Sony Corporation

Sony Semiconductor Solutions Corporation

Yasuyuki Chaki

Yoshihide Shimpuku

Hiroyuki Ino

Toshiyuki Nakagawa

Shinji Negishi

Noriaki Ooishi

Michito Ishii

Kazuhiro Ishigaya

Takehito Watanabe

Norihito Mihota

Mikita Yasuda

Shinji Miyamori

Kazunori Yasuda

Masao Tanaka

Toshiharu Tsuchiya

Tsuyoshi Kimura

Tadayuki Ishikawa

Takatsuna Sasaki

An image processing apparatus and an image processing method are provided. The image processing apparatus includes: a division control unit that, on the basis of a first boundary dividing an image into a plurality of partial areas, further sets a second boundary and divides each of the partial areas into a plurality of slices; and an encoding unit that encodes the image on the basis of the first boundary and the second boundary, in which the division control unit sets the second boundary such that the plurality of slices included in the partial area has unequal numbers of lines, and the slice situated at the bottom among the plurality of slices included in the partial area is not a slice having the most lines in the partial area.

Image processing apparatus and image processing method

The present technology relates to a reception device, data processing method, and a program which make it possible to smoothly switch the output of data in a case where data transmitted via different transmission paths is received to be output. A reception device includes: a reception unit that receives a plurality of pieces of data separately transmitted via different transmission paths and given time stamps corresponding to each other; an output control unit that selects data to be output from among the plurality of pieces of data and controls a timing of outputting the selected data on the basis of the time stamp of a piece of data having a latest time stamp among the plurality of pieces of data; and an accumulation unit that accumulates at least the plurality of pieces of data given the time stamps later than the time stamp of the data that has been output from among the received plurality of pieces of data. The present technology can be applied to, for example, a reception device of a broadcasting system using MMT.

Reception device, data processing method, and program

The present technology relates to a recording apparatus, a recording method, and a program capable of avoiding a buffer overflow at the time of reproduction. Each packet is separated from a packet string, and information indicating an arrival timing of each packet is output. The packet is divided into divided packets having a size which does not cause a buffer overflow, and a packet arrival time of each divided packet is embedded in a header of the divided packet. The present technology is applied to the recording apparatus.

Recording apparatus, recording method, and program

The present disclosure relates to a receiving apparatus and a method therefor which are capable of decreasing a processing load and efficiently improving reproduction quality. A packet accumulating unit stores packets and packet type, and another packet information. A statistics information accumulating unit accumulates statistics information (e.g., an error ratio, performance (processing condition) of the receiving apparatus, a condition of a stream, and a condition of a buffer). A packet-correcting-method selecting unit selects a packet correcting method from a packet correction table generated in accordance with the packet information and packet identification/statistics information from the statistics information accumulating unit, and supplies a packet to be corrected to a packet correcting unit in a case where the packet in process is determined to be a target of correction. For example, the present disclosure can be applied to a communication system that transmits and receives data.

Receiving apparatus and method therefor

A device, method, and program for data stream reproduction are disclosed. In one example, a transmission device includes a multiplexer that generates a data stream by multiplexing a data packet and a control information packet separately from each other, the data packet being a packet including reproduction data as the current data to be reproduced, the control information packet being a packet including control information to be used in reproducing the reproduction data. The multiplexer multiplexes a first packet in a position behind the position located a predetermined first number of packets before a second packet among multiplexing-enabled positions in which the control information packet can be multiplexed in the data stream, the first packet being the control information packet including the control information corresponding to a predetermined processing unit of the reproduction data, the second packet being the data packet including the processing unit.

Data processing device, data processing method, and program

A picture outputting apparatus for producing a display picture by synthesis and outputting the synthesized picture to a display unit. The picture outputting apparatus includes a decoding unitfor decoding input encoded moving picture data, a data processing unitfor generating the first display area information for displaying a first display picture represented by the decoded moving picture data to an optional size in a specified location on the display unit, generating a second display picture of a picture format suited to the display unit based on the picture data contained in the input data, generating the second display area information for displaying the second display picture to an optional size in a specified location on the display unit, generating synthesizing parameters, determining the state of synthesis, in synthesizing a display picture, based on the first display area information and the second display area information, for adding the synthesizing parameter to the second display picture, and a synthesizing outputting unit for synthesizing the first and second display pictures, based on the synthesizing parameters, to output a display picture resulting from the synthesis to the display unit.

Picture outputting apparatus

The present invention relates to a transmission device and a transmission method which can efficiently perform transmission of audio signals with infrared ray and suppress the complication of data processing in modulation and demodulation processes to the minimum level. Audio signals reproduced by a digital audio instrument are transmitted to and recorded into a digital audio recorder through an audio signal transmission device by infrared ray. In the digital audio recorder, the recorded audio signals are immediately reproduced, transmitted and output to a digital audio instrument through an audio transmission device with infrared ray. In the transmitters, a transmission channel clock having the frequency of 5/4-times the data clock thereof from the audio signals, and modulated signals obtained by modulating the audio signals are output at the timing of the transmission channel clock.

Transmission device and transmission method

The transmitter QPSK-modulates the audio data, generates a transmission channel clock having a frequency 5/4 times the data clock based on the audio data, and outputs the modulated signal resulted from QPSK-modulation at the timing of the transmission channel clock. The infrared emitter emits infrared-rays based on the modulated signal. Digital data is thus efficiently transmitted by way of infrared-rays with suppressed complexity of data processing for modulation and demodulation.

