and have an adjustable lens subassembly is connected to the circuit unit of optical read ink recorder system, described interface module comprises:
The first coupled circuit assembly, be used for sending at least one input signal at the first direction from the circuit unit to the imaging engine, described at least one input signal comprises at least one focus control signal, is used for controlling described lens subassembly to select a focal position of at least two focal positions; And
The second coupled circuit assembly, be used for sending at least one output signal in the second direction from the imaging engine to the circuit unit, described at least one output signal comprises at least one pixel data signal, and wherein said at least one pixel data signal is represented the light that the photon sensor array by described imaging engine is detected.
22. interface module as claimed in claim 21, it is characterized in that, described at least one input signal also comprises at least one signal that is selected from following combination: be used to control at least one aiming component control signal of the aiming assembly of described imaging engine, and at least one illumination control signal that is used to control the light fixture of described imaging engine.
23. interface module as claimed in claim 21 is characterized in that, also comprises the 3rd coupled circuit assembly, is used for the transmission of at least one power on/off signal from described circuit unit to described imaging engine.
24. interface module as claimed in claim 21 is characterized in that, also comprises the 3rd coupled circuit assembly, is used for the transmitted in both directions of at least one signal between described circuit unit and described imaging engine of described at least one signal.
25. interface module as claimed in claim 21, it is characterized in that, described at least one input signal also comprises a signal that is selected from following combination: at least one register data signal is used for programming data at least one register at the data signal processor of described imaging engine; At least one register reset signal is used for described at least one register is reset; And at least one chip select signal, be used for selecting a chip of at least one chip of described data signal processor.
26. interface module as claimed in claim 21, it is characterized in that, described at least one input signal also comprises at least one synchronizing signal, it is selected from following combination: at least one external frame signal, at least one outside horizontal clock signal, at least one register clock signal and at least one master clock signal.
27. interface module as claimed in claim 21 is characterized in that, described at least one output signal is selected from following combination: at least one pixel clock signal; At least one horizontal pixel efficient clock synchronizing signal; At least one vertical frame efficient clock signal; At least one register data signal; At least one register reset signal; And at least one frame movable signal.
28. interface module as claimed in claim 23 is characterized in that, described at least one power on/off signal is selected from following combination: at least one ground signalling; At least one focus control motor power signal is used for providing power supply to motor, and described motor can be regulated described lens subassembly to change its focal position; At least one mains lighting supply signal is used for providing power supply to the light fixture of described imaging engine; And at least one aiming power supply signal, be used for providing power supply to the aiming assembly of described imaging engine.
29. interface module as claimed in claim 21, it is characterized in that the described first and second coupled circuit assemblies are included among following at least one: the I/O device of the I/O of described imaging engine (I/O) device, described circuit unit and be connected described imaging engine and described circuit unit between transmission assembly.
30. interface module as claimed in claim 29, it is characterized in that, described transmission assembly comprises: at least one connector, being used to provides one of at least the path in electrical communications and the data communication, and at least one transmission adapting appts, be used for revising the path of described at least one signal and attribute one of at least.
31. interface module as claimed in claim 21 is characterized in that, the described first and second coupled circuit assemblies are directly connected at least one in described imaging engine and the described circuit unit.
32. interface module as claimed in claim 23, it is characterized in that, described first, second of combining comprises the connector with at least the first and second ends with the 3rd coupled circuit assembly, and one of described first and second end faces comprise a plurality of contacts of 31 contacts from first contact to the.
33. interface module as claimed in claim 32 is characterized in that, is 0.3 millimeter from the spacing of 31 contacts, described first contact to the.
34. one kind is used for being connected to the method for the circuit unit of optical read ink recorder system be placed on imaging engine within the optical read ink recorder in removable mode, described method comprises the steps:
Send at least one focus control signal the first direction from described circuit unit to described imaging engine, the lens subassembly that described signal is used for controlling described imaging engine is selected a focal position of at least two focal positions; And
Second direction, send at least one pixel data signal, the light that described signal indication is detected by the photon sensor array of described imaging engine from described imaging engine to described circuit unit.
