Abstract: Disclosed herein is a radio frequency shield device that includes, an outer cover having one or more displacement protrusions extending from an outer cover bottom surface and one or more cover fasteners, an inner cover positioned inside the outer cover, wherein at least a portion of the inner cover is deflected downward by the displacement protrusions, and a plurality of fence walls having one or more fence fasteners for interlocking with the cover fasteners, wherein the inner cover is positioned at least partially over the fence walls to form at least one of a primary seal and secondary seal.

Abstract: Disclosed herein is a radio frequency shield device that includes, an outer cover having one or more displacement protrusions extending from an outer cover bottom surface and one or more cover fasteners, an inner cover positioned inside the outer cover, wherein at least a portion of the inner cover is deflected downward by the displacement protrusions, and a plurality of fence walls having one or more fence fasteners for interlocking with the cover fasteners, wherein the inner cover is positioned at least partially over the fence walls to form at least one of a primary seal and secondary seal.

Abstract: A method and apparatus for debugging a hierarchically structure page description language document. As a hierarchically structured page description language is being processed, a picture/pageset stack is used to keep track of the different hierarchical levels of the document. A prologue data structure is used to keep track of various system parameters at each hierarchical level and a current context of interpretation data structure is used to keep track of system parameters as a content portion of the document is being processed. During the debugging operations, system function debugging commands can be entered which pertain to setting and deleting break points and processing of the document by the system and debugger. There are also display function debugging commands which allow a user to display any of the system parameters using the system information stored in the data structures used by the system.

Abstract: A method and apparatus for processing the hierarchical structure of page description language. Each structure level of the document causes the creation of a prologue data structure which is used to keep track of system parameters. As content portions of the document are being processed, a current context of interpretation data structure is created which is also used to store parameters of the system. The prologue data structure and the current context of interpretation data structure contain pointers relating to context dictionaries, a user dictionary, and a state variable table. The dictionaries are kept track of by using a context stack made up by linked list data structures. It is possible to modify the search order of the context dictionaries by structure or content portions of the document and the linked list data structures keep track of whether the dictionaries were created using the content portions or structure portions.

Abstract: A method and apparatus for handling various types of dictionaries while processing a document which is written in a hierarchically structured page description language. As each hierarchical level of the document is processed, a data structure is created for keeping track of system parameters, This data structure contains pointers to dictionary link data structures which have pointers to different dictionaries. As the document is being processed, the pointers in the data structure used for keeping track of the system parameters and the pointers to the dictionary link data structures are modified to so that the dictionaries can be accurately searched for the desired key to determine the key's corresponding value.

Abstract: A method and apparatus for processing resources in a hierarchically structured page description language. The resource must first be defined before it can be used. The definition of a resource is contained in a resource specification. The resource is defined by creating a linked list resource definition data structure which contains a reference to a resource specification and a reference to a subsequent resource definition data structure. Alternatively, the resource can be defined by downloading a predefined resource from non-volatile memory and reference is made to the downloaded resource specification in a AVAILABLE RESOURCE TABLE. It is also possible for default resources of the system to be found in the AVAILABLE RESOURCE TABLE. After a resource is defined, it must be declared. The declaration process uses a resource declaration data structure which has a reference to a defined resource specification and a reference to a subsequent resource declaration data structure.

Abstract: A method and apparatus for processing state variables in a hierarchically structured page description language such as SPDL. Each structure level of a document causes the creation of a prologue data structure which is used to keep track of system parameters. As content portions (tokensequence elements) of the document are being processed, a current context of interpretation (CCI) data structure is created which is also used to store parameters of the system. When only a portion of a document is processed for printing or other presentation, it is not necessary to process the entire document which is before the desired portion. Both the prologue data structure and the CCI contain pointers which point to data structures such as a state variable table which contains the values of the state variables.