Abstract: Upon completion of decoding by a first decoding part 14, a first identification signal indicative of permission or inhibition of transmission of the next data is sent to a packet transmitting device.

Abstract: The position of a light blocking object is detected not only within a display screen, but also outside the display screen. With the use of the function of detecting the position in a region outside the display screen, it becomes possible to provide virtual buttons in this region and detect dust around a light retro-reflector. Dirt on the light retro-reflector is detected based on the levels of light receiving signals of optical units.

Abstract: In a transmitter constituting a communication system, a buffer/transmission data disassembly unit disassembles a transmission packet into a plurality of blocks, an error detection coding unit attaches an error detection code to each of the blocks, and a transmitting unit transmits the blocks having the error detection code attached and retransmits a designated block designated by retransmission information from a receiver. In a receiver, a receiving unit receives blocks from the transmitter, an error detection unit detects an error in the received block, an ARQ control information generating unit generates information relating to retransmission of the received block, and a buffer/received data assembly unit recovers a data packet by combining a plurality of blocks. Improvement in transmission efficiency is attained.

Abstract: In order to measure a scanning light cut-off region, an output of a light receiving element and a threshold value set by an MPU are compared by a comparator and a region where the former is smaller than the latter is measured as the scanning light cut-off region. During one cycle of optical scanning, this threshold value is switched in a plurality of stages according to the scanning angle. By accurately measuring the scanning light cut-off region, the correct position and size of an indicator such as a finger or pen are calculated.

Abstract: A recurrence reflection sheet is provided to the outside of at least three sides of a quadrilateral display screen, two light send/receive units, which includes a light scanning element for scanning a light angularly in a plane which is substantially parallel with the display screen, and a light receiving element for receiving a reflected light from the recurrence reflection sheet, are arranged on the outside of the display screen. A cut-off region due to a finger as an indicator is obtained based on an angle of a scanning light in a timing of rise and fall of the received light level of the light receiving element, and a position of the indicator is calculated according to the obtained cut-off region.

Abstract: In the first stage, a merging position relationship (a rotation angle, and/or presence/absence of mirror image flipping) between two images is identified by using reduced images, and a rough overlapping region is detected. In the second stage, an exact overlapping position, an inclination, etc. are detected. In the third stage, the two images are merged by using the process results of the first and the second stages.

Abstract: A user specifies image data to be transferred and the conversion form of the image data. An information processing device instructs an image data obtaining device to transfer the specified image data. The transferred image data is converted into data in the form specified by the user. The image data to be transferred and the specification of its conversion form are simultaneously received, so that the image data is transferred and converted at the same time. Accordingly, user operations are reduced and user operability can be improved.

Abstract: Laser light emitted by a light emitting element is made parallel light by a collimation lens, passes through an aperture of an aperture mirror, and is then angularly scanned in a plane substantially parallel to a display screen by rotation of a polygon mirror and projected onto a recurrence reflection sheet. Then, after the reflected light from the recurrence reflection sheet is reflected by the polygon mirror and aperture mirror, the light is focused by a condenser lens to enter a light receiving element. The aperture mirror has an asymmetrical shape in the scanning direction and/or the vertical direction about the optical axis, according to a scanning surface opening width of the polygon mirror.

Abstract: An image processing device such as an image scanner, etc., and its objective is to actualize a proper binarizing routine specific to the types of images. A histogram of density values is drawn based on decoded data, and after the respective levels and frequencies of the white and black peak values have been calculated, the types of decoded images are classified based on their relationships. After the original type has been thus determined, a binarization threshold value calculation method optimally suited for said type is selected, and after the threshold value has been thereby calculated, an image binarizing routine is executed.

Abstract: An optical unit of an optical scanning-type touch panel is constructed by providing a light emitting element for emitting infrared laser light, a collimation lens for changing the laser light from the light emitting element into parallel light, a light receiving element for receiving scanning light, a slit plate for limiting incident light on the light receiving element, a polygon mirror for angularly scanning the laser light from the light emitting element, an aperture mirror for limiting light projected onto the polygon mirror from the collimation lens by an aperture and for reflecting the reflected light from the polygon mirror toward the light receiving element, a light receiving lens for focusing the reflected light from the aperture mirror, and a motor for rotating the polygon mirror in a single optical unit main body as one unit.

