Abstract: The present disclosure relates to an electronic device and an airflow control method that are capable of prevent adhesion of a smoke constituent to an optical component such as a lens. An electronic device according to one aspect of the present disclosure includes: a heat release fan configured to release heat generated inside a housing; an optical component installed at a position corresponding to an opening formed in the housing; a smoke detection unit configured to detect smoke; and a control unit configured to control, in a case where smoke is detected by the smoke detection unit, the heat release fan to discharge air through the opening at which the optical component is installed. The present disclosure is applicable to, for example, a ceiling light including a built-in projector.

Abstract: There is provided an information processing device comprising an NV memory that is a non-volatile recording medium, a file system unit that manages one or more files stored in the NV memory, and a memory management unit that secures one or more areas of the NV memory that are ready to be used by the file system unit to store a file, and allocates the secured one or more areas to a running process in response to a request from the running process. According to the information processing device, when the NV memory is used both as a main memory and a storage, inconsistencies in the file system caused by an abnormal termination of the system are reduced.

Abstract: A processing unit processes data stored in a processing region. A processing region is a region in a storage region, used by processing unit for processing. A management unit manages file data stored as a file in storage device. Management unit associates an address of a storage region of storage device in which file data is stored with the file name of file data thereof. When processing unit processes file data, management unit assigns an address that is associated with the file name of the file data and stored as an address representing a processing region.

Abstract: A processing unit processes data stored in a processing region. A processing region is a region in a storage region, used by processing unit for processing. A management unit manages file data stored as a file in storage device. Management unit associates an address of a storage region of storage device in which file data is stored with the file name of file data thereof. When processing unit processes file data, management unit assigns an address that is associated with the file name of the file data and stored as an address representing a processing region.

Abstract: An information processing device including an NV memory that is a non-volatile recording medium, a file system unit that manages one or more files stored in the NV memory, and a memory management unit that allocates one or more areas of the NV memory, that are ready to be used by the file system unit to store a file, to a running process in response to a request from the running process. The file system unit accesses areas of the NV memory storing unused area management data sets for managing unused areas of the NV memory. The unused area management data sets have data structure that is suitable for characteristic features of the NV memory. When the NV memory is used both as a main memory and a storage, time required for allocating memory blocks to a process is shortened.

Abstract: There is provided an information processing device comprising an NV memory that is a non-volatile recording medium, a file system unit that manages one or more files stored in the NV memory, and a memory management unit that secures one or more areas of the NV memory that are ready to be used by the file system unit to store a file, and allocates the secured one or more areas to a running process in response to a request from the running process. According to the information processing device, when the NV memory is used both as a main memory and a storage, inconsistencies in the file system caused by an abnormal termination of the system are reduced.

Abstract: The present invention provides a novel and practical method for treating a perchlorate ion-containing liquid. The perchlorate ion-containing liquid is brought into contact with a weak base anion exchange resin, so that perchlorate ions are adsorbed to the weak base anion exchange resin, and then an acid is brought into contact with the resin, so as to remove the perchlorate ions from the weak base anion exchange resin to which the perchlorate ions are adsorbed. This makes it possible to repeatedly use the weak base anion exchange resin.

Abstract: The present invention relates to a communication apparatus, communication control method and program adapted for carrying out wireless LAN communications without imposing a troublesome feeling upon the user. A television receiver carries out communications with another apparatus through a predetermined network. Meanwhile, the television receiver, when inserted by a memory card 13 in its card slot 10, reads wireless LAN information out of the memory card 13 and sets the wireless LAN information to the television receiver. The present invention is applicable to a television receiver or the like having a wireless LAN function, for example.

Abstract: An exhaust gas filter comprises an outer tube, a plurality of center-closing filter units each having an isolation plate; and a plurality of center-opening filter units having an annular isolation plate, two kinds of filter units being arranged alternately in the outer tube. The isolation plate and annular isolation plate are enclosed by flammable fibers. When a contaminated gas goes through the flammable fibers, it can be filtrated.

