Ricoh Company, Ltd.

Hitachi-Kokusai Electric Inc.

Takashi Kajiyama

Kenji Shiraishi

Junichi Shinohara

Kohichi Sugiura

Takehiko Kobayashi

Hiroyuki Akutagawa

In a transmitter, communication is efficiently performed by a DSTBC scheme. In a transmitter which transmits a signal using the DSTBC scheme, the content of a transmission process is set so that a state where a symbol is not present is realized at the origin of signal arrangement in a DSTBC encoder. As an example, the setting is performed so that an input to the DSTBC encoder is calculated using a predetermined operation in which a state where a symbol is not present is realized at the origin of signal arrangement in the DSTBC encoder. As another example, the setting is performed so that initial values in which a state where a symbol is not present is realized at the origin of signal arrangement in the DSTBC encoder are used in differential encoding of the DSTBC encoder.

Transmitter

An imaging device to which a portable storage medium is attachable, includes: a portable storage medium attachment section which attaches the portable storage medium; an inside storage medium which links image data imaged to information of imaging date and time and stores the data; and a transfer control section which controls a transfer of the image data from the inside storage medium to the portable storage medium, the portable storage medium having a data area which stores the image data transferred and a system area which stores management data generated corresponding to the image data stored in the data area, the transfer control section setting time stamp information of the management data generated in the portable storage medium corresponding to the image data transferred from the inside storage medium to the portable storage medium as the information of imaging date and time linked to the image data transferred.

Imaging device and control method of imaging device

An AF controlling unit () starts an outside light AF operation controlled by an outside AF unit () by a half-pressing of a shutter release button (), and a change over between the outside AF operation and a CCDAF operation controlled by a CCDAF unit () is controlled corresponding to an elapsed time t (timer) from a starting of the operation of the outside light AF operation and a pressing condition (a detection of the half-pressing by a half-pressed detecting unit (), the detection of a full-pressing by a full-pressed detecting unit () or a press-in releasing) of a shutter release button () after the starting of the outside light AF operation controlled by the outside AF unit () by the half-pressing of the shutter release button ().

Imaging apparatus including an auto focusing function

Imaging apparatus

A photographing apparatus is provided that comprises a photographing lens capable of moving a focal plane of a subject image, a CCD for receiving the subject image and outputting a signal into which the subject image is photo-electrically transferred, as image output, a motor section for driving the photographing lens, and a CPU for controlling an operation of the motor section. This CPU divides a range for enabling driving of the photographing lensinto a minimum number of or more sections which are capable of being interpolated, drives the photographing lens to each divided section in sequence, figures out a focus signal based on a photographing signal obtained from the photographing device at the each driving position, and performs interpolation processing of an evaluation value obtained from the focus signal. Further, by the interpolation processing, the CPU derives a focus position of the photographing lens which position causes the focal plane to coincide with the photographing plane. In addition, the CPU drivingly controls the motor section to drive the photographing lens to the derived focus position. The photographing apparatus with this configuration ensures interpolation accuracy, thus offering an excellent balance of focus-position accuracy in an entire driving range of the photographing lens and time needed for obtaining the focus position.

Growing community of inventors

Tokyo, Japan

Takashi Kajiyama