1. An optical information detecting method comprising:
detecting an image of a source data page containing a frame mask by the use of an optical detection region within respective 1:N (where N is greater than 1) excessive detection pixels;
monitoring a light intensity of the detected image and determining a matching state of the frame mask;
determining an arrangement pattern of valid detection pixels of the detection pixels in accordance with the determined matching state of the frame mask and detecting sampling detection pixels; and
sampling an image of the sampling detection pixels from the detected image and reproducing the image of the source data page.
2. The optical information detecting method according to claim 1, wherein the valid detection pixels are detection pixels, each of which detects an image of a data pixel, among the detection pixels.
3. The optical information detecting method according to claim 1, wherein the determining a matching state of the frame mark comprising: monitoring a light intensity of the detected image and detecting a frame mark detection region which have a light intensity larger than that of other regions; and determining a matching state of the frame mark on the basis of an intensity distribution of the frame mark detection region.
4. The optical information detecting method according to claim 1, wherein the matching state of the frame mark indicates whether the frame mark is matched with the detection pixels or not.
5. The optical information detecting method according to claim 4, wherein the detection pixels in the detected image are all the valid detection pixels when the frame mark is in a matched state.
6. The optical information detecting method according to claim 5, wherein the detecting of the sampling detection pixels comprises selecting valid detection pixels to be sampled on the basis of an arrangement pattern of the valid detection pixels when the frame mark is in the matched state.
7. The optical information detecting method according to claim 4, wherein when the frame mask is in a non-matched state, the valid detection pixels and invalid detection pixels, each of which detects an image of a mixture of a plurality of data pixels, are repeated in a constant pattern in the detected image.
8. The optical information detecting method according to claim 7, wherein the detecting of the sampling detection pixels comprises classifying the detection pixels into the valid detection pixels and the invalid detection pixels on the basis of the arrangement pattern and detecting the valid detection pixels when the frame mark is in the non-matched state.
9. The optical information detecting method according to claim 1, wherein the frame mark includes a vertical frame mark and a horizontal frame mark.
10. The optical information detecting method according to claim 9, wherein the determining of the matching state of the frame mark comprises: monitoring light intensities of columns in the detected image and detecting a vertical frame mark region corresponding to the vertical frame mark; and monitoring light intensities of row in the detected image and detecting a horizontal frame mark region corresponding to the horizontal frame mark.
11. The optical information detecting method according to claim 10, wherein the vertical frame mark region includes a column having the largest light intensity and one or more neighboring columns thereof in the detected image, and the horizontal frame mark region includes a row having the largest light intensity and one or more neighboring columns thereof in the detected image.
12. The optical information detecting method according to claim 9, wherein the detecting of the sampling detection pixels comprises: detecting the valid detection pixels in the horizontal direction and the valid detection pixels in the vertical direction in accordance with the matching state of the horizontal frame mark and the vertical frame mark; and detecting the sampling detection pixels at intersections between the valid detection pixels in the horizontal direction and the valid detection pixels in the vertical direction.
13. An optical information detector comprising: an optical detection unit detecting an image of a source data page containing a frame mask by the use of an optical detection region within respective 1:N (where N is greater than 1) excessive detection pixels; a frame mark matching determination unit monitoring a light intensity of the detected image and determining a matching state of the frame mask; a sampling detection pixel detecting unit determining an arrangement pattern of valid detection pixels of the detection pixels in accordance with the determined matching state of the frame mask and detecting sampling detection pixels; and a sampling unit sampling an image of the detected sampling detection pixels.
14. The optical information detector according to claim 13, wherein the optical detection unit includes the detection pixels which are arranged at a ratio of N.times.N detection pixels per 1.times.1 data pixel of the source data page, and each detection pixel includes an optical detection region which has a size smaller than that of each detection pixel and serves to detect optical information of the data pixels.
15. The optical information detector according to claim 14, wherein each optical detection region has a horizontal width and a vertical width smaller by a half than the horizontal width and the vertical width of each detection pixel.
16. The optical information detector according to claim 13, wherein the frame mark matching determination unit determines whether the frame mark is matched with the detection pixels or not.
17. The optical information detector according to claim 16, wherein the sampling detection pixel detecting unit selects pixels to be sampled from the valid detection pixels on the basis of an arrangement pattern of the valid detection pixels when the frame mark is in a matched state, and the sampling detection pixel detecting unit classifies the detection pixels into the valid detection pixels and the invalid detection pixels and detects the valid detection pixels when the frame mark is in a non-matched state.
