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1. 发明专利

JPS60144856A DATA READING SYSTEM 失效
公开(公告)号：JPS60144856A
公开(公告)日：1985-07-31
申请号：JP146184
申请日：1984-01-09
申请人： FUJITSU LTD
发明人： OOUCHI NOBUAKI , AZUMA HIROKI
IPC分类号： G06F3/16 , G06F12/00 , G06F12/02 , G06F13/16 , G06F13/18
摘要： PURPOSE:To read out the sound data turned into an analog form at the head of the data even in case the read-out requests are given simultaneously from plural channels, by providing an address generating counter for each channel. CONSTITUTION:Channels 1 and 2 deliver the read-out requests. Then a terminal 10-2 of the channel 2 is set at level ''1'' while the channel 1 is reading out the sound data. Then a clock is supplied to an address generating counter 8-2 from an output Q1 of a shift register 11. The counter 8-2 produces successively addresses while the clocks are supplied from the head address of the sound data stored in a semiconductor memory 1. These addresses are sent to a memory 1 via an address bus 6. The memory 1 delivers the sound data turned into an analog form successively at the head of the data via a D/A7-2. Thus it is possible to read out the sound data at and after its head even in case the read-out requests are delivered from plural channels at a time.

2. 发明专利

JPH0312513B2 失效
公开(公告)号：JPH0312513B2
公开(公告)日：1991-02-20
申请号：JP20305685
申请日：1985-09-13
申请人： FUJITSU LTD
发明人： AZUMA HIROKI , HOSOKAWA TAKAHIRO , HANABATAKE TOSHIO
IPC分类号： G01R31/26 , H04N5/04

3. 发明专利

JPS6361336A DATA ERROR DETECTING SYSTEM 失效
公开(公告)号：JPS6361336A
公开(公告)日：1988-03-17
申请号：JP20505686
申请日：1986-09-02
申请人： FUJITSU LTD
发明人： FUJIOKA YASUSHI , AZUMA HIROKI , MORIYAMA YUTAKA
IPC分类号： G06F11/00
摘要： PURPOSE:To execute the error detection of transferred data without fail by returning received data to a transmitter and comparing them with original data transferred earlier by the transmitter. CONSTITUTION:The data transferred from a data processor 1 at a transmitting side through a unidirectional bus 3 and received by receiving side equipment 2 are returned from the receiving side equipment 2 through a data returning path 4 to the data processor 1 at the transmitting side. By comparing the returned data and the original data earlier transferred with the data processor 1 at the transmitting side, the error of the data transferred to the receiving side equipment 2 is detected.

4. 发明专利

JPS62272632A DIVISION AND TRANSMISSION EQUIPMENT FOR TELEVISION SIGNAL 失效
公开(公告)号：JPS62272632A
公开(公告)日：1987-11-26
申请号：JP11646086
申请日：1986-05-20
申请人： FUJITSU LTD
发明人： HOSOKAWA TAKAHIRO , AZUMA HIROKI
IPC分类号： H04L1/00 , H04L1/22 , H04N19/00
摘要： PURPOSE:To recover a television picture with few deterioration in picture guality, even in case of generating the omission, or the error of a data signal on a transmission line, by evading the use of a division signal having the omission, or the error, and performing the interpolation and the synthesis of adjacent picture elements by the division signal. CONSTITUTION:So that a transmission is performed by dividing a signal in a block unit making the best use of the feature of the television signal, such as a field unit, a line unit, or a picture element unit, etc., at a transmission side, a synchronizing signal extraction circuit 113 is provided. At a reception side, when it is decided that the omission, or the error is generated by an error correction threshold signal, a control signal selection circuit 14 to interpolate the signal by the division signal of an adjacent field, an adjacent line, or an adjacent picture element having the strong approximate correlation characteristics of the signal is provided as a substitute, Also, as for the extraction of a clock from a reception data signal, the use of the division signal decided as the one having the omission, or the error, is evaded, and a reception signal selector 15 to perform the clock extraction from a normal division signal is provided. In such way, it is possible to recover the television picture with few deterioration in the picture element even in case of generating the omission, or the error of the data signal on a part of the transmission line.

