Matsushita Electric Industrial Co., Ltd.

Takaharu Hosoda

Yukio Shimamura

Katsuji Uro

Masaji Ueno

Tetsuya Kaneshiro

Shigeatsu Asari

When converting a predetermined time code into another time code in a different format while increasing or decreasing a count value for one second corresponding to the format of the time code thus converted, first of all, a time codewhich has not been converted is read in a frame pulsecorresponding to a time codeobtained after the conversion so that intermediate data' are generated. Next, an overlapping count value generated in the intermediate data&#x2032; is corrected to add a continuity, thereby generating the time codeafter the conversion.

Time code calculating method and time code calculating apparatus

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

A transportation management system comprises a management terminal device provided in a transportation medium and a management body device for remotely managing the transportation state of a transportation object. The management terminal device comprises a position detecting device, a get-on/off detecting device and a transportation information transmitter, which respectively, detects the current position of the transportation medium, detects the delivery-in/out of the transportation object to/from the transportation medium, and transmits transportation information to the management body device. The management body device comprises a transportation information receiver, a distance storage, a collator and a deciding device, which respectively, receives transportation information transmitted from the management terminal device, stores the transportation distance information of the transportation object, collates the transportation information with the transportation distance information, and decides the transportation state of the transportation object based on the collation result.

Transportation management system

A time code arithmetic apparatus having a very simple configuration is disclosed, in which the mode of two time codes is not required to be the drop mode, and the arithmetic operation of the time code flexibly meeting the requirement of all television transmission systems can be performed. Two time codes input through selector circuits A and B are added/subtracted in arithmetic means as a time code of non-drop mode simply based on the add/subtract information and the result of the arithmetic operation Oab is output. For the arithmetic result Oab and the pre-calculation time code, the total number of frames skipped (dropped) during the time lapse frame by frame from 00:00:00.00 o'clock is calculated, and in the case where the total numbers of two types of drop frames are not equal to each other, the arithmetic result Oab and the difference Nb between the two types of drop frames are returned to the selector circuits A and B, and the arithmetic operation is performed again in the arithmetic device.

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Osaka, Japan

Takaharu Hosoda