摘要:
Real time streaming over serial buses (20) using Internet protocol IP is becoming more and more important. With new bus technologies e.g. 10Gbit Ethernet even streaming in HD cinematography quality and uncompressed form becomes possible. In this case, however, data access management by software means is critical or simply not possible for performance reasons even if high performance microcontrollers are used where the software runs. The invention proposes for an apparatus in a network to implement hardware means (26, 27, 28) for processing the real-time critical data packets as well as software means for processing the real-time uncritical data packets and a filter algorithm respectively a de-multiplexer (25) for analyzing packet header and passing the real-time critical data packets to the hardware means (26, 27, 28) and the real-time uncritical data packets to the software means.
摘要:
The invention relates to the field of high speed data transmission between two stations (10, 20) in a network, e.g. a video source (10) such as a professional video camera and a destination station (20), such as a data recorder or a video server. In the environment of a professional video studio, the captured video data is to be transferred over the network in uncompressed fashion without any loss of information. To handle such a high data rate efficiently, it is important to hold the protocol header - means protocol overhead - short. According to the invention it is proposed to go one step further and not only hold the protocol overhead short but also to spare out the implementation of two protocol layers, thereby saving a lot of band width on the network and also a lot of implementation effort. Normally, a real-time source and destination should use the IP/UDP/RTP protocol stack. For the purpose of transmitting uncompressed video data, it was recognized, that the minimum important information from the RTP and UDP protocol layers is the RTP sequence number. The sequence number is needed for performing the re-ordering task in case of intermixed data packets on the transfer path. The invention claims to move the sequence number from the RTP protocol layer to the IPv4 protocol layer into an optional field. The implementations of the IP protocol layers need to be adapted in source (10) and destination device (20), in order to handle the sequence number calculation and extraction.
摘要:
The invention relates to a storage medium on which a set of data is stored such that at least part of the set of data can be read and processed using a handling device, one part of the set of data being stored in a read-only memory area and another part of the set of data being stored in a read/write memory area of the storage medium. At least part of the set of data is read by means of the handling device and can be processed in a first processing form and at least one other processing form, each of which can be selected by means of the handling device, independent data in the set of data, which independent data can be used both for the at least partial processing of the set of data in the first processing form and for the at least partial processing of the set of data in the at least one other processing form, being included in the first part of the set of data, which part is stored in the read-only memory area.
摘要:
The invention relates to a storage medium on which a set of data is stored such that at least part of the set of data can be read and processed using a handling device, one part of the set of data being stored in a read-only memory area and another part of the set of data being stored in a read/write memory area of the storage medium. At least part of the set of data is read by means of the handling device and can be processed in a first processing form and at least one other processing form, each of which can be selected by means of the handling device, independent data in the set of data, which independent data can be used both for the at least partial processing of the set of data in the first processing form and for the at least partial processing of the set of data in the at least one other processing form, being included in the first part of the set of data, which part is stored in the read-only memory area.
摘要:
Die Erfindung bezieht sich auf ein Speichermedium, auf welchem eine Datenmenge so gespeichert ist, daß die Datenmenge mit Hilfe einer Verwertungseinrichtung zumindest teilweise gelesen und verarbeitet werden kann, wobei ein Teil der Datenmenge in einem Nur-Lese-Speicherbereich und ein anderer Teil der Datenmenge in einem Schreib-Lese-Speicherbereich des Speichermediums gespeichert ist. Die Datenmenge kann zumindest teilweise mit Hilfe der Verwertungseinrichtung gelesen und in einer ersten und wenigstens einer weiteren, mittels der Verwertungseinrichtung jeweils auswählbaren Verarbeitungsform verarbeitet werden, wobei unabhängige Daten der Datenmenge, die sowohl für die zumindest teilweise Verarbeitung der Datenmenge in der ersten als auch für die zumindest teilweise Verarbeitung der Datenmenge in der wenigstens einen weiteren Verarbeitungsform nutzbar sind, von dem im Nur-Lese-Speicherbereich gespeicherten ersten Teil der Datenmenge umfaßt sind.