Abstract: A signal transmitting device includes: a synchronous-data detecting unit that detects, from parallel data specified by a predetermined format and including video data and audio data, synchronous data for controlling synchronization of the parallel data; an audio extracting unit that stores the audio data in an audio memory; a clock extracting unit that extracts a reference clock from the parallel data; a multiplexing unit that multiplexes the audio data and the synchronous data in a horizontal auxiliary data space of the video data; a control unit that controls, on the basis of the synchronous data and the reference clock, timing of the multiplexing unit for multiplexing the audio data with the video data; and a parallel serial converting unit that converts the video data multiplexed with the audio data by the multiplexing unit into a transmission stream specified by a Level A of a 3G-SDI format.

Abstract: When transmitting an input image signal and an audio signal inputted in synchronization with the input image signal, each frame in the input image signal are divided into first, second, third, and fourth subimages and pixel samples of the subimages are mapped onto image data regions of two-channel HD-SDI signals, respectively, and the audio signal is mapped onto supplementary data regions included in horizontal ancillary data spaces of any of the two-channel HD-SDI signals onto which the subimages are respectively mapped. The pixel samples mapped onto the image data regions of the two-channel HD-SDI signals are multiplexed onto an image data region of a first transfer data stream and the audio signal mapped onto the supplemental data regions included in horizontal ancillary data spaces of any of the two-channel HD-SDI signals is multiplexed onto a horizontal ancillary data space of a second transfer data stream.

Abstract: A data transmitting apparatus and a data receiving apparatus, which multiplexes and transmits HD-SDI signals, and receives the multiplexed and transmitted HD-SDI signals, respectively. The data transmitting apparatus includes a parallel data forming section that forms word string data based on HD-SDI signals having n channels. A data multiplexing section obtains multiplex word string data based on the formed word string data. A multiple channel data forming section forms bit string data of m channels from the multiplex word string data. A data multiplexing and P/S converting section forms bit string data based on the formed bit string data, whereby a bit rate is set to 10 Gb/s or more. An electric photo converting section transmits the formed bit string data.

Abstract: A signal inputting apparatus that receives first and second input image signals transmitted and extracts image data is provided. The apparatus includes a first interface unit and a second interface unit. The first interface unit is configured to receive a first input image signal transmitted, extract data from the first input image signal, and generate a recovered clock from the first input image signal. The second interface unit is configured to receive a second input image signal transmitted in synchronization with the first input image signal and extract data from the transmitted second input image signal based on the recovered clock supplied from the first interface unit.

Abstract: A data processing apparatus for processing a plurality of input signals to increase the number of bits thereof to disperse 0s and 1s therein and then converting the input signals into a serial signal. A signal generating unit generates including signal generating means for generating the serial signal having a second bit rate which is represented by the product of a first bit rate of the input signals, the number of the input signals, and a ratio of a bit length after the number of bits is increased to a bit length before the number of bits is increased.

Abstract: A method of transmitting digital data, with which parallel data, which are constituted with first, second and third data sequences each constituting 12-bit word sequence and multiplexed in parallel with one another to form a digital video signal, are first converted into first and second word sequence data, each of which are constituted with 10-bit words arranged in sequence. Each of the 10-bit words arranged in sequence to form each of the first and second word sequence data does not correspond to a predetermined forbidden code, and consequently, each of the first and second word sequence data do not contain specific 10 bits corresponding to the predetermined forbidden code and therefore can be easily and appropriately reconverted into the original parallel data forming the digital video signal. Then, the first and second word sequence data thus obtained are subjected to P/S conversion to be converted into the first and second serial data, respectively, and the first and second serial data are transmitted.

Abstract: A data transmission method and apparatus is disclosed by which bidirectional transmission of a plurality of optical signals obtained by conversion of a plurality of serial digital data can be achieved efficiently using a single common optical signal transmission cable. A plurality of serial data based on digital video signals from a camera section are converted into a plurality of optical signals using a CWDM technique and then multiplexed into a multiplexed optical signal. The multiplexed optical signal is signaled to a signal transmission cable through a bidirectional WDM coupler disposed at a first end of the optical signal transmission cable so as to be transmitted from the first end to a second end of the optical signal transmission cable.

