Abstract: An optical module with a cooling system provides enhanced heat removal using one or more passive cooling devices. Such passive cooling devices include a protrusion through the housing of the optical module that thermally couples a heat-generating component in the optical module to a heat-sink module; a PGS material configured to form wetted contact with adjacent surfaces and therefore provide greater thermal conductivity; and one or more heat pipes configured to thermally couple a heat-generating component in the optical module to a remote heat-sink.

Abstract: An optical fiber has a plurality of holes in a cladding around a core, and has a high failure strength and small transmission loss. The core is made of glass. The cladding surrounds the core, and the holes are formed in the cladding so as to extend along a central axis of the fiber. The holes are formed with constant intervals therebetween along a circle centered on the core, and each hole has a substantially circular cross section. The cladding is sectioned into two claddings. A residual stress in an inner region that is inside a circumcircle of the holes is a compressive stress.

Abstract: A light source is coupled to an input facet that directs light from the light source to a core layer of a waveguide and a gradient index material layer disposed beside the core layer along a portion of a propagation length of the waveguide. Light is launched from the light source into the input facet. In response, the gradient index material layer directs light to the core layer at least along the portion of the propagation length.

Abstract: An apparatus includes a light source configured to provide radiation at a wavelength and a conduit configured to direct radiation at a wavelength from the light source to a target location of a patient. The conduit includes a first optical waveguide extending along a waveguide axis, the first optical waveguide being a flexible waveguide having a hollow core, the first optical waveguide being configured to guide the radiation at through the core along the waveguide axis; and a second optical waveguide extending along the waveguide axis, the second optical waveguide having a hollow core and being coupled to the first optical waveguide to receive the radiation from the first optical waveguide and to deliver the radiation to the target location. The first optical waveguide is a photonic crystal fiber and the second optical waveguide is not a photonic crystal fiber waveguide.

Abstract: A method of manufacturing an optical fiber includes a first step of drawing an optical fiber preform into a glass fiber and disposing a fiber coating on the outer circumference of the glass fiber to form a parent optical fiber; a second step of cutting the parent optical fiber into a plurality of individual optical fibers; a third step of determining, at, at least, one spot of the parent optical fiber, a failure strength F1 and a failure time T; a fourth step of determining a failure strength F2 of each of the individual optical fibers; and a fifth step of selecting an optical fiber having a failure strength F2 of 5.5 kgf or more from the individual optical fibers cut from the parent optical fiber whose failure strength F1 and failure time T satisfy the inequality T>2.6×10?11×exp(4.736×F1).

Abstract: An optical fiber adapter includes a main body, an elastic shutter member and a pair of inner housings. The main body has an accommodation room. The shutter member includes a fixed portion, a shutter plate, a connecting portion, an extending portion and a bent portion. The fixed portion is positioned in the accommodation room. The connecting portion connects the fixed portion with the shutter plate. The shutter plate is positioned within the accommodation room. The extending portion extends from the fixed portion and is connected with the bent portion. The bent portion is attached to a protrusion on a wall of the accommodation room. The inner housings are positioned within the accommodation room and each include a hollow cylinder extending from a flange. The flanges of the inner housings are attached to each other and one of the flanges is positioned above the bent portion of the shutter member.

Abstract: A cross axis cable management system comprising a bird cage mechanism, a clock spring mechanism and a rolling loop mechanism positioned about a first axis, second axis and third axis of a gimbal mechanism respectively. Each mechanism provides defined channels and protective elements to prevent cable damage. The mechanisms also have one fixed end, one rotational end, and an optimized amount of slack for repeatable cable motion. The system effectively manages a large number of conventional and fiber optic cables while minimizing the friction or drag associated with the motion about the multiple axes and preventing cable damage and the resultant loss of performance.

Abstract: A main housing for optical sub-assembly for transceivers includes a cylindrical member and a bypass member. The cylindrical member has a first end for accommodating an optical transmission unit and a second end for accommodating an optical fiber connector. A tubular member forming groove is formed on an outer circumference of the cylindrical member. A sleeve forming reference hole is formed on a tubular wall of the cylindrical member in communication with the tubular member forming groove. The bypass member has a connection tube positioned in the tubular member forming groove, a filter holder positioned in the cylindrical member and connected with the connection tube for connecting a filter on the filter holder, and a sleeve for accommodating an optical receiving unit. The sleeve outward extends along the sleeve forming reference hole and is connected with the filter holder.

