Picture Transfer Protocol (PTP)
Picture Transfer Protocol (PTP)for Digital Still Photography Devices<br>For the purposes of this standard, digital still photography devices (DSPDs) are defined as<br>devices with persistent storage that capture a digital two-dimensional image at a discrete point<br>in time. Most DSPDs include interfaces that can be used to connect to a host computer or other<br>imaging devices, such as a printer. A number of new, high speed interface transports have<br>recently been developed, including IrDA, USB, and IEEE1394 (Firewire). This standard is<br>designed to provide requirements for communicating with DSPDs. This includes<br>communications with any type of device, including host computers, direct printers and other<br>DSPDs over a suitable transport. The requirements include standard image referencing<br>behavior, operations, responses, events, device properties, datasets, and data formats to ensure<br>interoperability. This standard also provides optional operations and formats, as well as<br>extension mechanisms.<br>This standard has been designed to appropriately support popular image formats used in digital<br>still cameras, including the EXIF and TIFF/EP formats defined in ISO 12234-1 and ISO 12234-<br>2, as well as the Design Rule for Camera File System (DCF) and the Digital Print Order Format<br>(DPOF).
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