Abstract: A data time difference absorbing circuit comprises a memory (36) in which first digital data containing first time reference code data are stored and from which the first digital data are read, a memory (37) in which second digital data containing second time reference code data are stored and from which the second digital data are read, a timing data detecting portion (41) for detecting the first time reference code data contained in the first digital data read from the memory (36) and the second time reference code data contained in the second digital data read from the memory (37), a phase difference detecting portion (42) for detecting a phase difference between the first and second time reference code data, and a control signal producing portion (40) operative to control at least one of a timing at which the first digital data are read from the memory (36) and a timing at which the second digital data are read from the memory (37) in response to the phase difference detected by the phase difference detec

Abstract: Disclosed is a signal processor including a serial-to-parallel converter inputting serial digital video signals for n channels and converting the serial digital video signals for respective channels into parallel digital video signals. The signal processor further includes a frame-synchronization scrambler scrambling predetermined bits of the parallel digital video signals and storing the initial values in the auxiliary data section as auxiliary data; and a self-synchronization scrambler scrambling the parallel digital data for respective channels; and a multiplexer multiplexing the parallel digital data for respective channels.

Abstract: Disclosed herein is a data processing apparatus for processing a plurality of input signals to increase the number of bits thereof to disperse 0s and 1s therein and thereafter converting the input signals into a serial signal, including signal generating means for generating the serial signal having a second bit rate which is represented by the product of a first bit rate of the input signals, the number of the input signals, and a ratio of a bit length after the number of bits is increased to a bit length before the number of bits is increased.

Abstract: A method of producing digital data, which comprises the steps of making first arrangements for 12-bit word digital data constituting a digital video signal, which include a frame rate of 24 Hz, 25 Hz, 30 Hz, 50 Hz or 60 Hz, 1125 lines per frame, 1080 active lines per frame, a sampling frequency of 74.25 MHz or 148.5 MHz and 1920 or 1280 active data samples per line, making second arrangements for the 12-bit word digital data, in which 12-bit codes each containing an upper 8-bit portion representing 00h or FFh (h indicates a hexadecimal number) are predetermined to be forbidden code for each active line, and forming the 12-bit word digital data constituting the digital video signal in accordance with the first and second arrangements.

Abstract: The present invention relates to an improved data receiver capable of performing efficient serial transmission of a plurality of channels of HD-SDI signals. The receiver includes a bit/word synchronism setting section for detecting synchronous word data having a particular bit array from the received multiplexed word array data based on a first serial digital video signal constituting bit array data having a bit rate of 10 Gb/s, and setting a shift rate for the multiplexed word array data according to a result of detection of synchronous word data, and obtains a plurality of channels of second serial digital video signals constituting bit array data each having a bit rate as defined in the standard based on the multiplexed word array transmitted therefrom.

Abstract: This invention relates to a data transmitting apparatus and a data receiving apparatus, which multiplexes and transmits HD-SDI signals, and which receives the multiplexed and transmitted HD-SDI signals. The data transmitting apparatus is characterized by being equipped with a parallel data forming section which forms word string data De based on HD-SDI signals DHS of n channels, a data multiplexing section which obtains multiplex word string data Dm based on De, a multiple channel data forming section which forms bit string data DSX of m channels from Dm, a data multiplexing and P/S converting section which forms bit string data DTG based on DSX and in which a bit rate is set to 10 Gb/s or more, and an electric photo converting section which sends away DTG.

Abstract: A method of transmitting digital data, with which parallel data, which are constituted with first, second and third data sequences each constituting 12-bit word sequence and multiplexed in parallel with one another to form a digital video signal, are first converted into first and second word sequence data, each of which are constituted with 10-bit words arranged in sequence. Each of the 10-bit words arranged in sequence to form each of the first and second word sequence data does not correspond to a predetermined forbidden code, and consequently, each of the first and second word sequence data do not contain specific 10 bits corresponding to the predetermined forbidden code and therefore can be easily and appropriately reconverted into the original parallel data forming the digital video signal. Then, the first and second word sequence data thus obtained are subjected to P/S conversion to be converted into the first and second serial data, respectively, and the first and second serial data are transmitted.