Abstract: The present invention concerns an image processing device and an image processing method for processing a decoded image, and its objective is to optimally binarize a decoded original. After the respective density histograms of colors R, G, and B have been drawn, the hierarchical relationship between the low-density-side peak value and high-density-side peak value is investigated. A color component which is to become a binarization object is determined based on the comparison results on the number of color components whose high-density-side peak value is/are higher and the number of color components whose low-density-side peak value is/are higher, and the color of the pixel to be outputted is determined based on the comparison of the pixel with a threshold value.

Abstract: An information displaying apparatus having a display unit for displaying information on a display screen 10, an indicator detector provided in the vicinity of the display screen 10 for detecting a position in a predetermined area on the display screen 10 indicated by an indicator and a size of the indicator, and an image control unit 52 for displaying an image on the screen 10 of the display unit according to the detected result by the indicator detector, wherein the image control unit 52 displays images on the display screen 10 of the display unit in different manners according to the position and/or size of the indicator detected by the indicator detector. According to this apparatus, for example, a thickness of one line can be changed and can be changed in steps during the drawing without specifying a size of a point and a thickness of a line to be drawn before the drawing operation. Moreover, subtle blur, etc.

Abstract: In order to measure a scanning light cut-off region, an output of a light receiving element and a threshold value set by an MPU are compared by a comparator and a region where the former is smaller than the latter is measured as the scanning light cut-off region. During one cycle of optical scanning, this threshold value is switched in a plurality of stages according to the scanning angle. By accurately measuring the scanning light cut-off region, the correct position and size of an indicator such as a finger or pen are calculated.

Abstract: A pressure sensitive adhesive sheet for the detection of microorganisms, which comprises a laminate of an adhesive layer mainly composed of a water-soluble polymer and a water-permeable membrane which does not allow passage of the microorganisms; a pressure sensitive adhesive sheet for the detection of microorganisms, wherein the surface of the adhesive layer has a contact angle with water of not more than 90°; and a method for detecting a microorganism, which comprises bringing the surface of an adhesive layer of a pressure sensitive adhesive sheet into contact with the surface of a test object, and then bringing the surface of the adhesive layer into contact with water, said adhesive layer or water containing a chromogenic reagent. The use of the laminate makes it possible to leave only stained microorganisms on the water-permeable membrane and to precisely observe the color developed by the microorganisms.

Abstract: The ultrasonic coordinates input device includes receivers grouped into a plurality of groups, each receiver receiving the ultrasonic waves propagated through a propagator so as to calculate the coordinates of the ultrasonic wave inputted positions on the basis of signals received by each group, thereby ensuring that the coordinates are calculated with a simple mathematical formulae with a negligible error if any.

Abstract: An ultrasonic coordinate input, apparatus comprising a plurality of ultrasonic wave receivers to receive ultrasonic wave emitted by a cordless ultrasonic pen and propagating in an ultrasonic propagating medium, a plurality of receiving circuits for detecting the rising edges of received signals of the ultrasonic wave receivers, a measuring circuit for measuring the difference in time of receiving ultrasonic wave between the ultrasonic wave receivers and a calculating circuit for calculating the coordinates of ultrasonic wave input position according to the result of measurement. When the receiving circuits, the measuring circuit and the calculating circuit are installed together with the ultrasonic wave receivers on the ultrasonic propagating medium, the entire apparatus can be made small in size.

Abstract: A mold for producing a padding member having side by side portions of different hardnesses integral with each other, and a method of producing the padding member using such mold. The mold has a lower half with partition walls movably extending upwardly through the bottom of the lower mold half into the interior of the lower mold half to define a plurality of cavities into which moldable materials of which the padding member is to be formed and having different hardnesses from each other can be contained. The upper mold half is placed over the lower mold half, and has pressing members extending downwardly which engage the edges of the partition walls and force the partition walls downwardly. The pressing members are spaced from each other along the partition walls, so that the materials on the opposite sides of the partition walls can contact each other and, while molding is being carried out, become integrally joined to each other.