Abstract: A device 10 for organizing an array of optical fiber cables (14) terminated with fiber optic connectors (20). The device includes a base plate (22) having a plurality of mounting sites (24) configured to receive a like plurality of dust covers (20) for the respective fiber optic connectors (18). Two or more base plates (22) may be stacked through use of stacking spacers (42) to increase the number of mounting sites (24). The device 10 maintains the array of optical fiber cables during manufacture, shipping and handling, eliminating snarling of the individual optical fiber cables (14).

Abstract: Systems and methods for recording and replaying a troubleshooting event between a customer and CARE agent are provided. The method includes configuring a communication component of the remote mobile management systems to enable recording of a media stream associated with entire troubleshooting session; transmitting the media stream over a network based on the configuration of the communication component; receiving the media stream over the network; and replaying the received media stream. As a result, a special mode of Virtual Mobile Management (VMM) tool that allows remote support technicians to record the entire troubleshooting session from the management console is provided by present invention and they can replay the events to help trace the problems encountered by the user on the device.

Abstract: There is described a method and system for recording, transmitting, and playing videos of an event-based format. Instead of providing a representation of each frame in a video as a complete image with brightness and color information for each pixel composing the image, each frame of a video is represented using a minimal data set that corresponds to an event that has taken place during the frame. Events are detected and recorded and the video may then be reconstructed by identifying actions that are triggered by the recorded events and executing the actions accordingly. Actions are identified by matching an event and an event coordinate, considering the objects and/or shapes present in a frame at the event coordinate and determining the consequences of the event on the objects/shapes.

Abstract: According to one embodiment, a video server including a recording device configured to encode a received video signal based on a predetermined encoding method into video data; a write controller configured to divide the video data in order to generate a plurality of divided data, generate a redundant data for restoring either of the divided data of the number of setup when the divided data of the number of setup in advance, perform write-in controlling of the plurality of divided data and the plurality of redundant data; a plurality of storage devices configured to record the number of setup of divided data and the redundant data based on the divided data of the number of setup by distributing herein according to the write-in controlling; and a main controller configured to record management information on the video data recorded on each storage device.

Abstract: A computer-implemented method for providing online advertising is provided. The method includes providing, by a video delivery module, online video content to a user and maintaining, by a tracking module, a content consumption counter tracking an amount of time the user has watched the video content. The method also includes preventing, by a blocking module, the user from controlling playback of the video content if the content consumption counter satisfies a time characteristic. The method further includes providing, by an advertisement delivery module, a portion of an advertisement section to the user during the preventing. The duration of the portion of the advertisement section is dependent on the time characteristic.

Abstract: A method of facilitating modified content play such that modification actions may be implemented during play of original content form. The modification actions may be specified by users to modify the original content form. The modification may be disseminated to subscribers or other users desiring similar content modifications. The method may be useful in social networking systems to allow social members to share commentary and otherwise modify original content forms to include their personal reflections.

Abstract: A receiver receives a request for content associated with a channel, determines that all channel selectors are in use, selects a set of options, and transmits the set to a presentation device. The receiver may then fulfill the request utilizing a selected option. All available channel selectors may be in use because they are tuned to frequency bands of a broadcast signal to record content and data associated the channel is included in a different frequency band. The set of options may include options to stop the current recording in favor of the requested content and options to present content included in a same frequency band to which a tuner is already tuned. In one or more implementations, the receiver may determine that content currently being recorded will be rebroadcast at a later time and may include notifications indicating such and/or options to record the content at the later time.

Abstract: In embodiments, the present invention provides a method and system for managing playback of content delivered to a mobile device with a pause and resume functionality. The method and system includes receiving delivered content on a mobile device, initiating playback of the delivered content, pausing playback of the content being delivered to the mobile device in response to an action and resuming delivery of the content upon a request.

Abstract: The invention relates to a heating cover for a device for transporting a fluid containing a hydrocarbon. The heating cover includes a first electrical insulation layer, a heating layer arranged on the first electrical insulation layer comprising carbon fibres embedded in an elastomer, a second electrical insulation layer arranged on the heating layer, a heat insulation layer arranged on the second electrical insulation layer, and power supply means.

Abstract: A dynamic double-circuit in-Line heater is disclosed, as well as a machine containing the heater and a method of operating the machine.

Abstract: A cable connection structure includes: a cable including a core wire and an external covering layer covering the core wire; a board on which an electrode is formed, the core wire being electrically connected to the electrode at an end face of the cable; and a compressing member attached to an outer periphery of the cable and radially compressing a part in a longitudinal direction of the cable.

Abstract: A camera system having an electronic flash with a variable illumination angle, comprising: an image forming system having a user-selectable field-of-view for forming an image of a scene onto an image plane; an electronic flash system including a plurality of fixed focal length illumination lenses having two or more different focal lengths and one or more light emitters positioned behind each of the illumination lenses, the light emitters being positioned relative to their respective illumination lenses to provide two or more different illumination angles onto the scene; and a flash controller that selectively fires different subsets of the light emitters responsive to the selected field-of-view of the image forming system.

Abstract: An optical attachment configured to be operably attached to the image side of an objective lens to reduce the focal length and focal ratio of the objective lens. The focal-reducing attachment includes four lens elements and has a magnification of between 0.5 and 1. The focal-reducing lens can work with objective lenses having relatively large working distances for a large format size as well as with cameras having a smaller format size and relatively small permissible working distance.

Abstract: The present invention provides an interchangeable lens mounted on a camera body in an exchangeable manner, and the interchangeable lens includes: an optical system in which a state of a subject light flux incident to the mounted camera body is adjustable by changing an optical state; a contact position detecting unit with a detection plane, which detects a contact state including a contact and a contact position of a finger of a photographer, to detect a change in a contact position on the detection plane in an approximately same direction as an optical axis direction of the optical system; and a lens controller to control an optical state of the optical system according to a contact state of the finger including the contact position detected by the contact position detecting unit.

Abstract: An optical apparatus includes a zoom optical system including a focus lens unit, an operation portion configured to manually and mechanically change a focal length of the zoom optical system, and a controller configured to control the focus lens unit so as to move along a track depending on an object distance in an operation of the operation portion. The controller moves the focus lens unit to a second position that is different from a first position that is a position of the focus lens unit in disconnecting a power when a first focal length that is a focal length of the zoom optical system in disconnecting the power is different from a second focal length that is a focal length of the zoom optical system in reconnecting the power.

Abstract: A tilt preventing structure for electromagnetic driving device comprises: a casing, a driven object (such as lens module), a guiding mechanism and an electromagnetic driving module. The driven object is received within the casing and is movable alone an axle direction. The guiding mechanism is furnished inside the casing and is sleeved with the driven object, so as to guide the driven object to move along the axle direction. The electromagnetic driving module comprises a plurality of magnetic elements mounted on the driven object. The guiding mechanism is made of magnetically susceptible material and is nearby one of the magnetic elements. By means of the magnetic pulling force generated by the nearby magnetic elements, the guiding mechanism is pulled by the force and leans against the driven object, so as to minimize the tilts when the driven object is moving relative to the guiding mechanism.

Abstract: A composite plastic member includes a first stacked body comprised of a plurality of chromium layers stacked on a plastic substrate; and a second stacked body comprised of a plurality of chromium nitride layers stacked on the first stacked body. Each of the first and second stacked bodies is formed such that a lower-hardness layer having a lower hardness than upper and lower layers which contact with and sandwich the lower-hardness layer therebetween and a higher-hardness layer having a higher hardness than upper and lower layers which contact with and sandwich the higher-hardness layer therebetween are alternately stacked in a stacking direction; and a thickness of a higher-hardness chromium nitride layer is not more than 40% of a thickness of a lower-hardness chromium nitride layer in the second stacked body. The composite plastic member has high wear resistance and satisfactory sliding performance, and the conductivity and excellent outer appearance.

Abstract: The invention discloses a camera rotation mechanism and a portable electronic apparatus therewith. The camera rotation mechanism includes a rotatable carrier, a bearing structure, and a rotating mechanism, which are disposed in a casing. The rotatable carrier includes a carrier body and a rotatable shaft connected to the carrier body and bore by the bearing structure. A camera module is disposed on the carrier body such that a lens of the camera module is exposed through a lens hole of the casing. The rotating mechanism is connected to the rotatable shaft and includes a rotation operation part partially exposed through a slot hole of the casing and capable of being rotated to rotate the carrier body through the rotatable shaft. Therefore, a user can use the camera rotation mechanism to adjust the disposition angle of the lens, which solves the impossibility of adjusting a fixed camera in the prior art.

