Pioneer Corporation

Pioneer Electronic Corporation

Kinya Ono

Hidemi Usuba

Kunihiro Minoshima

Sho Murakoshi

Makoto Matsumaru

Seiichi Hasebe

Shinsuke Nishimura

Myrine Maekawa

There are provided the controlling methods of the transmitting apparatus and the receiving apparatus, which cancel the flow control to execute the normal reproduction by the user who looks at the warning display or in response to the reception of the flow control cancel signal from the receiver side. Otherwise, there are provided the controlling methods of the transmitting apparatus and the receiving apparatus, which cancel the flow control reception to execute the normal reception without the buffer if the contents with the video is reproduced.

Transmitting apparatus and control method therefor and receiving apparatus and control method therefor

A communication monitoring apparatus () monitors a network () to which a plurality of devices are connected with an IEEE1394 serial bus. An obtaining unit () obtains information that concerns a communication control parameter that is determined or managed by another device on the network. A determining unit () determines whether the information that concerns a communication control parameter is compatible with the network () based on the information that concerns a communication control parameter that is obtained by the obtaining unit (). A reporting unit () reports a result of determination by the determining unit ().

Communication monitoring apparatus, communication monitoring method, communication monitoring program, and recording medium

At each node of the data transmission/reception system of the present invention on a bus of an IEEE 1394, the following operations are sequentially performed: necessary initialization at the time of bus resetting; and GUID acquisition, restoration of Broadcast-out connection, restoration of Broadcast-in connection, and restoration of Point-to-point connection according to a restoration connection queue registering an execution order of respective connection restoration operations if there is a PENDING status of each connection before a passage of a predetermined time, after the bus resetting. Moreover, the restoration of each connection is subdivided into a plurality of processing steps when necessary, and controlled to select a proper processing step.

Data transmission/ reception system, connection restoring method and information transmission/ reception apparatus

Data transmission/reception system, connection establishing method and information transmission/reception apparatus

A reception interface unit in a transmission system wherein time series data is divided into data groups and a data packet with reproduction specification time data specifying a time at which each data piece in the data groups should be reproduced, added to the data groups is transmitted on a transmission bus in a time division manner. The interface unit has a cycle timer for counting the reference time of the home device based on the reference time on the transmission bus, a unit for extracting the reproduction specification time data in the data groups from a signal received via the transmission bus and storing the reproduction specification time data in a buffer, a reception buffer for inputting and storing the data pieces in the data groups in order and reading out the data pieces in the storage order responsive to a reproduction clock, a match detector for generating a reference clock pulse if the reference time of the home device matches the reproduction specification time, and a PLL circuit being responsive to the reference clock pulse for generating a clock signal which is phase synchronized with the reference clock pulse as the reproduction clock. When the reference time on the transmission bus changes, the data stored in the buffer in the reproduction specification time data extraction unit and the data stored in the reception buffer are all deleted.

Reception interface unit in transmission system

A transmission managing apparatus included in an information transmitting system comprising a communication bus (B), an indicating device (NI), which has a transmission state memory () for storing a channel used for an information transmission executed in a time division manner on the communication bus and a transmission occupation period occupied for the information transmission, for indicating the channel and the transmission occupation period and an information processing apparatus (N) for reserving a non-used channel and a preservable period, while referring to a memory content of the transmission state memory.

Transmission managing apparatus for managing a transmission state of information

An information transmitting apparatus is included in a system for transmitting information through a bus (B), for transmitting the information onto the bus. The information transmitting apparatus is provided with: an initialization detecting device ( ) for detecting whether or not the bus is initialized; an obtaining device ( ) for obtaining post-initialization information, which is the information transmitted on the bus immediately after an initialization of the bus when the initialization of the bus is detected by the initialization detecting device; and a transmission controlling device ( ) for judging whether or not transmission information, which is the information to be transmitted onto the bus, can be transmitted in accordance with the obtained post-initialization information, and then transmitting the transmission information onto the bus if it is judged that the transmission information can be transmitted.

Information transmitting apparatus and method, information receiving apparatus and method, and information transmitting/receiving apparatus and method

A transmission interface unit in a transmission system wherein time series data is divided into data groups and a data packet comprising reproduction specification time data specifying the time at which each data piece in the data groups should be reproduced, added to the data groups is transmitted on a transmission bus in a time division manner. The reception interface unit has a cycle timer for counting the reference time of the home machine based on the reference time on the transmission bus, a generation section for generating the reproduction specification time data, an addition section for dividing the time series data into data groups, putting into packets, and adding the reproduction specification time data to the data in the packets, and a rewrite section for rewriting the reproduction specification time data. When the reference time on the transmission bus changes, the rewrite section rewrites the reproduction specification time data added to the data put into a packet before the reference time on the transmission bus changes.

Transmission interface unit in transmission system

A transmission managing apparatus included in an information transmitting system comprising a serial bus, an IRM node, which has a resource register for storing a channel used for an information transmission executed in a time division manner on the serial bus and a transmission occupation period occupied for the information transmission, for indicating the channel and the transmission occupation period and a general node for insuring a non-used channel and a preservable period, which is the transmission occupation period, that can be occupied, while referring to a memory content of the transmission state memory, to thereby carry out the information transmission. The transmission managing apparatus is provided with: a comparator for monitoring whether or not the memory content is updated; and a command generator for reporting a fact of the updating through the serial bus to the general node when updated.

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Saitama, Japan

Kinya Ono