Telepen is a linear barcode symbology capable of encoding full range of ASCII characters. Telepen was developed in 1972 in UK and contain a checksum digit.
Telepen is also known with other well-liked names including Telepen Barcode, Telepen Numeric, Telepen Full ASCII, and SB Electronic Systems Barcode.
Character set of Telepen
Telepen contains the following character set:
- Lowercase letters (a-z) and Uppercase letters (A-Z)
- Non-printable control characters including carriage-return, line-feed, horizontal tab,etc.
Telepen barcode contains two different modes:
Structure of Telepen
The fundamental four bar-space modules are defined by Telepen:
- Narrow bar-narrow space for bit 1
- Wide bar-narrow space for bit sequence 00
- Wide bar-wide space for bit sequence 010
- Narrow bar-wide space for bit sequence 01 or 10 (the sense vary, as a result 01110 is encoded as 01 1 10 where first and third module is identical).
The scheme permits encoding all even parity bytes and able to still be used for uninterrupted bit stream.
Applications of Telepen
- Telepen have been employed in various countries and mainly used in UK.
- Many universities and other academic libraries implement Telepen.
- Telepen is also used in military applications.