In today's article we will explore CPC Binary Barcode, a topic that has gained great relevance in recent years. CPC Binary Barcode has captured the attention of experts and enthusiasts alike, generating discussions and debates in various fields. From its impact on industry to its implications on society, CPC Binary Barcode has become a point of interest for those who want to better understand the world around us. Throughout this article, we will closely examine the many facets of CPC Binary Barcode, analyzing its evolution over time and its influence in different contexts. Prepare to embark on an exciting journey of discovery and reflection about CPC Binary Barcode.
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CPC Binary Barcode is Canada Post's proprietary symbology used in its automated mail sortation operations. This barcode is used on regular-size pieces of mail, especially mail sent using Canada Post's Lettermail service. This barcode is printed on the lower-right-hand corner of each faced envelope, using a unique ultraviolet-fluorescent ink.
The applied barcode uses printed and non-printed bars, spaced 3 millimetres (0.12 in) apart, and consists of two fields. The rightmost field, which is 27 bars in width, encodes the destination postal code. The leftmost field is 9 bars in width and applied right below the printed destination address. It is currently unclear what this field is used for.
In the postal code field, the rightmost bar is always printed, to allow the sortation equipment to properly lock onto the barcode and scan it. The leftmost bar, a parity field, is printed only when necessary to give the postal code field an odd number of printed bars. The remaining 25 bars represent the actual destination postal code. To eliminate any possibility of ambiguity during the scanning process, run-length restrictions are used within the postal code field. No more than five consecutive non-printed bars, or spaces, are permitted, and no more than six consecutive printed bars are allowed.
The actual representation of the postal code is split into four subfields of the barcode, each with their own separate encoding table. The first and last subfields, which share a common encoding table, are always eight bars in width, and encode the first two characters and the last two characters of the postal code respectively. The second subfield, which encodes the third character of the postal code, is always five bars in width, and the third subfield, which encodes the fourth character, is always four bars wide.
Here are some examples of encoded postal codes. The colour used in these examples is meant to simulate the actual colour of the ink used to print the barcodes, however it does not exactly match. Select these examples to make them more visible.
A1B 2C3: | ||| | || | || || |||
K1A 0B1: | || | |||| | || | |
V6B 2R5: | | || || | | | | | ||
Note that postal codes use only 20 letters; six letters (D, F, I, O, Q, U) are never used. Unused codepoints are indicated with dashes.
First and fourth fields (8 bits) | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