35. method as claimed in claim 34, it is characterized in that, also be included in the step that sends at least one signal in the described first direction, wherein said signal is selected from following combination: at least one aims at component control signal, is used to control the aiming assembly of described imaging engine; And at least one illumination control signal, be used to control the light fixture of described imaging engine.
36. method as claimed in claim 34 is characterized in that, also is included in the step that sends at least one power on/off signal in the described first direction, wherein said signal is selected from following combination: at least one ground signalling; The power supply signal of at least one focus control motor is used for providing power supply to change its focal position to the motor that can regulate described lens subassembly; At least one mains lighting supply signal is used for providing power supply to the light fixture of described optical read ink recorder system; And at least one aiming power supply signal, be used for providing power supply to the aiming assembly of described optical read ink recorder system.
37. method as claimed in claim 34, it is characterized in that, also be included in the step that sends at least one signal in the described first direction, wherein said signal is selected from following combination: at least one register data signal is used for programming data at least one register at the data signal processor of described imaging engine; At least one register reset signal, described at least one register is used to reset; And at least one chip select signal, be used to select at least one chip of described data signal processor.
38. method as claimed in claim 34 is characterized in that, also is included in the step that sends at least one synchronizing signal in the described first direction, wherein said signal is selected from following combination: at least one external frame signal; At least one outside horizontal clock signal; At least one register clock signal; And at least one master clock signal.
39. method as claimed in claim 34 is characterized in that, also is included in the step that sends at least one signal in the described second direction, wherein said signal is selected from following combination: at least one pixel clock signal; At least one horizontal pixel efficient clock synchronizing signal; At least one vertical frame efficient clock signal; At least one register data signal; At least one register reset signal; And at least one frame movable signal.
40. an imaging engine that is used for having adjustable lens subassembly is connected to the interface module of the circuit unit of optical read ink recorder system, it is characterized in that described interface module comprises:
Coupled circuit, it comprises:
First coupled circuit is used for sending at least one outside vertically frame clock signal at the first direction from described circuit unit to described imaging engine;
Second coupled circuit is used for sending at least one horizontal pixel efficient clock signal in the second direction from described imaging engine to described circuit unit;
The 3rd coupled circuit is used for sending at least one master clock signal at described first direction;
The 4th coupled circuit is used for the pixel data at a plurality of bits of described second direction transmission, and wherein said data representation is by the light that photosensor array detected of described imaging engine; And
The 5th coupled circuit is used for sending at least one focus control signal at described first direction, and wherein said signal is used to control described lens subassembly and selects described focal position.
41. interface module as claimed in claim 40 is characterized in that, described coupled circuit also comprises:
The 6th coupled circuit is used for sending at least one focus control motor power signal at described first direction, and wherein said signal is used for providing power supply to the motor of the lens subassembly that can regulate described imaging engine, to change the focal position of described imaging engine;
The 7th coupled circuit is used for sending at least one ground signalling at the first direction from described circuit unit to described imaging engine;
The 8th coupled circuit is used for sending at least one illumination at first direction and enables signal, and wherein said signal is used to control the light fixture of described imaging engine;
The 9th coupled circuit is used for sending at least one aiming at described first direction and enables signal, and wherein said signal is used to control the aiming assembly of described imaging engine;
The tenth coupled circuit is used for sending at least one mains lighting supply signal at described first direction, and wherein said signal is used for providing power supply to described light fixture; And
The 11 coupled circuit is used for sending at least one aiming power supply signal at described first direction, and wherein said signal is used for providing power supply to the aiming assembly of described optical read ink recorder system.