Abstract: A data transmission method and apparatus is disclosed by which bidirectional transmission of a plurality of optical signals obtained by conversion of a plurality of serial digital data can be achieved efficiently using a single common optical signal transmission cable. A plurality of serial data based on digital video signals from a camera section are converted into a plurality of optical signals using a CWDM technique and then multiplexed into a multiplexed optical signal. The multiplexed optical signal is signaled to a signal transmission cable through a bidirectional WDM coupler disposed at a first end of the optical signal transmission cable so as to be transmitted from the first end to a second end of the optical signal transmission cable.

Abstract: A method of producing digital data, which comprises the steps of making first arrangements for 12-bit word digital data constituting a digital video signal, which include a frame rate of 24 Hz, 25 Hz, 30 Hz, 50 Hz or 60 Hz, 1125 lines per frame, 1080 active lines per frame, a sampling frequency of 74.25 MHz or 148.5 MHz and 1920 or 1280 active data samples per line, making second arrangements for the 12-bit word digital data, in which 12-bit codes each containing an upper 8-bit portion representing 00h or FFh (h indicates a hexadecimal number) are predetermined to be forbidden code for each active line, and forming the 12-bit word digital data constituting the digital video signal in accordance with the first and second arrangements.

Abstract: A data time difference absorbing circuit comprises a memory (36) in which first digital data containing first time reference code data are stored and from which the first digital data are read, a memory (37) in which second digital data containing second time reference code data are stored and from which the second digital data are read, a timing data detecting portion (41) for detecting the first time reference code data contained in the first digital data read from the memory (36) and the second time reference code data contained in the second digital data read from the memory (37), a phase difference detecting portion (42) for detecting a phase difference between the first and second time reference code data, and a control signal producing portion (40) operative to control at least one of a timing at which the first digital data are read from the memory (36) and a timing at which the second digital data are read from the memory (37) in response to the phase difference detected by the phase difference detec

Abstract: A method of transmitting digital data, which comprises the steps of obtaining first and second 8-bit word sequence data respectively based on luminance signal information data and chrominance signal information data which constitute a digital video signal, causing each of the first and second 8-bit word sequence data to be subjected to 8 bits to 10 bits conversion to produce first and second 10-bit word sequence data, obtaining third and fourth 8-bit word sequence data based on the first and second 10-bit word sequence data, respectively, inserting an additional word data group including 8-bit word synchronous data allotted a predetermined specific code into each of the third and fourth 8-bit word sequence data at predetermined word intervals to produce first and second composite 8-bit word sequence data, converting the first and second composite 8-bit word sequence data into first and second serial data, respectively, and transmitting the first and second serial data through first and second transmission lin

Abstract: In transmitting ten-bit word string data including synchronous word data converted, at a transmitting side, from eight-bit word string data, representing signal information data synchronization required for reproducing the signal information is reliably established at a receiving side. An additional word data group containing eight-bit synchronous word data is inserted between words of the eight-bit word string data. Then, 8B-10B conversion is performed on the eight-bit word string data, thereby obtaining ten-bit word string data. In this case, the additional word data group is selected so that a running disparity of the ten-bit synchronous word data contained in the additional word data group of the composite ten-bit synchronous word data is consistently positive or negative.

Abstract: In the case of transmitting upon converting the 8-bit word string data showing signal information to the 10-bit word string data consisting of word synchronous data, 8-bit word string data showing signal information is obtained and after inserting 2 each of the 8-bit word synchronous data and the 8-bit auxiliary word data to be converted to the 10-bit neutral word data, 8 to 10 bits conversion is conducted to the 10-bit word string data and transmitted; when converting the 8-bit word synchronous data to 10-bit word synchronous data, if the immediately preceding word data is the data having plus running disparity, it is converted to 10-bit word synchronous data having minus running disparity, and if the immediately preceding word data is the data having minus running disparity, it is converted to the 10-bit word synchronous data having plus running disparity. Thereby, in the case of reproducing the signal information at the receiving end, the necessary signal synchronization can be certainly obtained.