Abstract: A data relay apparatus R (e.g., one included in an ONU) that performs data transfer from one port to another port reduces power consumption by performing control to limit a receive function of a receiving unit 1 at the one port under at least one of conditions that a control instruction is received from a communication partner (e.g., an OLT) connected to the one port (port 2), and that information about control is notified to the communication partner; and allows the receive function to recover when a predetermined recovery condition is satisfied (e.g., a lapse of a predetermined period of time or arrival of a predetermined time). In this case, since recognition that the receive function is limited can be shared with the communication partner, the communication partner can prevent itself from performing data transmission to the data relay apparatus R when the receive function is limited.

Abstract: A Gigabit-capable Passive Optical Network (GPON), including an enhanced Optical Line Termination (OLT) and Optical Network Units (ONUs), provides enhanced features, e.g., features defined in XG-PON. One or more of the ONUs are enhanced ONUs. The enhanced OLT communicates with the ONUs via downstream frames and upstream bursts, each downstream frame and upstream burst being compliant with a GPON framing format. The enhanced OLT transmits downstream frames to the ONUs, the downstream frames including downstream sub-frames with at least one downstream sub-frame being an overhead sub-frame that includes information of the enhanced features. The enhanced OLT receives upstream bursts from the ONUs, the upstream bursts including upstream sub-frames, each upstream sub-frame including an upstream identifier field that indicates to the enhanced OLT whether the upstream sub-frame is an overhead sub-frame.

Abstract: A device able to evaluate a phase difference between I-component and Q-component of signal light generated by an optical hybrid is disclosed. The device includes a detector, a compensator and an evaluator. The detector detects positive and negative elements of each of the I-component and the Q-component. The compensator generates a compensated I-component and a compensated Q-component so as to keep the sum of positive and negative elements of each of components in constant. The evaluator determines the phase difference via an ellipsoid drawn by the compensated I- and Q-components.

Abstract: A method for optically transmitting data between a transmitter and a receiver is disclosed, in which a colour coding method based on a plurality of elemental colours is provided for the coding and transmission of the data, which colour coding method involves a respective elemental colour being sent by a respective transmitter-end optical radiation source and being received at the receiver end by a respective optical radiation receiver. The method provides for a control loop to be formed between the transmitter and the receiver, wherein the transmitter sends calibration messages to the receiver, and wherein a piece of compensation information is ascertained by comparing at least one channel property of at least one received calibration message with a corresponding channel property of at least one previously sent calibration message, and wherein the transmitter takes the compensation information as a basis for adjusting at least one transmission parameter.

Abstract: An optical frequency locking method tunes each of a plurality of narrow-band optical channel transmit signals (having arbitrary channel frequency spacings) to a dedicated optical channel frequency. The method includes tapping-off a portion of the optical power of the respective channel transmit signal and filtering the tapped-off channel transmit signal using at least one optical filter device. The method also includes monitoring, as an optical input signal, the optical power of the respective channel transmit signal supplied to the at least one optical filter device and, as an optical output signal, the optical power of the filtered channel transmit signal. The method further includes tuning, within a predetermined locking range for the dedicated optical channel frequency, the optical frequency of the respective channel transmit signal such that a predetermined value for the ratio of the output signal and the input signal is reached.

Abstract: An optical transmission system includes an optical transmitting unit that outputs at least one optical signal having a wavelength included in an operation wavelength band and a holey fiber that is connected to the optical transmitting unit. The holey fiber includes a core and a cladding formed around the core. The cladding includes a plurality of holes formed around the core in a triangular lattice shape. The holey fiber transmits the optical signal in a single mode. A bending loss of the holey fiber is equal to or less than 5 dB/m at a wavelength within the operation wavelength band when the holey fiber is wound at a diameter of 20 millimeters.

Abstract: A node (260, 50) for a multi-token optical communications network has optical channels between the node and other nodes, each channel having a token (T1, T2, T3), passed between nodes, to indicate that a corresponding optical channel is available for transmission during a token holding time. The node has a transmitter (280) for transmitting packets over the optical channels, a buffer (170, 270) for queuing packets before transmission, and a transmit controller (170, 290) configured to control the buffer to forward an initial packet or packets from the buffer to the transmitter once a token has been received. The transmit controller determines how much of the token holding time remains after the transmission of the initial packet or packets, and then controls the buffer to forward a further packet according to the remaining token holding time. A maximum packet delay can be reduced where there is asymmetric traffic. A token holding time can be different for different nodes.