42. interface module as claimed in claim 41 is characterized in that, described coupled circuit also comprises:
The 12 coupled circuit is used for sending at least one pixel clock signal in described second direction;
The 13 coupled circuit is used for sending at least one outside horizontal clock signal in described second direction;
The 14 coupled circuit is used for sending at least one I at least one direction of described first and second directions
2C register data signal;
The 15 coupled circuit is used for sending at least one I at described first direction
2C register clock signal;
The 16 coupled circuit, at least one that is used in described first and second directions sends at least one register reset signal, wherein said signal be used to reset at least one register of data signal processor of described imaging engine;
The 17 coupled circuit is used for sending at least one chip select signal at described first direction;
The 18 coupled circuit is used for sending at least one exposure back frame shift signal in described second direction; And
The 19 coupled circuit is used for sending at least one external frame synchronizing signal at described first direction.
43. interface module as claimed in claim 42, it is characterized in that, described interface module also comprises the connector that has first and second end faces at least, one of described first and second end faces comprise a plurality of contacts of 31 contacts from first contact to the, wherein said first coupled circuit comprises a contact in described a plurality of contact, described second coupled circuit comprises a contact in described a plurality of contact, described the 3rd coupled circuit comprises a contact in described a plurality of contact, described the 4th coupled circuit comprises eight contacts in described a plurality of contact, described the 5th coupled circuit comprises two contacts in described a plurality of contact, described the 6th coupled circuit comprises a contact in described a plurality of contact, described the 7th coupled circuit comprises four contacts in described a plurality of contact, described the 8th coupled circuit comprises a contact in described a plurality of contact, described the 9th coupled circuit comprises a contact in described a plurality of contact, described the tenth coupled circuit comprises a contact in described a plurality of contact, described the 11 coupled circuit comprises two contacts in described a plurality of contact, described the 12 coupled circuit comprises a contact in described a plurality of contact, described the 13 coupled circuit comprises a contact in described a plurality of contact, described the 14 coupled circuit comprises a contact in described a plurality of contact, described the 15 coupled circuit comprises a contact in described a plurality of contact, described the 16 coupled circuit comprises a contact in described a plurality of contact, described the 17 coupled circuit comprises a contact in described a plurality of contact, described the 18 coupled circuit comprises a contact in described a plurality of contact, and described the 19 coupled circuit comprises a contact in described a plurality of contact, and each in the included contact of wherein said the first to the 19 coupled circuit all is different.
44. interface module as claimed in claim 40 is characterized in that, described coupled circuit be directly connected in described imaging engine and the described circuit unit one of at least.
45. interface module as claimed in claim 40, it is characterized in that, described coupled circuit also comprises the interception circuit, is used for tackling a signal arrival destination of described at least one signal, and wherein said destination is selected from the combination of described imaging engine and described circuit unit.
46. an imaging engine that is used for having adjustable lens subassembly is connected to the interface module of the circuit unit of optical read ink recorder system, it is characterized in that described interface module comprises:
At least the connector that has first and second end faces, one of described first and second end faces comprise a plurality of contacts from the first to the 31 contact that are used to send at least one signal;
First coupled circuit, be used for sending at least one focus control signal that is used to control described lens subassembly at first direction from described circuit unit to described imaging engine, described lens subassembly is used for selecting a focal position of at least two focal positions of described lens subassembly, and described first coupled circuit comprises four contacts in described a plurality of contact;
Second coupled circuit, be used at least one below described first direction sends: at least one is used to control the illumination of the light fixture of described optical read ink recorder system and enables signal, and at least one aiming that is used to control the aiming assembly of described optical read ink recorder system enables signal, and described second coupled circuit comprises at least two contacts in described a plurality of contact; And
The 3rd coupled circuit, be used for sending the pixel data of a plurality of bits in second direction from described imaging engine to described circuit unit, wherein said data representation is by the light that photosensor array detected of described imaging engine, and described the 3rd coupled circuit comprises eight in described a plurality of contact;
Wherein from described first to described the 3rd coupled circuit each included contact all be different.
47. interface module as claimed in claim 46 is characterized in that, one of at least directly the linking to each other with in the described circuit unit at least one with described imaging engine of described first, second and the 3rd coupled circuit.
