Abstract: A music playing apparatus includes: a sound and silence determining unit determining whether or not each frame included in first and second output PCM data is a sound frame including a sample having an output level not lower than a predetermined threshold; a connection point extracting unit extracting a candidate connection point being a sample having a largest variation in a lean of a PCM waveform, from each of the determined sound frames; an end detecting unit detecting candidate connection points included in a last sound frame of the first output PCM data and an initial sound frame of the second output PCM data, respectively, as a first connection point and a second connection point; and a tune continuously-output unit connecting the first output PCM data to the second output PCM data at the first and the second connection points, and playing the connected data.

Abstract: A music playing apparatus includes: a sound and silence determining unit determining whether or not each frame included in first and second output PCM data is a sound frame including a sample having an output level not lower than a predetermined threshold; a connection point extracting unit extracting a candidate connection point being a sample having a largest variation in a lean of a PCM waveform, from each of the determined sound frames; an end detecting unit detecting candidate connection points included in a last sound frame of the first output PCM data and an initial sound frame of the second output PCM data, respectively, as a first connection point and a second connection point; and a tune continuously-output unit connecting the first output PCM data to the second output PCM data at the first and the second connection points, and playing the connected data.

Abstract: A decoder performance management portion manages performance of a plurality of decoders provided in an AV stream reproducing apparatus. A display portion changes, in accordance with an instruction from the user, an output state of an image display frame on a screen of an output portion, and notifies it to a decoder management portion. The decoder management portion controls a decoder switching portion so that decoders used for decoding AV streams acquired by a communication portion (106) and a TV receiving portion are switched as appropriate, based on the notification from the display changing portion.

Abstract: Controlling establishment of a synchronous communication link depending on how the communication band is used, the controlling being applied to a wireless communication terminal which supports both asynchronous communications and synchronous communications. A asynchronous communication link management section manages the presence of asynchronous communication links between wireless communication terminals. A synchronous communication link management section manages the presence/status of synchronous communication links between wireless communication terminals. When a request to establish a new synchronous communication link is made by a user, a link establishment determination section determines whether the currently-established asynchronous communication links can be maintained based on the presence/status of the asynchronous and synchronous communication links and the requested communication quality.

Abstract: A common key is obtained from a management device 101 by operating a bidirectional infrared remote control 105 at a location 105a via an infrared communication, the management device 101 being connected to a wireless network. The common key is transmitted to an air-conditioner 104 from bidirectional infrared remote control 105, after carrying the bidirectional infrared remote control 105 to a location 105b where it is possible that the bidirectional infrared remote control 105 and air-conditioner 104 communicate via the infrared communication.

Abstract: A user selects and sets a desired decoder switching condition from display attribute information and decoder selecting criterion information that are stored by a mode setting portion (101). A decoder performance management portion (104) manages performance of a plurality of decoders provided in an AV stream reproducing apparatus (100). A display portion (102) changes, in accordance with an instruction from the user, an output state of an image display frame on a screen of an output portion (110), and notifies it to a decoder management portion (103). The decoder management portion (103) controls a decoder switching portion (105) so that decoders used for decoding AV streams acquired by a communication portion (106) and a TV receiving portion (107) are switched as appropriate, based on the notification from the display changing portion (102).

Abstract: There is provided a method for controlling establishment of a synchronous communication link depending on how the communication band is used, the method being applicable to a wireless communication terminal which supports both asynchronous communications and synchronous communications. A asynchronous communication link management section (21) manages the presence of asynchronous communication links between wireless communication terminals. A synchronous communication link management section (22) manages the presence/status of synchronous communication links between wireless communication terminals.

Abstract: There is provided a power save processing method to be performed by a communication terminal capable of concurrently establishing communication links with a plurality of slave communication terminals, which reduces the transition time and provides an increased power save operation time. When a power save operation is performed at a plurality of slave communication terminals having asynchronous communication links established with the master communication terminal, the master communication terminal sets a communication start time and a communication duration for each communication link such that the communication slots used for the communication links are huddled together so as to span one continuous range, assuming that the communication links all have the same communication cycle. In accordance with the parameters thus set, the master communication terminal Negotiates with the plurality of slave communication terminals.

Abstract: In an object identification system, phototransmitters 100 which are assigned to at least one object send out invisible light having rectilinearity. A control device 200, which is placed near an object, instructs the phototransmitter 100 that is assigned to an object selected by a user to transmit information for uniquely identifying an object or an imaging device. In response to this instruction, the phototransmitter 100 sends out invisible light having first information superposed thereon.

Abstract: There is provided a power save processing method to be performed by a communication terminal capable of con-currently establishing communication links with a plurality of slave communication terminals, which reduces the transition time and provides an increased power save operation time. When a power save operation is performed at a plurality of slave communication terminals having asynchronous communication links established with the master communication terminal, the master communication terminal sets a communication start time and a communication duration for each communication link such that the communication slots used for the communication links are huddled together so as to span one continuous range, assuming that the communication links all have the same communication cycle. In accordance with the parameters thus set, the master communication terminal negotiates with the plurality of slave communication terminals.

Abstract: A communications device for fetching data received from some other device from a receive buffer into a memory managed by software, responding to an occurrence of a receive interrupt or a timer interrupt. A frequent occurrence of the receive interrupt or the timer interrupt leads to smooth establishment of a communications link with the other device, but results in reduction of the communications efficiency unless adopting a CPU higher in throughput or additional hardware. In the communications device, determination is made whether a communications link has been established or not. If established, the data is fetched in response to only the timer interrupt. If not, the data is fetched in response to either the receive interrupt or the timer interrupt. Consequently, the communications efficiency can be successfully improved, and the link can be smoothly established, without depending on CPU or hardware throughput.

Abstract: A data transfer apparatus includes a reception unit for receiving data from the first external device; a storage unit for storing the data received by the reception unit; an output unit for receiving data and outputting the data to a second external device; a retransmission request receiving unit for receiving a retransmission request signal from the second external device; and a transfer control unit for having a first transfer performed when the receiving unit has received data from the first external device, the first transfer transferring the data using direct memory access (DMA) directly to both the output unit and the storage unit in parallel, and having a second transfer performed when retransmission request receiving unit has received the retransmission request signal, the second transfer transferring data, which has already been stored in the storage unit by the first transfer, to the output unit.