Abstract: After an ACK is received from a digital video camera (DVC), a DV control program judges whether a transport time-out acquired from a wTransportTimeout field has elapsed or not. If a status change notification is received before the lapse of the transport time-out or if the status change notification cannot be received before the lapse of the transport time-out, the DV control program transmits a status request (a request for requesting status information representative of the current status of DVC) to DVC via a control pipe. With the provision of such a DV control program, it becomes possible to reliably know a change in the status of DVC to a predetermined status by using Universal Serial Bus (USB).

Abstract: A digital video apparatus having a DIF unit that generates and detects a common isochronous packet (CIP) header having a MODE field and a STATE field or a data header equivalent to the CIP header. The MODE field is a field storing values representing operation modes of the digital video apparatus, and the STATE field is a field storing values representing a playing direction, a playing speed, and the like of the digital video apparatus. In this way, the MODE field and the STATE field are provided in the CIP header or the data header equivalent to the CIP header, whereby an operation state of a transmission source apparatus can be notified to a transmission destination apparatus without using a special command.

Abstract: There is disclosed a communication system and communication protocol in which a source node and one or more destination nodes are logically connected, and a connection ID for identifying the logical connection relationship is used to control data communication between the nodes. There is also disclosed an efficient communication system and communication protocol in which an optimum time interval between a time to transmit an i-th (i being an optional integer) data and a time to transmit an (i+1)-th data can be set. There is further disclosed a communication system and communication protocol in which when the i-th data is not normally received, retry is inhibited only for a predetermined time to prevent the retry from unnecessarily occurring between a destination node slow in receiving process and a source node fast in transmitting process.

Abstract: Provided are a communication system and a communication protocol for logically connecting a source node and one or more destination nodes, and for controlling data communication between the individual nodes by employing a connection ID that is used to identity the logical connection relationship. Further, provided are a communication system and a communication protocol for correlating a connection ID with an offset address that designates in common the memory spaces included in one or more destination nodes, and for simplifying the designation of the offset address and the identification of the connection ID for data that are received. Furthermore, provided are a communication system and a communication protocol for inhibiting an increase in a delay time that occurs before data communication is initiated between a source node and a plurality of destination nodes.

Abstract: Provided are a communication system and a communication protocol for logically connecting a source node and one or more destination nodes, and for controlling data communication between the individual nodes by employing a connection ID that is used to identity the logical connection relationship.

Abstract: The source transmits a packet with a predetermined transfer rate to each destination and recognizes the maximum transfer rate to each destination according to the presence or absence of response to such packet. After the maximum transfer rate is recognized, the source generates plural packets from the information data and transfers these packets in succession at the maximum transfer rate. Thus the maximum transfer rate available between two or more electronic devices can be easily detected without complicated analysis.

Abstract: A communication system and a communication protocol are implemented by connecting the source node and one or more destination nodes logically, and controlling the data communication between each of the nodes by use of the connection ID whereby to identify such logical connection relationship.

Abstract: There is disclosed a communication system and communication protocol in which a source node and one or more destination nodes are logically connected, and a connection ID for identifying the logical connection relationship is used to control data communication between the nodes. There is also disclosed an efficient communication system and communication protocol in which an optimum time interval between a time to transmit an i-th (i being an optional integer) data and a time to transmit an (i+1)-th data can be set. There is further disclosed a communication system and communication protocol in which when the i-th data is not normally received, retry is inhibited only for a predetermined time to prevent the retry from unnecessarily occurring between a destination node slow in receiving process and a source node fast in transmitting process.

Abstract: A digital video camera detects a scalability type which is required by an external device so that a still image file having a resolution or an image quality required by the external device is sent to the external device. If the scalability type required by the external device is resolution, the digital video camera converts a picture size of a JPEG-2000 file to 1/M (M is an integer equal to or greater than 1) as instructed by a controller, and sends the converted JPEG-2000 file to the external device. If the scalability required by the external device is image quality, the digital video camera converts an image quality of a JPEG-2000 file to 1/N (N is an integer equal to or greater than 1) as instructed by a controller, and sends the converted JPEG-2000 file to the external device.

