e.Digital Corp. is a holding company, which develops and markets an intellectual property portfolio, including licensing, and enforcing its Flash-R portfolio of patents related to the use of flash memory in portable devices. It operates through two business segments: Products & Services, and Patent Licensing. The Products & Services segment consist of sale of the company's mobile entertainment device and related content services. The Patent Licensing segment consists of intellectual property revenues from the Flash-R patent portfolio. The company was founded on February 11, 1988 and is headquartered in San Diego, CA.