00: –– | 01: –– | 02: –– | 03: –– | 04: –– | 05: –– | 06: –– | 07: –– | 08: –– | 09: –– | 0A: –– | 0B: –– | 0C: –– | 0D: –– | 0E: –– | 0F: –– |
10: –– | 11: X0 | 12: V1 | 13: V3 | 14: X1 | 15: V5 | 16: V6 | 17: V7 | 18: –– | 19: V2 | 1A: V0 | 1B: V4 | 1C: X2 | 1D: V8 | 1E: V9 | 1F: –– |
20: Z1 | 21: N1 | 22: L1 | 23: L3 | 24: T1 | 25: L5 | 26: L6 | 27: L7 | 28: W1 | 29: L2 | 2A: L0 | 2B: L4 | 2C: P1 | 2D: L8 | 2E: L9 | 2F: –– |
30: Z3 | 31: N3 | 32: K1 | 33: K3 | 34: T3 | 35: K5 | 36: K6 | 37: K7 | 38: W3 | 39: K2 | 3A: K0 | 3B: K4 | 3C: P3 | 3D: K8 | 3E: K9 | 3F: –– |
40: –– | 41: X3 | 42: M1 | 43: M3 | 44: X4 | 45: M5 | 46: M6 | 47: M7 | 48: –– | 49: M2 | 4A: M0 | 4B: M4 | 4C: X5 | 4D: M8 | 4E: M9 | 4F: –– |
50: Z5 | 51: N5 | 52: R1 | 53: R3 | 54: T5 | 55: R5 | 56: R6 | 57: R7 | 58: W5 | 59: R2 | 5A: R0 | 5B: R4 | 5C: P5 | 5D: R8 | 5E: R9 | 5F: –– |
60: Z6 | 61: N6 | 62: J1 | 63: J3 | 64: T6 | 65: J5 | 66: J6 | 67: J7 | 68: W6 | 69: J2 | 6A: J0 | 6B: J4 | 6C: P6 | 6D: J8 | 6E: J9 | 6F: –– |
70: Z7 | 71: N7 | 72: A1 | 73: A3 | 74: T7 | 75: A5 | 76: A6 | 77: A7 | 78: W7 | 79: A2 | 7A: A0 | 7B: A4 | 7C: P7 | 7D: A8 | 7E: A9 | 7F: –– |
80: –– | 81: –– | 82: H1 | 83: H3 | 84: X9 | 85: H5 | 86: H6 | 87: H7 | 88: –– | 89: H2 | 8A: H0 | 8B: H4 | 8C: –– | 8D: H8 | 8E: H9 | 8F: –– |
90: Z2 | 91: N2 | 92: G1 | 93: G3 | 94: T2 | 95: G5 | 96: G6 | 97: G7 | 98: W2 | 99: G2 | 9A: G0 | 9B: G4 | 9C: P2 | 9D: G8 | 9E: G9 | 9F: –– |
A0: Z0 | A1: N0 | A2: S1 | A3: S3 | A4: T0 | A5: S5 | A6: S6 | A7: S7 | A8: W0 | A9: S2 | AA: S0 | AB: S4 | AC: P0 | AD: S8 | AE: S9 | AF: –– |
B0: Z4 | B1: N4 | B2: C1 | B3: C3 | B4: T4 | B5: C5 | B6: C6 | B7: C7 | B8: W4 | B9: C2 | BA: C0 | BB: C4 | BC: P4 | BD: C8 | BE: C9 | BF: –– |
C0: –– | C1: X6 | C2: B1 | C3: B3 | C4: X7 | C5: B5 | C6: B6 | C7: B7 | C8: –– | C9: B2 | CA: B0 | CB: B4 | CC: X8 | CD: B8 | CE: B9 | CF: –– |
D0: Z8 | D1: N8 | D2: E1 | D3: E3 | D4: T8 | D5: E5 | D6: E6 | D7: E7 | D8: W8 | D9: E2 | DA: E0 | DB: E4 | DC: P8 | DD: E8 | DE: E9 | DF: –– |
E0: Z9 | E1: N9 | E2: Y1 | E3: Y3 | E4: T9 | E5: Y5 | E6: Y6 | E7: Y7 | E8: W9 | E9: Y2 | EA: Y0 | EB: Y4 | EC: P9 | ED: Y8 | EE: Y9 | EF: –– |
F0: –– | F1: –– | F2: –– | F3: –– | F4: –– | F5: –– | F6: –– | F7: –– | F8: –– | F9: –– | FA: –– | FB: –– | FC: –– | FD: –– | FE: –– | FF: –– |
Second field (5 bits) | Third field (4 bits) | ||||||||||||||
00: — | 01: — | 02: L | 03: K | 04: M | 05: R | 06: J | 07: A | 0: — | 1: — | 2: 1 | 3: 3 | ||||
08: H | 09: G | 0A: S | 0B: C | 0C: B | 0D: E | 0E: Y | 0F: — | 4: — | 5: 5 | 6: 6 | 7: 7 | ||||
10: — | 11: V | 12: — | 13: X | 14: T | 15: — | 16: N | 17: — | 8: — | 9: 2 | A: 0 | B: 4 | ||||
18: W | 19: — | 1A: Z | 1B: — | 1C: P | 1D: — | 1E: — | 1F: — | C: — | D: 8 | E: 9 | F: — |
No field begins or ends with more than three consecutive 1 bits, guaranteeing that there are never more than six consecutive 1 bits. Guaranteeing the five-bit limit on consecutive 0 bits is achieved by limiting the boundaries of the second and fourth fields to three consecutive 0 bits, and the first and third fields to two consecutive 0 bits: