Four computer programs are described which allow two amino acid or DNA sequences to be compared for homology, the results being displayed in a 2-dimensional array on a printer page. The programs also may be used to visualize repeated sequences or dyad symmetry within a DNA sequence. Two of the four programs may be used with any printer, the other two require a printer with graphics capability. ...

The realization of a wavelet-based iterative learning controller (WILC) is presented in this paper. To meet the requirements of simplified hardware, fast rapid prototyping and fast up-date cycle, a wavelet-based iterative learning control system is implemented on a single FPGA (Field Programmable Gate Array) . There are three modules in this FPGA-based system, they are a feedback module, a disc...

We examine the problem of acoustic emanations of printers. We present a novel attack that recovers what a dotmatrix printer processing English text is printing based on a record of the sound it makes, if the microphone is close enough to the printer. In our experiments, the attack recovers up to 72 % of printed words, and up to 95 % if we assume contextual knowledge about the text, with a micro...

The linearization curve generation is an important step in printer color characterization. The typical purpose of the linearization curves in conventional four ink printing is to compensate for dot overlapping and dot size variations and therefore to accommodate the non-linearity of the printing process. In CcMmYK “photo” printing, the introduction of light cyan and magenta inks presents new ch...

The utilization of 3D printing technology within the manufacturing process creates an environment that is potentially conducive to malicious activity. Previous research in 3D printing focused on attack vector identification and intellectual property protection. This research develops and implements malicious code using Printrbot’s branch of the open source Marlin 3D printer firmware. Implementa...

A least-squares model-based approach to digital halftoning is proposed. It exploits both a printer model and a model of visual perception. It produces a halftoned image that minimizes the squared error between the response of the visual model to the original image and the response of the printer and visual models to the halftoned image. For one-dimensional halftoning, where each column is proce...

In today's digital world securing different forms of content is very important in terms of protecting copyright and verifying authenticity. We have previously described the use of image texture analysis to identify the printer used to print a document. In particular we described a set of features that can be used to provide forensic information describing a document. In this paper we will intro...

The concept of a "Printer Access Protocol" or "PAP" was introduced during the mid-1980s to provide for comprehensive access to the new generation of more capable, networked printers. The design goals for a PAP need to consider the variety of data presentation protocols in use and the heterogeneous nature of distributed interconnection methods. A Digital printing architecture team adopted an exi...