Abstract: A bar code recognizing/demodulating circuit compares with each other a demodulated data string including a start bar but excluding an end bar and a demodulated data string including the end bar but excluding the start bar among a variety of demodulated data strings obtained by a scan/convergence optical system scanning a bar code. A total sum of the numbers of digits of the two demodulated data strings is detected, and whether the total sum is larger than the number of digits of the bar code to be read is checked. If larger than the number of digits of the bar code, whether data of overlapped portions of the two demodulated data strings coincide with each other is checked. If coincident, demodulated data corresponding to the whole bar code are synthesized based on the two demodulated data strings.

Abstract: A demodulated data storage buffer stores bar width data sets obtained during one scan with laser beams L through a scan optical system. A CPU sequentially demodulates these bar width data sets and stores the demodulated data storage buffer with the bar width data sets as a series of demodulated data strings. The CPU compares respective items of demodulated data with each other that are included in the demodulated data string and preferentially treats, as effective data, the demodulated data based on "continuous reading" and the "block reading". The CPU conceives as noise data the demodulated data logically impossible from a mutual relationship between these items of demodulated data and deletes the same demodulated data.

Abstract: A bobbin casing assembly for a sewing machine having a driver, a main shaft, and a needle bar. The bobbin casing assembly comprises a bobbin casing and an engaging member protruding outwardly from the bobbin casing, an upper end of the engaging member being disposed below an upper surface of the driver when an angle of rotation of the main shaft is substantially in a range of 5.degree. to 35.degree., wherein the angle of rotation of the main shaft is 0.degree. when the needle bar is at a top dead point.

Abstract: A process for reading optical codes includes reading an optical code by irradiating a scanning beam onto an optical code and detecting a reflected beam of the scanning beam from the optical code. A determination is made if the optical code and an optical code reader are moving relative to each other, and data of the optical code are invalidated if it is determined that the optical code and the optical code reader are moving relative to each other, and data of the optical code are validated if it is determined the optical code and the optical code reader are not moving relative to each other.

Abstract: A CPU demodulates data obtained by a "continuous reading", data obtained by a "block reading" and data obtained by a "divided reading" among a variety of bar width data sets stored in a bar width data set storage buffer before demodulated data corresponding to a whole bar code are first synthesized. Once the demodulated data corresponding to the whole bar code are synthesized, whether the data used for the synthesization include the data obtained by the "divided reading" is checked. Then, if the data used for the synthesization do not include the data obtained by the "divided reading", only the data obtained by the "continuous reading" and the data obtained by the "block reading" are demodulated.

Abstract: An add-on bar code reading apparatus used in a bar code reader identifies a block of a main-part bar code by detecting start and end guard-bars, determines a right end of the main-part bar code based upon whether all the characters in the block carry even parity, detects the add-on bar code a predetermined interval after the right end, and reads the add-on bar code thus-detected. The apparatus also determines whether a plurality of sets of add-on characters are read which have differing numbers of characters, compares the plurality of sets of add-on characters character-by-character for equality in character code and in parity, and determines whether the number of characters is equal to that of the set having the smallest number of characters. When a match is determined the set of add-on characters having the largest number of characters for the add-on bar code is selected.

Abstract: A DMA controller DMA-transfers a bar width data set generated by a bar width counter to an external RAM. The DMA controller simultaneously DMA-transfers the bar width data set written in the external RAM to an internal RAM. An MPU reads the bar width data set written in the internal RAM at a high speed and demodulates the read bar width data set between the reading processes.

Abstract: A bobbin thread end holding device in a sewing machine in which an upper thread and a bobbin thread are used holds an end portion of the bobbin thread after cut. The bobbin thread end holding device has a cutter for cutting the upper thread and the bobbin thread, and a bobbin thread control member. The bobbin thread control member includes: a thread control hole into which the upper thread and the bobbin thread are led; and a prolongation extending from the control hole, for outwardly introducing the end portion of the bobbin thread cut by the cutter from the control hole.

Abstract: A needle receiving assembly for a sewing machine comprising a throat plate through which a sewing needle can pass and a needle collar for regulating a rear loop of an upper thread passing through the sewing needle. The position of the needle collar relative to the sewing needle is adjustable.

Abstract: A detecting and decoding circuit detects and decodes a multiple-row bar code consisting of n rows, each of which has a left block and a right block. A bar code data editing circuit extracts one bar code data a decoded signal received from the detecting and decoding circuit and performs a modulo 10 check for the bar code data. In addition, a determination circuit receives the edited result of the bar code data editing circuit and determines whether or not the number of each of right block data and left block data is n, whether or not the number of valid data in the modulo 10 check is n, whether or not the number of sequence data is n-1, and whether or not any two data of each of the left block data and the right block data are not the same as each other, and for outputting a reading valid signal when all these conditions are satisfied.

Abstract: An object of the present invention is to provide a radiation site detector which can detect a position of an incident scintillator with high precision by excluding the effect of Compton scattering. The radiation site detector is provided with a scintillator array having a plurality of scintillators into which a radiation is made incident, and a photodetector for converting scintillations occurring in the scintillators to independent photoelectric conversion signals to output them. A level of each of photoelectric conversion signals output from a specific scintillator to be judged whether the radiation has been incident thereinto, and from a plurality of scintillators around the specific scintillator, is compared with a plurality of threshold values different from one another so as to determine whether the levels are within or outside a window defined by the threshold values.