5. 发明专利

JPS62295589A TELEVISION SIGNAL DISCRIMINATION SYSTEM 失效
公开(公告)号：JPS62295589A
公开(公告)日：1987-12-22
申请号：JP13819286
申请日：1986-06-16
申请人： FUJITSU LTD
发明人： AZUMA HIROKI
IPC分类号： H04N9/00 , H04N9/64
摘要： PURPOSE:To discriminate whether a signal is a NTSC or PAL system signal automatically by separating a TV signal into horizontal and vertical synchronizing signals HS, YS and using a counter circuit to count the number of horizontal synchronizing signal pulses existing between vertical synchronizing signal pulses. CONSTITUTION:The synchronizing signal separation circuit 11 extracts only the synchronzing signals HS,VS only among the television signal TV. The synchronizing signal is given to a horizontal synchronizing separating circuit 12, a guard pulse generating circuit 13 and a vertical synchronizing separation circuit 16. The horizontal synchronizing signal HS and the vertical synchronizing signal VS are used for a count pulse and a reset signal RESET respectively and they are inputted to a counter 21. The sum of the horizontal synchronizing pulses between the reset signals (vertical synchronizing signals) is always outputted from a latch circuit 23 as the count, e.g., 259.

6. 发明专利

JPS6264173A RESET LEVEL TRANSMISSION SYSTEM 失效
公开(公告)号：JPS6264173A
公开(公告)日：1987-03-23
申请号：JP20305685
申请日：1985-09-13
申请人： FUJITSU LTD
发明人： AZUMA HIROKI , HOSOKAWA TAKAHIRO , HANABATAKE TOSHIO
IPC分类号： G01R31/26 , H04N5/04
摘要： PURPOSE:To reproduce a horizontal synchronizing part without distortion by transmitting the horizontal synchronization level of an original signal from the transmission side and reproducing it on the reception side to reset an encoding processing. CONSTITUTION:On the transmission side, the reset value of a synchronizing signal for an optional period within a synchronization period is extracted, a picture signal is encoded, and both are transmitted. On the reception side, a frame header is detected from a received picture frame by a picture frame header detection circuit 6, and at the same time the reset value is extracted. Thereafter, a decoding circuit 7 inserts the reset value into the encoded picture data during a reset period, and decodes the data. A D/A converter 8 D/A- converts the decoded data and reproduces the picture signal. The reset level of the horizontal synchronizing part of the picture signal thus reproduced is equal to the level of the original signal on the transmission side. Therefore, no distortion occurs during the reset period of the picture signal.

7. 发明专利

JPS6239995A TELEVISION SIGNAL PROCESSOR 失效
公开(公告)号：JPS6239995A
公开(公告)日：1987-02-20
申请号：JP17927385
申请日：1985-08-16
申请人： FUJITSU LTD
发明人： AZUMA HIROKI
IPC分类号： H04N9/465 , H04N9/64
摘要： PURPOSE:To discriminate an NTSC system or a PAL system by providing a synchronous signal separating means for separating a synchronous signal including a horizontal synchronous pulse, a separating means for separating the horizontal synchronous pulse from the separated synchronous signal, and a counting means. CONSTITUTION:A horizontal synchronous pulse separating circuit 3 extracts a pulse train of the same cycle and a horizontal synchronous pulse HP from an inputted synchronous signal and outputs. A pulse detecting circuit 4 extracts a fall pulse which does not coincide with a fall timing of the horizontal synchronous pulse from an output of a fall detecting circuit 2 and outputs a pulse (d). A vertical synchronous signal separating circuit 5 separates a vertical synchronous signal falling only during a period in which a vertical synchronous pulse exists from the synchronous signal. A counter 6 counts the number of pulses in one frame under a control of the vertical synchronous signal. If the input signal is an NTSC signal, an output n1 of the counter 6 is 18 and if the input signal is a PAL signal, the output n1 of the counter 6 is 15.

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