Abstract: The present invention as disclosed hereby is to provide a wireless base station by which it is possible to readily extend the wireless base station in the number thereof independently of the number of ports of the ATM transmission lines prepared on a wireless network control apparatus.

Abstract: The present invention provides an apparatus capable of retrieving a moving image file and a still picture file associated therewith efficiently. The apparatus produces a still picture file including still picture data extracted from moving image data, produces a moving image file including the moving image data and information (for example, a file name) associated with the still picture file, and records the moving image file and the still picture file on a recording medium to which random access can be effected.

Abstract: Maintenance of a wireless base station can be easily performed even when a wireless base station is installed on an electric pole. A maintenance terminal for communicating with a maintenance unit in the wireless base station through a wireless link is prepared for the wireless base station. The maintenance unit receives maintenance information and transmits the maintenance information received to the maintenance terminal, which is monitored by an operator. Also, the maintenance unit receives a control data from the maintenance terminal and controls a circuit operation of the wireless base station.

Abstract: The invention provides a reproducing apparatus comprising reproducing means for reproducing moving image data from a recording medium and control means for changing a recording state of the moving image data on the recording medium based on program information indicating the reproducing procedure of the moving image data by the reproducing means. Such configuration enables efficient utilization of the recording medium for recording data according to the program information.

Abstract: An image reproducing apparatus reproduces an encoded image signal, detects a motion vector of a block including undecodable image signal by using the reproduced image signal, and structuring an image signal for the block including the undecodable signal by using the motion vector to reproduce a visually high quality image even when the block including the undecodable image signal moves.

Abstract: A recording/reproducing apparatus for recording encoded data on a recording medium by time sequentially and independently recording normal reproduction data and specific reproduction data contained in the encoded data, the normal reproduction data and specific reproduction data including decode control information. The recording/reproducing apparatus includes a detection circuit for detecting the decode control information from reproduced data in a specific reproduction mode and in a normal reproduction mode, and a memory circuit for storing the control information detected by the detection circuit.

Abstract: An image processing apparatus having an input unit for inputting an image signal, and a signal processing unit capable of selectively executing one of enlarging and reducing processing and pixel conversion processing for the image signal.

Abstract: A construction circuit which constructs data of nondecodable blocks by using interpolation data generated by a predetermined method, a movement estimation circuit which estimates the movement of the nondecodable blocks on the basis of the movement of the blocks surrounding the nondecodable block, and an error pattern detecting circuit which detects an error state of the surrounding blocks and controls the movement estimation circuit on the basis of the error state, are provided. The construction circuit constructs nondecodable data on the basis of the result of the estimation by the movement estimation circuit. An image reproducing apparatus is provided which is capable of obtaining a reproduced image having reduced visual deterioration by estimating movement on the basis of the blocks surrounding the nondecodable block when the data of the nondecodable block is reproduced and detecting the error state of the adjacent blocks.

Abstract: Noise contained in a reproducing image signal is suppressed by performing a filtering operation on an image signal obtained by decoding data that has been coded with a unit of a block consisting of m.times.n pixels. A filter circuit having a plurality of filter characteristics suppresses noise, and a characteristics selection circuit switches the filter characteristics of the filter circuit by use of a quantizing parameter employed for coding the image signal.

Abstract: An apparatus includes a reproducing circuit for reproducing an encoded image signal from a recording medium, a decoding circuit for decoding the image signal reproduced by the reproducing circuit, a movement detection circuit for detecting a movement of an image signal which cannot be detected by the decoding circuit, and outputting a signal indicating the movement level of the undecodable signal, and a construction circuit for constructing an image signal with respect to the undecodable image signal on the basis of the output from the movement detection means. Even when an undecodable image signal is an intermediate signal between signals with and without a movement, a good reproduced image is obtained.

Abstract: The present invention relates to a semiconductor device having a semiconductor element which is sealed by a ceramic package, wherein a shielding member is provided near it from upper surface of the semiconductor element to shield the alpha-particles radiated from the package.