Abstract: A time control apparatus provided in a slave machine and synchronizing time information with time information of a master machine connected over a network includes: calculation units respectively calculating time difference candidates of the slave machine with respect to the master machine and network delays indicative of an average of times necessary for communication of first and second messages over the network based on transmission and reception times of the first messages which are transmitted from the master machine and received using the slave machine and transmission and reception times of the second messages which are transmitted from the slave machine and received using the master machine; a selection unit selecting one of the calculated time difference candidates as a time difference based on the calculated network delays; and an adjustment unit adjusting the time information of the slave machine based on the selected time difference.

Abstract: The present disclosure relates to a frequency difference detection device that can synchronize oscillation frequency with a master device in a network with high precision, and also relates to a frequency difference detection method and a program. A frequency difference detection device, as one aspect of the present disclosure is a frequency difference detection device that detects a difference in oscillation frequency between a master device and a slave device connected to each other via a network.

Abstract: The present disclosure relates to a time control device, a time control method, and a program that can synchronize time information with a master device in a network with high precision.

Abstract: The present disclosure relates to a time control device, a time control method, and a program that can synchronize time information with a master device in a network with high precision.

Abstract: Disclosed herein is a communication apparatus, including: a transmission policy holding section configured to hold transmission policies each corresponding to a conversation; and a transmitted frame control section configured to modify transmitted frames of the conversation in accordance with the corresponding transmission policy held by the transmission policy holding section.

Abstract: A communication apparatus includes a data processing unit and a communication unit. The data processing unit performs a clock synchronous process between the communication apparatus and a communication correspondent apparatus. The communication unit performs communication with the communication correspondent apparatus. The data processing unit compares, when the clock synchronous process is performed, an offset window that defines a permissible delay time range of a packet applied to the synchronous process and a network delay time of the synchronous packet, selects the synchronous packet having the network delay time within the offset window, and applies phase offset information calculated from the synchronous packet, to perform phase control, and decreases a width of a current offset window when the network delay time of the synchronous packet is within the current offset window and increases the current offset window width when the network delay time is outside of the current offset window.

Abstract: A communication apparatus includes: a higher-layer processing unit that starts up a retransmission process of a corresponding packet in accordance with reception of a Duplicate ACK packet; and a lower-layer processing unit that collects a plurality of the Duplicate ACKs received through a network as one ACK and sends the one ACK to a higher layer.

Abstract: A decider decides whether a predetermined period of time has elapsed after a last one of first packets was received and a timeout thereby occurs. A second packet having a size of data greater than a size of data placed in each of the first packets is produced from a number of the first packets, the number being a first threshold value. Another decider decides, when the predetermined period of time has elapsed, whether a number of times by which the predetermined period of time has successively elapsed exceeds a second threshold value which is a permitted number of times of the timeout. A processing unit sets, when the second threshold value is exceeded by the number of times that the predetermined period of time has successively elapsed, the first threshold value so as to decrement the number of the first packets to be used to produce the second packet.

Abstract: A communication apparatus includes: a higher-layer processing unit that starts up a retransmission process of a corresponding packet in accordance with reception of a Duplicate ACK packet; and a lower-layer processing unit that collects a plurality of the Duplicate ACKs received through a network as one ACK and sends the one ACK to a higher layer.

Abstract: Disclosed herein is a communication apparatus, including: a transmission policy holding section configured to hold transmission policies each corresponding to a conversation; and a transmitted frame control section configured to modify transmitted frames of the conversation in accordance with the corresponding transmission policy held by the transmission policy holding section.

Abstract: In recording, reproducing, and recording/reproducing apparatuses and methods thereof, while endlessly-recording first data, desired second data can be easily stored. The present invention comprises recording means for endlessly-recording the first data in a recording medium, input means for inputting a start and end point of the second data out of the first data, and control means, when the start point and end point are designated, for controlling the recording means so as to endlessly-record the first data while avoiding a recording region for the second data. Thereby, the second data can be stored without replacing the recording medium even if the second data is endlessly-recorded. In addition, when the start point and end point of the desired second data out of the first data are designated, the start point and end point are recorded, and then the first data is endlessly-recorded based on the recorded start point and end point while avoiding the recording region for the second data.

Abstract: Disclosed herein is an information processing apparatus including, one or more modules that are interconnected via a system bus, wherein each of one or more the modules includes, a functional device, which conforms to a local interface that differs from an interface for the system bus, and performs a predetermined function, and an interface device, which is connected to the functional device via a local bus conforming to the local interface, and connected to another module via the system bus, wherein, when information in a first format conforming to the local interface is supplied from the functional device via the local bus, the interface device converts the information from the first format to a second format conforming to the interface for the system bus and supplies the converted information to the another module via the system bus, and wherein, when information in the second format is supplied from the another module via the system bus, the interface device converts the information from the second format

Abstract: A recording unit for recording image information and/or audio information onto a replaceable tape-shaped recording medium, filing units for filing the image information and/or the audio information which have been written onto the replaceable tape-shaped recording medium by the recording unit, and a file information writing/reading unit for writing/reading, in a non-contact state, file information of file into a random accessible memory unit provided in a manner associated with the replaceable tape-shaped recording medium are provided to thereby realize an information processing apparatus.

