Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Yukio Shimamura

Akiyuki Noda

Takaharu Hosoda

Katsuji Uro

Masaji Ueno

Hiromi Nakase

Shinji Takemoto

Katsuyuki Taguchi

Toru Yamashita

A pickupgenerates a video signal based on an arbitrarily set frame rate. A frame rate converterconverts a frame rate of the video signal output from the pickupinto a predetermined frame rate. Frame rate conversion information output unitsandoutput information on frame rate conversion in a manner corresponding to a video signal after the frame rate conversion.

Image pickup apparatus with frame rate conversion information output

When a time code signal corresponding to an image signal, to which a format conversion changing the number of frames per second is executed, is transmitted, information indicating a frame position where image data is changed through the format conversion in the image signal is attached to the time code signal to be transmitted. Alternatively, information indicating a synchronous state between frame conversion cycles in the format conversion and time code progression is attached to the time code signal. In the foregoing manner, a relationship between the frame position and the time code can be accurately grasped. Further, a secondary conversion (inverse conversion) is accurately executed to the image signal by means of the time code signal.

Video signal format secondary-conversion method, time code signal transmission method, and time code transmitting apparatus

The present invention comprises the step of reading a check-receiving data included in a transmitted time code signal and using the read check-receiving data to generate a transmitting side checking data, and the step of attaching the transmitting side checking data to the transmitted time code signal, as a pre-processing step at the time of transmitting the time code signal. The present invention comprises the step of reading the check-receiving data from the received time code signal and using the read check-receiving data to generate a receiving side checking data, and the step of reading the transmitting side checking data from the received time code signal and comparing the read transmitting side checking data to the receiving side checking data, thereby verifying whether or not an error is generated in the received time code signal. In this way, an error can be detected in the time code signal, as a post-processing step after the time code signal is received.

Time code signal transmitting method and time code signal transmitting apparatus

As a pre-processing step for transmitting a timecode, a checking information is retrieved from a linear time code (LTC). A checking data is created using the retrieved checking information. The checking data is superimposed on a vertical interval time code (VITC). As a post-processing step for transmitting a timecode, meanwhile, collating information corresponding to the checking information is retrieved from the LTC. A collating data is created using the retrieved collating information. Then, the checking data is retrieved from the received VITC. The retrieved checking and collating data are collated to verify, thereby, the presence or absence of errors in the received LTC.

Growing community of inventors

Hirakata, Japan

Yukio Shimamura