Abstract: This invention is intended to contribute to improvements of the reading accuracy of a bar code reader and performance of a POS system or the like. To attain this object, according to the invention, when one of the data blocks constituting a bar code cannot be detected, addresses of the non-detected data block are determined based on a width of the detected data block and addresses of the center bar. The invention is constituted such that data of the previously non-detected data block is detected based on its addresses.

Abstract: An apparatus for demodulating bar codes is disclosed. In this apparatus of this invention, a distortion quantity calculation unit for calculates a distortion quantity of a bar width of a character to be demodulated by use of bar code data generated by reading the bar codes in which characters are expressed by bar widths. A distortion quantity determining unit determines whether or not a bar width distortion quantity calculated by the distortion quantity calculation unit falls within a range of predetermined values. A first demodulation unit, when determining that the distortion quantity of the bar width falls within the range of the predetermined values, demodulates the character from the bar code data by effecting a first correcting process on the bar width distortion quantity.

Abstract: A bar code reader using a high speed scanner, containing: a scanning unit scanning a surface on which a bar code is printed; a bar width detecting unit successively detecting widths of bars; a bar width storing unit storing the widths; an address generating unit generating an address of the bar width storing unit at which each of the widths is to be stored; a fast screening unit determining whether a set of widths successively detected by the bar width detecting unit satisfies a predetermined condition for the set of widths constituting a complete bar code; and a bar code decoding unit reading a set of successive widths from the generated address, and decoding the bar code determined by the complete bar code detecting unit. A type of bar code detecting unit detecting a type of bar code constituted by the detected widths, and an address & type storing unit storing the detected type of bar code, together with information on the generated addresses for the widths of the bar code, may be inserted.

Abstract: The present invention relates to a bar code reading method and a bar code reader applied preferably to POS systems used in the distribution industry. The object of the invention is to achieve an improved reading ratio or a reduced erroneous reading ratio in practical use by evaluating quantitatively the reliability of demodulation data and by performing a coincidence checking plural times only when a large error is recognized. When a reading distortion amount measured is within a predetermined allowable value, data extracted and demodulated from the bar code is judged to be valid, whereby the bar code reading is completed. When a reading distortion amount measured is not within the predetermined allowable value, if the same data from the bar code is extracted and demodulated continuously and at least twice, the same data extracted and demodulated from the bar code is judged to be valid, whereby the bar code reading is completed.

Abstract: This invention concerns an injection molding nozzle device (25) provided with an operating valve (31) installed movably in the axial direction inside a nozzle body (4) possessed of a resin passage (12) and enclosing therewith a fluid passage (10) incorporating therein a check valve (11). This injection molding nozzle device is furnished with a fluid discharge open-shut device capable of opening or shutting a fluid discharge passage (17) formed separately of the fluid passage (10) or the check valve (11) of the fluid passage (10).

Abstract: A concentration correcting apparatus comprising a correction coefficient calculating means and a correcting means is shown and described. The correction coefficient calculating means calculates a correction coefficient for correcting the concentration of the material when the actual density of the medium at the measurement of the material is calculated in terms of the density of the medium under the reference temperature and pressure, from the results of the temperature measuring means and the pressure measuring means. The correcting means corrects the results of the material measuring means to a concentration under the reference temperature and pressure on the basis of the correction coefficient.

Abstract: A bar code reading apparatus includes a bar code reader for generating, in a single operation, plural pieces of bar block data corresponding to a bar code having a number of digits which is a predetermined standard value, for example, 8 or 13. A detector detects the numbers of digits in each piece of bar block data generated by the bar code reader 11. A four digit memory and a six digit memory are used to store bar block data having four digits and six digits, respectively. A comparator detects whether or not the four digit memory and six digit memory each store bar block data. Each piece of bar block data output from the bar code reader 11 is stored in either the four digit memory or the six digit memory depending upon the number of digits detected by the digit detector. If the comparator determines that bar block data is stored in both the four digit memory and the six digit memory, then it is determined that the bar code reading operation is erroneous.

Abstract: A position detector detects a light incident position on one of a plurality of scintillators with a photomultiplier having a number of anodes smaller in number than the scintillators and with a simple circuit configuration. A plurality of anodes are provided in one-to-two or one-to-three correspondence to the plurality of scintillators. An anode receiving photoelectrons is detected from a specific output produced from one of a plurality of first group comparators. Further, either one of two anodes adjacent the detected anode at which the major part of the photoelectrons are received is determined from the outputs of second comparators, whereby one of the plurality of scintillators can be identified.

Abstract: A semiconductor laser driving circuit has a semiconductor laser for emitting a laser beam according to a drive power. A photodetector is provided for effecting photo-electric conversion of the laser beam to output a corresponding electric signal. A monitoring circuit is connected for monitoring the electric signal to output a monitor signal indicative of variation in intensity of the laser beam. A controlling circuit is connected for comparing the monitor signal with a given reference signal to output a control signal according to difference therebetween. A powering circuit is operative according to the control signal to apply to the semiconductor laser a drive power effective to eliminate the difference. An abnormality detecting circuit is provided for comparing the monitor signal with a given limit signal which is set different from the reference signal to detect abnormality to output an abnormality signal.