Abstract: A computer capable of performing communications processing using a protocol at high speed in simple and low cost configuration is provided. After an SD-RAM controller stores AV data inputted via an AV interface in an AV buffer circuit, a packet processing unit, for example, generates jumbo packet data of 32 KB. A PCI bus interface outputs data required for transmitting processing of the jumbo packet data to a CPU, and the CPU generates header data. A packet processing unit, according to the header data, splits the jumbo packet data and generates Ethernet packet data of a maximum of 1518 byte. The SD-RAM controller transmits the applicable data from a MAC circuit.

Abstract: An information recording/playback apparatus capable of recording and playing back data on and from a magnetic tape through a network. A monitoring unit 15 regularly monitors the state of the data stored in a temporary storage unit 14. A first controlling unit 13 controls data transfer between a tape magnetic-storage medium 11 and the temporary storage unit 14 based on a result a of monitoring. A second controlling unit 16 controls information transfer between the temporary storage unit 14 and a network 21 based on the result a of monitoring. The first controlling unit 13 and the second controlling unit 16 do not interfere with each other and they independently operate asynchronously with each other. This asynchronous structure permits asynchronous data transfer to other apparatuses through an interface unit 17 and the network 21. The present invention can be applied to a digital VTR.

Abstract: Disclosed herein is an information processing apparatus including, one or more modules that are interconnected via a system bus, wherein each of one or more the modules includes, a functional device, which conforms to a local interface that differs from an interface for the system bus, and performs a predetermined function, and an interface device, which is connected to the functional device via a local bus conforming to the local interface, and connected to another module via the system bus, wherein, when information in a first format conforming to the local interface is supplied from the functional device via the local bus, the interface device converts the information from the first format to a second format conforming to the interface for the system bus and supplies the converted information to the another module via the system bus, and wherein, when information in the second format is supplied from the another module via the system bus, the interface device converts the information from the second format

Abstract: An information processing apparatus which functions, in a network environment wherein data is communicated between a server and a client, as an end point on the server side or the client side, includes a setter and a controller. The setter is configured to set at least a permissible maximum latency as a parameter representative of a nature of the network which is to be used on the client side. The controller is configured to perform real time control of data of an object of transmission or reception based on the parameter set by the setter to control a transmission or reception process of the data.

Abstract: A reception apparatus for receiving first packets, including: a first decider configured to decide whether or not the number of the first packets received in response to a request from an application layer exceeds a first threshold value which is the number of the first packets when a second packet having a size of data greater than the size of data placed in each of the first packets is produced from the first packets; a second decider configured to decide, when it is decided by said first decider that the first threshold value is not exceeded, whether or not a predetermined period of time elapses after the last first packet is received until a timeout occurs; a third decider configured to decide, when it is decided by said second decider that the predetermined period of time elapses, whether or not the number of times by which the predetermined period of time elapses successively exceeds a second threshold value which is a permitted number of times of the timeout; and a first setter configured to set, when

Abstract: In recording, reproducing, and recording/reproducing apparatuses and methods thereof, while endlessly-recording first data, desired second data can be easily stored. The apparatuses include a recording mechanism for endlessly-recording the first data in a recording medium, an input for inputting a start and end point of the second data out of the first data, and a controller, when the start point and end point are designated, for controlling the recording mechanism so as to endlessly-record the first data while avoiding a recording region for the second data. Thereby, the second data can be stored without replacing the recording medium even if the second data is endlessly-recorded. In addition, when the start point and end point of the desired second data out of the first data are designated, the start point and end point are recorded, and then the first data is endlessly-recorded based on the recorded start point and end point while avoiding the recording region for the second data.

Abstract: A semiconductor device has a p-type substrate, a low-concentration n-type region formed in the p-type substrate, a first high-concentration p-type region formed in the low-concentration n-type region and connected to a first electrode, a first high-concentration n-type region formed in the low-concentration n-type region and connected via a resistive element to the first electrode, a low-concentration p-type region formed contiguously with the first high-concentration n-type region, a second high-concentration n-type region and a second high-concentration p-type region formed in the p-type substrate and connected to a second electrode, and an element separator portion formed between the low-concentration p-type region and the second high-concentration n-type region. This makes it possible to control the switching characteristic of the electrostatic protection circuit with high accuracy and thus to cope with the thinning of the gate oxide film protected by the protection circuit.