Abstract: An exhaust gas filter comprises an outer tube, a plurality of center-closing filter units each having an isolation plate; and a plurality of center-opening filter units having an annular isolation plate, two kinds of filter units being arranged alternately in the outer tube. The isolation plate and annular isolation plate are enclosed by flammable fibers. When a contaminated gas goes through the flammable fibers, it can be filtrated.

Abstract: The present invention relates to a communication apparatus, communication control method and program adapted for carrying out wireless LAN communications without imposing a troublesome feeling upon the user. A television receiver carries out communications with another apparatus through a predetermined network. Meanwhile, the television receiver, when inserted by a memory card 13 in its card slot 10, reads wireless LAN information out of the memory card 13 and sets the wireless LAN information to the television receiver. The present invention is applicable to a television receiver or the like having a wireless LAN function, for example.

Abstract: In a speech coding method of the present invention, initially, a plurality of samples of speech data are analyzed by a linear prediction analysis and thereby prediction coefficients are calculated. Then, the prediction coefficients are quantized, and the quantized prediction coefficients are set in a synthesis filter. Moreover, a pitch period vector is selected from an adaptive codebook in which a plurality of pitch period vectors are stored, and the selected pitch period vector is multiplied by a first gain which is obtained, at the same time, with a second gain. In addition, a noise waveform vector is selected from a random codebook in which a plurality of the noise waveform vectors are stored, and is multiplied by a predicted gain and the second gain. Then, the speech vector is synthesized by exciting the synthesis filter with the pitch period vector multiplied by the first gain, and with the noise waveform vector multiplied by the predicted gain and the second gain.

Abstract: In a CELP coding scheme, p-order LPC coefficients of an input signal are transformed into n-order LPC cepctrum coefficients c.sub.j (S.sub.2), which are modified into n-order modified LPC cepstrum coefficients c.sub.j ' (S.sub.3). Log power spectral envelopes of the input signal and a masking function suited thereto are calculated (FIGS. 3B, C), then they are subjected to inverse Fourier transform to obtain n-order LPC cepstrum coefficients, respectively, (FIGS. 3D, E), then the relationship between corresponding orders of the LPC cepstrum coefficients is calculated, and the modification in step S.sub.3 is carried out on the basis of the relationship. The modified coefficients c.sub.j are inversely transformed by the method of least squares into m-order LPC coefficients for use as filter coefficients of a perceptual weighting filter. This concept is applicable to a postfilter as well.

Abstract: An input acoustic signal is subjected to modified discrete cosine transform processing to obtain its spectrum characteristics. Linear prediction coefficients are derived from the input acoustic signal in a linear prediction coding analysis part, and the prediction coefficients are subjected to Fourier transform in a spectrum envelope calculation part to obtain the envelope of the spectrum characteristics of the input acoustic signal. In a normalization part the spectrum characteristics are normalized by the envelope thereof to obtain residual coefficients. Another normalization part normalizes the residual coefficients by a residual-coefficients envelope predicted in a residual-coefficients envelope calculation part, thereby obtaining fine structure coefficients, which are vector-quantized in a quantization part. A de-normalization part de-normalizes the quantized fine structure coefficients.

Abstract: An excitation vector of the previous frame stored in an adaptive codebook is cut out with a selected pitch period. The excitation vector thus cut out is repeated until one frame is formed, by which a periodic component codevector is generated. An optimum pitch period is searched for so that distortion of a reconstructed speech obtained by exciting a linear predictive synthesis filter with the periodic component codevector is minimized. Thereafter, a random codevector selected from a random codebook is cut out with the optimum pitch period and is repeated until one frame is formed, by which a repetitious random codevector is generated. The random codebook is searched for a random codevector which minimizes the distortion of the reconstructed speech which is provided by exciting the synthesis filter with the repetitious random codevector.