KR930023862A - Scanning apparatus for performing omnidirectional scanning pattern on display - Google Patents

Abstract

A scanning device in a scanner comprising scanning elements capable of repeating high-speed repetitive scanning of displays with different light reflectances, ie bar code symbols, etc., relating to the operation of scanning devices in the form of high-speed scanning. A device capable of scanning an indication in an omni-directional scan pattern. Various omni-directional scanning patterns are achieved by controlling the electrical energy input to the read-start device for operating the scanning elements of the scanner for oscillating between the first and second pairs of scanning end positions. The energy input is then controlled and diversified so that the scanning element can carry out the aforementioned omni-directional scanning pattern on the display.

Description

Scanning apparatus for performing omnidirectional scanning pattern on display

Since this is an open matter, no full text was included.

1 is a longitudinal sectional view of an embodiment of a laser scanning device that includes a resonance imbalance scanning element and is a hand-held gun-shaped part. 2 is a cross-sectional view of a conventional injection device.

Claims (24)

A scanner for reading a display having different portions of light reflectance, the scanner comprising: (a) means for directing light rays from the scanner towards the display; And (b) means for collecting the reflected light back from the indication; And (c) a device for scanning the display with the light beam, the device comprising; (i) scanning member; and (ii) installing the scanner member to angularly oscillate in at least the first and second scanning directions between the first and second pairs of scanning end positions, the scanner member being subjected to rapid vibration rotation and slow vibration Holder means comprising first and second vibration means cooperating to angularly oscillate in a first and second orthogonal scan direction about each axis so as to be capable of rotation and oscillating in two orthogonal planes; and (iii) Simultaneously move the scanning member in the at least 1,2 scanning direction to angularly oscillate the scanning member between the first and second pair of scanning end positions to direct the light in the at least 1,2 scanning direction Read-start means for generating a specific omni-frequency pattern on the display; and (iv) different operating energy levels or frequencies to enable the scanner member to perform various modes of operation. A control means operatively connected to said read-start means for conveying a number to said read-start means. The scanner according to claim 1, wherein said scanning member is capable of executing a forward Lissajoin scanning pattern on a display by said control means for said read-starting means. 3. The scanner of claim 2 wherein the control means operates the read-start means to operate in Lissajous and forward scan patterns with a direction freedom of approximately ± 30 ° for decoding bar code symbols. The scanner of claim 3, wherein the scanning member facilitates omnidirectional scanning of the symbol in the presentation mode. The scanner of claim 3, wherein the scanning member facilitates omni-directional scanning of the symbol in the pass mode. 2. The apparatus according to claim 1, wherein in order to implement a double-issaw omnidirectional scanning pattern on a display, long-term control means for operating the read-start means is for a pair of the scanning end positions in one said scanning direction. Scanner that periodically replaces the input frequency. 2. The control means according to claim 1, wherein said control means operates said read-start means so as to continuously change the amplitude in said first and second vibration means to make a Lissajous omnidirectional scanning pattern in various directions for the display. Letting scanner. The scanner according to claim 1, wherein said control means for operating said read-start means changes the frequency or intensity of a current supplied to said read-start means. The scanner according to claim 1, wherein the first vibrating means is composed of a U-shaped spring having a pair of arms, and the scanner member is installed at a free end of one of the arms. 10. The scanner according to claim 9, wherein said second vibrating means is composed of a substantially planar spring having one end attached to the other end of the U-shaped spring and the other end attached to the base. 11. The apparatus of claim 10, wherein the read-start means comprises an electrically actuated actuator responsive to the read-start means for vibrating the holder means to angularly oscillate the member in the first and second scan directions, And the actuator comprises an electromagnet coil having a passage and a magnet installed in the holder means to enter and exit the passage during operation of the coil. The scanner according to claim 11, wherein the magnet is provided in the holder means adjacent to a contact between the other end of the planar spring and the other end of the U-shaped spring. 12. The apparatus of claim 11, wherein the first vibrating means vibrates in a high frequency range, and the second vibrating means is configured to vibrate in a low frequency range, by the control means at least one signal having a frequency within the high frequency and the low frequency. And a raster type scan pattern on a display in response to a drive signal transmitted to said coil of said read-start means by foaming at least one second frequency having a frequency in the range. 10. The scanner of claim 9 wherein the dimensions of the pair of arms of the U-shaped springs are asymmetrical. A scanner according to claim 10, consisting of a bent leaf spring of said U-shaped spring. The scanner of claim 1, wherein the indication is a bar code symbol and the scanner is a bar code reader. A method for reading the representation of parts with different light reflectances; Direct light rays from the scanner member of the scanner to the indication; Collect the reflected light returned from the display; Cooperating to oscillate angularly in the first and second orthogonal scanning directions about each axis to enable the scanner member to make a rapid oscillation rotation and a slow oscillation rotation, and including oscillating the scanner member in two orthogonal planes; Install the scanner member to angularly oscillate in at least the first and second scan directions between the first and second scan end positions, and to direct the light in the at least one or two scan directions. Simultaneously moving the scanning member in the at least one or two scanning directions to simultaneously angularly vibrate the scanning member between injection end positions; And conveying different operating energy levels or frequencies to the read-start means so that the scanner member can carry out various modes of operation to create a particular omni-directional scan pattern on the display. 18. The method according to claim 17, wherein the scanning member can implement a forward Lissajoux scan pattern on the display by the operation of the read-start means. 19. The method of claim 18, wherein the read start means is operated to operate in Lissajous and forward scan patterns with direction freedom of approximately ± 30 ° for reading bar code symbols. 20. The method of claim 19, wherein the scanner member facilitates omni-directional scanning of the symbol in presentation mode. 20. The method of claim 19, wherein the scanner member facilitates omni-directional scanning of the symbol in a pass through mode. 18. The method of claim 17, wherein the read-start means is actuated to effect a dual-lisa forward-directional scan pattern on a display to periodically replace input frequencies for the pair of scan ends in one of the scan directions. . 18. The method of claim 17, wherein the read-start means is operated to continuously vary the oscillation amplitude of the scanner member to make a Lissajous omnidirectional scanning pattern for various indications on the display. 18. A scanner according to claim 17, wherein the read-start means is activated to change the frequency or intensity of the current supplied to the read-start means. ※ Note: The disclosure is based on the initial application.