Transmission apparatus, sending apparatus, and receiving apparatus, and

An audio signal transmitting apparatus including, an audio transmission signal generating unit for adding an error correction signal to a digital audio signal and encoding and interleaving the result to generate an audio transmission signal; a continuous signal generating unit which generates a continuous signal by repeating the digital control signal to be used for the reproduction of the digital audio transmission signal a predetermined number of times; a multiplexing unit for multiplexing the audio transmission signal and the continuous signal to generate a multiplexed signal; a modulated signal generating unit for modulating the multiplexed signal by a predetermined digital modulation method to generate a modulated signal within a predetermined frequency band; and an optical signal transmitting unit for converting the modulated signal to an optical transmission signal and transmitting the same. Also, an audio signal receiving apparatus for reproducing a digital audio signal and a digital control signal from an optical transmission signal generated by the audio signal transmitting apparatus and an audio signal transmitting and receiving system using the same.

Audio signal transmitting apparatus audio signal receiving apparatus and

A synchronization signal detector for detecting synchronization signals or frame synchronization signals recorded on a recording medium includes a binary-valued signal detector for translating RF signals into binary-valued signals, an edge detection circuit for extracting edge portions of the binary-valued signals, a counter for counting the number of clocks generated by an external source between the edge portions, a number of latch circuits for holding successive clock count values between the edge portions and for successively shifting the clock values held by them, value coincidence circuits for comparing the numbers of clocks between transitions of the synchronization patterns and the clock count values held by the counter and the latch circuits and for outputting a signal indicating a coincidence in case of complete coincidence between the numbers of clocks and the clock count values and an AND circuit for taking a logical sum of the outputs of the value coincidence circuits and the edge detector for producing a detection output of the synchronization signal. The synchronization signal may be detected efficiently with a short delay time and by a simple circuit construction even if the synchronization signal pattern is of a longer length. A demodulator utilizing the synchronization signal detector is also disclosed.

Method and apparatus for detecting synchronizing signals by latching

A digital signal transmitting apparatus, a digital signal transmitting method, and a digital signal transmitter-receiver, for transmitting a digital signal within a specified frequency band by using an infrared transmission method. An infrared signal within a specified frequency band can be obtained by using a QPSK modulation circuit 13 having roll-off filters 132 and 133 and applying roll-off filtering and QPSK modulation to an inputted digital audio signal, and thereby generating a digital modulated signal S2 whose bandwidth is narrowed and driving an infrared emitter based on the modulated digital audio signal S2.

Digital signal transmission apparatus, digital signal transmission

A synchronization detector includes a NRZI circuit for extracting edge portions of RF signals detected as binary-valued signals to form a pulse train, a counter for counting the number of channel clocks in the distance between transitions represented by the edge portions, a latch circuit operated responsive to pulses from the NRZI circuit for holding a number of previously counted channel clocks immediately preceding a current count of channel clocks, and AND gates and an OR gate for detecting synchronization signals when the combination of the channel clocks from the counter and the latch circuit is the combination of the maximum distance between transitions Tmax and Tmax-kT (k=1 or 2) of a (d, k; m, n; r) modulation code. Synchronization signals may be detected promptly even if the frame structure is increased in size to enable restoration of synchronization to be expedited when frame structure synchronization is not in order. A demodulator utilizing the synchronization signal detector is also disclosed.

Synchronization signal detector, synchronization signal detecting method

In a data modulation method, m-bit data is modulated to n-bit data (n.gtoreq.m) having fewer direct current and low frequency components. A dispersion of the digital sum variation of code weights can be reduced, a direct current component is reduced and an error rate can be further reduced by selecting a plurality of modulation tables constituting the combination of one or more sub-groups of modulation data obtained by dividing a group of modulation data by a code weight having the same value based on the digital sum variation of the code weights accumulated until a time at which m-bit data is converted to n-bit code and converting next m-bit data continuously to present m-bit data to n-bit code by using the modulation tables.

Data modulation method

A method of modulating digital data to a variable-length code having parameters d, k, m, n, and r for recording information on and reproducing the same from an optical disc. The optimal range of a minimum run length d corresponding to the minimum number of successive same symbols is determined by a procedure which includes a first step to determine the minimum S/N required for obtaining a desired error rate from the relationship between a bit error rate and the S/N when d=0; a second step to obtain the relationship between a change of the numerical value d and that of the S/N by calculating, on the basis of the required minimum S/N obtained at the first step, the S/N loss caused due to the change of the numerical value d; and a third step to determine, from the relationship between the numerical value d and the S/N, the range of the value d corresponding to the S/N of the transmission characteristic dependent on an optical system and an optical disc.

Modulating method

A modulating method and apparatus and a demodulating method and apparatus in which a variable length code (d, k;m, n;r) which can provide a greater minimum reversal distance to allow recording of a higher density than ever is provided. According to the modulating method and apparatus, digital data of a basic data length of m bits is modulated into a variable length code (d, k;m, n;r) of a basic code length of n bits, and where the distance between adjacent ones of the digital data is represented by T, the minimum reversal distance of the variable length code is equal to or greater than 2.0 T and the minimum length of a run of a same symbol is equal to or greater than 4. The demodulating apparatus demodulates the digital data back into the variable length code and comprises storage means for storing therein a plurality of tables for converting the digital data into the variable length code, discriminating means for discriminating the binding length of the digital data, and selecting means for selecting one of the tables in accordance with a result of discrimination of the discriminating means.

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Chiba, Japan

Yasuyuki Chaki