摘要:
An optical information recording medium for recording information by a plurality of record mark lengths, wherein the shortest mark length is at most 0.5 μm, and a crystal state is an unrecorded or erased state and an amorphous state is a recorded state, wherein the erasing is carried out by recrystallization which substantially proceeds by crystal growth from an interface between the amorphous portion or a melt portion and a peripheral crystal portion; and an optical recording method suitable therefore. The medium of the present invention has characteristics that overwriting can be made at a high speed, the jitter of mark edge is small, mark length modulation recording can be made at a high density, and the formed mark is excellent in the stability with the lapse of time.
摘要:
PoC server has an audio data receiving section 305 that receives the audio data transmitted from a cellular phone, an audio data transmitting section that transfers the audio data to individual cellular phones other than the speaker's one, of two or more cellular phones, a receiving user storage section that stores therein receiving association data indicative of the association between the cellular phone having the speaker right and the cellular phones of the receiving users, and a receiving user grasp section that causes the audio data transmitting section to transfer the audio data with designation of the cellular phone of the receiver.
摘要:
This invention is to enable transfer of a right to speak in an audio teleconference in view of usability. In this invention, a PoC server is introduced to achieve new functions, such as transfer of the right to speak, reservation to acquire the right to speak, and deprivation of the right to speak. The PoC server has a teleconference presence manager, a teleconference manager, and a teleconference audio communication manager. The right to speak is managed in a presence data storage of the teleconference presence manager. The teleconference presence manager directly manages the presence data storage, but the teleconference manager manages transfer of the right to speak. In addition, the teleconference manager manages reservation of the right to speak by a storage for a reservation list of the right to speak. The teleconference audio communication manager carries out routing of audio data. At that time, only audio data received from a user holding the right to speak is transferred.
摘要:
An optical recording method to be used for recording at a high data transfer rate length-modulated marks on a recording medium by applying a recording laser beam locally to the recording medium. The recording laser beam has a writing power Pwi, is and a bias power Pbi. A record mark has a length of nT. With respect to at least two record marks, a pulse dividing number m is at least 2, and with respect to all record marks with m being at least 2, 2.5 is smaller than or equal to n/m, in a case where plural different record mark lengths are to be respectively formed by the same pulse dividing number m.
摘要翻译:一种光记录方法,用于通过将记录激光束局部地施加到记录介质上,以高数据传输速率在记录介质上记录长度调制标记。 记录激光束具有写入功率Pw和偏置功率Pb i i i。 记录标记的长度为nT。 对于至少两个记录标记,脉冲分割数m至少为2,并且对于具有至少2的所有记录标记,2.5为小于或等于n / m,在多个不同的情况下 记录标记长度分别由相同的脉冲分割数m形成。
摘要:
In a rewritable compact disc having a wobble groove on a substrate, crystal and amorphous states of a phase-change recording layer are an unrecorded/erased state and a recorded state, respectively. When the recording layer is exposed to recording light, amorphous marks assuming the recorded state are formed. At any of 2-, 4- and 8-times velocities with respect to a reference velocity (1-times velocity) whose linear velocity is 1.2-1.4 m/s, modulation m11 of a recorded signal when the recording light of approximately 780 nm in wavelength irradiates the recording layer via an optical system with NA=0.5 or 0.55 is 60-80%. A topmost level Rtop of reflectivity of the eye pattern of the recorded signal during retrieving at the 1-times velocity is 15-25%, and a jitter of the individual length of marks and inter-mark spaces during retrieving at 1-times velocity is 35 ns or less. Recording at 8-times or higher velocities is thereby realized without any risk of impairing the read-compatibility with the conventional CD-RW specifications at least at 4-times velocity.
摘要:
It is an object of the present invention to relieve the burden on a watcher that uses a presence system to subscribe to the presence information of people and objects. For example, an attribute is a product name, and products A, B, C have the identical attribute value “DVDRecorder.” The server generates aggregate presence information, which includes the presence information of the products A, B, C (corresponds to the providers), and sends a notification of such to a watcher W (corresponds to the notification recipient) of the presence information of the products A, B, C. The watcher W collectively receives the presence information for every product name, and the watcher W is therefore relieved of the burden of classifying the presence information for every product name.
摘要:
The object is to enable suppression of an excessive number of changes in assignment of a server in charge of communication in response to movement of a terminal. A position-information acquisition unit in a computer acquires information on the position of a mobile terminal as a candidate for a destination of information provision. Then, a zone determination unit determines whether or not the mobile terminal is in a coverage zone or a margin zone on the basis of the information on the position. An information provision unit starts the information provision to the mobile terminal when the mobile terminal enters the coverage zone, and ends the information provision to the mobile terminal when the mobile terminal goes out of the margin zone.
摘要:
A data output apparatus accumulates received sound data in an accumulating unit (jitter buffer), and reproduces sound based on the accumulated sound data. Then, for a predetermined period of time from the time point at which reception of data starts, the data output apparatus restricts or prohibits discarding of data based on an upper accumulation limit amount as a basis for discarding the accumulated data. Moreover, prior to starting reception of sound data after a transfer of a transmission right, dummy data such as soundless data is accumulated in the accumulating unit. Further, the set values of the upper accumulation limit amount, etc. optimized in the previous communication are stored, and the settings stored in association with a transmitting source apparatus are set as the upper accumulation limit amount, etc. after the transfer of the transmission right.
摘要:
To provide an optical recording method to be used for recording at a high data transfer rate where the reference clock frequency is at least about 200 MHz and a linear velocity is about 40 m/sec. When recording mark length-modulated information is to be recorded on a recording medium by applying a recording laser beam locally to the recording medium, in order to form one record mark length of nT, m pieces of recording pulses αiT (1≦i≦m) and m pieces of off-pulses βiT (1≦i≦m), represented by: α1T, β1T, α2T, β2T, . . . , α1T, β1T, . . . , αmT, βmT (where m is a natural number representing a pulse dividing number, αi (1≦i≦m) is a real number of larger than 0, βi (1≦i≦m-1) is a real number of larger than 0, and βm is a real number of at least 0), are used, and a recording laser beam having a writing power Pwi is applied within a time of αiT (1≦i≦m), a recording laser beam having a bias power Pbi of Pbi
摘要:
An optical information recording medium for recording information by a plurality of record mark lengths, wherein the shortest mark length is at most 0.5 μm, and a crystal state is an unrecorded or erased state and an amorphous state is a recorded state, wherein the erasing is carried out by recrystallization which substantially proceeds by crystal growth from an interface between the amorphous portion or a melt portion and a peripheral crystal portion; and an optical recording method suitable therefore. The medium of the present invention has characteristics that overwriting can be made at a high speed, the jitter of mark edge is small, mark length modulation recording can be made at a high density, and the formed mark is excellent in the stability with the lapse of time.