48. an imaging engine that is used for having adjustable lens subassembly is connected to the interface module of the circuit unit of optical read ink recorder system, it is characterized in that described interface module comprises:
The I/O device of the I/O of described imaging engine (I/O) device, described circuit unit and be connected described imaging engine and described circuit unit between transmission assembly at least one, be configured at least one signal from one of described imaging engine and described circuit unit sent to the opposing party in described imaging engine and the described circuit unit;
Wherein said at least one signal comprises: at least one pixel data signal, and its expression is by the light that photosensor array detected of described imaging engine; At least one clock signal is used for the synchronous of described imaging engine and circuit unit; At least one reference signal comprises at least one vertical frame reference siganl and at least one horizontal pixel reference signal; And at least one focus control signal, be used to control the adjusting of described lens subassembly; And at least one ground signalling.
49. interface module as claimed in claim 48 is characterized in that, described transmission assembly comprises following at least one: at least one connector, and it provides the path in electrical communications and the data communication at least one; And at least one transmission adapting appts, be used for revising the path of described at least one signal and at least one of attribute.
50. interface module as claimed in claim 48 is characterized in that, described at least one signal also comprises at least one signal that is selected from following combination: at least one mains lighting supply signal is used for providing power supply to the light fixture of described imaging engine; At least one aims at power supply signal, and being used for provides power supply to the aiming assembly of described imaging engine; At least one illumination control signal is used to control described light fixture; At least one aims at control signal, is used to control described aiming assembly.
51. interface module as claimed in claim 48, it is characterized in that, described transmission assembly comprises the interception circuit, is used for tackling a signal arrival destination of described at least one signal, and wherein said destination is selected from the combination of described imaging engine and described circuit unit.
52. interface module as claimed in claim 49 is characterized in that, described transmission assembly comprises the connector with 31 contacts.
53. interface module as claimed in claim 50 is characterized in that, described 31 contacts have 0.3 millimeter spacing.
54. interface module as claimed in claim 48 is characterized in that, also comprise the wired transmission device that is used for sending described at least one signal and radio transmitting device one of at least.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US44709303P | 2003-02-13 | 2003-02-13 | |
| US60/447,093 | 2003-02-13 | ||
| US60/460,370 | 2003-04-04 | ||
| US10/459,935 | 2003-06-12 | ||
| US10/694,425 | 2003-10-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1788270A true CN1788270A (en) | 2006-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200480007410.3A Pending CN1788270A (en) | 2003-02-13 | 2004-02-04 | Optical code reader with autofocus and interface unit |
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| Country | Link |
|---|---|
| CN (1) | CN1788270A (en) |
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| CN101877048A (en) * | 2009-04-29 | 2010-11-03 | 手持产品公司 | Laser scanner with deformable lens |
| CN102547108A (en) * | 2010-10-19 | 2012-07-04 | 手持产品公司 | Autofocusing optical imaging device |
| WO2013159318A1 (en) * | 2012-04-27 | 2013-10-31 | Honeywell International Inc. | Method of improving decoding speed on off-the-shelf camera phone |
| CN106131415A (en) * | 2016-07-19 | 2016-11-16 | 广东欧珀移动通信有限公司 | Image in 2 D code scan method, device and mobile terminal |
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| CN107301359A (en) * | 2016-04-15 | 2017-10-27 | 手持产品公司 | The forming bar code reader of sight and luminaire with color separated |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877048A (en) * | 2009-04-29 | 2010-11-03 | 手持产品公司 | Laser scanner with deformable lens |
| CN102547108A (en) * | 2010-10-19 | 2012-07-04 | 手持产品公司 | Autofocusing optical imaging device |
| WO2013159318A1 (en) * | 2012-04-27 | 2013-10-31 | Honeywell International Inc. | Method of improving decoding speed on off-the-shelf camera phone |
| CN107301359A (en) * | 2016-04-15 | 2017-10-27 | 手持产品公司 | The forming bar code reader of sight and luminaire with color separated |
| CN107301359B (en) * | 2016-04-15 | 2023-02-21 | 手持产品公司 | Imaging barcode reader with color separated sight and illuminator |
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