Abstract: A point-to-multipoint optical communication network includes a fiber optic cable, and a single photodiode for optical/electrical conversion at the upstream end of the cable. On the other hand, an “n” number of electrical/optical up-converters are connected between an “n” number of downstream points and the downstream end of the cable. Within this arrangement, radio frequency signals “fn” from respective “n” different downstream points are impressed onto respective wavelengths “?n”. The resultant optical signals “?n” can then be simultaneously transmitted upstream over the fiber optic cable, and passed through the photodiode for optical/electrical conversion and transmission to an upstream point, according to “fn”. For downstream communications, a single transmitter and a single wavelength ? can be used to transmit all fn signals.

Abstract: A communications device includes a transmitter device having first and second optical sources and generating respective first and second modulated optical carrier signals at first and second optical carrier frequencies based upon an input signal. The communications device also includes an optical waveguide coupled to the transmitter device, and a receiver device coupled to the optical waveguide and including an FM-PM discriminator having a transfer function with a positive slope portion and a negative slope portion so that the first optical carrier frequency is positioned on the positive slope portion and the second optical carrier frequency is positioned on the negative slope portion.

Abstract: A communication system, comprising a wireless communication device including a plurality of antennas communicatively coupled with a communication component, the communication component including a processor, a transmitter, and a receiver, the communication component configured to transmit a first data stream by simultaneously transmitting a first plurality of signal streams using the plurality of antennas, the first plurality of signal streams collectively representing the first data stream, the communication component configured to receive a second data stream by simultaneously receiving a second plurality of signal streams using the plurality of antennas and generating the second data stream from the second plurality of signal streams.

Abstract: Provided are devices, systems, and methods for wirelessly streaming digital data to an optical disc. Embodiments of the device are designed to enable real time, wireless streaming of data via wireless communication. A user can wirelessly stream data from an electronic device capable of wireless communication, to an optical disc containing a memory, a power supply, a processor, a transceiver, a charging device, and an optical modulator. An optical disc reader can then read the electronic data on the optical disc to process the electronic data in real time.

Abstract: Cable communication systems and methods to provide voice and/or data services to subscriber premises in one or more neighborhood nodes via an ingress-mitigated cable plant that conveys upstream information over an upstream path bandwidth. One or more upstream radio frequency (RF) signals have a carrier frequency of between approximately 5 MHz and 19.6 MHz and are modulated using quadrature amplitude modulation (QAM) with voice and/or data information constituting at least some of the upstream information. An example RF signal defines a channel having an average channel power, and a highest value for an average noise power between 5 MHz and 19.6 MHz in the upstream path bandwidth of a given neighborhood node, as measured over at least a 24 hour period, is at least 25 decibels (dB) below the average channel power and/or less than 20 decibels (dB) above a noise floor associated with the neighborhood node.

Abstract: An apparatus for simulating radio frequency (RF) signal propagation characteristics in a wireless communication network is disclosed. The apparatus includes a first RF terminal and a second RF terminal. A first optical modulator is in electrical communication with the first RF terminal. An optical delay line is in optical communication with the first optical modulator. A first optical demodulator is in optical communication with the optical delay line and in electrical communication with the first RF terminal. A second optical demodulator is in optical communication with the optical delay line and in electrical communication with the second RF terminal. A second optical modulator is in electrical communication with the second RF terminal and in optical communication with the optical delay line.

Abstract: A system for communication between two communication platforms, including a near-earth returning platform and a remote platform. A bidirectional asymmetrical communication link is set up between the two platforms.

Abstract: A hearing system includes a hearing device for wear by a user, the hearing device comprising a speaker, and an optical receiver configured to detect light signals, and generate electrical signals in response to the detected light signals, wherein the speaker of the hearing device is communicatively coupled to the optical receiver, and is configured to provide audio signals based at least in part on the electrical signals. A hearing system includes a hub configured to receive an input from a user of the hub, and generate an output in response to the input, and a light source communicatively coupled to the hub, wherein the light source is configured to provide light signals for reception by a hearing device based at least in part on the output from the hub.

