Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Thilmee Baduge

Eiichi Muramoto

Nobutaka Kodama

Ryuuichi Yatsunami

Ettikan Kandasamy Karuppiah

Yohei Kushido

Die Liu

There is provided a projection instruction device that generates a projection image to be projected on a parcel based on a reading result of parcel identification information included in a label attached to the parcel, the device including: a processor; and a memory, in which by cooperating with the memory, the processor detects occurrence of an error, and moves the parcel to upstream in a case where the occurrence of the error is detected.

Baggage sorting system

There are an updating method of an electronic tag and an update system of the electronic tag performed by the electronic tag which displays sorting information, and a controller and an access point disposed inside a vehicle such as a truck. The controller requests an external server to transmit information on the electronic tag, and the sorting information corresponding to information on a parcel to which the electronic tag is fixed, and transmits the obtained sorting information to the access point. Further, the access point transmits the sorting information to the electronic tag, and the electronic tag updates the display of the sorting information. In this manner, the electronic tag can be updated by using an idle time during delivery.

Electronic tag updating method and electronic tag update system

A stock management method and system utilizes a mat that includes a plurality of sensors corresponding to a plurality of sensing areas, each of sensors is configured to sense an item placed on a certain sensing area. Partitions define a plurality of lanes on the mat. A controller receives sensing results of the plurality of the sensors and calculates a stock level of remained items on the mat based on the sensing results. One of the sensing areas is located in both of two lanes of the plurality of lanes.

Method and system for stock management

A communication control apparatus is provided for controlling recovery of data loss during data communication from a first communication device to a second communication device, which includes an obtaining section configured to obtain a temporal change in a communication load between the first communication device and the second communication device. The communication control apparatus also includes a change section configured to dynamically change a permitted time and an interval between transmissions on the basis of the temporal change in the communication load, the permitted time being a time that is permitted to be used by the second communication device for recovery of data loss and the interval between transmissions being an interval between transmissions of a retransmission request message. The communication control apparatus further includes a retransmission control section configured to control transmission of the retransmission request message in accordance with the interval between transmissions.

Communication control apparatus, communication control method, and computer-readable non-transitory recording medium

A communication apparatus includes a packet output unit that performs normal transmission of a normal packet and retransmission of at least one retransmission packet, a feedback receiver that receives a retransmission request that designates a retransmission packet to request retransmission, and a controller that determines that the retransmission packet for the received retransmission request is to be transmitted or is scheduled to be transmitted based on an amount of data scheduled to be transmitted for a predetermined period.

Communication apparatus, communication method, and program

A communication control apparatus includes a first obtaining section, a second obtaining section, and a control section. The first obtaining section is configured to obtain a first communication status indicating a frequency of occurrence of data loss during first data communication from a first communication device to a second communication device. The second obtaining section is configured to obtain a second communication status indicating a frequency of occurrence of data loss during second data communication from the second communication device to the first communication device. The control section is configured to control transmission processing relating to transmission from the second communication device to the first communication device in accordance with the first communication status and the second communication status. The transmission processing includes transmission processing of transmitting a retransmission request message that requests retransmission of data identical to lost data during the first data communication.

A communication terminal capable of seamless reproduction of stream data even when structure of an ALM tree changes during the reproduction of stream data includes a control unit which causes a reproduction unit to start reproduction of a stream data packet at a time point which is later than a predetermined time point by a total of all delay times corresponding to a communication path from the communication terminal to a leaf terminal. The delay times are obtained by an obtainment unit.

Communication terminal, communication control method, and program

A communication control apparatus that controls, in a second communication device, data communication from a first communication device to the second communication device, the second communication device transferring data received from the first communication device to a third communication device, the communication control apparatus including a first obtaining section that obtains a permitted reproduction period of the second communication device, this period being a period during which reproduction of data identical to lost data is permitted, a second obtaining section that obtains a first recovery period used for recovery of the lost data in the third communication device, and a control section that controls loss recovery processing in the second communication device, the lost data being recovered by the second communication device within a time difference that is a period obtained by subtracting the first recovery period from the permitted reproduction period.

A communication terminal () is one of communication terminals each having one parent terminal and zero or more child terminals. The communication terminals form an Application Layer Multicast (ALM) tree to sequentially distribute retransmission data of stream data from the parent terminal to the child terminal. The communications terminal () includes: a reproduction delay time determining unit () determining a reproduction delay time based on a longest round-trip delay time among round-trip delay times of sections between a root terminal and the communications terminal (), each of the round-trip delay times being required for transmission and reception of data through one of the sections between two neighboring terminals of the communications terminals on the ALM tree; and a reproduction control unit () reproducing the stream data received from the root terminal, with the stream data delayed by the reproduction delay time determined by the reproduction delay time determining unit ().

Communications terminal, communications method, and program and integrated circuit for controlling a reproduction delay time in distributing a stream

A transmitting terminal for used in a communication system having the transmitting terminal and receiving terminals which are connected to each other in a tree shape, each of the receiving terminals copies the data transmitted from the transmitting terminal and transfers the copied data to a receiving terminal in downstream, includes a receiving section that receives a receiver report including a packet loss rate and a round trip time, a bandwidth estimation target terminal selection section that selects a receiving terminal to be estimated on the basis of distribution tree information and a packet loss rate included in the receiver report, and a bandwidth estimation section that estimates a bandwidth of the network to control a transmission rate of data on the basis of the packet loss rate and the round trip time included in the receiver report transmitted from the selected receiving terminal.

Transmitting terminal and bandwidth estimating method

The ALM tree constructing apparatus includes a metric measuring unit for measuring an upload link bandwidth for each of terminals; and a node allocating unit allocating, to each of the terminals, at least one of (i) an upper terminal and (ii) one or more lower terminals. A first branch allocating unit allocates at least a part of the upload link bandwidth which is assigned to each of the terminals that has the lower terminal allocated, so that the part of upload link bandwidth acts as a logical first branch for distributing the data stream; and a second branch allocating unit allocates a remaining bandwidth, unused as the logical first branch, to a terminal provided in a hierarchy level below the terminal having the remaining bandwidth, so that the remaining bandwidth acts as a logical second branch for distributing reference data regarding the data stream.

Application layer multicast (ALM) tree constructing apparatus, ALM tree constructing method, program, and integrated circuit

After a delivery tree is reorganized by a local processing, all terminal devices can recognize, in a short time, a delivery route as changed. In a local one of the terminal devices, if the local terminal device is a source node and further if the load of the CPU in any one of nodes exceeds a threshold value or the available band of the circuit line between nodes exceeds a threshold value, then a delivery tree organizing unit () determines nodes that receive a packet via such nodes and reselects a delivery route of the determined nodes. A packet structure modifying unit (), if the local terminal device is the source node, modifies the header of a packet in accordance with delivery route information stored in a delivery route database (). The packet structure modifying unit () then instructs, in accordance with the description of the header, a packet replicating unit () on a number of packet replicas and on the transmission destination of the packets.

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Osaka, Japan

Thilmee Baduge