- PAL — Phase Alternating Line, the dominant television standard in Europe. The United States uses a different standard, NTSC. Whereas NTSC delivers 525 lines of resolution at 60 half-frames per second, PAL delivers 625 lines at 50 half-frames per second. Many video adapters that enable computer monitors to be used as television screens support both NTSC and PAL signals.
- PDA — personal digital assistant (Pocket PC).
- PES — Packetized Elementary Stream consists of a continuous sequence of PES packets of one elementary stream with one stream ID. When PES packets are used to form a PES stream, they shall include Elementary Stream Clock Reference (ESCR) fields and Elementary Stream Rate (ES_Rate) fields.
- PNX Nexperia/TriMedia — Nexperia™ is the Philips brand for a unique group of products that streamline development of next-generation, connected multimedia appliances. From highly integrated, programmable system-on-chip (SoC) and companion ICs to reference designs, system software, and development tools, flexible Nexperia solutions help manufacturers meet market demands for innovative, appealing products in targeted consumer and communications markets.
- Pocket PC 2003 — Pocket PC 2003 (launched in summer 2003) is built on top of Windows CE .Net 4.2 (launched in spring 2003).
- Program stream — The Program Stream is similar to MPEG-1 Systems Multiplex. It results from combining one or more Packetised Elementary Streams (PES), which have a common time base, into a single stream. The Program Stream is designed for use in relatively error-free environments and is suitable for applications which may involve software processing. Program stream packets may be of variable and relatively great length. The MPEG-2 Program Stream is defined in the (ISO/IEC 13818-1).
- PSNR — peak signal to noise ratio.
- PSP — the ultimate portable entertainment system launched by Sony Computer Entertainment for games, videos and more.
- PVR — Personal Video Recorder. Also referred to as a DVR (digital video recorder).