Abstract: An optical communication module comprising: a light emitting element to emit light; a light transmission medium to receive incidence of the light from the light emitting element; a diverging unit to be provided on the light transmission medium and to diverge some proportion of the light emitted from the light emitting element to the light transmission medium and propagating within the light transmission medium; and a first light receiving element to receive the light from the light emitting element, which is diverged by the diverging unit.

Abstract: In some embodiments, an optical transmission system includes a few-mode fiber that supports at least 2 spatial modes but no more than 50 spatial modes.

Abstract: A frame transmitting unit divides a payload area of an upper-layer frame into a plurality of slots, maps a lower-layer frame to one or more of the slots, and transmits the upper-layer frame including connection information that indicates which one or more of the slots the lower-layer frame of a same type is mapped to. The frame synchronization detection unit identifies, as one or more allocated slots, the one or more slots to which the lower-layer frame of the same type is mapped, on the basis of the connection information, and detects the frame synchronization by identifying a frame head signal of the lower-layer frame of the same type that is mapped to the one or more allocated slots.

Abstract: An optical device comprising a sealed/closed housing; a light source and/or a detector within the housing; a window through the housing that is transparent to light transmitted from the light source or to the detector and a fixing for fixing an optical fiber or bundle of such fibers into a coupling position adjacent to the window to allow light to pass between the housing and the fiber or fiber bundle, wherein the fixing is adapted to allow connection and/or disconnection of the fiber or fiber bundle without opening or breaking a seal of the sealed housing.

Abstract: According to a first aspect of the present invention there is provided an apparatus for performing power equalisation and phase correction of two signals (400). The apparatus comprises a first hybrid coupler (401) configured to operate as a power combiner, and a second hybrid coupler (402) configured to operate as a power divider, wherein the apparatus is configured to provide an output (406) of the first hybrid coupler as an input (407) to the second hybrid coupler.

Abstract: An image forming device includes: a decolorable first developer decolorized by being heated to a certain decolorizing temperature or higher and fixed by being heated to a first fixing temperature lower than the decolorizing temperature; a non-decolorable second developer being fixed at a second fixing temperature higher than the certain decolorizing temperature; a conveying unit to determine a sheet printed by trial printing as a sheet for final printing, the sheet being provided with a first developer image, the conveying unit feeding the sheet for final printing toward a transferring unit to transfer a second developer image on the first developer image on the sheet for final printing; and a controller having a trial printing mode in which the first and second developer images are heated and pressed simultaneously at the second fixing temperature on the sheet for final printing.

Abstract: An image forming apparatus includes a transfer device to transfer a toner image formed on an image bearing member onto a recording medium, a sheet separation device to separate the recording medium from the image bearing member, a sheet separation bias application device to apply to the sheet separation device a sheet separation bias in which an alternating current (AC) component is superimposed on a direct current (DC) component, and a transfer bias application device to selectively apply to the transfer device one of a DC transfer bias having a DC component and a superimposed transfer bias in which an AC component is superimposed on a DC component. Upon application of the superimposed transfer bias to the transfer device, the sheet separation bias applied to the sheet separation device is changed from the sheet separation bias applied upon application of the DC transfer bias to the transfer device.

Abstract: An image forming apparatus capable of performing both of stabilization of image density on a short-term basis and that on a long-term basis in a compatible manner. A CPU predicts an amount of electrostatic charge of toner particles in a developer container, sets a potential forming condition for image creation, and forms a toner image to be fixed on a recording medium, on a photosensitive drum according to the set potential forming condition. The CPU forms a pattern image for controlling a toner replenishment amount, on the photosensitive drum, under a potential forming condition which is set independently of the potential forming condition for image creation, and controls the amount of toner to be supplied to the developer container such that density of the pattern image, detected by an optical sensor, becomes equal to a target density.

Abstract: An image forming apparatus adjusts a gamma-LUT of a gamma correction circuit in accordance with density data on a measurement image formed on a photosensitive drum. A CPU selects a conversion table in association with the image formation condition such as laser power of a semiconductor laser, fixing temperature of a fixing device, or a charge in a developer. A luminance/density converting portion converts luminance data on the measurement image into density data using the conversion table selected by the CPU. The CPU adjusts a contrast potential and a gamma-LUT using this density data.