Data registering equipment for a camera

#1. Field of the Invention

#The present invention relates to a data recording equipment particularly recording photographic for as well as other data such as the date, place and object on a film.

#2. Description of the Prior Art

#FIG. 1 shows the circuit diagram of the data registering equipment for a camera, as an embodiment of the present invention.

#FIG. 2 shows the circuit diagram of the data input part in FIG. 1.

#FIG. 3 shows the timing chart of the signals applied to the input part in FIG. 2.

#Below the present invention will be explained in accordance with the drawings of an embodiment of the present invention.

#FIG. 1 shows the circuit diagram of the data registering equipment for a camera 2. Here a key board 1 receives various data from without the camera 2 from the processing device in which camera various kinds of the photographing informations are taken out as digital informations. A binary coding circuit 3 containing a chattering ellimination circuit, produces codes processed with weights W.sub.1 - W.sub.8 as well as a logical code FU and a signal of LSFW. Signals of W.sub.1 - W.sub.8 and FU are transformed into time series signals by means of a time sharing processing or multiplexing circuit 4 whose output DAEN is applied to a register input gate circuit 5 of a storing circuit. The latter receives the output of a gate receiving the logical input DAEN, the left shift LSFW, FU, the right shift RSFW, Q.sub.n-1, Q.sub.n and Q.sub.n+1. The resulting output is applied to a dynamic register 6. The register 6 forms an output Q.sub.n-1 which is applied the right shift gate circuit 7 and an output Q.sub.n which is applied to the left shift control and decoding latch circuit 8. Further the output Q.sub.n of the register 6 is applied the indication device consisting of the display latch 9, the decoder driver 10 and display 11 in such a manner that for example, letters or figures are indicated in seven segments of four figures. The signals WL.sub.1 - WL.sub.8 from the registers 6 and 8 are applied to the decoding circuit 12 consisting of a binary-decimal decoder and a decimal dot decoder so as to be decoded into dot pattern signals C.sub.1 - C.sub.7 by means of the timing pulse R.sub.1 - R.sub.5 from the clock counter 17 and amplified by the driver 13 into the signals L.sub.1 - L.sub.7 by means of which signal the dot pattern registering head consisting of LED 14 of a plural number of matrices in such a manner that letters or figures illuminate. By means of this LED, the data to be registered is exposed to the registering body 15, for example, the film in the camera. In accordance with the movement of the registering body 15, the positioning pulses PP are produced being synchronized with the clock pulses, taken out by means of the wave form reforming and synchronizing circuit 16 and counted by means of the counter 17 so as to be converted into the timing pulses R.sub.1 - R.sub.8 in such a manner that various circuits are controlled in a time series way. A brightness or time control circuit 18, in accordance with the input of the sensitivity information of the film, produces WRE so as to control the brightness or the time of the registering LED in accordance with the ASA sensitivity of the film to obtain a certain determined exposure. Further by means of the timing pulses R.sub.8 coming from the counter 17 the positioning signal PPD is converted into a digital signal, producing RSFW and LATCH so as to control the right shift circuit 7 and the left shift circuit 8 in the storing part.

#In the above circuit, the digital information coming from the processing device of the camera 2 or the key board 1 is converted into the time sharing signal and stored in the dynamic register 6, when the left shift is carried out. This stored content is shifted to the right by the instruction for reading so as to be read out, converted into the dot pattern signal by the decoder 12 and then illuminate in pattern of letters and figures through the illumination member LED 14, so as to be registered on the film 15. Thus the stored data are decoded by the indication device so as to be indicated visually in letters or figures at a predetermined place on the camera.