Mitsubishi Denki Kabushiki Kaisha

Sharp Kabushiki Kaisha Corporation

Matsushita Electric Industrial Co., Ltd.

Sanyo Electric Co., Ltd.

Other

Tetsuo Yamasaki

Kenji Shima

Shinji Komori

Hiroaki Terada

Hidehiro Takata

Yoshie Inaoka

Toshiyuki Tamura

Hiroaki Nishikawa

Youichiro Nishikawa

Shuji Hara

Shin-ichi Yoshida

Shunji Hine

Makoto Tanaka

Toshiya Okamoto

Souichi Miyata

Satoshi Matsumoto

Katsuhiko Asada

Fumiyasu Asai

Mitsuo Meichi

Takeshi Fukuhara

Koichi Munakata

Shin'ichi Yoshida

Yoshio Sakuta

Kinya Ogino

A file management apparatus includes a file storage portion and a manipulation portion. The file storage portion stores a plurality of files therein. Each file includes one or more data structures. Each data structure includes one or more elements. The file storage portion further identifies each file with a file identifier and identifies each data structure within the file with an internal identifier and with the number of data structures contained in the file. The position of each data element and the number of data elements within a data structure are also identified. The manipulation portion manipulates the structure of the data stored in the file storage portion by employing the file identifier, the data structure identifier, and element position.

File management apparatus permitting access to portions of a file by

A control program designing support apparatus for searching, on the basis of searching data selected by selecting means, program parts for realizing the contents of the control for controlling each controlled subject; for searching, for each of the controlled subjects, program parts peculiar to controlled subject and for realizing the contents of the control without influencing on the control of the other controlled subjects, and for hierarchically combining the searched program parts, thereby, even the control conditions of two controlled subjects are interrelated, the contents of the control peculiar to the controlled subject can be handled as one module.

Control program designing support apparatus

A program developing system includes a plurality of graphic editors representing specification definition information a user inputs in representation formats different from each other and a mutual conversion unit for converting specification definition which the user described with a graphic editor into a representation format of another graphic editor. The mutual conversion unit activates another graphic editor to allow input of specification definition by the converted representation format. The graphic editors can hierarchically represent specifications and allows specification description at an arbitrary level. The program developing system includes a parts management unit for registering description of semantically completed specification definition as parts and an execution unit for extracting executable program structure from the specification definition information represented by graphic editors and producing an executable program The executable program reserves the hierarchical structure in the specification description by the user. The execution unit executes a program at an arbitrary level and shows the execution results to the user. By execution and verification of the program at an arbitrary level, the user can know whether a program satisfying the specification is produced or not at a sub program level, which improves the program developing efficiency.

Program developing system allowing a specification definition to be

A data-driven type computer system including an input limiting section for monitoring a current number of packets existing in the circular pipeline of the system while being processed. The input limiting section is adapted to control packets from being inputted from the external unit when the current number of packets exceeds a specified threshold value which is greater than a minimum packet number existing in the circular pipeline and which allows the attainment of the highest possible throughput of the system. The input limiting section further includes a predictive control unit to preliminarily analyze a current data flow graph to be processed in the system and also to take order in rank a possible rate of increase in the quantity of packets generated by a copying operation as well as a possible rate of reduction in the prior processing by the system. While being stored once for buffering by an input buffer, variation in the current quantity of deposited packets is predicted by the predictive control unit every time when packets are entered from an external source or from the output section, so that they are prevented from being entered by the input limiting section when the current quantity of deposited packets is in excess of the preset limit of the hardware.

Data-flow processing system having an input packet limiting section for

An apparatus for manipulating a relational data base includes a unit for describing input data in a table format, a unit for describing all the operational manipulation with respect to the input data in a non-text format, and a unit for outputting data by referring to the relational data base based on the described input data and operational manipulation. The input data of a table format includes an input table and an output table. The input table includes an operational description region and the output table includes a region wherein a map relation between the respective items of the input and output table is described. The manipulation contents are described in the operation manipulation description region and the map relation description region. The operation flow is described and defined by a connection line with directiveness. The apparatus enables description of all the operational manipulation in a graphical manner in a non-text format, providing a user with data base manipulation environment with excellent understandability and operability.

Manipulating data in a relational data base having operational

A parallel processor developing system comprises a control computer, an interface portion, a processing element, a tracer portion and a display portion. The processing element comprises a data driven type processor. The interface portion stores data packets supplied from the control computer and applies the data packets to the processing element at a predetermined time interval. The tracer portion stores the data packets supplied from predetermined ports of the processing element together with time information. The display portion displays storage contents of the tracer portion.

Parallel processing development system with debugging device includes

A data transmission apparatus which is connected with a shift register of a plural stages forming a forward path of data transmission line, and a shift register of a plural stages forming a backward path of the same, and a loop-back part therebetween, and comprises bypasses between the shift register on the forward path and on the backward path to bypass the transmitted data when significant data does not exist on the loop-back part side from a stage on which the bypass is comprised and no data stays at a stage where the bypass is comprised, so that data is transmitted at high speed, and which is constructed to be able to control the bypass from external, so that testing of circuitry is easy.

Data transmission apparatus with loopback topology

A pipelined processor is provided with a plurality of control stages controlling a datapath made up of a plurality of parallel static-type data latches. The latches each include a feedback circuit, typically a field-effect transistor, which is enabled by a data latch control signal from a particular control stage. Enabling the feedback stage consumes power. A data stagnation detection circuit detects a data stagnation in the datapath, by use of handshake control signals exchanged between the control stages. The data stagnation detection circuit inhibits enablement of the feedback circuit when no data stagnation is detected, reducing power used in the latch.

Reduced power pipelined static data transfer apparatus

In a data flow machine, a program stored in advance is read out based on a tag included in a packet when the packet including first data is inputted from an external portion. Then, an instruction packet is formed by the content read out as a new tag and the first data, so that the instruction packet is outputted. Second data including the same tag as that included in the first data of the instruction packet read out from the program memory is detected. Firing processing is performed with respect to the first data and the second data as a pair and arithmetic processing is performed according to the instruction as a part of the tag included in an arithmetic packet, so that the arithmetic packet is outputted as a packet. The tag included in the packet is determined and the packet is outputted to an external portion or is inputted again to the internal portion.

Data flow machine

An improved data driven processor that utilizes queue buffers in the data path to maintain optimal dataflow.

Growing community of inventors

Hyogo, Japan

Tetsuo Yamasaki