Sony Corporation

Sony Cinema Products Corporation

Naoki Inomata

Yujiro Ito

Toshiaki Kojima

Susumu Kurita

Mizuki Kanada

Chiaki Ikeyama

Katsuyuki Kikuchi

Toshiyuki Shirasu

Disclosed herein is a communication apparatus, including: a transmission policy holding section configured to hold transmission policies each corresponding to a conversation; and a transmitted frame control section configured to modify transmitted frames of the conversation in accordance with the corresponding transmission policy held by the transmission policy holding section.

Communication apparatus, communication method, and computer program

A slave device includes: a clock unit that outputs time information; a message receiving unit that receives messages sent from a master device; a message sending unit that sends messages to the master device; a calculation unit that calculates a correction value necessary for correcting the time on the clock unit; and a correction unit that corrects the time on the clock unit based on the correction value calculated by the calculation unit.

Slave device, time synchronization method in slave device, master device, and electronic equipment system

A communication apparatus includes: a higher-layer processing unit that starts up a retransmission process of a corresponding packet in accordance with reception of a Duplicate ACK packet; and a lower-layer processing unit that collects a plurality of the Duplicate ACKs received through a network as one ACK and sends the one ACK to a higher layer.

A slave device includes: a clock unit that is configured by a counter so as to output time information; a clock generation unit that generates clocks for counting up the counter; a message receiving unit that receives messages sent from a master device; a message sending unit that sends messages to the master device; a first calculation unit that calculates a first value necessary for correcting the time on the clock unit; a first correction unit that corrects the time on the clock unit based on the first value calculated by the first calculation unit; a second calculation unit that calculates a second value necessary for correcting a frequency of the clocks generated by the clock generation unit; and a second correction unit that corrects the frequency of the clocks generated by the clock generation unit based on the second value calculated by the second calculation unit.

Disclosed herein is a memory control apparatus including: a plurality of buffers configured to store data; a plurality of input ports configured to input the data to be written into the buffers; a plurality of output ports configured to output the data read from the buffers; a write control circuit configured to write the data inputted via each of the input ports into an unused one of the buffers; and a read control circuit configured to read the data written into the unused buffer, and supply the read data to a particular one of the output ports corresponding to a destination of the data.

Apparatus and method for controlling storage buffers

An autofocus apparatus of an imaging apparatus is one having an estimation-value calculating unit for obtaining a plurality of estimation values by using a plurality of areas and a plurality of filters for extracting a horizontal-direction frequency component in a specific image area of a video signal corresponding to a specific image area and supplied from an imaging apparatus for effectively carrying out an autofocus operation of a television camera, a signal processing unit for calculating a control value used for controlling an image pickup lens drive unit of the imaging apparatus in response to an estimation value calculated by the above estimation-value calculating unit, and an output unit for supplying the above control value to the above image pickup lens drive unit. The autofocus apparatus includes a control program for determining a focus detection direction by decision by majority of a plurality of weighted estimation values obtained by combination of the above plurality of areas and the above plurality of filters.

Focus control method and video camera

Focus control method and video camera apparatus

A playback speed control system for a reproducing apparatus allows a user to manually vary the playback speed of a recording medium. When a user rotates a dial of the reproducing apparatus, a frequency generator generates pulses with a frequency that matches the rotational speed of the dial. A counter counts these generated pulses within a specified time period. In one embodiment, the recording medium speed is kept constant over a particular range of dial rotational speeds, while outside this range, the tape speed varies in accordance with the dial rotational speed. In another embodiment, if the value of the count data exceeds a reference value, then these pulses are averaged, and the averaged result is used to determine the speed of the recording medium. If the count data value is less than the reference value, then this count data is used to determine the speed of the recording medium. In yet another embodiment, the generated pulses are averaged in accordance with one of a plurality of averaging techniques. The particular averaging technique is selected in accordance with a comparison between the count data value and a plurality of reference values. Each consecutive pair of reference values defines a particular range. Each range corresponds to a particular averaging technique, and when a count data value falls within a particular range, then the pulses are averaged in accordance with the averaging technique that corresponds to that particular range.

Playback speed control system for a reproducing apparatus

A data recording apparatus for a motion picture film for digitally recording data concerning an image of the motion picture film. The data recording apparatus includes a plurality of light emission units (LEDs) 4 lighted responsive to the data concerning an image, a light volume detection units 5 for detecting the light emission volume of each of the light emission unit, a reference value outputting unit 6 for outputting a reference output specifying a reference value of the light emission volume of the light emission unit and a control unit 8 for comparing the reference output value of the reference value outputting unit 6 to each detected output value from the light volume detection unit 5 for controlling the light emission of the LEDs 4 so that each detected output value will be equal to the reference output value. With the data recording apparatus for a motion picture film, each light emitting unit operates with the uniform light emission volume during data recording, thus enabling printing fluctuations of the recording pattern of the negative motion picture film for improving the SN ratio at the time of reproducing a positive film obtained from the negative film. Specifically, the negative film can be improved in quality inexpensively during recording of digital audio data on the motion picture film.

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Kanagawa, Japan

Naoki Inomata