18. The optical information detector according to claim 13, wherein the frame mark matching determination unit monitors light intensities of the detected image, detects a frame mark detecting region having a light intensity larger than that of other regions, and determines the matching state of the frame mark by the use of a light intensity distribution of the detected frame mark detecting region.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A quick release band comprising
a first band member,
a second band member, and
a clasp assembly configured to couple the first band member to the second band member, the clasp assembly including a hinge, a clasp rotatable relative to the hinge, and a cross-member configured to engage the clasp when the band is secured to the wrist of a user, wherein the cross-member is rotatable about an axis of rotation such that an excessive load on the clasp causes the cross-member to rotate and thereby release the second band member from the clasp assembly.
2. The quick release band of claim 1, wherein the cross-member comprises a main portion, a first pivot coupled to the main portion, and a second pivot coupled to the main portion, the first and second pivots cooperating to form an axis of rotation.
3. The quick release band of claim 1, wherein the clasp assembly comprises a first member having a first cavity and a second member having a second cavity and wherein the first pivot is received in the first cavity and rotatable relative to the first member and the second pivot is received in the second cavity and rotatable relative to the second member.
4. The quick release band of claim 3, wherein the first and second bands comprise leather.
5. The quick release band of claim 3, wherein the clasp comprises spring steel.
6. The quick release band of claim 3, wherein the clasp comprises plastic.
7. The quick release band of claim 1, wherein the cross-member is spring-loaded.
8. The quick release band of claim 1, wherein the cross-member is metal.
9. The quick release band of claim 8, wherein the clasp includes a distal end which engages the cross-member such that the clasp does not cross the axis of rotation of the cross-member.
10. The quick release band of claim 1, wherein cross-member rotates and the clasp deflects to allow a band member to release from the clasp.
11. A quick release band for a wrist-watch, the band comprising
a first portion,
a second portion, and
a hinge connecting the first portion to the second portion, the hinge configured to release the portions if a load applied to the hinge exceeds a predefined maximum.
12. The quick release band of claim 11, wherein the hinge comprises a spring-loaded assembly.
13. The quick release band of claim 12, wherein the spring-loaded assembly includes a hinge pin, a first engaging pin engaged with the hinge pin, a first spring urging the first engaging pin outwardly from the hinge pin, a second engaging pin engaged with the hinge pin, and a second spring urging the second engaging pin outwardly from the hinge pin.
14. The quick release band of claim 13, wherein the first engaging pin engages a first member of the first portion and the second engaging pin engages a second member of the first portion to maintain the hinge assembly in engagement with the first portion.
15. The quick release band of claim 13, wherein the first member of the first portion includes a first cavity configured to engage the first engaging pin, and the second member of the first portion includes a second cavity configured to engage the second engaging pin.
16. The quick release band of claim 13, wherein the first and second engaging pins include engagement surfaces which are configured to engage the first and second cavities such that an load applied which has a component perpendicular to the longitudinal length of the hinge pin that is greater than an acceptable load, the bias of the first or second springs is overcome and the hinge assembly releases the first portion from the second portion.
17. The quick release band of claim 13, wherein the first and second engaging pins have conical engaging surfaces.
18. The quick release band of claim 11, wherein the hinge is frangible.
19. The quick release band of claim 18, wherein the hinge comprises a head, a shaft frangibly connected to the head, and a pin frangibly connected to the shaft, the pin, the hinge forming a portion of a clasp assembly interconnecting the first and second portions of the band, the hinge coupled to a portion of the clasp assembly through an interference fit.
20. A quick release clasp assembly for a wrist-watch comprising
a first member including a first cavity
a second member including a second cavity, the second member positioned in a spaced-apart relation to the first member, and
a hinge assembly connecting the first member to the second member, the hinge assembly configured to release the first and second members if a load applied to the hinge assembly exceeds a predefined maximum, the hinge assembly including a hinge pin, a first engaging pin engaged with the hinge pin, a first spring urging the first engaging pin outwardly from the hinge pin to engage the first cavity, a second engaging pin engaged with the hinge pin, and a second spring urging the second engaging pin outwardly from the hinge pin to engage the second cavity.